diff options
Diffstat (limited to 'app/nginx/src/http/modules/ngx_http_mp4_module.c')
| -rw-r--r-- | app/nginx/src/http/modules/ngx_http_mp4_module.c | 3548 |
1 files changed, 0 insertions, 3548 deletions
diff --git a/app/nginx/src/http/modules/ngx_http_mp4_module.c b/app/nginx/src/http/modules/ngx_http_mp4_module.c deleted file mode 100644 index f3c0fdd..0000000 --- a/app/nginx/src/http/modules/ngx_http_mp4_module.c +++ /dev/null @@ -1,3548 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_http.h> - - -#define NGX_HTTP_MP4_TRAK_ATOM 0 -#define NGX_HTTP_MP4_TKHD_ATOM 1 -#define NGX_HTTP_MP4_MDIA_ATOM 2 -#define NGX_HTTP_MP4_MDHD_ATOM 3 -#define NGX_HTTP_MP4_HDLR_ATOM 4 -#define NGX_HTTP_MP4_MINF_ATOM 5 -#define NGX_HTTP_MP4_VMHD_ATOM 6 -#define NGX_HTTP_MP4_SMHD_ATOM 7 -#define NGX_HTTP_MP4_DINF_ATOM 8 -#define NGX_HTTP_MP4_STBL_ATOM 9 -#define NGX_HTTP_MP4_STSD_ATOM 10 -#define NGX_HTTP_MP4_STTS_ATOM 11 -#define NGX_HTTP_MP4_STTS_DATA 12 -#define NGX_HTTP_MP4_STSS_ATOM 13 -#define NGX_HTTP_MP4_STSS_DATA 14 -#define NGX_HTTP_MP4_CTTS_ATOM 15 -#define NGX_HTTP_MP4_CTTS_DATA 16 -#define NGX_HTTP_MP4_STSC_ATOM 17 -#define NGX_HTTP_MP4_STSC_START 18 -#define NGX_HTTP_MP4_STSC_DATA 19 -#define NGX_HTTP_MP4_STSC_END 20 -#define NGX_HTTP_MP4_STSZ_ATOM 21 -#define NGX_HTTP_MP4_STSZ_DATA 22 -#define NGX_HTTP_MP4_STCO_ATOM 23 -#define NGX_HTTP_MP4_STCO_DATA 24 -#define NGX_HTTP_MP4_CO64_ATOM 25 -#define NGX_HTTP_MP4_CO64_DATA 26 - -#define NGX_HTTP_MP4_LAST_ATOM NGX_HTTP_MP4_CO64_DATA - - -typedef struct { - size_t buffer_size; - size_t max_buffer_size; -} ngx_http_mp4_conf_t; - - -typedef struct { - u_char chunk[4]; - u_char samples[4]; - u_char id[4]; -} ngx_mp4_stsc_entry_t; - - -typedef struct { - uint32_t timescale; - uint32_t time_to_sample_entries; - uint32_t sample_to_chunk_entries; - uint32_t sync_samples_entries; - uint32_t composition_offset_entries; - uint32_t sample_sizes_entries; - uint32_t chunks; - - ngx_uint_t start_sample; - ngx_uint_t end_sample; - ngx_uint_t start_chunk; - ngx_uint_t end_chunk; - ngx_uint_t start_chunk_samples; - ngx_uint_t end_chunk_samples; - uint64_t start_chunk_samples_size; - uint64_t end_chunk_samples_size; - off_t start_offset; - off_t end_offset; - - size_t tkhd_size; - size_t mdhd_size; - size_t hdlr_size; - size_t vmhd_size; - size_t smhd_size; - size_t dinf_size; - size_t size; - - ngx_chain_t out[NGX_HTTP_MP4_LAST_ATOM + 1]; - - ngx_buf_t trak_atom_buf; - ngx_buf_t tkhd_atom_buf; - ngx_buf_t mdia_atom_buf; - ngx_buf_t mdhd_atom_buf; - ngx_buf_t hdlr_atom_buf; - ngx_buf_t minf_atom_buf; - ngx_buf_t vmhd_atom_buf; - ngx_buf_t smhd_atom_buf; - ngx_buf_t dinf_atom_buf; - ngx_buf_t stbl_atom_buf; - ngx_buf_t stsd_atom_buf; - ngx_buf_t stts_atom_buf; - ngx_buf_t stts_data_buf; - ngx_buf_t stss_atom_buf; - ngx_buf_t stss_data_buf; - ngx_buf_t ctts_atom_buf; - ngx_buf_t ctts_data_buf; - ngx_buf_t stsc_atom_buf; - ngx_buf_t stsc_start_chunk_buf; - ngx_buf_t stsc_end_chunk_buf; - ngx_buf_t stsc_data_buf; - ngx_buf_t stsz_atom_buf; - ngx_buf_t stsz_data_buf; - ngx_buf_t stco_atom_buf; - ngx_buf_t stco_data_buf; - ngx_buf_t co64_atom_buf; - ngx_buf_t co64_data_buf; - - ngx_mp4_stsc_entry_t stsc_start_chunk_entry; - ngx_mp4_stsc_entry_t stsc_end_chunk_entry; -} ngx_http_mp4_trak_t; - - -typedef struct { - ngx_file_t file; - - u_char *buffer; - u_char *buffer_start; - u_char *buffer_pos; - u_char *buffer_end; - size_t buffer_size; - - off_t offset; - off_t end; - off_t content_length; - ngx_uint_t start; - ngx_uint_t length; - uint32_t timescale; - ngx_http_request_t *request; - ngx_array_t trak; - ngx_http_mp4_trak_t traks[2]; - - size_t ftyp_size; - size_t moov_size; - - ngx_chain_t *out; - ngx_chain_t ftyp_atom; - ngx_chain_t moov_atom; - ngx_chain_t mvhd_atom; - ngx_chain_t mdat_atom; - ngx_chain_t mdat_data; - - ngx_buf_t ftyp_atom_buf; - ngx_buf_t moov_atom_buf; - ngx_buf_t mvhd_atom_buf; - ngx_buf_t mdat_atom_buf; - ngx_buf_t mdat_data_buf; - - u_char moov_atom_header[8]; - u_char mdat_atom_header[16]; -} ngx_http_mp4_file_t; - - -typedef struct { - char *name; - ngx_int_t (*handler)(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -} ngx_http_mp4_atom_handler_t; - - -#define ngx_mp4_atom_header(mp4) (mp4->buffer_pos - 8) -#define ngx_mp4_atom_data(mp4) mp4->buffer_pos -#define ngx_mp4_atom_data_size(t) (uint64_t) (sizeof(t) - 8) - - -#define ngx_mp4_atom_next(mp4, n) \ - mp4->buffer_pos += (size_t) n; \ - mp4->offset += n - - -#define ngx_mp4_set_atom_name(p, n1, n2, n3, n4) \ - ((u_char *) (p))[4] = n1; \ - ((u_char *) (p))[5] = n2; \ - ((u_char *) (p))[6] = n3; \ - ((u_char *) (p))[7] = n4 - -#define ngx_mp4_get_32value(p) \ - ( ((uint32_t) ((u_char *) (p))[0] << 24) \ - + ( ((u_char *) (p))[1] << 16) \ - + ( ((u_char *) (p))[2] << 8) \ - + ( ((u_char *) (p))[3]) ) - -#define ngx_mp4_set_32value(p, n) \ - ((u_char *) (p))[0] = (u_char) ((n) >> 24); \ - ((u_char *) (p))[1] = (u_char) ((n) >> 16); \ - ((u_char *) (p))[2] = (u_char) ((n) >> 8); \ - ((u_char *) (p))[3] = (u_char) (n) - -#define ngx_mp4_get_64value(p) \ - ( ((uint64_t) ((u_char *) (p))[0] << 56) \ - + ((uint64_t) ((u_char *) (p))[1] << 48) \ - + ((uint64_t) ((u_char *) (p))[2] << 40) \ - + ((uint64_t) ((u_char *) (p))[3] << 32) \ - + ((uint64_t) ((u_char *) (p))[4] << 24) \ - + ( ((u_char *) (p))[5] << 16) \ - + ( ((u_char *) (p))[6] << 8) \ - + ( ((u_char *) (p))[7]) ) - -#define ngx_mp4_set_64value(p, n) \ - ((u_char *) (p))[0] = (u_char) ((uint64_t) (n) >> 56); \ - ((u_char *) (p))[1] = (u_char) ((uint64_t) (n) >> 48); \ - ((u_char *) (p))[2] = (u_char) ((uint64_t) (n) >> 40); \ - ((u_char *) (p))[3] = (u_char) ((uint64_t) (n) >> 32); \ - ((u_char *) (p))[4] = (u_char) ( (n) >> 24); \ - ((u_char *) (p))[5] = (u_char) ( (n) >> 16); \ - ((u_char *) (p))[6] = (u_char) ( (n) >> 8); \ - ((u_char *) (p))[7] = (u_char) (n) - -#define ngx_mp4_last_trak(mp4) \ - &((ngx_http_mp4_trak_t *) mp4->trak.elts)[mp4->trak.nelts - 1] - - -static ngx_int_t ngx_http_mp4_handler(ngx_http_request_t *r); -static ngx_int_t ngx_http_mp4_atofp(u_char *line, size_t n, size_t point); - -static ngx_int_t ngx_http_mp4_process(ngx_http_mp4_file_t *mp4); -static ngx_int_t ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size); -static ngx_int_t ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static size_t ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, - off_t start_offset, off_t end_offset); -static ngx_int_t ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static void ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static ngx_int_t ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static void ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static ngx_int_t ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static void ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static ngx_int_t ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static void ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static ngx_int_t ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static ngx_int_t ngx_http_mp4_crop_stts_data(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, ngx_uint_t start); -static ngx_int_t ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static void ngx_http_mp4_crop_stss_data(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, ngx_uint_t start); -static ngx_int_t ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static void ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static void ngx_http_mp4_crop_ctts_data(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, ngx_uint_t start); -static ngx_int_t ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static ngx_int_t ngx_http_mp4_crop_stsc_data(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, ngx_uint_t start); -static ngx_int_t ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static ngx_int_t ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static void ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, int32_t adjustment); -static ngx_int_t ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, - uint64_t atom_data_size); -static ngx_int_t ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak); -static void ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, off_t adjustment); - -static char *ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); -static void *ngx_http_mp4_create_conf(ngx_conf_t *cf); -static char *ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child); - - -static ngx_command_t ngx_http_mp4_commands[] = { - - { ngx_string("mp4"), - NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS, - ngx_http_mp4, - 0, - 0, - NULL }, - - { ngx_string("mp4_buffer_size"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, - ngx_conf_set_size_slot, - NGX_HTTP_LOC_CONF_OFFSET, - offsetof(ngx_http_mp4_conf_t, buffer_size), - NULL }, - - { ngx_string("mp4_max_buffer_size"), - NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, - ngx_conf_set_size_slot, - NGX_HTTP_LOC_CONF_OFFSET, - offsetof(ngx_http_mp4_conf_t, max_buffer_size), - NULL }, - - ngx_null_command -}; - - -static ngx_http_module_t ngx_http_mp4_module_ctx = { - NULL, /* preconfiguration */ - NULL, /* postconfiguration */ - - NULL, /* create main configuration */ - NULL, /* init main configuration */ - - NULL, /* create server configuration */ - NULL, /* merge server configuration */ - - ngx_http_mp4_create_conf, /* create location configuration */ - ngx_http_mp4_merge_conf /* merge location configuration */ -}; - - -ngx_module_t ngx_http_mp4_module = { - NGX_MODULE_V1, - &ngx_http_mp4_module_ctx, /* module context */ - ngx_http_mp4_commands, /* module directives */ - NGX_HTTP_MODULE, /* module type */ - NULL, /* init master */ - NULL, /* init module */ - NULL, /* init process */ - NULL, /* init thread */ - NULL, /* exit thread */ - NULL, /* exit process */ - NULL, /* exit master */ - NGX_MODULE_V1_PADDING -}; - - -static ngx_http_mp4_atom_handler_t ngx_http_mp4_atoms[] = { - { "ftyp", ngx_http_mp4_read_ftyp_atom }, - { "moov", ngx_http_mp4_read_moov_atom }, - { "mdat", ngx_http_mp4_read_mdat_atom }, - { NULL, NULL } -}; - -static ngx_http_mp4_atom_handler_t ngx_http_mp4_moov_atoms[] = { - { "mvhd", ngx_http_mp4_read_mvhd_atom }, - { "trak", ngx_http_mp4_read_trak_atom }, - { "cmov", ngx_http_mp4_read_cmov_atom }, - { NULL, NULL } -}; - -static ngx_http_mp4_atom_handler_t ngx_http_mp4_trak_atoms[] = { - { "tkhd", ngx_http_mp4_read_tkhd_atom }, - { "mdia", ngx_http_mp4_read_mdia_atom }, - { NULL, NULL } -}; - -static ngx_http_mp4_atom_handler_t ngx_http_mp4_mdia_atoms[] = { - { "mdhd", ngx_http_mp4_read_mdhd_atom }, - { "hdlr", ngx_http_mp4_read_hdlr_atom }, - { "minf", ngx_http_mp4_read_minf_atom }, - { NULL, NULL } -}; - -static ngx_http_mp4_atom_handler_t ngx_http_mp4_minf_atoms[] = { - { "vmhd", ngx_http_mp4_read_vmhd_atom }, - { "smhd", ngx_http_mp4_read_smhd_atom }, - { "dinf", ngx_http_mp4_read_dinf_atom }, - { "stbl", ngx_http_mp4_read_stbl_atom }, - { NULL, NULL } -}; - -static ngx_http_mp4_atom_handler_t ngx_http_mp4_stbl_atoms[] = { - { "stsd", ngx_http_mp4_read_stsd_atom }, - { "stts", ngx_http_mp4_read_stts_atom }, - { "stss", ngx_http_mp4_read_stss_atom }, - { "ctts", ngx_http_mp4_read_ctts_atom }, - { "stsc", ngx_http_mp4_read_stsc_atom }, - { "stsz", ngx_http_mp4_read_stsz_atom }, - { "stco", ngx_http_mp4_read_stco_atom }, - { "co64", ngx_http_mp4_read_co64_atom }, - { NULL, NULL } -}; - - -static ngx_int_t -ngx_http_mp4_handler(ngx_http_request_t *r) -{ - u_char *last; - size_t root; - ngx_int_t rc, start, end; - ngx_uint_t level, length; - ngx_str_t path, value; - ngx_log_t *log; - ngx_buf_t *b; - ngx_chain_t out; - ngx_http_mp4_file_t *mp4; - ngx_open_file_info_t of; - ngx_http_core_loc_conf_t *clcf; - - if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { - return NGX_HTTP_NOT_ALLOWED; - } - - if (r->uri.data[r->uri.len - 1] == '/') { - return NGX_DECLINED; - } - - rc = ngx_http_discard_request_body(r); - - if (rc != NGX_OK) { - return rc; - } - - last = ngx_http_map_uri_to_path(r, &path, &root, 0); - if (last == NULL) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - log = r->connection->log; - - path.len = last - path.data; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, - "http mp4 filename: \"%V\"", &path); - - clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); - - ngx_memzero(&of, sizeof(ngx_open_file_info_t)); - - of.read_ahead = clcf->read_ahead; - of.directio = NGX_MAX_OFF_T_VALUE; - of.valid = clcf->open_file_cache_valid; - of.min_uses = clcf->open_file_cache_min_uses; - of.errors = clcf->open_file_cache_errors; - of.events = clcf->open_file_cache_events; - - if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) - != NGX_OK) - { - switch (of.err) { - - case 0: - return NGX_HTTP_INTERNAL_SERVER_ERROR; - - case NGX_ENOENT: - case NGX_ENOTDIR: - case NGX_ENAMETOOLONG: - - level = NGX_LOG_ERR; - rc = NGX_HTTP_NOT_FOUND; - break; - - case NGX_EACCES: -#if (NGX_HAVE_OPENAT) - case NGX_EMLINK: - case NGX_ELOOP: -#endif - - level = NGX_LOG_ERR; - rc = NGX_HTTP_FORBIDDEN; - break; - - default: - - level = NGX_LOG_CRIT; - rc = NGX_HTTP_INTERNAL_SERVER_ERROR; - break; - } - - if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) { - ngx_log_error(level, log, of.err, - "%s \"%s\" failed", of.failed, path.data); - } - - return rc; - } - - if (!of.is_file) { - - if (ngx_close_file(of.fd) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, - ngx_close_file_n " \"%s\" failed", path.data); - } - - return NGX_DECLINED; - } - - r->root_tested = !r->error_page; - r->allow_ranges = 1; - - start = -1; - length = 0; - r->headers_out.content_length_n = of.size; - mp4 = NULL; - b = NULL; - - if (r->args.len) { - - if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) { - - /* - * A Flash player may send start value with a lot of digits - * after dot so a custom function is used instead of ngx_atofp(). - */ - - start = ngx_http_mp4_atofp(value.data, value.len, 3); - } - - if (ngx_http_arg(r, (u_char *) "end", 3, &value) == NGX_OK) { - - end = ngx_http_mp4_atofp(value.data, value.len, 3); - - if (end > 0) { - if (start < 0) { - start = 0; - } - - if (end > start) { - length = end - start; - } - } - } - } - - if (start >= 0) { - r->single_range = 1; - - mp4 = ngx_pcalloc(r->pool, sizeof(ngx_http_mp4_file_t)); - if (mp4 == NULL) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - mp4->file.fd = of.fd; - mp4->file.name = path; - mp4->file.log = r->connection->log; - mp4->end = of.size; - mp4->start = (ngx_uint_t) start; - mp4->length = length; - mp4->request = r; - - switch (ngx_http_mp4_process(mp4)) { - - case NGX_DECLINED: - if (mp4->buffer) { - ngx_pfree(r->pool, mp4->buffer); - } - - ngx_pfree(r->pool, mp4); - mp4 = NULL; - - break; - - case NGX_OK: - r->headers_out.content_length_n = mp4->content_length; - break; - - default: /* NGX_ERROR */ - if (mp4->buffer) { - ngx_pfree(r->pool, mp4->buffer); - } - - ngx_pfree(r->pool, mp4); - - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - } - - log->action = "sending mp4 to client"; - - if (clcf->directio <= of.size) { - - /* - * DIRECTIO is set on transfer only - * to allow kernel to cache "moov" atom - */ - - if (ngx_directio_on(of.fd) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, - ngx_directio_on_n " \"%s\" failed", path.data); - } - - of.is_directio = 1; - - if (mp4) { - mp4->file.directio = 1; - } - } - - r->headers_out.status = NGX_HTTP_OK; - r->headers_out.last_modified_time = of.mtime; - - if (ngx_http_set_etag(r) != NGX_OK) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - if (ngx_http_set_content_type(r) != NGX_OK) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - if (mp4 == NULL) { - b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); - if (b == NULL) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - - b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t)); - if (b->file == NULL) { - return NGX_HTTP_INTERNAL_SERVER_ERROR; - } - } - - rc = ngx_http_send_header(r); - - if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { - return rc; - } - - if (mp4) { - return ngx_http_output_filter(r, mp4->out); - } - - b->file_pos = 0; - b->file_last = of.size; - - b->in_file = b->file_last ? 1 : 0; - b->last_buf = (r == r->main) ? 1 : 0; - b->last_in_chain = 1; - - b->file->fd = of.fd; - b->file->name = path; - b->file->log = log; - b->file->directio = of.is_directio; - - out.buf = b; - out.next = NULL; - - return ngx_http_output_filter(r, &out); -} - - -static ngx_int_t -ngx_http_mp4_atofp(u_char *line, size_t n, size_t point) -{ - ngx_int_t value, cutoff, cutlim; - ngx_uint_t dot; - - /* same as ngx_atofp(), but allows additional digits */ - - if (n == 0) { - return NGX_ERROR; - } - - cutoff = NGX_MAX_INT_T_VALUE / 10; - cutlim = NGX_MAX_INT_T_VALUE % 10; - - dot = 0; - - for (value = 0; n--; line++) { - - if (*line == '.') { - if (dot) { - return NGX_ERROR; - } - - dot = 1; - continue; - } - - if (*line < '0' || *line > '9') { - return NGX_ERROR; - } - - if (point == 0) { - continue; - } - - if (value >= cutoff && (value > cutoff || *line - '0' > cutlim)) { - return NGX_ERROR; - } - - value = value * 10 + (*line - '0'); - point -= dot; - } - - while (point--) { - if (value > cutoff) { - return NGX_ERROR; - } - - value = value * 10; - } - - return value; -} - - -static ngx_int_t -ngx_http_mp4_process(ngx_http_mp4_file_t *mp4) -{ - off_t start_offset, end_offset, adjustment; - ngx_int_t rc; - ngx_uint_t i, j; - ngx_chain_t **prev; - ngx_http_mp4_trak_t *trak; - ngx_http_mp4_conf_t *conf; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 start:%ui, length:%ui", mp4->start, mp4->length); - - conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module); - - mp4->buffer_size = conf->buffer_size; - - rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_atoms, mp4->end); - if (rc != NGX_OK) { - return rc; - } - - if (mp4->trak.nelts == 0) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "no mp4 trak atoms were found in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - if (mp4->mdat_atom.buf == NULL) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "no mp4 mdat atom was found in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - prev = &mp4->out; - - if (mp4->ftyp_atom.buf) { - *prev = &mp4->ftyp_atom; - prev = &mp4->ftyp_atom.next; - } - - *prev = &mp4->moov_atom; - prev = &mp4->moov_atom.next; - - if (mp4->mvhd_atom.buf) { - mp4->moov_size += mp4->mvhd_atom_buf.last - mp4->mvhd_atom_buf.pos; - *prev = &mp4->mvhd_atom; - prev = &mp4->mvhd_atom.next; - } - - start_offset = mp4->end; - end_offset = 0; - trak = mp4->trak.elts; - - for (i = 0; i < mp4->trak.nelts; i++) { - - if (ngx_http_mp4_update_stts_atom(mp4, &trak[i]) != NGX_OK) { - return NGX_ERROR; - } - - if (ngx_http_mp4_update_stss_atom(mp4, &trak[i]) != NGX_OK) { - return NGX_ERROR; - } - - ngx_http_mp4_update_ctts_atom(mp4, &trak[i]); - - if (ngx_http_mp4_update_stsc_atom(mp4, &trak[i]) != NGX_OK) { - return NGX_ERROR; - } - - if (ngx_http_mp4_update_stsz_atom(mp4, &trak[i]) != NGX_OK) { - return NGX_ERROR; - } - - if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) { - if (ngx_http_mp4_update_co64_atom(mp4, &trak[i]) != NGX_OK) { - return NGX_ERROR; - } - - } else { - if (ngx_http_mp4_update_stco_atom(mp4, &trak[i]) != NGX_OK) { - return NGX_ERROR; - } - } - - ngx_http_mp4_update_stbl_atom(mp4, &trak[i]); - ngx_http_mp4_update_minf_atom(mp4, &trak[i]); - trak[i].size += trak[i].mdhd_size; - trak[i].size += trak[i].hdlr_size; - ngx_http_mp4_update_mdia_atom(mp4, &trak[i]); - trak[i].size += trak[i].tkhd_size; - ngx_http_mp4_update_trak_atom(mp4, &trak[i]); - - mp4->moov_size += trak[i].size; - - if (start_offset > trak[i].start_offset) { - start_offset = trak[i].start_offset; - } - - if (end_offset < trak[i].end_offset) { - end_offset = trak[i].end_offset; - } - - *prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM]; - prev = &trak[i].out[NGX_HTTP_MP4_TRAK_ATOM].next; - - for (j = 0; j < NGX_HTTP_MP4_LAST_ATOM + 1; j++) { - if (trak[i].out[j].buf) { - *prev = &trak[i].out[j]; - prev = &trak[i].out[j].next; - } - } - } - - if (end_offset < start_offset) { - end_offset = start_offset; - } - - mp4->moov_size += 8; - - ngx_mp4_set_32value(mp4->moov_atom_header, mp4->moov_size); - ngx_mp4_set_atom_name(mp4->moov_atom_header, 'm', 'o', 'o', 'v'); - mp4->content_length += mp4->moov_size; - - *prev = &mp4->mdat_atom; - - if (start_offset > mp4->mdat_data.buf->file_last) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "start time is out mp4 mdat atom in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - adjustment = mp4->ftyp_size + mp4->moov_size - + ngx_http_mp4_update_mdat_atom(mp4, start_offset, end_offset) - - start_offset; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 adjustment:%O", adjustment); - - for (i = 0; i < mp4->trak.nelts; i++) { - if (trak[i].out[NGX_HTTP_MP4_CO64_DATA].buf) { - ngx_http_mp4_adjust_co64_atom(mp4, &trak[i], adjustment); - } else { - ngx_http_mp4_adjust_stco_atom(mp4, &trak[i], (int32_t) adjustment); - } - } - - return NGX_OK; -} - - -typedef struct { - u_char size[4]; - u_char name[4]; -} ngx_mp4_atom_header_t; - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char size64[8]; -} ngx_mp4_atom_header64_t; - - -static ngx_int_t -ngx_http_mp4_read_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_atom_handler_t *atom, uint64_t atom_data_size) -{ - off_t end; - size_t atom_header_size; - u_char *atom_header, *atom_name; - uint64_t atom_size; - ngx_int_t rc; - ngx_uint_t n; - - end = mp4->offset + atom_data_size; - - while (mp4->offset < end) { - - if (ngx_http_mp4_read(mp4, sizeof(uint32_t)) != NGX_OK) { - return NGX_ERROR; - } - - atom_header = mp4->buffer_pos; - atom_size = ngx_mp4_get_32value(atom_header); - atom_header_size = sizeof(ngx_mp4_atom_header_t); - - if (atom_size == 0) { - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 atom end"); - return NGX_OK; - } - - if (atom_size < sizeof(ngx_mp4_atom_header_t)) { - - if (atom_size == 1) { - - if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header64_t)) - != NGX_OK) - { - return NGX_ERROR; - } - - /* 64-bit atom size */ - atom_header = mp4->buffer_pos; - atom_size = ngx_mp4_get_64value(atom_header + 8); - atom_header_size = sizeof(ngx_mp4_atom_header64_t); - - } else { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 atom is too small:%uL", - mp4->file.name.data, atom_size); - return NGX_ERROR; - } - } - - if (ngx_http_mp4_read(mp4, sizeof(ngx_mp4_atom_header_t)) != NGX_OK) { - return NGX_ERROR; - } - - atom_header = mp4->buffer_pos; - atom_name = atom_header + sizeof(uint32_t); - - ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 atom: %*s @%O:%uL", - (size_t) 4, atom_name, mp4->offset, atom_size); - - if (atom_size > (uint64_t) (NGX_MAX_OFF_T_VALUE - mp4->offset) - || mp4->offset + (off_t) atom_size > end) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 atom too large:%uL", - mp4->file.name.data, atom_size); - return NGX_ERROR; - } - - for (n = 0; atom[n].name; n++) { - - if (ngx_strncmp(atom_name, atom[n].name, 4) == 0) { - - ngx_mp4_atom_next(mp4, atom_header_size); - - rc = atom[n].handler(mp4, atom_size - atom_header_size); - if (rc != NGX_OK) { - return rc; - } - - goto next; - } - } - - ngx_mp4_atom_next(mp4, atom_size); - - next: - continue; - } - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read(ngx_http_mp4_file_t *mp4, size_t size) -{ - ssize_t n; - - if (mp4->buffer_pos + size <= mp4->buffer_end) { - return NGX_OK; - } - - if (mp4->offset + (off_t) mp4->buffer_size > mp4->end) { - mp4->buffer_size = (size_t) (mp4->end - mp4->offset); - } - - if (mp4->buffer_size < size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 file truncated", mp4->file.name.data); - return NGX_ERROR; - } - - if (mp4->buffer == NULL) { - mp4->buffer = ngx_palloc(mp4->request->pool, mp4->buffer_size); - if (mp4->buffer == NULL) { - return NGX_ERROR; - } - - mp4->buffer_start = mp4->buffer; - } - - n = ngx_read_file(&mp4->file, mp4->buffer_start, mp4->buffer_size, - mp4->offset); - - if (n == NGX_ERROR) { - return NGX_ERROR; - } - - if ((size_t) n != mp4->buffer_size) { - ngx_log_error(NGX_LOG_CRIT, mp4->file.log, 0, - ngx_read_file_n " read only %z of %z from \"%s\"", - n, mp4->buffer_size, mp4->file.name.data); - return NGX_ERROR; - } - - mp4->buffer_pos = mp4->buffer_start; - mp4->buffer_end = mp4->buffer_start + mp4->buffer_size; - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read_ftyp_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *ftyp_atom; - size_t atom_size; - ngx_buf_t *atom; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ftyp atom"); - - if (atom_data_size > 1024 - || ngx_mp4_atom_data(mp4) + (size_t) atom_data_size > mp4->buffer_end) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 ftyp atom is too large:%uL", - mp4->file.name.data, atom_data_size); - return NGX_ERROR; - } - - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - - ftyp_atom = ngx_palloc(mp4->request->pool, atom_size); - if (ftyp_atom == NULL) { - return NGX_ERROR; - } - - ngx_mp4_set_32value(ftyp_atom, atom_size); - ngx_mp4_set_atom_name(ftyp_atom, 'f', 't', 'y', 'p'); - - /* - * only moov atom content is guaranteed to be in mp4->buffer - * during sending response, so ftyp atom content should be copied - */ - ngx_memcpy(ftyp_atom + sizeof(ngx_mp4_atom_header_t), - ngx_mp4_atom_data(mp4), (size_t) atom_data_size); - - atom = &mp4->ftyp_atom_buf; - atom->temporary = 1; - atom->pos = ftyp_atom; - atom->last = ftyp_atom + atom_size; - - mp4->ftyp_atom.buf = atom; - mp4->ftyp_size = atom_size; - mp4->content_length = atom_size; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -/* - * Small excess buffer to process atoms after moov atom, mp4->buffer_start - * will be set to this buffer part after moov atom processing. - */ -#define NGX_HTTP_MP4_MOOV_BUFFER_EXCESS (4 * 1024) - -static ngx_int_t -ngx_http_mp4_read_moov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - ngx_int_t rc; - ngx_uint_t no_mdat; - ngx_buf_t *atom; - ngx_http_mp4_conf_t *conf; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom"); - - no_mdat = (mp4->mdat_atom.buf == NULL); - - if (no_mdat && mp4->start == 0 && mp4->length == 0) { - /* - * send original file if moov atom resides before - * mdat atom and client requests integral file - */ - return NGX_DECLINED; - } - - conf = ngx_http_get_module_loc_conf(mp4->request, ngx_http_mp4_module); - - if (atom_data_size > mp4->buffer_size) { - - if (atom_data_size > conf->max_buffer_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 moov atom is too large:%uL, " - "you may want to increase mp4_max_buffer_size", - mp4->file.name.data, atom_data_size); - return NGX_ERROR; - } - - ngx_pfree(mp4->request->pool, mp4->buffer); - mp4->buffer = NULL; - mp4->buffer_pos = NULL; - mp4->buffer_end = NULL; - - mp4->buffer_size = (size_t) atom_data_size - + NGX_HTTP_MP4_MOOV_BUFFER_EXCESS * no_mdat; - } - - if (ngx_http_mp4_read(mp4, (size_t) atom_data_size) != NGX_OK) { - return NGX_ERROR; - } - - mp4->trak.elts = &mp4->traks; - mp4->trak.size = sizeof(ngx_http_mp4_trak_t); - mp4->trak.nalloc = 2; - mp4->trak.pool = mp4->request->pool; - - atom = &mp4->moov_atom_buf; - atom->temporary = 1; - atom->pos = mp4->moov_atom_header; - atom->last = mp4->moov_atom_header + 8; - - mp4->moov_atom.buf = &mp4->moov_atom_buf; - - rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_moov_atoms, atom_data_size); - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 moov atom done"); - - if (no_mdat) { - mp4->buffer_start = mp4->buffer_pos; - mp4->buffer_size = NGX_HTTP_MP4_MOOV_BUFFER_EXCESS; - - if (mp4->buffer_start + mp4->buffer_size > mp4->buffer_end) { - mp4->buffer = NULL; - mp4->buffer_pos = NULL; - mp4->buffer_end = NULL; - } - - } else { - /* skip atoms after moov atom */ - mp4->offset = mp4->end; - } - - return rc; -} - - -static ngx_int_t -ngx_http_mp4_read_mdat_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - ngx_buf_t *data; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdat atom"); - - data = &mp4->mdat_data_buf; - data->file = &mp4->file; - data->in_file = 1; - data->last_buf = (mp4->request == mp4->request->main) ? 1 : 0; - data->last_in_chain = 1; - data->file_last = mp4->offset + atom_data_size; - - mp4->mdat_atom.buf = &mp4->mdat_atom_buf; - mp4->mdat_atom.next = &mp4->mdat_data; - mp4->mdat_data.buf = data; - - if (mp4->trak.nelts) { - /* skip atoms after mdat atom */ - mp4->offset = mp4->end; - - } else { - ngx_mp4_atom_next(mp4, atom_data_size); - } - - return NGX_OK; -} - - -static size_t -ngx_http_mp4_update_mdat_atom(ngx_http_mp4_file_t *mp4, off_t start_offset, - off_t end_offset) -{ - off_t atom_data_size; - u_char *atom_header; - uint32_t atom_header_size; - uint64_t atom_size; - ngx_buf_t *atom; - - atom_data_size = end_offset - start_offset; - mp4->mdat_data.buf->file_pos = start_offset; - mp4->mdat_data.buf->file_last = end_offset; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mdat new offset @%O:%O", start_offset, atom_data_size); - - atom_header = mp4->mdat_atom_header; - - if ((uint64_t) atom_data_size - > (uint64_t) 0xffffffff - sizeof(ngx_mp4_atom_header_t)) - { - atom_size = 1; - atom_header_size = sizeof(ngx_mp4_atom_header64_t); - ngx_mp4_set_64value(atom_header + sizeof(ngx_mp4_atom_header_t), - sizeof(ngx_mp4_atom_header64_t) + atom_data_size); - } else { - atom_size = sizeof(ngx_mp4_atom_header_t) + atom_data_size; - atom_header_size = sizeof(ngx_mp4_atom_header_t); - } - - mp4->content_length += atom_header_size + atom_data_size; - - ngx_mp4_set_32value(atom_header, atom_size); - ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'a', 't'); - - atom = &mp4->mdat_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + atom_header_size; - - return atom_header_size; -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char creation_time[4]; - u_char modification_time[4]; - u_char timescale[4]; - u_char duration[4]; - u_char rate[4]; - u_char volume[2]; - u_char reserved[10]; - u_char matrix[36]; - u_char preview_time[4]; - u_char preview_duration[4]; - u_char poster_time[4]; - u_char selection_time[4]; - u_char selection_duration[4]; - u_char current_time[4]; - u_char next_track_id[4]; -} ngx_mp4_mvhd_atom_t; - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char creation_time[8]; - u_char modification_time[8]; - u_char timescale[4]; - u_char duration[8]; - u_char rate[4]; - u_char volume[2]; - u_char reserved[10]; - u_char matrix[36]; - u_char preview_time[4]; - u_char preview_duration[4]; - u_char poster_time[4]; - u_char selection_time[4]; - u_char selection_duration[4]; - u_char current_time[4]; - u_char next_track_id[4]; -} ngx_mp4_mvhd64_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_mvhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - size_t atom_size; - uint32_t timescale; - uint64_t duration, start_time, length_time; - ngx_buf_t *atom; - ngx_mp4_mvhd_atom_t *mvhd_atom; - ngx_mp4_mvhd64_atom_t *mvhd64_atom; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mvhd atom"); - - atom_header = ngx_mp4_atom_header(mp4); - mvhd_atom = (ngx_mp4_mvhd_atom_t *) atom_header; - mvhd64_atom = (ngx_mp4_mvhd64_atom_t *) atom_header; - ngx_mp4_set_atom_name(atom_header, 'm', 'v', 'h', 'd'); - - if (ngx_mp4_atom_data_size(ngx_mp4_mvhd_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 mvhd atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - if (mvhd_atom->version[0] == 0) { - /* version 0: 32-bit duration */ - timescale = ngx_mp4_get_32value(mvhd_atom->timescale); - duration = ngx_mp4_get_32value(mvhd_atom->duration); - - } else { - /* version 1: 64-bit duration */ - - if (ngx_mp4_atom_data_size(ngx_mp4_mvhd64_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 mvhd atom too small", - mp4->file.name.data); - return NGX_ERROR; - } - - timescale = ngx_mp4_get_32value(mvhd64_atom->timescale); - duration = ngx_mp4_get_64value(mvhd64_atom->duration); - } - - mp4->timescale = timescale; - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mvhd timescale:%uD, duration:%uL, time:%.3fs", - timescale, duration, (double) duration / timescale); - - start_time = (uint64_t) mp4->start * timescale / 1000; - - if (duration < start_time) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 start time exceeds file duration", - mp4->file.name.data); - return NGX_ERROR; - } - - duration -= start_time; - - if (mp4->length) { - length_time = (uint64_t) mp4->length * timescale / 1000; - - if (duration > length_time) { - duration = length_time; - } - } - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mvhd new duration:%uL, time:%.3fs", - duration, (double) duration / timescale); - - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - ngx_mp4_set_32value(mvhd_atom->size, atom_size); - - if (mvhd_atom->version[0] == 0) { - ngx_mp4_set_32value(mvhd_atom->duration, duration); - - } else { - ngx_mp4_set_64value(mvhd64_atom->duration, duration); - } - - atom = &mp4->mvhd_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + atom_size; - - mp4->mvhd_atom.buf = atom; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read_trak_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_end; - off_t atom_file_end; - ngx_int_t rc; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 trak atom"); - - trak = ngx_array_push(&mp4->trak); - if (trak == NULL) { - return NGX_ERROR; - } - - ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t)); - - atom_header = ngx_mp4_atom_header(mp4); - ngx_mp4_set_atom_name(atom_header, 't', 'r', 'a', 'k'); - - atom = &trak->trak_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + sizeof(ngx_mp4_atom_header_t); - - trak->out[NGX_HTTP_MP4_TRAK_ATOM].buf = atom; - - atom_end = mp4->buffer_pos + (size_t) atom_data_size; - atom_file_end = mp4->offset + atom_data_size; - - rc = ngx_http_mp4_read_atom(mp4, ngx_http_mp4_trak_atoms, atom_data_size); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 trak atom: %i", rc); - - if (rc == NGX_DECLINED) { - /* skip this trak */ - ngx_memzero(trak, sizeof(ngx_http_mp4_trak_t)); - mp4->trak.nelts--; - mp4->buffer_pos = atom_end; - mp4->offset = atom_file_end; - return NGX_OK; - } - - return rc; -} - - -static void -ngx_http_mp4_update_trak_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - ngx_buf_t *atom; - - trak->size += sizeof(ngx_mp4_atom_header_t); - atom = &trak->trak_atom_buf; - ngx_mp4_set_32value(atom->pos, trak->size); -} - - -static ngx_int_t -ngx_http_mp4_read_cmov_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 compressed moov atom (cmov) is not supported", - mp4->file.name.data); - - return NGX_ERROR; -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char creation_time[4]; - u_char modification_time[4]; - u_char track_id[4]; - u_char reserved1[4]; - u_char duration[4]; - u_char reserved2[8]; - u_char layer[2]; - u_char group[2]; - u_char volume[2]; - u_char reserved3[2]; - u_char matrix[36]; - u_char width[4]; - u_char height[4]; -} ngx_mp4_tkhd_atom_t; - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char creation_time[8]; - u_char modification_time[8]; - u_char track_id[4]; - u_char reserved1[4]; - u_char duration[8]; - u_char reserved2[8]; - u_char layer[2]; - u_char group[2]; - u_char volume[2]; - u_char reserved3[2]; - u_char matrix[36]; - u_char width[4]; - u_char height[4]; -} ngx_mp4_tkhd64_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_tkhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - size_t atom_size; - uint64_t duration, start_time, length_time; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - ngx_mp4_tkhd_atom_t *tkhd_atom; - ngx_mp4_tkhd64_atom_t *tkhd64_atom; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 tkhd atom"); - - atom_header = ngx_mp4_atom_header(mp4); - tkhd_atom = (ngx_mp4_tkhd_atom_t *) atom_header; - tkhd64_atom = (ngx_mp4_tkhd64_atom_t *) atom_header; - ngx_mp4_set_atom_name(tkhd_atom, 't', 'k', 'h', 'd'); - - if (ngx_mp4_atom_data_size(ngx_mp4_tkhd_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 tkhd atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - if (tkhd_atom->version[0] == 0) { - /* version 0: 32-bit duration */ - duration = ngx_mp4_get_32value(tkhd_atom->duration); - - } else { - /* version 1: 64-bit duration */ - - if (ngx_mp4_atom_data_size(ngx_mp4_tkhd64_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 tkhd atom too small", - mp4->file.name.data); - return NGX_ERROR; - } - - duration = ngx_mp4_get_64value(tkhd64_atom->duration); - } - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "tkhd duration:%uL, time:%.3fs", - duration, (double) duration / mp4->timescale); - - start_time = (uint64_t) mp4->start * mp4->timescale / 1000; - - if (duration <= start_time) { - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "tkhd duration is less than start time"); - return NGX_DECLINED; - } - - duration -= start_time; - - if (mp4->length) { - length_time = (uint64_t) mp4->length * mp4->timescale / 1000; - - if (duration > length_time) { - duration = length_time; - } - } - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "tkhd new duration:%uL, time:%.3fs", - duration, (double) duration / mp4->timescale); - - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - - trak = ngx_mp4_last_trak(mp4); - trak->tkhd_size = atom_size; - - ngx_mp4_set_32value(tkhd_atom->size, atom_size); - - if (tkhd_atom->version[0] == 0) { - ngx_mp4_set_32value(tkhd_atom->duration, duration); - - } else { - ngx_mp4_set_64value(tkhd64_atom->duration, duration); - } - - atom = &trak->tkhd_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + atom_size; - - trak->out[NGX_HTTP_MP4_TKHD_ATOM].buf = atom; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read_mdia_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process mdia atom"); - - atom_header = ngx_mp4_atom_header(mp4); - ngx_mp4_set_atom_name(atom_header, 'm', 'd', 'i', 'a'); - - trak = ngx_mp4_last_trak(mp4); - - atom = &trak->mdia_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + sizeof(ngx_mp4_atom_header_t); - - trak->out[NGX_HTTP_MP4_MDIA_ATOM].buf = atom; - - return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_mdia_atoms, atom_data_size); -} - - -static void -ngx_http_mp4_update_mdia_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - ngx_buf_t *atom; - - trak->size += sizeof(ngx_mp4_atom_header_t); - atom = &trak->mdia_atom_buf; - ngx_mp4_set_32value(atom->pos, trak->size); -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char creation_time[4]; - u_char modification_time[4]; - u_char timescale[4]; - u_char duration[4]; - u_char language[2]; - u_char quality[2]; -} ngx_mp4_mdhd_atom_t; - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char creation_time[8]; - u_char modification_time[8]; - u_char timescale[4]; - u_char duration[8]; - u_char language[2]; - u_char quality[2]; -} ngx_mp4_mdhd64_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_mdhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - size_t atom_size; - uint32_t timescale; - uint64_t duration, start_time, length_time; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - ngx_mp4_mdhd_atom_t *mdhd_atom; - ngx_mp4_mdhd64_atom_t *mdhd64_atom; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 mdhd atom"); - - atom_header = ngx_mp4_atom_header(mp4); - mdhd_atom = (ngx_mp4_mdhd_atom_t *) atom_header; - mdhd64_atom = (ngx_mp4_mdhd64_atom_t *) atom_header; - ngx_mp4_set_atom_name(mdhd_atom, 'm', 'd', 'h', 'd'); - - if (ngx_mp4_atom_data_size(ngx_mp4_mdhd_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 mdhd atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - if (mdhd_atom->version[0] == 0) { - /* version 0: everything is 32-bit */ - timescale = ngx_mp4_get_32value(mdhd_atom->timescale); - duration = ngx_mp4_get_32value(mdhd_atom->duration); - - } else { - /* version 1: 64-bit duration and 32-bit timescale */ - - if (ngx_mp4_atom_data_size(ngx_mp4_mdhd64_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 mdhd atom too small", - mp4->file.name.data); - return NGX_ERROR; - } - - timescale = ngx_mp4_get_32value(mdhd64_atom->timescale); - duration = ngx_mp4_get_64value(mdhd64_atom->duration); - } - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mdhd timescale:%uD, duration:%uL, time:%.3fs", - timescale, duration, (double) duration / timescale); - - start_time = (uint64_t) mp4->start * timescale / 1000; - - if (duration <= start_time) { - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mdhd duration is less than start time"); - return NGX_DECLINED; - } - - duration -= start_time; - - if (mp4->length) { - length_time = (uint64_t) mp4->length * timescale / 1000; - - if (duration > length_time) { - duration = length_time; - } - } - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mdhd new duration:%uL, time:%.3fs", - duration, (double) duration / timescale); - - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - - trak = ngx_mp4_last_trak(mp4); - trak->mdhd_size = atom_size; - trak->timescale = timescale; - - ngx_mp4_set_32value(mdhd_atom->size, atom_size); - - if (mdhd_atom->version[0] == 0) { - ngx_mp4_set_32value(mdhd_atom->duration, duration); - - } else { - ngx_mp4_set_64value(mdhd64_atom->duration, duration); - } - - atom = &trak->mdhd_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + atom_size; - - trak->out[NGX_HTTP_MP4_MDHD_ATOM].buf = atom; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read_hdlr_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - size_t atom_size; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 hdlr atom"); - - atom_header = ngx_mp4_atom_header(mp4); - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - ngx_mp4_set_32value(atom_header, atom_size); - ngx_mp4_set_atom_name(atom_header, 'h', 'd', 'l', 'r'); - - trak = ngx_mp4_last_trak(mp4); - - atom = &trak->hdlr_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + atom_size; - - trak->hdlr_size = atom_size; - trak->out[NGX_HTTP_MP4_HDLR_ATOM].buf = atom; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read_minf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process minf atom"); - - atom_header = ngx_mp4_atom_header(mp4); - ngx_mp4_set_atom_name(atom_header, 'm', 'i', 'n', 'f'); - - trak = ngx_mp4_last_trak(mp4); - - atom = &trak->minf_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + sizeof(ngx_mp4_atom_header_t); - - trak->out[NGX_HTTP_MP4_MINF_ATOM].buf = atom; - - return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_minf_atoms, atom_data_size); -} - - -static void -ngx_http_mp4_update_minf_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - ngx_buf_t *atom; - - trak->size += sizeof(ngx_mp4_atom_header_t) - + trak->vmhd_size - + trak->smhd_size - + trak->dinf_size; - atom = &trak->minf_atom_buf; - ngx_mp4_set_32value(atom->pos, trak->size); -} - - -static ngx_int_t -ngx_http_mp4_read_vmhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - size_t atom_size; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 vmhd atom"); - - atom_header = ngx_mp4_atom_header(mp4); - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - ngx_mp4_set_32value(atom_header, atom_size); - ngx_mp4_set_atom_name(atom_header, 'v', 'm', 'h', 'd'); - - trak = ngx_mp4_last_trak(mp4); - - atom = &trak->vmhd_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + atom_size; - - trak->vmhd_size += atom_size; - trak->out[NGX_HTTP_MP4_VMHD_ATOM].buf = atom; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read_smhd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - size_t atom_size; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 smhd atom"); - - atom_header = ngx_mp4_atom_header(mp4); - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - ngx_mp4_set_32value(atom_header, atom_size); - ngx_mp4_set_atom_name(atom_header, 's', 'm', 'h', 'd'); - - trak = ngx_mp4_last_trak(mp4); - - atom = &trak->smhd_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + atom_size; - - trak->smhd_size += atom_size; - trak->out[NGX_HTTP_MP4_SMHD_ATOM].buf = atom; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read_dinf_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - size_t atom_size; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 dinf atom"); - - atom_header = ngx_mp4_atom_header(mp4); - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - ngx_mp4_set_32value(atom_header, atom_size); - ngx_mp4_set_atom_name(atom_header, 'd', 'i', 'n', 'f'); - - trak = ngx_mp4_last_trak(mp4); - - atom = &trak->dinf_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + atom_size; - - trak->dinf_size += atom_size; - trak->out[NGX_HTTP_MP4_DINF_ATOM].buf = atom; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_read_stbl_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header; - ngx_buf_t *atom; - ngx_http_mp4_trak_t *trak; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "process stbl atom"); - - atom_header = ngx_mp4_atom_header(mp4); - ngx_mp4_set_atom_name(atom_header, 's', 't', 'b', 'l'); - - trak = ngx_mp4_last_trak(mp4); - - atom = &trak->stbl_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_header + sizeof(ngx_mp4_atom_header_t); - - trak->out[NGX_HTTP_MP4_STBL_ATOM].buf = atom; - - return ngx_http_mp4_read_atom(mp4, ngx_http_mp4_stbl_atoms, atom_data_size); -} - - -static void -ngx_http_mp4_update_stbl_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - ngx_buf_t *atom; - - trak->size += sizeof(ngx_mp4_atom_header_t); - atom = &trak->stbl_atom_buf; - ngx_mp4_set_32value(atom->pos, trak->size); -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char entries[4]; - - u_char media_size[4]; - u_char media_name[4]; -} ngx_mp4_stsd_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_stsd_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_table; - size_t atom_size; - ngx_buf_t *atom; - ngx_mp4_stsd_atom_t *stsd_atom; - ngx_http_mp4_trak_t *trak; - - /* sample description atom */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsd atom"); - - atom_header = ngx_mp4_atom_header(mp4); - stsd_atom = (ngx_mp4_stsd_atom_t *) atom_header; - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - atom_table = atom_header + atom_size; - ngx_mp4_set_32value(stsd_atom->size, atom_size); - ngx_mp4_set_atom_name(stsd_atom, 's', 't', 's', 'd'); - - if (ngx_mp4_atom_data_size(ngx_mp4_stsd_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stsd atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "stsd entries:%uD, media:%*s", - ngx_mp4_get_32value(stsd_atom->entries), - (size_t) 4, stsd_atom->media_name); - - trak = ngx_mp4_last_trak(mp4); - - atom = &trak->stsd_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_table; - - trak->out[NGX_HTTP_MP4_STSD_ATOM].buf = atom; - trak->size += atom_size; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char entries[4]; -} ngx_mp4_stts_atom_t; - -typedef struct { - u_char count[4]; - u_char duration[4]; -} ngx_mp4_stts_entry_t; - - -static ngx_int_t -ngx_http_mp4_read_stts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_table, *atom_end; - uint32_t entries; - ngx_buf_t *atom, *data; - ngx_mp4_stts_atom_t *stts_atom; - ngx_http_mp4_trak_t *trak; - - /* time-to-sample atom */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stts atom"); - - atom_header = ngx_mp4_atom_header(mp4); - stts_atom = (ngx_mp4_stts_atom_t *) atom_header; - ngx_mp4_set_atom_name(stts_atom, 's', 't', 't', 's'); - - if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stts atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - entries = ngx_mp4_get_32value(stts_atom->entries); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 time-to-sample entries:%uD", entries); - - if (ngx_mp4_atom_data_size(ngx_mp4_stts_atom_t) - + entries * sizeof(ngx_mp4_stts_entry_t) > atom_data_size) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stts atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - atom_table = atom_header + sizeof(ngx_mp4_stts_atom_t); - atom_end = atom_table + entries * sizeof(ngx_mp4_stts_entry_t); - - trak = ngx_mp4_last_trak(mp4); - trak->time_to_sample_entries = entries; - - atom = &trak->stts_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_table; - - data = &trak->stts_data_buf; - data->temporary = 1; - data->pos = atom_table; - data->last = atom_end; - - trak->out[NGX_HTTP_MP4_STTS_ATOM].buf = atom; - trak->out[NGX_HTTP_MP4_STTS_DATA].buf = data; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_update_stts_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - size_t atom_size; - ngx_buf_t *atom, *data; - ngx_mp4_stts_atom_t *stts_atom; - - /* - * mdia.minf.stbl.stts updating requires trak->timescale - * from mdia.mdhd atom which may reside after mdia.minf - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stts atom update"); - - data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf; - - if (data == NULL) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "no mp4 stts atoms were found in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - if (ngx_http_mp4_crop_stts_data(mp4, trak, 1) != NGX_OK) { - return NGX_ERROR; - } - - if (ngx_http_mp4_crop_stts_data(mp4, trak, 0) != NGX_OK) { - return NGX_ERROR; - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "time-to-sample entries:%uD", trak->time_to_sample_entries); - - atom_size = sizeof(ngx_mp4_stts_atom_t) + (data->last - data->pos); - trak->size += atom_size; - - atom = trak->out[NGX_HTTP_MP4_STTS_ATOM].buf; - stts_atom = (ngx_mp4_stts_atom_t *) atom->pos; - ngx_mp4_set_32value(stts_atom->size, atom_size); - ngx_mp4_set_32value(stts_atom->entries, trak->time_to_sample_entries); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_crop_stts_data(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, ngx_uint_t start) -{ - uint32_t count, duration, rest; - uint64_t start_time; - ngx_buf_t *data; - ngx_uint_t start_sample, entries, start_sec; - ngx_mp4_stts_entry_t *entry, *end; - - if (start) { - start_sec = mp4->start; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stts crop start_time:%ui", start_sec); - - } else if (mp4->length) { - start_sec = mp4->length; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stts crop end_time:%ui", start_sec); - - } else { - return NGX_OK; - } - - data = trak->out[NGX_HTTP_MP4_STTS_DATA].buf; - - start_time = (uint64_t) start_sec * trak->timescale / 1000; - - entries = trak->time_to_sample_entries; - start_sample = 0; - entry = (ngx_mp4_stts_entry_t *) data->pos; - end = (ngx_mp4_stts_entry_t *) data->last; - - while (entry < end) { - count = ngx_mp4_get_32value(entry->count); - duration = ngx_mp4_get_32value(entry->duration); - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "time:%uL, count:%uD, duration:%uD", - start_time, count, duration); - - if (start_time < (uint64_t) count * duration) { - start_sample += (ngx_uint_t) (start_time / duration); - rest = (uint32_t) (start_time / duration); - goto found; - } - - start_sample += count; - start_time -= count * duration; - entries--; - entry++; - } - - if (start) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "start time is out mp4 stts samples in \"%s\"", - mp4->file.name.data); - - return NGX_ERROR; - - } else { - trak->end_sample = trak->start_sample + start_sample; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "end_sample:%ui", trak->end_sample); - - return NGX_OK; - } - -found: - - if (start) { - ngx_mp4_set_32value(entry->count, count - rest); - data->pos = (u_char *) entry; - trak->time_to_sample_entries = entries; - trak->start_sample = start_sample; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "start_sample:%ui, new count:%uD", - trak->start_sample, count - rest); - - } else { - ngx_mp4_set_32value(entry->count, rest); - data->last = (u_char *) (entry + 1); - trak->time_to_sample_entries -= entries - 1; - trak->end_sample = trak->start_sample + start_sample; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "end_sample:%ui, new count:%uD", - trak->end_sample, rest); - } - - return NGX_OK; -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char entries[4]; -} ngx_http_mp4_stss_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_stss_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_table, *atom_end; - uint32_t entries; - ngx_buf_t *atom, *data; - ngx_http_mp4_trak_t *trak; - ngx_http_mp4_stss_atom_t *stss_atom; - - /* sync samples atom */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stss atom"); - - atom_header = ngx_mp4_atom_header(mp4); - stss_atom = (ngx_http_mp4_stss_atom_t *) atom_header; - ngx_mp4_set_atom_name(stss_atom, 's', 't', 's', 's'); - - if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stss atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - entries = ngx_mp4_get_32value(stss_atom->entries); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sync sample entries:%uD", entries); - - trak = ngx_mp4_last_trak(mp4); - trak->sync_samples_entries = entries; - - atom_table = atom_header + sizeof(ngx_http_mp4_stss_atom_t); - - atom = &trak->stss_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_table; - - if (ngx_mp4_atom_data_size(ngx_http_mp4_stss_atom_t) - + entries * sizeof(uint32_t) > atom_data_size) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stss atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - atom_end = atom_table + entries * sizeof(uint32_t); - - data = &trak->stss_data_buf; - data->temporary = 1; - data->pos = atom_table; - data->last = atom_end; - - trak->out[NGX_HTTP_MP4_STSS_ATOM].buf = atom; - trak->out[NGX_HTTP_MP4_STSS_DATA].buf = data; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_update_stss_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - size_t atom_size; - uint32_t sample, start_sample, *entry, *end; - ngx_buf_t *atom, *data; - ngx_http_mp4_stss_atom_t *stss_atom; - - /* - * mdia.minf.stbl.stss updating requires trak->start_sample - * from mdia.minf.stbl.stts which depends on value from mdia.mdhd - * atom which may reside after mdia.minf - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stss atom update"); - - data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf; - - if (data == NULL) { - return NGX_OK; - } - - ngx_http_mp4_crop_stss_data(mp4, trak, 1); - ngx_http_mp4_crop_stss_data(mp4, trak, 0); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sync sample entries:%uD", trak->sync_samples_entries); - - if (trak->sync_samples_entries) { - entry = (uint32_t *) data->pos; - end = (uint32_t *) data->last; - - start_sample = trak->start_sample; - - while (entry < end) { - sample = ngx_mp4_get_32value(entry); - sample -= start_sample; - ngx_mp4_set_32value(entry, sample); - entry++; - } - - } else { - trak->out[NGX_HTTP_MP4_STSS_DATA].buf = NULL; - } - - atom_size = sizeof(ngx_http_mp4_stss_atom_t) + (data->last - data->pos); - trak->size += atom_size; - - atom = trak->out[NGX_HTTP_MP4_STSS_ATOM].buf; - stss_atom = (ngx_http_mp4_stss_atom_t *) atom->pos; - - ngx_mp4_set_32value(stss_atom->size, atom_size); - ngx_mp4_set_32value(stss_atom->entries, trak->sync_samples_entries); - - return NGX_OK; -} - - -static void -ngx_http_mp4_crop_stss_data(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, ngx_uint_t start) -{ - uint32_t sample, start_sample, *entry, *end; - ngx_buf_t *data; - ngx_uint_t entries; - - /* sync samples starts from 1 */ - - if (start) { - start_sample = trak->start_sample + 1; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stss crop start_sample:%uD", start_sample); - - } else if (mp4->length) { - start_sample = trak->end_sample + 1; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stss crop end_sample:%uD", start_sample); - - } else { - return; - } - - data = trak->out[NGX_HTTP_MP4_STSS_DATA].buf; - - entries = trak->sync_samples_entries; - entry = (uint32_t *) data->pos; - end = (uint32_t *) data->last; - - while (entry < end) { - sample = ngx_mp4_get_32value(entry); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sync:%uD", sample); - - if (sample >= start_sample) { - goto found; - } - - entries--; - entry++; - } - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sample is out of mp4 stss atom"); - -found: - - if (start) { - data->pos = (u_char *) entry; - trak->sync_samples_entries = entries; - - } else { - data->last = (u_char *) entry; - trak->sync_samples_entries -= entries; - } -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char entries[4]; -} ngx_mp4_ctts_atom_t; - -typedef struct { - u_char count[4]; - u_char offset[4]; -} ngx_mp4_ctts_entry_t; - - -static ngx_int_t -ngx_http_mp4_read_ctts_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_table, *atom_end; - uint32_t entries; - ngx_buf_t *atom, *data; - ngx_mp4_ctts_atom_t *ctts_atom; - ngx_http_mp4_trak_t *trak; - - /* composition offsets atom */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 ctts atom"); - - atom_header = ngx_mp4_atom_header(mp4); - ctts_atom = (ngx_mp4_ctts_atom_t *) atom_header; - ngx_mp4_set_atom_name(ctts_atom, 'c', 't', 't', 's'); - - if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 ctts atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - entries = ngx_mp4_get_32value(ctts_atom->entries); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "composition offset entries:%uD", entries); - - trak = ngx_mp4_last_trak(mp4); - trak->composition_offset_entries = entries; - - atom_table = atom_header + sizeof(ngx_mp4_ctts_atom_t); - - atom = &trak->ctts_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_table; - - if (ngx_mp4_atom_data_size(ngx_mp4_ctts_atom_t) - + entries * sizeof(ngx_mp4_ctts_entry_t) > atom_data_size) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 ctts atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - atom_end = atom_table + entries * sizeof(ngx_mp4_ctts_entry_t); - - data = &trak->ctts_data_buf; - data->temporary = 1; - data->pos = atom_table; - data->last = atom_end; - - trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = atom; - trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = data; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static void -ngx_http_mp4_update_ctts_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - size_t atom_size; - ngx_buf_t *atom, *data; - ngx_mp4_ctts_atom_t *ctts_atom; - - /* - * mdia.minf.stbl.ctts updating requires trak->start_sample - * from mdia.minf.stbl.stts which depends on value from mdia.mdhd - * atom which may reside after mdia.minf - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 ctts atom update"); - - data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf; - - if (data == NULL) { - return; - } - - ngx_http_mp4_crop_ctts_data(mp4, trak, 1); - ngx_http_mp4_crop_ctts_data(mp4, trak, 0); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "composition offset entries:%uD", - trak->composition_offset_entries); - - if (trak->composition_offset_entries == 0) { - trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf = NULL; - trak->out[NGX_HTTP_MP4_CTTS_DATA].buf = NULL; - return; - } - - atom_size = sizeof(ngx_mp4_ctts_atom_t) + (data->last - data->pos); - trak->size += atom_size; - - atom = trak->out[NGX_HTTP_MP4_CTTS_ATOM].buf; - ctts_atom = (ngx_mp4_ctts_atom_t *) atom->pos; - - ngx_mp4_set_32value(ctts_atom->size, atom_size); - ngx_mp4_set_32value(ctts_atom->entries, trak->composition_offset_entries); - - return; -} - - -static void -ngx_http_mp4_crop_ctts_data(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, ngx_uint_t start) -{ - uint32_t count, start_sample, rest; - ngx_buf_t *data; - ngx_uint_t entries; - ngx_mp4_ctts_entry_t *entry, *end; - - /* sync samples starts from 1 */ - - if (start) { - start_sample = trak->start_sample + 1; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 ctts crop start_sample:%uD", start_sample); - - } else if (mp4->length) { - start_sample = trak->end_sample - trak->start_sample + 1; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 ctts crop end_sample:%uD", start_sample); - - } else { - return; - } - - data = trak->out[NGX_HTTP_MP4_CTTS_DATA].buf; - - entries = trak->composition_offset_entries; - entry = (ngx_mp4_ctts_entry_t *) data->pos; - end = (ngx_mp4_ctts_entry_t *) data->last; - - while (entry < end) { - count = ngx_mp4_get_32value(entry->count); - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sample:%uD, count:%uD, offset:%uD", - start_sample, count, ngx_mp4_get_32value(entry->offset)); - - if (start_sample <= count) { - rest = start_sample - 1; - goto found; - } - - start_sample -= count; - entries--; - entry++; - } - - if (start) { - data->pos = (u_char *) end; - trak->composition_offset_entries = 0; - } - - return; - -found: - - if (start) { - ngx_mp4_set_32value(entry->count, count - rest); - data->pos = (u_char *) entry; - trak->composition_offset_entries = entries; - - } else { - ngx_mp4_set_32value(entry->count, rest); - data->last = (u_char *) (entry + 1); - trak->composition_offset_entries -= entries - 1; - } -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char entries[4]; -} ngx_mp4_stsc_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_stsc_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_table, *atom_end; - uint32_t entries; - ngx_buf_t *atom, *data; - ngx_mp4_stsc_atom_t *stsc_atom; - ngx_http_mp4_trak_t *trak; - - /* sample-to-chunk atom */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsc atom"); - - atom_header = ngx_mp4_atom_header(mp4); - stsc_atom = (ngx_mp4_stsc_atom_t *) atom_header; - ngx_mp4_set_atom_name(stsc_atom, 's', 't', 's', 'c'); - - if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stsc atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - entries = ngx_mp4_get_32value(stsc_atom->entries); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sample-to-chunk entries:%uD", entries); - - if (ngx_mp4_atom_data_size(ngx_mp4_stsc_atom_t) - + entries * sizeof(ngx_mp4_stsc_entry_t) > atom_data_size) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stsc atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - atom_table = atom_header + sizeof(ngx_mp4_stsc_atom_t); - atom_end = atom_table + entries * sizeof(ngx_mp4_stsc_entry_t); - - trak = ngx_mp4_last_trak(mp4); - trak->sample_to_chunk_entries = entries; - - atom = &trak->stsc_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_table; - - data = &trak->stsc_data_buf; - data->temporary = 1; - data->pos = atom_table; - data->last = atom_end; - - trak->out[NGX_HTTP_MP4_STSC_ATOM].buf = atom; - trak->out[NGX_HTTP_MP4_STSC_DATA].buf = data; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_update_stsc_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - size_t atom_size; - uint32_t chunk; - ngx_buf_t *atom, *data; - ngx_mp4_stsc_atom_t *stsc_atom; - ngx_mp4_stsc_entry_t *entry, *end; - - /* - * mdia.minf.stbl.stsc updating requires trak->start_sample - * from mdia.minf.stbl.stts which depends on value from mdia.mdhd - * atom which may reside after mdia.minf - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stsc atom update"); - - data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf; - - if (data == NULL) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "no mp4 stsc atoms were found in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - if (trak->sample_to_chunk_entries == 0) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "zero number of entries in stsc atom in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - if (ngx_http_mp4_crop_stsc_data(mp4, trak, 1) != NGX_OK) { - return NGX_ERROR; - } - - if (ngx_http_mp4_crop_stsc_data(mp4, trak, 0) != NGX_OK) { - return NGX_ERROR; - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sample-to-chunk entries:%uD", - trak->sample_to_chunk_entries); - - entry = (ngx_mp4_stsc_entry_t *) data->pos; - end = (ngx_mp4_stsc_entry_t *) data->last; - - while (entry < end) { - chunk = ngx_mp4_get_32value(entry->chunk); - chunk -= trak->start_chunk; - ngx_mp4_set_32value(entry->chunk, chunk); - entry++; - } - - atom_size = sizeof(ngx_mp4_stsc_atom_t) - + trak->sample_to_chunk_entries * sizeof(ngx_mp4_stsc_entry_t); - - trak->size += atom_size; - - atom = trak->out[NGX_HTTP_MP4_STSC_ATOM].buf; - stsc_atom = (ngx_mp4_stsc_atom_t *) atom->pos; - - ngx_mp4_set_32value(stsc_atom->size, atom_size); - ngx_mp4_set_32value(stsc_atom->entries, trak->sample_to_chunk_entries); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_crop_stsc_data(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, ngx_uint_t start) -{ - uint32_t start_sample, chunk, samples, id, next_chunk, n, - prev_samples; - ngx_buf_t *data, *buf; - ngx_uint_t entries, target_chunk, chunk_samples; - ngx_mp4_stsc_entry_t *entry, *end, *first; - - entries = trak->sample_to_chunk_entries - 1; - - if (start) { - start_sample = (uint32_t) trak->start_sample; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stsc crop start_sample:%uD", start_sample); - - } else if (mp4->length) { - start_sample = (uint32_t) (trak->end_sample - trak->start_sample); - samples = 0; - - data = trak->out[NGX_HTTP_MP4_STSC_START].buf; - - if (data) { - entry = (ngx_mp4_stsc_entry_t *) data->pos; - samples = ngx_mp4_get_32value(entry->samples); - entries--; - - if (samples > start_sample) { - samples = start_sample; - ngx_mp4_set_32value(entry->samples, samples); - } - - start_sample -= samples; - } - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stsc crop end_sample:%uD, ext_samples:%uD", - start_sample, samples); - - } else { - return NGX_OK; - } - - data = trak->out[NGX_HTTP_MP4_STSC_DATA].buf; - - entry = (ngx_mp4_stsc_entry_t *) data->pos; - end = (ngx_mp4_stsc_entry_t *) data->last; - - chunk = ngx_mp4_get_32value(entry->chunk); - samples = ngx_mp4_get_32value(entry->samples); - id = ngx_mp4_get_32value(entry->id); - prev_samples = 0; - entry++; - - while (entry < end) { - - next_chunk = ngx_mp4_get_32value(entry->chunk); - - ngx_log_debug5(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sample:%uD, chunk:%uD, chunks:%uD, " - "samples:%uD, id:%uD", - start_sample, chunk, next_chunk - chunk, samples, id); - - n = (next_chunk - chunk) * samples; - - if (start_sample < n) { - goto found; - } - - start_sample -= n; - - prev_samples = samples; - chunk = next_chunk; - samples = ngx_mp4_get_32value(entry->samples); - id = ngx_mp4_get_32value(entry->id); - entries--; - entry++; - } - - next_chunk = trak->chunks + 1; - - ngx_log_debug4(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sample:%uD, chunk:%uD, chunks:%uD, samples:%uD", - start_sample, chunk, next_chunk - chunk, samples); - - n = (next_chunk - chunk) * samples; - - if (start_sample > n) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "%s time is out mp4 stsc chunks in \"%s\"", - start ? "start" : "end", mp4->file.name.data); - return NGX_ERROR; - } - -found: - - entries++; - entry--; - - if (samples == 0) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "zero number of samples in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - target_chunk = chunk - 1; - target_chunk += start_sample / samples; - chunk_samples = start_sample % samples; - - if (start) { - data->pos = (u_char *) entry; - - trak->sample_to_chunk_entries = entries; - trak->start_chunk = target_chunk; - trak->start_chunk_samples = chunk_samples; - - ngx_mp4_set_32value(entry->chunk, trak->start_chunk + 1); - - samples -= chunk_samples; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "start_chunk:%ui, start_chunk_samples:%ui", - trak->start_chunk, trak->start_chunk_samples); - - } else { - if (start_sample) { - data->last = (u_char *) (entry + 1); - trak->sample_to_chunk_entries -= entries - 1; - trak->end_chunk_samples = samples; - - } else { - data->last = (u_char *) entry; - trak->sample_to_chunk_entries -= entries; - trak->end_chunk_samples = prev_samples; - } - - if (chunk_samples) { - trak->end_chunk = target_chunk + 1; - trak->end_chunk_samples = chunk_samples; - - } else { - trak->end_chunk = target_chunk; - } - - samples = chunk_samples; - next_chunk = chunk + 1; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "end_chunk:%ui, end_chunk_samples:%ui", - trak->end_chunk, trak->end_chunk_samples); - } - - if (chunk_samples && next_chunk - target_chunk == 2) { - - ngx_mp4_set_32value(entry->samples, samples); - - } else if (chunk_samples && start) { - - first = &trak->stsc_start_chunk_entry; - ngx_mp4_set_32value(first->chunk, 1); - ngx_mp4_set_32value(first->samples, samples); - ngx_mp4_set_32value(first->id, id); - - buf = &trak->stsc_start_chunk_buf; - buf->temporary = 1; - buf->pos = (u_char *) first; - buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t); - - trak->out[NGX_HTTP_MP4_STSC_START].buf = buf; - - ngx_mp4_set_32value(entry->chunk, trak->start_chunk + 2); - - trak->sample_to_chunk_entries++; - - } else if (chunk_samples) { - - first = &trak->stsc_end_chunk_entry; - ngx_mp4_set_32value(first->chunk, trak->end_chunk - trak->start_chunk); - ngx_mp4_set_32value(first->samples, samples); - ngx_mp4_set_32value(first->id, id); - - buf = &trak->stsc_end_chunk_buf; - buf->temporary = 1; - buf->pos = (u_char *) first; - buf->last = (u_char *) first + sizeof(ngx_mp4_stsc_entry_t); - - trak->out[NGX_HTTP_MP4_STSC_END].buf = buf; - - trak->sample_to_chunk_entries++; - } - - return NGX_OK; -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char uniform_size[4]; - u_char entries[4]; -} ngx_mp4_stsz_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_stsz_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_table, *atom_end; - size_t atom_size; - uint32_t entries, size; - ngx_buf_t *atom, *data; - ngx_mp4_stsz_atom_t *stsz_atom; - ngx_http_mp4_trak_t *trak; - - /* sample sizes atom */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stsz atom"); - - atom_header = ngx_mp4_atom_header(mp4); - stsz_atom = (ngx_mp4_stsz_atom_t *) atom_header; - ngx_mp4_set_atom_name(stsz_atom, 's', 't', 's', 'z'); - - if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stsz atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - size = ngx_mp4_get_32value(stsz_atom->uniform_size); - entries = ngx_mp4_get_32value(stsz_atom->entries); - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "sample uniform size:%uD, entries:%uD", size, entries); - - trak = ngx_mp4_last_trak(mp4); - trak->sample_sizes_entries = entries; - - atom_table = atom_header + sizeof(ngx_mp4_stsz_atom_t); - - atom = &trak->stsz_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_table; - - trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf = atom; - - if (size == 0) { - if (ngx_mp4_atom_data_size(ngx_mp4_stsz_atom_t) - + entries * sizeof(uint32_t) > atom_data_size) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stsz atom too small", - mp4->file.name.data); - return NGX_ERROR; - } - - atom_end = atom_table + entries * sizeof(uint32_t); - - data = &trak->stsz_data_buf; - data->temporary = 1; - data->pos = atom_table; - data->last = atom_end; - - trak->out[NGX_HTTP_MP4_STSZ_DATA].buf = data; - - } else { - /* if size != 0 then all samples are the same size */ - /* TODO : chunk samples */ - atom_size = sizeof(ngx_mp4_atom_header_t) + (size_t) atom_data_size; - ngx_mp4_set_32value(atom_header, atom_size); - trak->size += atom_size; - } - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_update_stsz_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - size_t atom_size; - uint32_t *pos, *end, entries; - ngx_buf_t *atom, *data; - ngx_mp4_stsz_atom_t *stsz_atom; - - /* - * mdia.minf.stbl.stsz updating requires trak->start_sample - * from mdia.minf.stbl.stts which depends on value from mdia.mdhd - * atom which may reside after mdia.minf - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stsz atom update"); - - data = trak->out[NGX_HTTP_MP4_STSZ_DATA].buf; - - if (data) { - entries = trak->sample_sizes_entries; - - if (trak->start_sample > entries) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "start time is out mp4 stsz samples in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - entries -= trak->start_sample; - data->pos += trak->start_sample * sizeof(uint32_t); - end = (uint32_t *) data->pos; - - for (pos = end - trak->start_chunk_samples; pos < end; pos++) { - trak->start_chunk_samples_size += ngx_mp4_get_32value(pos); - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "chunk samples sizes:%uL", - trak->start_chunk_samples_size); - - if (mp4->length) { - if (trak->end_sample - trak->start_sample > entries) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "end time is out mp4 stsz samples in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - entries = trak->end_sample - trak->start_sample; - data->last = data->pos + entries * sizeof(uint32_t); - end = (uint32_t *) data->last; - - for (pos = end - trak->end_chunk_samples; pos < end; pos++) { - trak->end_chunk_samples_size += ngx_mp4_get_32value(pos); - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stsz end_chunk_samples_size:%uL", - trak->end_chunk_samples_size); - } - - atom_size = sizeof(ngx_mp4_stsz_atom_t) + (data->last - data->pos); - trak->size += atom_size; - - atom = trak->out[NGX_HTTP_MP4_STSZ_ATOM].buf; - stsz_atom = (ngx_mp4_stsz_atom_t *) atom->pos; - - ngx_mp4_set_32value(stsz_atom->size, atom_size); - ngx_mp4_set_32value(stsz_atom->entries, entries); - } - - return NGX_OK; -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char entries[4]; -} ngx_mp4_stco_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_stco_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_table, *atom_end; - uint32_t entries; - ngx_buf_t *atom, *data; - ngx_mp4_stco_atom_t *stco_atom; - ngx_http_mp4_trak_t *trak; - - /* chunk offsets atom */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 stco atom"); - - atom_header = ngx_mp4_atom_header(mp4); - stco_atom = (ngx_mp4_stco_atom_t *) atom_header; - ngx_mp4_set_atom_name(stco_atom, 's', 't', 'c', 'o'); - - if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stco atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - entries = ngx_mp4_get_32value(stco_atom->entries); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries); - - if (ngx_mp4_atom_data_size(ngx_mp4_stco_atom_t) - + entries * sizeof(uint32_t) > atom_data_size) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 stco atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - atom_table = atom_header + sizeof(ngx_mp4_stco_atom_t); - atom_end = atom_table + entries * sizeof(uint32_t); - - trak = ngx_mp4_last_trak(mp4); - trak->chunks = entries; - - atom = &trak->stco_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_table; - - data = &trak->stco_data_buf; - data->temporary = 1; - data->pos = atom_table; - data->last = atom_end; - - trak->out[NGX_HTTP_MP4_STCO_ATOM].buf = atom; - trak->out[NGX_HTTP_MP4_STCO_DATA].buf = data; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_update_stco_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - size_t atom_size; - uint32_t entries; - ngx_buf_t *atom, *data; - ngx_mp4_stco_atom_t *stco_atom; - - /* - * mdia.minf.stbl.stco updating requires trak->start_chunk - * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd - * atom which may reside after mdia.minf - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stco atom update"); - - data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf; - - if (data == NULL) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "no mp4 stco atoms were found in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - if (trak->start_chunk > trak->chunks) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "start time is out mp4 stco chunks in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - data->pos += trak->start_chunk * sizeof(uint32_t); - - trak->start_offset = ngx_mp4_get_32value(data->pos); - trak->start_offset += trak->start_chunk_samples_size; - ngx_mp4_set_32value(data->pos, trak->start_offset); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "start chunk offset:%O", trak->start_offset); - - if (mp4->length) { - - if (trak->end_chunk > trak->chunks) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "end time is out mp4 stco chunks in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - entries = trak->end_chunk - trak->start_chunk; - data->last = data->pos + entries * sizeof(uint32_t); - - if (entries) { - trak->end_offset = - ngx_mp4_get_32value(data->last - sizeof(uint32_t)); - trak->end_offset += trak->end_chunk_samples_size; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "end chunk offset:%O", trak->end_offset); - } - - } else { - entries = trak->chunks - trak->start_chunk; - trak->end_offset = mp4->mdat_data.buf->file_last; - } - - if (entries == 0) { - trak->start_offset = mp4->end; - trak->end_offset = 0; - } - - atom_size = sizeof(ngx_mp4_stco_atom_t) + (data->last - data->pos); - trak->size += atom_size; - - atom = trak->out[NGX_HTTP_MP4_STCO_ATOM].buf; - stco_atom = (ngx_mp4_stco_atom_t *) atom->pos; - - ngx_mp4_set_32value(stco_atom->size, atom_size); - ngx_mp4_set_32value(stco_atom->entries, entries); - - return NGX_OK; -} - - -static void -ngx_http_mp4_adjust_stco_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, int32_t adjustment) -{ - uint32_t offset, *entry, *end; - ngx_buf_t *data; - - /* - * moov.trak.mdia.minf.stbl.stco adjustment requires - * minimal start offset of all traks and new moov atom size - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 stco atom adjustment"); - - data = trak->out[NGX_HTTP_MP4_STCO_DATA].buf; - entry = (uint32_t *) data->pos; - end = (uint32_t *) data->last; - - while (entry < end) { - offset = ngx_mp4_get_32value(entry); - offset += adjustment; - ngx_mp4_set_32value(entry, offset); - entry++; - } -} - - -typedef struct { - u_char size[4]; - u_char name[4]; - u_char version[1]; - u_char flags[3]; - u_char entries[4]; -} ngx_mp4_co64_atom_t; - - -static ngx_int_t -ngx_http_mp4_read_co64_atom(ngx_http_mp4_file_t *mp4, uint64_t atom_data_size) -{ - u_char *atom_header, *atom_table, *atom_end; - uint32_t entries; - ngx_buf_t *atom, *data; - ngx_mp4_co64_atom_t *co64_atom; - ngx_http_mp4_trak_t *trak; - - /* chunk offsets atom */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "mp4 co64 atom"); - - atom_header = ngx_mp4_atom_header(mp4); - co64_atom = (ngx_mp4_co64_atom_t *) atom_header; - ngx_mp4_set_atom_name(co64_atom, 'c', 'o', '6', '4'); - - if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t) > atom_data_size) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 co64 atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - entries = ngx_mp4_get_32value(co64_atom->entries); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, "chunks:%uD", entries); - - if (ngx_mp4_atom_data_size(ngx_mp4_co64_atom_t) - + entries * sizeof(uint64_t) > atom_data_size) - { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "\"%s\" mp4 co64 atom too small", mp4->file.name.data); - return NGX_ERROR; - } - - atom_table = atom_header + sizeof(ngx_mp4_co64_atom_t); - atom_end = atom_table + entries * sizeof(uint64_t); - - trak = ngx_mp4_last_trak(mp4); - trak->chunks = entries; - - atom = &trak->co64_atom_buf; - atom->temporary = 1; - atom->pos = atom_header; - atom->last = atom_table; - - data = &trak->co64_data_buf; - data->temporary = 1; - data->pos = atom_table; - data->last = atom_end; - - trak->out[NGX_HTTP_MP4_CO64_ATOM].buf = atom; - trak->out[NGX_HTTP_MP4_CO64_DATA].buf = data; - - ngx_mp4_atom_next(mp4, atom_data_size); - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_mp4_update_co64_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak) -{ - size_t atom_size; - uint64_t entries; - ngx_buf_t *atom, *data; - ngx_mp4_co64_atom_t *co64_atom; - - /* - * mdia.minf.stbl.co64 updating requires trak->start_chunk - * from mdia.minf.stbl.stsc which depends on value from mdia.mdhd - * atom which may reside after mdia.minf - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 co64 atom update"); - - data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf; - - if (data == NULL) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "no mp4 co64 atoms were found in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - if (trak->start_chunk > trak->chunks) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "start time is out mp4 co64 chunks in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - data->pos += trak->start_chunk * sizeof(uint64_t); - - trak->start_offset = ngx_mp4_get_64value(data->pos); - trak->start_offset += trak->start_chunk_samples_size; - ngx_mp4_set_64value(data->pos, trak->start_offset); - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "start chunk offset:%O", trak->start_offset); - - if (mp4->length) { - - if (trak->end_chunk > trak->chunks) { - ngx_log_error(NGX_LOG_ERR, mp4->file.log, 0, - "end time is out mp4 co64 chunks in \"%s\"", - mp4->file.name.data); - return NGX_ERROR; - } - - entries = trak->end_chunk - trak->start_chunk; - data->last = data->pos + entries * sizeof(uint64_t); - - if (entries) { - trak->end_offset = - ngx_mp4_get_64value(data->last - sizeof(uint64_t)); - trak->end_offset += trak->end_chunk_samples_size; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "end chunk offset:%O", trak->end_offset); - } - - } else { - entries = trak->chunks - trak->start_chunk; - trak->end_offset = mp4->mdat_data.buf->file_last; - } - - if (entries == 0) { - trak->start_offset = mp4->end; - trak->end_offset = 0; - } - - atom_size = sizeof(ngx_mp4_co64_atom_t) + (data->last - data->pos); - trak->size += atom_size; - - atom = trak->out[NGX_HTTP_MP4_CO64_ATOM].buf; - co64_atom = (ngx_mp4_co64_atom_t *) atom->pos; - - ngx_mp4_set_32value(co64_atom->size, atom_size); - ngx_mp4_set_32value(co64_atom->entries, entries); - - return NGX_OK; -} - - -static void -ngx_http_mp4_adjust_co64_atom(ngx_http_mp4_file_t *mp4, - ngx_http_mp4_trak_t *trak, off_t adjustment) -{ - uint64_t offset, *entry, *end; - ngx_buf_t *data; - - /* - * moov.trak.mdia.minf.stbl.co64 adjustment requires - * minimal start offset of all traks and new moov atom size - */ - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, mp4->file.log, 0, - "mp4 co64 atom adjustment"); - - data = trak->out[NGX_HTTP_MP4_CO64_DATA].buf; - entry = (uint64_t *) data->pos; - end = (uint64_t *) data->last; - - while (entry < end) { - offset = ngx_mp4_get_64value(entry); - offset += adjustment; - ngx_mp4_set_64value(entry, offset); - entry++; - } -} - - -static char * -ngx_http_mp4(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_core_loc_conf_t *clcf; - - clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); - clcf->handler = ngx_http_mp4_handler; - - return NGX_CONF_OK; -} - - -static void * -ngx_http_mp4_create_conf(ngx_conf_t *cf) -{ - ngx_http_mp4_conf_t *conf; - - conf = ngx_palloc(cf->pool, sizeof(ngx_http_mp4_conf_t)); - if (conf == NULL) { - return NULL; - } - - conf->buffer_size = NGX_CONF_UNSET_SIZE; - conf->max_buffer_size = NGX_CONF_UNSET_SIZE; - - return conf; -} - - -static char * -ngx_http_mp4_merge_conf(ngx_conf_t *cf, void *parent, void *child) -{ - ngx_http_mp4_conf_t *prev = parent; - ngx_http_mp4_conf_t *conf = child; - - ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, 512 * 1024); - ngx_conf_merge_size_value(conf->max_buffer_size, prev->max_buffer_size, - 10 * 1024 * 1024); - - return NGX_CONF_OK; -} |