diff options
Diffstat (limited to 'chromium/third_party/ffmpeg/libavformat/mpegts.c')
| -rw-r--r-- | chromium/third_party/ffmpeg/libavformat/mpegts.c | 1123 |
1 files changed, 665 insertions, 458 deletions
diff --git a/chromium/third_party/ffmpeg/libavformat/mpegts.c b/chromium/third_party/ffmpeg/libavformat/mpegts.c index d67c63a4de2..0a5ac689614 100644 --- a/chromium/third_party/ffmpeg/libavformat/mpegts.c +++ b/chromium/third_party/ffmpeg/libavformat/mpegts.c @@ -29,7 +29,6 @@ #include "libavutil/avassert.h" #include "libavcodec/bytestream.h" #include "libavcodec/get_bits.h" -#include "libavcodec/mathops.h" #include "avformat.h" #include "mpegts.h" #include "internal.h" @@ -39,37 +38,46 @@ #include "isom.h" /* maximum size in which we look for synchronisation if - synchronisation is lost */ + * synchronisation is lost */ #define MAX_RESYNC_SIZE 65536 -#define MAX_PES_PAYLOAD 200*1024 +#define MAX_PES_PAYLOAD 200 * 1024 #define MAX_MP4_DESCR_COUNT 16 +#define MOD_UNLIKELY(modulus, dividend, divisor, prev_dividend) \ + do { \ + if ((prev_dividend) == 0 || (dividend) - (prev_dividend) != (divisor)) \ + (modulus) = (dividend) % (divisor); \ + (prev_dividend) = (dividend); \ + } while (0) + enum MpegTSFilterType { MPEGTS_PES, MPEGTS_SECTION, + MPEGTS_PCR, }; typedef struct MpegTSFilter MpegTSFilter; -typedef int PESCallback(MpegTSFilter *f, const uint8_t *buf, int len, int is_start, int64_t pos, int64_t cur_pcr); +typedef int PESCallback (MpegTSFilter *f, const uint8_t *buf, int len, + int is_start, int64_t pos); typedef struct MpegTSPESFilter { PESCallback *pes_cb; void *opaque; } MpegTSPESFilter; -typedef void SectionCallback(MpegTSFilter *f, const uint8_t *buf, int len); +typedef void SectionCallback (MpegTSFilter *f, const uint8_t *buf, int len); -typedef void SetServiceCallback(void *opaque, int ret); +typedef void SetServiceCallback (void *opaque, int ret); typedef struct MpegTSSectionFilter { int section_index; int section_h_size; uint8_t *section_buf; - unsigned int check_crc:1; - unsigned int end_of_section_reached:1; + unsigned int check_crc : 1; + unsigned int end_of_section_reached : 1; SectionCallback *section_cb; void *opaque; } MpegTSSectionFilter; @@ -78,6 +86,7 @@ struct MpegTSFilter { int pid; int es_id; int last_cc; /* last cc code (-1 if first packet) */ + int64_t last_pcr; enum MpegTSFilterType type; union { MpegTSPESFilter pes_filter; @@ -87,16 +96,19 @@ struct MpegTSFilter { #define MAX_PIDS_PER_PROGRAM 64 struct Program { - unsigned int id; //program id/service id + unsigned int id; // program id/service id unsigned int nb_pids; unsigned int pids[MAX_PIDS_PER_PROGRAM]; + + /** have we found pmt for this program */ + int pmt_found; }; struct MpegTSContext { const AVClass *class; /* user data */ AVFormatContext *stream; - /** raw packet size, including FEC if present */ + /** raw packet size, including FEC if present */ int raw_packet_size; int size_stat[3]; @@ -105,43 +117,47 @@ struct MpegTSContext { int64_t pos47_full; - /** if true, all pids are analyzed to find streams */ + /** if true, all pids are analyzed to find streams */ int auto_guess; - /** compute exact PCR for each transport stream packet */ + /** compute exact PCR for each transport stream packet */ int mpeg2ts_compute_pcr; /** fix dvb teletext pts */ int fix_teletext_pts; - int64_t cur_pcr; /**< used to estimate the exact PCR */ - int pcr_incr; /**< used to estimate the exact PCR */ + int64_t cur_pcr; /**< used to estimate the exact PCR */ + int pcr_incr; /**< used to estimate the exact PCR */ /* data needed to handle file based ts */ - /** stop parsing loop */ + /** stop parsing loop */ int stop_parse; - /** packet containing Audio/Video data */ + /** packet containing Audio/Video data */ AVPacket *pkt; - /** to detect seek */ + /** to detect seek */ int64_t last_pos; /******************************************/ /* private mpegts data */ /* scan context */ - /** structure to keep track of Program->pids mapping */ + /** structure to keep track of Program->pids mapping */ unsigned int nb_prg; struct Program *prg; int8_t crc_validity[NB_PID_MAX]; - /** filters for various streams specified by PMT + for the PAT and PMT */ MpegTSFilter *pids[NB_PID_MAX]; int current_pid; }; static const AVOption mpegtsraw_options[] = { - {"compute_pcr", "Compute exact PCR for each transport stream packet.", offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_INT, - {.i64 = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM }, + { "compute_pcr", "Compute exact PCR for each transport stream packet.", + offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_INT, + { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM }, + { "ts_packetsize", "Output option carrying the raw packet size.", + offsetof(MpegTSContext, raw_packet_size), AV_OPT_TYPE_INT, + { .i64 = 0 }, 0, 0, + AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY }, { NULL }, }; @@ -155,6 +171,8 @@ static const AVClass mpegtsraw_class = { static const AVOption mpegts_options[] = { {"fix_teletext_pts", "Try to fix pts values of dvb teletext streams.", offsetof(MpegTSContext, fix_teletext_pts), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, AV_OPT_FLAG_DECODING_PARAM }, + {"ts_packetsize", "Output option carrying the raw packet size.", offsetof(MpegTSContext, raw_packet_size), AV_OPT_TYPE_INT, + {.i64 = 0}, 0, 0, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY }, { NULL }, }; @@ -200,17 +218,27 @@ typedef struct PESContext { uint8_t header[MAX_PES_HEADER_SIZE]; AVBufferRef *buffer; SLConfigDescr sl; - int64_t last_pcr; } PESContext; extern AVInputFormat ff_mpegts_demuxer; +static struct Program * get_program(MpegTSContext *ts, unsigned int programid) +{ + int i; + for (i = 0; i < ts->nb_prg; i++) { + if (ts->prg[i].id == programid) { + return &ts->prg[i]; + } + } + return NULL; +} + static void clear_avprogram(MpegTSContext *ts, unsigned int programid) { AVProgram *prg = NULL; int i; - for(i=0; i<ts->stream->nb_programs; i++) - if(ts->stream->programs[i]->id == programid){ + for (i = 0; i < ts->stream->nb_programs; i++) + if (ts->stream->programs[i]->id == programid) { prg = ts->stream->programs[i]; break; } @@ -224,15 +252,17 @@ static void clear_program(MpegTSContext *ts, unsigned int programid) int i; clear_avprogram(ts, programid); - for(i=0; i<ts->nb_prg; i++) - if(ts->prg[i].id == programid) + for (i = 0; i < ts->nb_prg; i++) + if (ts->prg[i].id == programid) { ts->prg[i].nb_pids = 0; + ts->prg[i].pmt_found = 0; + } } static void clear_programs(MpegTSContext *ts) { av_freep(&ts->prg); - ts->nb_prg=0; + ts->nb_prg = 0; } static void add_pat_entry(MpegTSContext *ts, unsigned int programid) @@ -245,32 +275,36 @@ static void add_pat_entry(MpegTSContext *ts, unsigned int programid) p = &ts->prg[ts->nb_prg]; p->id = programid; p->nb_pids = 0; + p->pmt_found = 0; ts->nb_prg++; } -static void add_pid_to_pmt(MpegTSContext *ts, unsigned int programid, unsigned int pid) +static void add_pid_to_pmt(MpegTSContext *ts, unsigned int programid, + unsigned int pid) { - int i; - struct Program *p = NULL; - for(i=0; i<ts->nb_prg; i++) { - if(ts->prg[i].id == programid) { - p = &ts->prg[i]; - break; - } - } - if(!p) + struct Program *p = get_program(ts, programid); + if (!p) return; - if(p->nb_pids >= MAX_PIDS_PER_PROGRAM) + if (p->nb_pids >= MAX_PIDS_PER_PROGRAM) return; p->pids[p->nb_pids++] = pid; } +static void set_pmt_found(MpegTSContext *ts, unsigned int programid) +{ + struct Program *p = get_program(ts, programid); + if (!p) + return; + + p->pmt_found = 1; +} + static void set_pcr_pid(AVFormatContext *s, unsigned int programid, unsigned int pid) { int i; - for(i=0; i<s->nb_programs; i++) { - if(s->programs[i]->id == programid) { + for (i = 0; i < s->nb_programs; i++) { + if (s->programs[i]->id == programid) { s->programs[i]->pcr_pid = pid; break; } @@ -292,24 +326,22 @@ static int discard_pid(MpegTSContext *ts, unsigned int pid) struct Program *p; /* If none of the programs have .discard=AVDISCARD_ALL then there's - * no way we have to discard this packet - */ - for (k = 0; k < ts->stream->nb_programs; k++) { + * no way we have to discard this packet */ + for (k = 0; k < ts->stream->nb_programs; k++) if (ts->stream->programs[k]->discard == AVDISCARD_ALL) break; - } if (k == ts->stream->nb_programs) return 0; - for(i=0; i<ts->nb_prg; i++) { + for (i = 0; i < ts->nb_prg; i++) { p = &ts->prg[i]; - for(j=0; j<p->nb_pids; j++) { - if(p->pids[j] != pid) + for (j = 0; j < p->nb_pids; j++) { + if (p->pids[j] != pid) continue; - //is program with id p->id set to be discarded? - for(k=0; k<ts->stream->nb_programs; k++) { - if(ts->stream->programs[k]->id == p->id) { - if(ts->stream->programs[k]->discard == AVDISCARD_ALL) + // is program with id p->id set to be discarded? + for (k = 0; k < ts->stream->nb_programs; k++) { + if (ts->stream->programs[k]->id == p->id) { + if (ts->stream->programs[k]->discard == AVDISCARD_ALL) discarded++; else used++; @@ -355,15 +387,16 @@ static void write_section_data(AVFormatContext *s, MpegTSFilter *tss1, tss->section_h_size = len; } - if (tss->section_h_size != -1 && tss->section_index >= tss->section_h_size) { + if (tss->section_h_size != -1 && + tss->section_index >= tss->section_h_size) { int crc_valid = 1; tss->end_of_section_reached = 1; - if (tss->check_crc){ + if (tss->check_crc) { crc_valid = !av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1, tss->section_buf, tss->section_h_size); - if (crc_valid){ + if (crc_valid) { ts->crc_validity[ tss1->pid ] = 100; - }else if(ts->crc_validity[ tss1->pid ] > -10){ + }else if (ts->crc_validity[ tss1->pid ] > -10) { ts->crc_validity[ tss1->pid ]--; }else crc_valid = 2; @@ -373,13 +406,10 @@ static void write_section_data(AVFormatContext *s, MpegTSFilter *tss1, } } -static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts, unsigned int pid, - SectionCallback *section_cb, void *opaque, - int check_crc) - +static MpegTSFilter *mpegts_open_filter(MpegTSContext *ts, unsigned int pid, + enum MpegTSFilterType type) { MpegTSFilter *filter; - MpegTSSectionFilter *sec; av_dlog(ts->stream, "Filter: pid=0x%x\n", pid); @@ -389,15 +419,32 @@ static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts, unsigned int if (!filter) return NULL; ts->pids[pid] = filter; - filter->type = MPEGTS_SECTION; - filter->pid = pid; - filter->es_id = -1; + + filter->type = type; + filter->pid = pid; + filter->es_id = -1; filter->last_cc = -1; + filter->last_pcr= -1; + + return filter; +} + +static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts, + unsigned int pid, + SectionCallback *section_cb, + void *opaque, + int check_crc) +{ + MpegTSFilter *filter; + MpegTSSectionFilter *sec; + + if (!(filter = mpegts_open_filter(ts, pid, MPEGTS_SECTION))) + return NULL; sec = &filter->u.section_filter; - sec->section_cb = section_cb; - sec->opaque = opaque; + sec->section_cb = section_cb; + sec->opaque = opaque; sec->section_buf = av_malloc(MAX_SECTION_SIZE); - sec->check_crc = check_crc; + sec->check_crc = check_crc; if (!sec->section_buf) { av_free(filter); return NULL; @@ -406,28 +453,26 @@ static MpegTSFilter *mpegts_open_section_filter(MpegTSContext *ts, unsigned int } static MpegTSFilter *mpegts_open_pes_filter(MpegTSContext *ts, unsigned int pid, - PESCallback *pes_cb, - void *opaque) + PESCallback *pes_cb, + void *opaque) { MpegTSFilter *filter; MpegTSPESFilter *pes; - if (pid >= NB_PID_MAX || ts->pids[pid]) + if (!(filter = mpegts_open_filter(ts, pid, MPEGTS_PES))) return NULL; - filter = av_mallocz(sizeof(MpegTSFilter)); - if (!filter) - return NULL; - ts->pids[pid] = filter; - filter->type = MPEGTS_PES; - filter->pid = pid; - filter->es_id = -1; - filter->last_cc = -1; + pes = &filter->u.pes_filter; pes->pes_cb = pes_cb; pes->opaque = opaque; return filter; } +static MpegTSFilter *mpegts_open_pcr_filter(MpegTSContext *ts, unsigned int pid) +{ + return mpegts_open_filter(ts, pid, MPEGTS_PCR); +} + static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter) { int pid; @@ -449,20 +494,22 @@ static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter) ts->pids[pid] = NULL; } -static int analyze(const uint8_t *buf, int size, int packet_size, int *index){ +static int analyze(const uint8_t *buf, int size, int packet_size, int *index) +{ int stat[TS_MAX_PACKET_SIZE]; int i; - int best_score=0; + int best_score = 0; - memset(stat, 0, packet_size*sizeof(*stat)); + memset(stat, 0, packet_size * sizeof(*stat)); - for(i=0; i<size-3; i++){ - if(buf[i] == 0x47 && !(buf[i+1] & 0x80) && buf[i+3] != 0x47){ + for (i = 0; i < size - 3; i++) { + if (buf[i] == 0x47 && !(buf[i + 1] & 0x80) && buf[i + 3] != 0x47) { int x = i % packet_size; stat[x]++; - if(stat[x] > best_score){ - best_score= stat[x]; - if(index) *index= x; + if (stat[x] > best_score) { + best_score = stat[x]; + if (index) + *index = x; } } } @@ -476,18 +523,22 @@ static int get_packet_size(const uint8_t *buf, int size) int score, fec_score, dvhs_score; if (size < (TS_FEC_PACKET_SIZE * 5 + 1)) - return -1; + return AVERROR_INVALIDDATA; - score = analyze(buf, size, TS_PACKET_SIZE, NULL); - dvhs_score = analyze(buf, size, TS_DVHS_PACKET_SIZE, NULL); - fec_score= analyze(buf, size, TS_FEC_PACKET_SIZE, NULL); + score = analyze(buf, size, TS_PACKET_SIZE, NULL); + dvhs_score = analyze(buf, size, TS_DVHS_PACKET_SIZE, NULL); + fec_score = analyze(buf, size, TS_FEC_PACKET_SIZE, NULL); av_dlog(NULL, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score); - if (score > fec_score && score > dvhs_score) return TS_PACKET_SIZE; - else if(dvhs_score > score && dvhs_score > fec_score) return TS_DVHS_PACKET_SIZE; - else if(score < fec_score && dvhs_score < fec_score) return TS_FEC_PACKET_SIZE; - else return -1; + if (score > fec_score && score > dvhs_score) + return TS_PACKET_SIZE; + else if (dvhs_score > score && dvhs_score > fec_score) + return TS_DVHS_PACKET_SIZE; + else if (score < fec_score && dvhs_score < fec_score) + return TS_FEC_PACKET_SIZE; + else + return AVERROR_INVALIDDATA; } typedef struct SectionHeader { @@ -505,8 +556,8 @@ static inline int get8(const uint8_t **pp, const uint8_t *p_end) p = *pp; if (p >= p_end) - return -1; - c = *p++; + return AVERROR_INVALIDDATA; + c = *p++; *pp = p; return c; } @@ -518,9 +569,9 @@ static inline int get16(const uint8_t **pp, const uint8_t *p_end) p = *pp; if ((p + 1) >= p_end) - return -1; - c = AV_RB16(p); - p += 2; + return AVERROR_INVALIDDATA; + c = AV_RB16(p); + p += 2; *pp = p; return c; } @@ -532,7 +583,7 @@ static char *getstr8(const uint8_t **pp, const uint8_t *p_end) const uint8_t *p; char *str; - p = *pp; + p = *pp; len = get8(&p, p_end); if (len < 0) return NULL; @@ -543,7 +594,7 @@ static char *getstr8(const uint8_t **pp, const uint8_t *p_end) return NULL; memcpy(str, p, len); str[len] = '\0'; - p += len; + p += len; *pp = p; return str; } @@ -555,24 +606,24 @@ static int parse_section_header(SectionHeader *h, val = get8(pp, p_end); if (val < 0) - return -1; + return val; h->tid = val; *pp += 2; - val = get16(pp, p_end); + val = get16(pp, p_end); if (val < 0) - return -1; + return val; h->id = val; val = get8(pp, p_end); if (val < 0) - return -1; + return val; h->version = (val >> 1) & 0x1f; val = get8(pp, p_end); if (val < 0) - return -1; + return val; h->sec_num = val; val = get8(pp, p_end); if (val < 0) - return -1; + return val; h->last_sec_num = val; return 0; } @@ -586,94 +637,95 @@ typedef struct { static const StreamType ISO_types[] = { { 0x01, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO }, { 0x02, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO }, - { 0x03, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 }, - { 0x04, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 }, - { 0x0f, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC }, - { 0x10, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG4 }, + { 0x03, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 }, + { 0x04, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 }, + { 0x0f, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC }, + { 0x10, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG4 }, /* Makito encoder sets stream type 0x11 for AAC, * so auto-detect LOAS/LATM instead of hardcoding it. */ #if !CONFIG_LOAS_DEMUXER - { 0x11, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC_LATM }, /* LATM syntax */ + { 0x11, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC_LATM }, /* LATM syntax */ #endif - { 0x1b, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 }, - { 0x24, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC }, - { 0x42, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_CAVS }, - { 0xd1, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC }, - { 0xea, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 }, + { 0x1b, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 }, + { 0x24, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC }, + { 0x42, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_CAVS }, + { 0xd1, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC }, + { 0xea, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 }, { 0 }, }; static const StreamType HDMV_types[] = { - { 0x80, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_BLURAY }, - { 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, - { 0x82, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, - { 0x83, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_TRUEHD }, - { 0x84, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, - { 0x85, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD */ - { 0x86, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD MASTER*/ - { 0xa1, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, /* E-AC3 Secondary Audio */ - { 0xa2, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS Express Secondary Audio */ + { 0x80, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_BLURAY }, + { 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, + { 0x82, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, + { 0x83, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_TRUEHD }, + { 0x84, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, + { 0x85, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD */ + { 0x86, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD MASTER*/ + { 0xa1, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, /* E-AC3 Secondary Audio */ + { 0xa2, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS Express Secondary Audio */ { 0x90, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_HDMV_PGS_SUBTITLE }, { 0 }, }; /* ATSC ? */ static const StreamType MISC_types[] = { - { 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, - { 0x8a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, + { 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, + { 0x8a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, { 0 }, }; static const StreamType REGD_types[] = { - { MKTAG('d','r','a','c'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC }, - { MKTAG('A','C','-','3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, - { MKTAG('B','S','S','D'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_S302M }, - { MKTAG('D','T','S','1'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, - { MKTAG('D','T','S','2'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, - { MKTAG('D','T','S','3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, - { MKTAG('H','E','V','C'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC }, - { MKTAG('K','L','V','A'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_KLV }, - { MKTAG('V','C','-','1'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 }, + { MKTAG('d', 'r', 'a', 'c'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC }, + { MKTAG('A', 'C', '-', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, + { MKTAG('B', 'S', 'S', 'D'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_S302M }, + { MKTAG('D', 'T', 'S', '1'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, + { MKTAG('D', 'T', 'S', '2'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, + { MKTAG('D', 'T', 'S', '3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, + { MKTAG('H', 'E', 'V', 'C'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_HEVC }, + { MKTAG('K', 'L', 'V', 'A'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_KLV }, + { MKTAG('V', 'C', '-', '1'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 }, { 0 }, }; static const StreamType METADATA_types[] = { { MKTAG('K','L','V','A'), AVMEDIA_TYPE_DATA, AV_CODEC_ID_SMPTE_KLV }, + { MKTAG('I','D','3',' '), AVMEDIA_TYPE_DATA, AV_CODEC_ID_TIMED_ID3 }, { 0 }, }; /* descriptor present */ static const StreamType DESC_types[] = { - { 0x6a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, /* AC-3 descriptor */ - { 0x7a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, /* E-AC-3 descriptor */ - { 0x7b, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, + { 0x6a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, /* AC-3 descriptor */ + { 0x7a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, /* E-AC-3 descriptor */ + { 0x7b, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, { 0x56, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_TELETEXT }, { 0x59, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_SUBTITLE }, /* subtitling descriptor */ { 0 }, }; static void mpegts_find_stream_type(AVStream *st, - uint32_t stream_type, const StreamType *types) + uint32_t stream_type, + const StreamType *types) { if (avcodec_is_open(st->codec)) { av_log(NULL, AV_LOG_DEBUG, "cannot set stream info, codec is open\n"); return; } - for (; types->stream_type; types++) { + for (; types->stream_type; types++) if (stream_type == types->stream_type) { st->codec->codec_type = types->codec_type; st->codec->codec_id = types->codec_id; st->request_probe = 0; return; } - } } static int mpegts_set_stream_info(AVStream *st, PESContext *pes, uint32_t stream_type, uint32_t prog_reg_desc) { - int old_codec_type= st->codec->codec_type; + int old_codec_type = st->codec->codec_type; int old_codec_id = st->codec->codec_id; if (avcodec_is_open(st->codec)) { @@ -682,16 +734,16 @@ static int mpegts_set_stream_info(AVStream *st, PESContext *pes, } avpriv_set_pts_info(st, 33, 1, 90000); - st->priv_data = pes; + st->priv_data = pes; st->codec->codec_type = AVMEDIA_TYPE_DATA; st->codec->codec_id = AV_CODEC_ID_NONE; - st->need_parsing = AVSTREAM_PARSE_FULL; - pes->st = st; + st->need_parsing = AVSTREAM_PARSE_FULL; + pes->st = st; pes->stream_type = stream_type; av_log(pes->stream, AV_LOG_DEBUG, "stream=%d stream_type=%x pid=%x prog_reg_desc=%.4s\n", - st->index, pes->stream_type, pes->pid, (char*)&prog_reg_desc); + st->index, pes->stream_type, pes->pid, (char *)&prog_reg_desc); st->codec->codec_tag = pes->stream_type; @@ -718,23 +770,32 @@ static int mpegts_set_stream_info(AVStream *st, PESContext *pes, sub_st->id = pes->pid; avpriv_set_pts_info(sub_st, 33, 1, 90000); - sub_st->priv_data = sub_pes; + sub_st->priv_data = sub_pes; sub_st->codec->codec_type = AVMEDIA_TYPE_AUDIO; sub_st->codec->codec_id = AV_CODEC_ID_AC3; - sub_st->need_parsing = AVSTREAM_PARSE_FULL; - sub_pes->sub_st = pes->sub_st = sub_st; + sub_st->need_parsing = AVSTREAM_PARSE_FULL; + sub_pes->sub_st = pes->sub_st = sub_st; } } if (st->codec->codec_id == AV_CODEC_ID_NONE) mpegts_find_stream_type(st, pes->stream_type, MISC_types); - if (st->codec->codec_id == AV_CODEC_ID_NONE){ + if (st->codec->codec_id == AV_CODEC_ID_NONE) { st->codec->codec_id = old_codec_id; - st->codec->codec_type= old_codec_type; + st->codec->codec_type = old_codec_type; } return 0; } +static void reset_pes_packet_state(PESContext *pes) +{ + pes->pts = AV_NOPTS_VALUE; + pes->dts = AV_NOPTS_VALUE; + pes->data_index = 0; + pes->flags = 0; + av_buffer_unref(&pes->buffer); +} + static void new_pes_packet(PESContext *pes, AVPacket *pkt) { av_init_packet(pkt); @@ -743,12 +804,13 @@ static void new_pes_packet(PESContext *pes, AVPacket *pkt) pkt->data = pes->buffer->data; pkt->size = pes->data_index; - if(pes->total_size != MAX_PES_PAYLOAD && - pes->pes_header_size + pes->data_index != pes->total_size + PES_START_SIZE) { + if (pes->total_size != MAX_PES_PAYLOAD && + pes->pes_header_size + pes->data_index != pes->total_size + + PES_START_SIZE) { av_log(pes->stream, AV_LOG_WARNING, "PES packet size mismatch\n"); pes->flags |= AV_PKT_FLAG_CORRUPT; } - memset(pkt->data+pkt->size, 0, FF_INPUT_BUFFER_PADDING_SIZE); + memset(pkt->data + pkt->size, 0, FF_INPUT_BUFFER_PADDING_SIZE); // Separate out the AC3 substream from an HDMV combined TrueHD/AC3 PID if (pes->sub_st && pes->stream_type == 0x83 && pes->extended_stream_id == 0x76) @@ -758,15 +820,11 @@ static void new_pes_packet(PESContext *pes, AVPacket *pkt) pkt->pts = pes->pts; pkt->dts = pes->dts; /* store position of first TS packet of this PES packet */ - pkt->pos = pes->ts_packet_pos; + pkt->pos = pes->ts_packet_pos; pkt->flags = pes->flags; - /* reset pts values */ - pes->pts = AV_NOPTS_VALUE; - pes->dts = AV_NOPTS_VALUE; pes->buffer = NULL; - pes->data_index = 0; - pes->flags = 0; + reset_pes_packet_state(pes); } static uint64_t get_ts64(GetBitContext *gb, int bits) @@ -776,7 +834,8 @@ static uint64_t get_ts64(GetBitContext *gb, int bits) return get_bits64(gb, bits); } -static int read_sl_header(PESContext *pes, SLConfigDescr *sl, const uint8_t *buf, int buf_size) +static int read_sl_header(PESContext *pes, SLConfigDescr *sl, + const uint8_t *buf, int buf_size) { GetBitContext gb; int au_start_flag = 0, au_end_flag = 0, ocr_flag = 0, idle_flag = 0; @@ -784,7 +843,7 @@ static int read_sl_header(PESContext *pes, SLConfigDescr *sl, const uint8_t *buf int dts_flag = -1, cts_flag = -1; int64_t dts = AV_NOPTS_VALUE, cts = AV_NOPTS_VALUE; - init_get_bits(&gb, buf, buf_size*8); + init_get_bits(&gb, buf, buf_size * 8); if (sl->use_au_start) au_start_flag = get_bits1(&gb); @@ -845,31 +904,29 @@ static int read_sl_header(PESContext *pes, SLConfigDescr *sl, const uint8_t *buf /* return non zero if a packet could be constructed */ static int mpegts_push_data(MpegTSFilter *filter, const uint8_t *buf, int buf_size, int is_start, - int64_t pos, int64_t pcr) + int64_t pos) { - PESContext *pes = filter->u.pes_filter.opaque; + PESContext *pes = filter->u.pes_filter.opaque; MpegTSContext *ts = pes->ts; const uint8_t *p; int len, code; - if(!ts->pkt) + if (!ts->pkt) return 0; - if (pcr != -1) - pes->last_pcr = pcr; - if (is_start) { if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) { new_pes_packet(pes, ts->pkt); ts->stop_parse = 1; + } else { + reset_pes_packet_state(pes); } - pes->state = MPEGTS_HEADER; - pes->data_index = 0; + pes->state = MPEGTS_HEADER; pes->ts_packet_pos = pos; } p = buf; while (buf_size > 0) { - switch(pes->state) { + switch (pes->state) { case MPEGTS_HEADER: len = PES_START_SIZE - pes->data_index; if (len > buf_size) @@ -880,15 +937,17 @@ static int mpegts_push_data(MpegTSFilter *filter, buf_size -= len; if (pes->data_index == PES_START_SIZE) { /* we got all the PES or section header. We can now - decide */ + * decide */ if (pes->header[0] == 0x00 && pes->header[1] == 0x00 && pes->header[2] == 0x01) { /* it must be an mpeg2 PES stream */ code = pes->header[3] | 0x100; - av_dlog(pes->stream, "pid=%x pes_code=%#x\n", pes->pid, code); + av_dlog(pes->stream, "pid=%x pes_code=%#x\n", pes->pid, + code); if ((pes->st && pes->st->discard == AVDISCARD_ALL && - (!pes->sub_st || pes->sub_st->discard == AVDISCARD_ALL)) || + (!pes->sub_st || + pes->sub_st->discard == AVDISCARD_ALL)) || code == 0x1be) /* padding_stream */ goto skip; @@ -903,7 +962,7 @@ static int mpegts_push_data(MpegTSFilter *filter, pes->total_size = AV_RB16(pes->header + 4); /* NOTE: a zero total size means the PES size is - unbounded */ + * unbounded */ if (!pes->total_size) pes->total_size = MAX_PES_PAYLOAD; @@ -919,29 +978,31 @@ static int mpegts_push_data(MpegTSFilter *filter, code != 0x1f8) { /* ITU-T Rec. H.222.1 type E stream */ pes->state = MPEGTS_PESHEADER; if (pes->st->codec->codec_id == AV_CODEC_ID_NONE && !pes->st->request_probe) { - av_dlog(pes->stream, "pid=%x stream_type=%x probing\n", - pes->pid, pes->stream_type); - pes->st->request_probe= 1; + av_dlog(pes->stream, + "pid=%x stream_type=%x probing\n", + pes->pid, + pes->stream_type); + pes->st->request_probe = 1; } } else { - pes->state = MPEGTS_PAYLOAD; + pes->state = MPEGTS_PAYLOAD; pes->data_index = 0; } } else { /* otherwise, it should be a table */ /* skip packet */ - skip: +skip: pes->state = MPEGTS_SKIP; continue; } } break; - /**********************************************/ - /* PES packing parsing */ + /**********************************************/ + /* PES packing parsing */ case MPEGTS_PESHEADER: len = PES_HEADER_SIZE - pes->data_index; if (len < 0) - return -1; + return AVERROR_INVALIDDATA; if (len > buf_size) len = buf_size; memcpy(pes->header + pes->data_index, p, len); @@ -950,13 +1011,13 @@ static int mpegts_push_data(MpegTSFilter *filter, buf_size -= len; if (pes->data_index == PES_HEADER_SIZE) { pes->pes_header_size = pes->header[8] + 9; - pes->state = MPEGTS_PESHEADER_FILL; + pes->state = MPEGTS_PESHEADER_FILL; } break; case MPEGTS_PESHEADER_FILL: len = pes->pes_header_size - pes->data_index; if (len < 0) - return -1; + return AVERROR_INVALIDDATA; if (len > buf_size) len = buf_size; memcpy(pes->header + pes->data_index, p, len); @@ -972,10 +1033,7 @@ static int mpegts_push_data(MpegTSFilter *filter, pes->pts = AV_NOPTS_VALUE; pes->dts = AV_NOPTS_VALUE; if ((flags & 0xc0) == 0x80) { - pes->pts = ff_parse_pes_pts(r); - /* video pts is not monotonic, can't be used for dts */ - if (pes->st->codec->codec_type != AVMEDIA_TYPE_VIDEO) - pes->dts = pes->pts; + pes->dts = pes->pts = ff_parse_pes_pts(r); r += 5; } else if ((flags & 0xc0) == 0xc0) { pes->pts = ff_parse_pes_pts(r); @@ -987,9 +1045,9 @@ static int mpegts_push_data(MpegTSFilter *filter, if (flags & 0x01) { /* PES extension */ pes_ext = *r++; /* Skip PES private data, program packet sequence counter and P-STD buffer */ - skip = (pes_ext >> 4) & 0xb; + skip = (pes_ext >> 4) & 0xb; skip += skip & 0x9; - r += skip; + r += skip; if ((pes_ext & 0x41) == 0x01 && (r + 2) <= (pes->header + pes->pes_header_size)) { /* PES extension 2 */ @@ -1002,7 +1060,8 @@ static int mpegts_push_data(MpegTSFilter *filter, pes->state = MPEGTS_PAYLOAD; pes->data_index = 0; if (pes->stream_type == 0x12 && buf_size > 0) { - int sl_header_bytes = read_sl_header(pes, &pes->sl, p, buf_size); + int sl_header_bytes = read_sl_header(pes, &pes->sl, p, + buf_size); pes->pes_header_size += sl_header_bytes; p += sl_header_bytes; buf_size -= sl_header_bytes; @@ -1018,16 +1077,28 @@ static int mpegts_push_data(MpegTSFilter *filter, while ((p = av_find_program_from_stream(pes->stream, p, pes->st->index))) { if (p->pcr_pid != -1 && p->discard != AVDISCARD_ALL) { MpegTSFilter *f = pes->ts->pids[p->pcr_pid]; - if (f && f->type == MPEGTS_PES) { - PESContext *pcrpes = f->u.pes_filter.opaque; - if (pcrpes && pcrpes->last_pcr != -1 && pcrpes->st && pcrpes->st->discard != AVDISCARD_ALL) { + if (f) { + AVStream *st = NULL; + if (f->type == MPEGTS_PES) { + PESContext *pcrpes = f->u.pes_filter.opaque; + if (pcrpes) + st = pcrpes->st; + } else if (f->type == MPEGTS_PCR) { + int i; + for (i = 0; i < p->nb_stream_indexes; i++) { + AVStream *pst = pes->stream->streams[p->stream_index[i]]; + if (pst->codec->codec_type == AVMEDIA_TYPE_VIDEO) + st = pst; + } + } + if (f->last_pcr != -1 && st && st->discard != AVDISCARD_ALL) { // teletext packets do not always have correct timestamps, // the standard says they should be handled after 40.6 ms at most, // and the pcr error to this packet should be no more than 100 ms. // TODO: we should interpolate the PCR, not just use the last one - int64_t pcr = pcrpes->last_pcr / 300; - pes->st->pts_wrap_reference = pcrpes->st->pts_wrap_reference; - pes->st->pts_wrap_behavior = pcrpes->st->pts_wrap_behavior; + int64_t pcr = f->last_pcr / 300; + pes->st->pts_wrap_reference = st->pts_wrap_reference; + pes->st->pts_wrap_behavior = st->pts_wrap_behavior; if (pes->dts == AV_NOPTS_VALUE || pes->dts < pcr) { pes->pts = pes->dts = pcr; } else if (pes->dts > pcr + 3654 + 9000) { @@ -1042,33 +1113,36 @@ static int mpegts_push_data(MpegTSFilter *filter, } break; case MPEGTS_PAYLOAD: - if (buf_size > 0 && pes->buffer) { - if (pes->data_index > 0 && pes->data_index+buf_size > pes->total_size) { + if (pes->buffer) { + if (pes->data_index > 0 && + pes->data_index + buf_size > pes->total_size) { new_pes_packet(pes, ts->pkt); pes->total_size = MAX_PES_PAYLOAD; - pes->buffer = av_buffer_alloc(pes->total_size + FF_INPUT_BUFFER_PADDING_SIZE); + pes->buffer = av_buffer_alloc(pes->total_size + + FF_INPUT_BUFFER_PADDING_SIZE); if (!pes->buffer) return AVERROR(ENOMEM); ts->stop_parse = 1; - } else if (pes->data_index == 0 && buf_size > pes->total_size) { + } else if (pes->data_index == 0 && + buf_size > pes->total_size) { // pes packet size is < ts size packet and pes data is padded with 0xff // not sure if this is legal in ts but see issue #2392 buf_size = pes->total_size; } memcpy(pes->buffer->data + pes->data_index, p, buf_size); pes->data_index += buf_size; + /* emit complete packets with known packet size + * decreases demuxer delay for infrequent packets like subtitles from + * a couple of seconds to milliseconds for properly muxed files. + * total_size is the number of bytes following pes_packet_length + * in the pes header, i.e. not counting the first PES_START_SIZE bytes */ + if (!ts->stop_parse && pes->total_size < MAX_PES_PAYLOAD && + pes->pes_header_size + pes->data_index == pes->total_size + PES_START_SIZE) { + ts->stop_parse = 1; + new_pes_packet(pes, ts->pkt); + } } buf_size = 0; - /* emit complete packets with known packet size - * decreases demuxer delay for infrequent packets like subtitles from - * a couple of seconds to milliseconds for properly muxed files. - * total_size is the number of bytes following pes_packet_length - * in the pes header, i.e. not counting the first PES_START_SIZE bytes */ - if (!ts->stop_parse && pes->total_size < MAX_PES_PAYLOAD && - pes->pes_header_size + pes->data_index == pes->total_size + PES_START_SIZE) { - ts->stop_parse = 1; - new_pes_packet(pes, ts->pkt); - } break; case MPEGTS_SKIP: buf_size = 0; @@ -1088,15 +1162,14 @@ static PESContext *add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid) pes = av_mallocz(sizeof(PESContext)); if (!pes) return 0; - pes->ts = ts; - pes->stream = ts->stream; - pes->pid = pid; + pes->ts = ts; + pes->stream = ts->stream; + pes->pid = pid; pes->pcr_pid = pcr_pid; - pes->state = MPEGTS_SKIP; - pes->pts = AV_NOPTS_VALUE; - pes->dts = AV_NOPTS_VALUE; - pes->last_pcr = -1; - tss = mpegts_open_pes_filter(ts, pid, mpegts_push_data, pes); + pes->state = MPEGTS_SKIP; + pes->pts = AV_NOPTS_VALUE; + pes->dts = AV_NOPTS_VALUE; + tss = mpegts_open_pes_filter(ts, pid, mpegts_push_data, pes); if (!tss) { av_free(pes); return 0; @@ -1115,32 +1188,33 @@ typedef struct { int level; } MP4DescrParseContext; -static int init_MP4DescrParseContext( - MP4DescrParseContext *d, AVFormatContext *s, const uint8_t *buf, - unsigned size, Mp4Descr *descr, int max_descr_count) +static int init_MP4DescrParseContext(MP4DescrParseContext *d, AVFormatContext *s, + const uint8_t *buf, unsigned size, + Mp4Descr *descr, int max_descr_count) { int ret; - if (size > (1<<30)) + if (size > (1 << 30)) return AVERROR_INVALIDDATA; - if ((ret = ffio_init_context(&d->pb, (unsigned char*)buf, size, 0, - NULL, NULL, NULL, NULL)) < 0) + if ((ret = ffio_init_context(&d->pb, (unsigned char *)buf, size, 0, + NULL, NULL, NULL, NULL)) < 0) return ret; - d->s = s; - d->level = 0; - d->descr_count = 0; - d->descr = descr; - d->active_descr = NULL; + d->s = s; + d->level = 0; + d->descr_count = 0; + d->descr = descr; + d->active_descr = NULL; d->max_descr_count = max_descr_count; return 0; } -static void update_offsets(AVIOContext *pb, int64_t *off, int *len) { +static void update_offsets(AVIOContext *pb, int64_t *off, int *len) +{ int64_t new_off = avio_tell(pb); (*len) -= new_off - *off; - *off = new_off; + *off = new_off; } static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len, @@ -1149,8 +1223,9 @@ static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len, static int parse_mp4_descr_arr(MP4DescrParseContext *d, int64_t off, int len) { while (len > 0) { - if (parse_mp4_descr(d, off, len, 0) < 0) - return -1; + int ret = parse_mp4_descr(d, off, len, 0); + if (ret < 0) + return ret; update_offsets(&d->pb, &off, &len); } return 0; @@ -1174,9 +1249,9 @@ static int parse_MP4ODescrTag(MP4DescrParseContext *d, int64_t off, int len) if (len < 2) return 0; id_flags = avio_rb16(&d->pb); - if (!(id_flags & 0x0020)) { //URL_Flag + if (!(id_flags & 0x0020)) { // URL_Flag update_offsets(&d->pb, &off, &len); - return parse_mp4_descr_arr(d, off, len); //ES_Descriptor[] + return parse_mp4_descr_arr(d, off, len); // ES_Descriptor[] } else { return 0; } @@ -1186,7 +1261,7 @@ static int parse_MP4ESDescrTag(MP4DescrParseContext *d, int64_t off, int len) { int es_id = 0; if (d->descr_count >= d->max_descr_count) - return -1; + return AVERROR_INVALIDDATA; ff_mp4_parse_es_descr(&d->pb, &es_id); d->active_descr = d->descr + (d->descr_count++); @@ -1200,11 +1275,12 @@ static int parse_MP4ESDescrTag(MP4DescrParseContext *d, int64_t off, int len) return 0; } -static int parse_MP4DecConfigDescrTag(MP4DescrParseContext *d, int64_t off, int len) +static int parse_MP4DecConfigDescrTag(MP4DescrParseContext *d, int64_t off, + int len) { Mp4Descr *descr = d->active_descr; if (!descr) - return -1; + return AVERROR_INVALIDDATA; d->active_descr->dec_config_descr = av_malloc(len); if (!descr->dec_config_descr) return AVERROR(ENOMEM); @@ -1218,21 +1294,26 @@ static int parse_MP4SLDescrTag(MP4DescrParseContext *d, int64_t off, int len) Mp4Descr *descr = d->active_descr; int predefined; if (!descr) - return -1; + return AVERROR_INVALIDDATA; predefined = avio_r8(&d->pb); if (!predefined) { int lengths; int flags = avio_r8(&d->pb); - descr->sl.use_au_start = !!(flags & 0x80); - descr->sl.use_au_end = !!(flags & 0x40); - descr->sl.use_rand_acc_pt = !!(flags & 0x20); - descr->sl.use_padding = !!(flags & 0x08); - descr->sl.use_timestamps = !!(flags & 0x04); - descr->sl.use_idle = !!(flags & 0x02); - descr->sl.timestamp_res = avio_rb32(&d->pb); - avio_rb32(&d->pb); + descr->sl.use_au_start = !!(flags & 0x80); + descr->sl.use_au_end = !!(flags & 0x40); + descr->sl.use_rand_acc_pt = !!(flags & 0x20); + descr->sl.use_padding = !!(flags & 0x08); + descr->sl.use_timestamps = !!(flags & 0x04); + descr->sl.use_idle = !!(flags & 0x02); + descr->sl.timestamp_res = avio_rb32(&d->pb); + avio_rb32(&d->pb); descr->sl.timestamp_len = avio_r8(&d->pb); + if (descr->sl.timestamp_len > 64) { + avpriv_request_sample(NULL, "timestamp_len > 64"); + descr->sl.timestamp_len = 64; + return AVERROR_PATCHWELCOME; + } descr->sl.ocr_len = avio_r8(&d->pb); descr->sl.au_len = avio_r8(&d->pb); descr->sl.inst_bitrate_len = avio_r8(&d->pb); @@ -1247,13 +1328,16 @@ static int parse_MP4SLDescrTag(MP4DescrParseContext *d, int64_t off, int len) } static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len, - int target_tag) { + int target_tag) +{ int tag; int len1 = ff_mp4_read_descr(d->s, &d->pb, &tag); update_offsets(&d->pb, &off, &len); if (len < 0 || len1 > len || len1 <= 0) { - av_log(d->s, AV_LOG_ERROR, "Tag %x length violation new length %d bytes remaining %d\n", tag, len1, len); - return -1; + av_log(d->s, AV_LOG_ERROR, + "Tag %x length violation new length %d bytes remaining %d\n", + tag, len1, len); + return AVERROR_INVALIDDATA; } if (d->level++ >= MAX_LEVEL) { @@ -1262,7 +1346,8 @@ static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len, } if (target_tag && tag != target_tag) { - av_log(d->s, AV_LOG_ERROR, "Found tag %x expected %x\n", tag, target_tag); + av_log(d->s, AV_LOG_ERROR, "Found tag %x expected %x\n", tag, + target_tag); goto done; } @@ -1284,6 +1369,7 @@ static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len, break; } + done: d->level--; avio_seek(&d->pb, off + len1, SEEK_SET); @@ -1294,36 +1380,43 @@ static int mp4_read_iods(AVFormatContext *s, const uint8_t *buf, unsigned size, Mp4Descr *descr, int *descr_count, int max_descr_count) { MP4DescrParseContext d; - if (init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count) < 0) - return -1; + int ret; + + ret = init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count); + if (ret < 0) + return ret; - parse_mp4_descr(&d, avio_tell(&d.pb), size, MP4IODescrTag); + ret = parse_mp4_descr(&d, avio_tell(&d.pb), size, MP4IODescrTag); *descr_count = d.descr_count; - return 0; + return ret; } static int mp4_read_od(AVFormatContext *s, const uint8_t *buf, unsigned size, Mp4Descr *descr, int *descr_count, int max_descr_count) { MP4DescrParseContext d; - if (init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count) < 0) - return -1; + int ret; - parse_mp4_descr_arr(&d, avio_tell(&d.pb), size); + ret = init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count); + if (ret < 0) + return ret; + + ret = parse_mp4_descr_arr(&d, avio_tell(&d.pb), size); *descr_count = d.descr_count; - return 0; + return ret; } -static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section, int section_len) +static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section, + int section_len) { MpegTSContext *ts = filter->u.section_filter.opaque; SectionHeader h; const uint8_t *p, *p_end; AVIOContext pb; - Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = {{ 0 }}; int mp4_descr_count = 0; + Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = { { 0 } }; int i, pid; AVFormatContext *s = ts->stream; @@ -1334,30 +1427,31 @@ static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section, int section_le if (h.tid != M4OD_TID) return; - mp4_read_od(s, p, (unsigned)(p_end - p), mp4_descr, &mp4_descr_count, MAX_MP4_DESCR_COUNT); + mp4_read_od(s, p, (unsigned) (p_end - p), mp4_descr, &mp4_descr_count, + MAX_MP4_DESCR_COUNT); for (pid = 0; pid < NB_PID_MAX; pid++) { if (!ts->pids[pid]) - continue; + continue; for (i = 0; i < mp4_descr_count; i++) { PESContext *pes; AVStream *st; if (ts->pids[pid]->es_id != mp4_descr[i].es_id) continue; - if (!(ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES)) { + if (ts->pids[pid]->type != MPEGTS_PES) { av_log(s, AV_LOG_ERROR, "pid %x is not PES\n", pid); continue; } pes = ts->pids[pid]->u.pes_filter.opaque; - st = pes->st; - if (!st) { + st = pes->st; + if (!st) continue; - } pes->sl = mp4_descr[i].sl; ffio_init_context(&pb, mp4_descr[i].dec_config_descr, - mp4_descr[i].dec_config_descr_len, 0, NULL, NULL, NULL, NULL); + mp4_descr[i].dec_config_descr_len, 0, + NULL, NULL, NULL, NULL); ff_mp4_read_dec_config_descr(s, st, &pb); if (st->codec->codec_id == AV_CODEC_ID_AAC && st->codec->extradata_size > 0) @@ -1367,13 +1461,13 @@ static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section, int section_le st->need_parsing = 0; if (st->codec->codec_id <= AV_CODEC_ID_NONE) { - } else if (st->codec->codec_id < AV_CODEC_ID_FIRST_AUDIO) { + // do nothing + } else if (st->codec->codec_id < AV_CODEC_ID_FIRST_AUDIO) st->codec->codec_type = AVMEDIA_TYPE_VIDEO; - } else if (st->codec->codec_id < AV_CODEC_ID_FIRST_SUBTITLE) { + else if (st->codec->codec_id < AV_CODEC_ID_FIRST_SUBTITLE) st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - } else if (st->codec->codec_id < AV_CODEC_ID_FIRST_UNKNOWN) { + else if (st->codec->codec_id < AV_CODEC_ID_FIRST_UNKNOWN) st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE; - } } } for (i = 0; i < mp4_descr_count; i++) @@ -1392,13 +1486,13 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type desc_tag = get8(pp, desc_list_end); if (desc_tag < 0) - return -1; + return AVERROR_INVALIDDATA; desc_len = get8(pp, desc_list_end); if (desc_len < 0) - return -1; + return AVERROR_INVALIDDATA; desc_end = *pp + desc_len; if (desc_end > desc_list_end) - return -1; + return AVERROR_INVALIDDATA; av_dlog(fc, "tag: 0x%02x len=%d\n", desc_tag, desc_len); @@ -1406,73 +1500,149 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type stream_type == STREAM_TYPE_PRIVATE_DATA) mpegts_find_stream_type(st, desc_tag, DESC_types); - switch(desc_tag) { + switch (desc_tag) { case 0x1E: /* SL descriptor */ desc_es_id = get16(pp, desc_end); if (ts && ts->pids[pid]) ts->pids[pid]->es_id = desc_es_id; for (i = 0; i < mp4_descr_count; i++) - if (mp4_descr[i].dec_config_descr_len && - mp4_descr[i].es_id == desc_es_id) { - AVIOContext pb; - ffio_init_context(&pb, mp4_descr[i].dec_config_descr, - mp4_descr[i].dec_config_descr_len, 0, NULL, NULL, NULL, NULL); - ff_mp4_read_dec_config_descr(fc, st, &pb); - if (st->codec->codec_id == AV_CODEC_ID_AAC && - st->codec->extradata_size > 0) - st->need_parsing = 0; - if (st->codec->codec_id == AV_CODEC_ID_MPEG4SYSTEMS) - mpegts_open_section_filter(ts, pid, m4sl_cb, ts, 1); - } + if (mp4_descr[i].dec_config_descr_len && + mp4_descr[i].es_id == desc_es_id) { + AVIOContext pb; + ffio_init_context(&pb, mp4_descr[i].dec_config_descr, + mp4_descr[i].dec_config_descr_len, 0, + NULL, NULL, NULL, NULL); + ff_mp4_read_dec_config_descr(fc, st, &pb); + if (st->codec->codec_id == AV_CODEC_ID_AAC && + st->codec->extradata_size > 0) + st->need_parsing = 0; + if (st->codec->codec_id == AV_CODEC_ID_MPEG4SYSTEMS) + mpegts_open_section_filter(ts, pid, m4sl_cb, ts, 1); + } break; case 0x1F: /* FMC descriptor */ get16(pp, desc_end); - if (mp4_descr_count > 0 && (st->codec->codec_id == AV_CODEC_ID_AAC_LATM || st->request_probe>0) && + if (mp4_descr_count > 0 && + (st->codec->codec_id == AV_CODEC_ID_AAC_LATM || st->request_probe > 0) && mp4_descr->dec_config_descr_len && mp4_descr->es_id == pid) { AVIOContext pb; ffio_init_context(&pb, mp4_descr->dec_config_descr, - mp4_descr->dec_config_descr_len, 0, NULL, NULL, NULL, NULL); + mp4_descr->dec_config_descr_len, 0, + NULL, NULL, NULL, NULL); ff_mp4_read_dec_config_descr(fc, st, &pb); if (st->codec->codec_id == AV_CODEC_ID_AAC && - st->codec->extradata_size > 0){ - st->request_probe= st->need_parsing = 0; - st->codec->codec_type= AVMEDIA_TYPE_AUDIO; + st->codec->extradata_size > 0) { + st->request_probe = st->need_parsing = 0; + st->codec->codec_type = AVMEDIA_TYPE_AUDIO; } } break; case 0x56: /* DVB teletext descriptor */ - language[0] = get8(pp, desc_end); - language[1] = get8(pp, desc_end); - language[2] = get8(pp, desc_end); - language[3] = 0; - av_dict_set(&st->metadata, "language", language, 0); + { + uint8_t *extradata = NULL; + int language_count = desc_len / 5; + + if (desc_len > 0 && desc_len % 5 != 0) + return AVERROR_INVALIDDATA; + + if (language_count > 0) { + /* 4 bytes per language code (3 bytes) with comma or NUL byte should fit language buffer */ + if (language_count > sizeof(language) / 4) { + language_count = sizeof(language) / 4; + } + + if (st->codec->extradata == NULL) { + if (ff_alloc_extradata(st->codec, language_count * 2)) { + return AVERROR(ENOMEM); + } + } + + if (st->codec->extradata_size < language_count * 2) + return AVERROR_INVALIDDATA; + + extradata = st->codec->extradata; + + for (i = 0; i < language_count; i++) { + language[i * 4 + 0] = get8(pp, desc_end); + language[i * 4 + 1] = get8(pp, desc_end); + language[i * 4 + 2] = get8(pp, desc_end); + language[i * 4 + 3] = ','; + + memcpy(extradata, *pp, 2); + extradata += 2; + + *pp += 2; + } + + language[i * 4 - 1] = 0; + av_dict_set(&st->metadata, "language", language, 0); + } + } break; case 0x59: /* subtitling descriptor */ - language[0] = get8(pp, desc_end); - language[1] = get8(pp, desc_end); - language[2] = get8(pp, desc_end); - language[3] = 0; - /* hearing impaired subtitles detection */ - switch(get8(pp, desc_end)) { - case 0x20: /* DVB subtitles (for the hard of hearing) with no monitor aspect ratio criticality */ - case 0x21: /* DVB subtitles (for the hard of hearing) for display on 4:3 aspect ratio monitor */ - case 0x22: /* DVB subtitles (for the hard of hearing) for display on 16:9 aspect ratio monitor */ - case 0x23: /* DVB subtitles (for the hard of hearing) for display on 2.21:1 aspect ratio monitor */ - case 0x24: /* DVB subtitles (for the hard of hearing) for display on a high definition monitor */ - case 0x25: /* DVB subtitles (for the hard of hearing) with plano-stereoscopic disparity for display on a high definition monitor */ - st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED; - break; - } - if (st->codec->extradata) { - if (st->codec->extradata_size == 4 && memcmp(st->codec->extradata, *pp, 4)) - avpriv_request_sample(fc, "DVB sub with multiple IDs"); - } else { - if (!ff_alloc_extradata(st->codec, 4)) { - memcpy(st->codec->extradata, *pp, 4); + { + /* 8 bytes per DVB subtitle substream data: + * ISO_639_language_code (3 bytes), + * subtitling_type (1 byte), + * composition_page_id (2 bytes), + * ancillary_page_id (2 bytes) */ + int language_count = desc_len / 8; + + if (desc_len > 0 && desc_len % 8 != 0) + return AVERROR_INVALIDDATA; + + if (language_count > 1) { + avpriv_request_sample(fc, "DVB subtitles with multiple languages"); + } + + if (language_count > 0) { + uint8_t *extradata; + + /* 4 bytes per language code (3 bytes) with comma or NUL byte should fit language buffer */ + if (language_count > sizeof(language) / 4) { + language_count = sizeof(language) / 4; + } + + if (st->codec->extradata == NULL) { + if (ff_alloc_extradata(st->codec, language_count * 5)) { + return AVERROR(ENOMEM); + } + } + + if (st->codec->extradata_size < language_count * 5) + return AVERROR_INVALIDDATA; + + extradata = st->codec->extradata; + + for (i = 0; i < language_count; i++) { + language[i * 4 + 0] = get8(pp, desc_end); + language[i * 4 + 1] = get8(pp, desc_end); + language[i * 4 + 2] = get8(pp, desc_end); + language[i * 4 + 3] = ','; + + /* hearing impaired subtitles detection using subtitling_type */ + switch (*pp[0]) { + case 0x20: /* DVB subtitles (for the hard of hearing) with no monitor aspect ratio criticality */ + case 0x21: /* DVB subtitles (for the hard of hearing) for display on 4:3 aspect ratio monitor */ + case 0x22: /* DVB subtitles (for the hard of hearing) for display on 16:9 aspect ratio monitor */ + case 0x23: /* DVB subtitles (for the hard of hearing) for display on 2.21:1 aspect ratio monitor */ + case 0x24: /* DVB subtitles (for the hard of hearing) for display on a high definition monitor */ + case 0x25: /* DVB subtitles (for the hard of hearing) with plano-stereoscopic disparity for display on a high definition monitor */ + st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED; + break; + } + + extradata[4] = get8(pp, desc_end); /* subtitling_type */ + memcpy(extradata, *pp, 4); /* composition_page_id and ancillary_page_id */ + extradata += 5; + + *pp += 4; + } + + language[i * 4 - 1] = 0; + av_dict_set(&st->metadata, "language", language, 0); } } - *pp += 4; - av_dict_set(&st->metadata, "language", language, 0); break; case 0x0a: /* ISO 639 language descriptor */ for (i = 0; i + 4 <= desc_len; i += 4) { @@ -1480,11 +1650,17 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type language[i + 1] = get8(pp, desc_end); language[i + 2] = get8(pp, desc_end); language[i + 3] = ','; - switch (get8(pp, desc_end)) { - case 0x01: st->disposition |= AV_DISPOSITION_CLEAN_EFFECTS; break; - case 0x02: st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED; break; - case 0x03: st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED; break; - } + switch (get8(pp, desc_end)) { + case 0x01: + st->disposition |= AV_DISPOSITION_CLEAN_EFFECTS; + break; + case 0x02: + st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED; + break; + case 0x03: + st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED; + break; + } } if (i) { language[i - 1] = 0; @@ -1493,7 +1669,7 @@ int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type break; case 0x05: /* registration descriptor */ st->codec->codec_tag = bytestream_get_le32(pp); - av_dlog(fc, "reg_desc=%.4s\n", (char*)&st->codec->codec_tag); + av_dlog(fc, "reg_desc=%.4s\n", (char *)&st->codec->codec_tag); if (st->codec->codec_id == AV_CODEC_ID_NONE) mpegts_find_stream_type(st, st->codec->codec_tag, REGD_types); break; @@ -1527,8 +1703,8 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len int desc_list_len; uint32_t prog_reg_desc = 0; /* registration descriptor */ - Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = {{ 0 }}; int mp4_descr_count = 0; + Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = { { 0 } }; int i; av_dlog(ts->stream, "PMT: len %i\n", section_len); @@ -1540,7 +1716,7 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len return; av_dlog(ts->stream, "sid=0x%x sec_num=%d/%d\n", - h->id, h->sec_num, h->last_sec_num); + h->id, h->sec_num, h->last_sec_num); if (h->tid != PMT_TID) return; @@ -1559,15 +1735,15 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len if (program_info_length < 0) return; program_info_length &= 0xfff; - while(program_info_length >= 2) { + while (program_info_length >= 2) { uint8_t tag, len; tag = get8(&p, p_end); len = get8(&p, p_end); av_dlog(ts->stream, "program tag: 0x%02x len=%d\n", tag, len); - if(len > program_info_length - 2) - //something else is broken, exit the program_descriptors_loop + if (len > program_info_length - 2) + // something else is broken, exit the program_descriptors_loop break; program_info_length -= len + 2; if (tag == 0x1d) { // IOD descriptor @@ -1590,7 +1766,10 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len if (!ts->stream->nb_streams) ts->stop_parse = 2; - for(;;) { + set_pmt_found(ts, h->id); + + + for (;;) { st = 0; pes = NULL; stream_type = get8(&p, p_end); @@ -1598,23 +1777,24 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len break; pid = get16(&p, p_end); if (pid < 0) - break; + goto out; pid &= 0x1fff; if (pid == ts->current_pid) - break; + goto out; /* now create stream */ if (ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES) { pes = ts->pids[pid]->u.pes_filter.opaque; if (!pes->st) { - pes->st = avformat_new_stream(pes->stream, NULL); + pes->st = avformat_new_stream(pes->stream, NULL); if (!pes->st) goto out; pes->st->id = pes->pid; } st = pes->st; } else if (stream_type != 0x13) { - if (ts->pids[pid]) mpegts_close_filter(ts, ts->pids[pid]); //wrongly added sdt filter probably + if (ts->pids[pid]) + mpegts_close_filter(ts, ts->pids[pid]); // wrongly added sdt filter probably pes = add_pes_stream(ts, pid, pcr_pid); if (pes) { st = avformat_new_stream(pes->stream, NULL); @@ -1647,25 +1827,31 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len desc_list_len = get16(&p, p_end); if (desc_list_len < 0) - break; + goto out; desc_list_len &= 0xfff; - desc_list_end = p + desc_list_len; + desc_list_end = p + desc_list_len; if (desc_list_end > p_end) - break; - for(;;) { - if (ff_parse_mpeg2_descriptor(ts->stream, st, stream_type, &p, desc_list_end, - mp4_descr, mp4_descr_count, pid, ts) < 0) + goto out; + for (;;) { + if (ff_parse_mpeg2_descriptor(ts->stream, st, stream_type, &p, + desc_list_end, mp4_descr, + mp4_descr_count, pid, ts) < 0) break; - if (pes && prog_reg_desc == AV_RL32("HDMV") && stream_type == 0x83 && pes->sub_st) { - ff_program_add_stream_index(ts->stream, h->id, pes->sub_st->index); + if (pes && prog_reg_desc == AV_RL32("HDMV") && + stream_type == 0x83 && pes->sub_st) { + ff_program_add_stream_index(ts->stream, h->id, + pes->sub_st->index); pes->sub_st->codec->codec_tag = st->codec->codec_tag; } } p = desc_list_end; } - out: + if (!ts->pids[pcr_pid]) + mpegts_open_pcr_filter(ts, pcr_pid); + +out: for (i = 0; i < mp4_descr_count; i++) av_free(mp4_descr[i].dec_config_descr); } @@ -1682,7 +1868,7 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len hex_dump_debug(ts->stream, section, section_len); p_end = section + section_len - 4; - p = section; + p = section; if (parse_section_header(h, &p, p_end) < 0) return; if (h->tid != PAT_TID) @@ -1691,7 +1877,7 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len ts->stream->ts_id = h->id; clear_programs(ts); - for(;;) { + for (;;) { sid = get16(&p, p_end); if (sid < 0) break; @@ -1721,7 +1907,7 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len if (!ts->pids[pmt_pid]) mpegts_open_section_filter(ts, pmt_pid, pmt_cb, ts, 1); add_pat_entry(ts, sid); - add_pid_to_pmt(ts, sid, 0); //add pat pid to program + add_pid_to_pmt(ts, sid, 0); // add pat pid to program add_pid_to_pmt(ts, sid, pmt_pid); } } @@ -1729,7 +1915,7 @@ static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len if (sid < 0) { int i,j; for (j=0; j<ts->stream->nb_programs; j++) { - for (i=0; i<ts->nb_prg; i++) + for (i = 0; i < ts->nb_prg; i++) if (ts->prg[i].id == ts->stream->programs[j]->id) break; if (i==ts->nb_prg) @@ -1750,7 +1936,7 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len hex_dump_debug(ts->stream, section, section_len); p_end = section + section_len - 4; - p = section; + p = section; if (parse_section_header(h, &p, p_end) < 0) return; if (h->tid != SDT_TID) @@ -1761,7 +1947,7 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len val = get8(&p, p_end); if (val < 0) return; - for(;;) { + for (;;) { sid = get16(&p, p_end); if (sid < 0) break; @@ -1772,10 +1958,10 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len if (desc_list_len < 0) break; desc_list_len &= 0xfff; - desc_list_end = p + desc_list_len; + desc_list_end = p + desc_list_len; if (desc_list_end > p_end) break; - for(;;) { + for (;;) { desc_tag = get8(&p, desc_list_end); if (desc_tag < 0) break; @@ -1785,9 +1971,9 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len break; av_dlog(ts->stream, "tag: 0x%02x len=%d\n", - desc_tag, desc_len); + desc_tag, desc_len); - switch(desc_tag) { + switch (desc_tag) { case 0x48: service_type = get8(&p, p_end); if (service_type < 0) @@ -1798,9 +1984,10 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len name = getstr8(&p, p_end); if (name) { AVProgram *program = av_new_program(ts->stream, sid); - if(program) { + if (program) { av_dict_set(&program->metadata, "service_name", name, 0); - av_dict_set(&program->metadata, "service_provider", provider_name, 0); + av_dict_set(&program->metadata, "service_provider", + provider_name, 0); } } av_free(name); @@ -1829,7 +2016,7 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet) int64_t pos; pid = AV_RB16(packet + 1) & 0x1fff; - if(pid && discard_pid(ts, pid)) + if (pid && discard_pid(ts, pid)) return 0; is_start = packet[1] & 0x40; tss = ts->pids[pid]; @@ -1844,32 +2031,32 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet) afc = (packet[3] >> 4) & 3; if (afc == 0) /* reserved value */ return 0; - has_adaptation = afc & 2; - has_payload = afc & 1; - is_discontinuity = has_adaptation - && packet[4] != 0 /* with length > 0 */ - && (packet[5] & 0x80); /* and discontinuity indicated */ + has_adaptation = afc & 2; + has_payload = afc & 1; + is_discontinuity = has_adaptation && + packet[4] != 0 && /* with length > 0 */ + (packet[5] & 0x80); /* and discontinuity indicated */ /* continuity check (currently not used) */ cc = (packet[3] & 0xf); expected_cc = has_payload ? (tss->last_cc + 1) & 0x0f : tss->last_cc; - cc_ok = pid == 0x1FFF // null packet PID - || is_discontinuity - || tss->last_cc < 0 - || expected_cc == cc; + cc_ok = pid == 0x1FFF || // null packet PID + is_discontinuity || + tss->last_cc < 0 || + expected_cc == cc; tss->last_cc = cc; if (!cc_ok) { av_log(ts->stream, AV_LOG_DEBUG, "Continuity check failed for pid %d expected %d got %d\n", pid, expected_cc, cc); - if(tss->type == MPEGTS_PES) { + if (tss->type == MPEGTS_PES) { PESContext *pc = tss->u.pes_filter.opaque; pc->flags |= AV_PKT_FLAG_CORRUPT; } } - if (!has_payload) + if (!has_payload && tss->type != MPEGTS_PCR) return 0; p = packet + 4; if (has_adaptation) { @@ -1878,7 +2065,7 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet) } /* if past the end of packet, ignore */ p_end = packet + TS_PACKET_SIZE; - if (p >= p_end) + if (p > p_end || (p == p_end && tss->type != MPEGTS_PCR)) return 0; pos = avio_tell(ts->stream->pb); @@ -1912,17 +2099,35 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet) p, p_end - p, 0); } } + + // stop find_stream_info from waiting for more streams + // when all programs have received a PMT + if (ts->stream->ctx_flags & AVFMTCTX_NOHEADER) { + int i; + for (i = 0; i < ts->nb_prg; i++) { + if (!ts->prg[i].pmt_found) + break; + } + if (i == ts->nb_prg && ts->nb_prg > 0) { + if (ts->stream->nb_streams > 1 || pos > 100000) { + av_log(ts->stream, AV_LOG_DEBUG, "All programs have pmt, headers found\n"); + ts->stream->ctx_flags &= ~AVFMTCTX_NOHEADER; + } + } + } + } else { int ret; - int64_t pcr = -1; int64_t pcr_h; int pcr_l; if (parse_pcr(&pcr_h, &pcr_l, packet) == 0) - pcr = pcr_h * 300 + pcr_l; + tss->last_pcr = pcr_h * 300 + pcr_l; // Note: The position here points actually behind the current packet. - if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start, - pos - ts->raw_packet_size, pcr)) < 0) - return ret; + if (tss->type == MPEGTS_PES) { + if ((ret = tss->u.pes_filter.pes_cb(tss, p, p_end - p, is_start, + pos - ts->raw_packet_size)) < 0) + return ret; + } } return 0; @@ -1931,7 +2136,7 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet) static void reanalyze(MpegTSContext *ts) { AVIOContext *pb = ts->stream->pb; int64_t pos = avio_tell(pb); - if(pos < 0) + if (pos < 0) return; pos -= ts->pos47_full; if (pos == TS_PACKET_SIZE) { @@ -1943,7 +2148,7 @@ static void reanalyze(MpegTSContext *ts) { } ts->size_stat_count ++; - if(ts->size_stat_count > SIZE_STAT_THRESHOLD) { + if (ts->size_stat_count > SIZE_STAT_THRESHOLD) { int newsize = 0; if (ts->size_stat[0] > SIZE_STAT_THRESHOLD) { newsize = TS_PACKET_SIZE; @@ -1962,34 +2167,36 @@ static void reanalyze(MpegTSContext *ts) { } /* XXX: try to find a better synchro over several packets (use - get_packet_size() ?) */ + * get_packet_size() ?) */ static int mpegts_resync(AVFormatContext *s) { AVIOContext *pb = s->pb; int c, i; - for(i = 0;i < MAX_RESYNC_SIZE; i++) { + for (i = 0; i < MAX_RESYNC_SIZE; i++) { c = avio_r8(pb); if (url_feof(pb)) - return -1; + return AVERROR_EOF; if (c == 0x47) { avio_seek(pb, -1, SEEK_CUR); reanalyze(s->priv_data); return 0; } } - av_log(s, AV_LOG_ERROR, "max resync size reached, could not find sync byte\n"); + av_log(s, AV_LOG_ERROR, + "max resync size reached, could not find sync byte\n"); /* no sync found */ - return -1; + return AVERROR_INVALIDDATA; } -/* return -1 if error or EOF. Return 0 if OK. */ -static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size, const uint8_t **data) +/* return AVERROR_something if error or EOF. Return 0 if OK. */ +static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size, + const uint8_t **data) { AVIOContext *pb = s->pb; int len; - for(;;) { + for (;;) { len = ffio_read_indirect(pb, buf, TS_PACKET_SIZE, data); if (len != TS_PACKET_SIZE) return len < 0 ? len : AVERROR_EOF; @@ -2032,13 +2239,13 @@ static int handle_packets(MpegTSContext *ts, int nb_packets) for (i = 0; i < NB_PID_MAX; i++) { if (ts->pids[i]) { if (ts->pids[i]->type == MPEGTS_PES) { - PESContext *pes = ts->pids[i]->u.pes_filter.opaque; - av_buffer_unref(&pes->buffer); - pes->data_index = 0; - pes->state = MPEGTS_SKIP; /* skip until pes header */ - pes->last_pcr = -1; + PESContext *pes = ts->pids[i]->u.pes_filter.opaque; + av_buffer_unref(&pes->buffer); + pes->data_index = 0; + pes->state = MPEGTS_SKIP; /* skip until pes header */ } ts->pids[i]->last_cc = -1; + ts->pids[i]->last_pcr = -1; } } } @@ -2046,7 +2253,7 @@ static int handle_packets(MpegTSContext *ts, int nb_packets) ts->stop_parse = 0; packet_num = 0; memset(packet + TS_PACKET_SIZE, 0, FF_INPUT_BUFFER_PADDING_SIZE); - for(;;) { + for (;;) { packet_num++; if (nb_packets != 0 && packet_num >= nb_packets || ts->stop_parse > 1) { @@ -2070,41 +2277,41 @@ static int handle_packets(MpegTSContext *ts, int nb_packets) static int mpegts_probe(AVProbeData *p) { - const int size= p->buf_size; - int maxscore=0; - int sumscore=0; + const int size = p->buf_size; + int maxscore = 0; + int sumscore = 0; int i; - int check_count= size / TS_FEC_PACKET_SIZE; + int check_count = size / TS_FEC_PACKET_SIZE; #define CHECK_COUNT 10 #define CHECK_BLOCK 100 if (check_count < CHECK_COUNT) - return -1; + return AVERROR_INVALIDDATA; - for (i=0; i<check_count; i+=CHECK_BLOCK){ + for (i = 0; i<check_count; i+=CHECK_BLOCK) { int left = FFMIN(check_count - i, CHECK_BLOCK); - int score = analyze(p->buf + TS_PACKET_SIZE *i, TS_PACKET_SIZE *left, TS_PACKET_SIZE , NULL); - int dvhs_score= analyze(p->buf + TS_DVHS_PACKET_SIZE*i, TS_DVHS_PACKET_SIZE*left, TS_DVHS_PACKET_SIZE, NULL); - int fec_score = analyze(p->buf + TS_FEC_PACKET_SIZE *i, TS_FEC_PACKET_SIZE *left, TS_FEC_PACKET_SIZE , NULL); + int score = analyze(p->buf + TS_PACKET_SIZE *i, TS_PACKET_SIZE *left, TS_PACKET_SIZE , NULL); + int dvhs_score = analyze(p->buf + TS_DVHS_PACKET_SIZE*i, TS_DVHS_PACKET_SIZE*left, TS_DVHS_PACKET_SIZE, NULL); + int fec_score = analyze(p->buf + TS_FEC_PACKET_SIZE *i, TS_FEC_PACKET_SIZE *left, TS_FEC_PACKET_SIZE , NULL); score = FFMAX3(score, dvhs_score, fec_score); sumscore += score; maxscore = FFMAX(maxscore, score); } - sumscore = sumscore*CHECK_COUNT/check_count; - maxscore = maxscore*CHECK_COUNT/CHECK_BLOCK; + sumscore = sumscore * CHECK_COUNT / check_count; + maxscore = maxscore * CHECK_COUNT / CHECK_BLOCK; av_dlog(0, "TS score: %d %d\n", sumscore, maxscore); - if (sumscore > 6) return AVPROBE_SCORE_MAX + sumscore - CHECK_COUNT; - else if (maxscore > 6) return AVPROBE_SCORE_MAX/2 + sumscore - CHECK_COUNT; - else return -1; + if (sumscore > 6) return AVPROBE_SCORE_MAX + sumscore - CHECK_COUNT; + else if (maxscore > 6) return AVPROBE_SCORE_MAX/2 + sumscore - CHECK_COUNT; + else + return AVERROR_INVALIDDATA; } /* return the 90kHz PCR and the extension for the 27MHz PCR. return - (-1) if not available */ -static int parse_pcr(int64_t *ppcr_high, int *ppcr_low, - const uint8_t *packet) + * (-1) if not available */ +static int parse_pcr(int64_t *ppcr_high, int *ppcr_low, const uint8_t *packet) { int afc, len, flags; const uint8_t *p; @@ -2112,21 +2319,21 @@ static int parse_pcr(int64_t *ppcr_high, int *ppcr_low, afc = (packet[3] >> 4) & 3; if (afc <= 1) - return -1; - p = packet + 4; + return AVERROR_INVALIDDATA; + p = packet + 4; len = p[0]; p++; if (len == 0) - return -1; + return AVERROR_INVALIDDATA; flags = *p++; len--; if (!(flags & 0x10)) - return -1; + return AVERROR_INVALIDDATA; if (len < 6) - return -1; - v = AV_RB32(p); - *ppcr_high = ((int64_t)v << 1) | (p[4] >> 7); - *ppcr_low = ((p[4] & 1) << 8) | p[5]; + return AVERROR_INVALIDDATA; + v = AV_RB32(p); + *ppcr_high = ((int64_t) v << 1) | (p[4] >> 7); + *ppcr_low = ((p[4] & 1) << 8) | p[5]; return 0; } @@ -2142,8 +2349,8 @@ static void seek_back(AVFormatContext *s, AVIOContext *pb, int64_t pos) { static int mpegts_read_header(AVFormatContext *s) { MpegTSContext *ts = s->priv_data; - AVIOContext *pb = s->pb; - uint8_t buf[8*1024]={0}; + AVIOContext *pb = s->pb; + uint8_t buf[8 * 1024] = {0}; int len; int64_t pos; @@ -2157,7 +2364,7 @@ static int mpegts_read_header(AVFormatContext *s) av_log(s, AV_LOG_WARNING, "Could not detect TS packet size, defaulting to non-FEC/DVHS\n"); ts->raw_packet_size = TS_PACKET_SIZE; } - ts->stream = s; + ts->stream = s; ts->auto_guess = 0; if (s->iformat == &ff_mpegts_demuxer) { @@ -2190,19 +2397,19 @@ static int mpegts_read_header(AVFormatContext *s) st = avformat_new_stream(s, NULL); if (!st) - goto fail; + return AVERROR(ENOMEM); avpriv_set_pts_info(st, 60, 1, 27000000); st->codec->codec_type = AVMEDIA_TYPE_DATA; - st->codec->codec_id = AV_CODEC_ID_MPEG2TS; + st->codec->codec_id = AV_CODEC_ID_MPEG2TS; /* we iterate until we find two PCRs to estimate the bitrate */ - pcr_pid = -1; - nb_pcrs = 0; + pcr_pid = -1; + nb_pcrs = 0; nb_packets = 0; - for(;;) { + for (;;) { ret = read_packet(s, packet, ts->raw_packet_size, &data); if (ret < 0) - goto fail; + return ret; pid = AV_RB16(data + 1) & 0x1fff; if ((pcr_pid == -1 || pcr_pid == pid) && parse_pcr(&pcr_h, &pcr_l, data) == 0) { @@ -2222,24 +2429,21 @@ static int mpegts_read_header(AVFormatContext *s) /* NOTE1: the bitrate is computed without the FEC */ /* NOTE2: it is only the bitrate of the start of the stream */ ts->pcr_incr = (pcrs[1] - pcrs[0]) / (packet_count[1] - packet_count[0]); - ts->cur_pcr = pcrs[0] - ts->pcr_incr * packet_count[0]; - s->bit_rate = (TS_PACKET_SIZE * 8) * 27e6 / ts->pcr_incr; + ts->cur_pcr = pcrs[0] - ts->pcr_incr * packet_count[0]; + s->bit_rate = TS_PACKET_SIZE * 8 * 27e6 / ts->pcr_incr; st->codec->bit_rate = s->bit_rate; - st->start_time = ts->cur_pcr; + st->start_time = ts->cur_pcr; av_dlog(ts->stream, "start=%0.3f pcr=%0.3f incr=%d\n", st->start_time / 1000000.0, pcrs[0] / 27e6, ts->pcr_incr); } seek_back(s, pb, pos); return 0; - fail: - return -1; } #define MAX_PACKET_READAHEAD ((128 * 1024) / 188) -static int mpegts_raw_read_packet(AVFormatContext *s, - AVPacket *pkt) +static int mpegts_raw_read_packet(AVFormatContext *s, AVPacket *pkt) { MpegTSContext *ts = s->priv_data; int ret, i; @@ -2250,8 +2454,8 @@ static int mpegts_raw_read_packet(AVFormatContext *s, if (av_new_packet(pkt, TS_PACKET_SIZE) < 0) return AVERROR(ENOMEM); - pkt->pos= avio_tell(s->pb); ret = read_packet(s, pkt->data, ts->raw_packet_size, &data); + pkt->pos = avio_tell(s->pb); if (ret < 0) { av_free_packet(pkt); return ret; @@ -2264,12 +2468,13 @@ static int mpegts_raw_read_packet(AVFormatContext *s, if (parse_pcr(&pcr_h, &pcr_l, pkt->data) == 0) { /* we read the next PCR (XXX: optimize it by using a bigger buffer */ pos = avio_tell(s->pb); - for(i = 0; i < MAX_PACKET_READAHEAD; i++) { + for (i = 0; i < MAX_PACKET_READAHEAD; i++) { avio_seek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET); avio_read(s->pb, pcr_buf, 12); if (parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) { /* XXX: not precise enough */ - ts->pcr_incr = ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) / + ts->pcr_incr = + ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) / (i + 1); break; } @@ -2278,16 +2483,15 @@ static int mpegts_raw_read_packet(AVFormatContext *s, /* no next PCR found: we use previous increment */ ts->cur_pcr = pcr_h * 300 + pcr_l; } - pkt->pts = ts->cur_pcr; + pkt->pts = ts->cur_pcr; pkt->duration = ts->pcr_incr; - ts->cur_pcr += ts->pcr_incr; + ts->cur_pcr += ts->pcr_incr; } pkt->stream_index = 0; return 0; } -static int mpegts_read_packet(AVFormatContext *s, - AVPacket *pkt) +static int mpegts_read_packet(AVFormatContext *s, AVPacket *pkt) { MpegTSContext *ts = s->priv_data; int ret, i; @@ -2298,7 +2502,7 @@ static int mpegts_read_packet(AVFormatContext *s, if (ret < 0) { av_free_packet(ts->pkt); /* flush pes data left */ - for (i = 0; i < NB_PID_MAX; i++) { + for (i = 0; i < NB_PID_MAX; i++) if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) { PESContext *pes = ts->pids[i]->u.pes_filter.opaque; if (pes->state == MPEGTS_PAYLOAD && pes->data_index > 0) { @@ -2308,7 +2512,6 @@ static int mpegts_read_packet(AVFormatContext *s, break; } } - } } if (!ret && pkt->size < 0) @@ -2322,8 +2525,9 @@ static void mpegts_free(MpegTSContext *ts) clear_programs(ts); - for(i=0;i<NB_PID_MAX;i++) - if (ts->pids[i]) mpegts_close_filter(ts, ts->pids[i]); + for (i = 0; i < NB_PID_MAX; i++) + if (ts->pids[i]) + mpegts_close_filter(ts, ts->pids[i]); } static int mpegts_read_close(AVFormatContext *s) @@ -2339,9 +2543,12 @@ static av_unused int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index, MpegTSContext *ts = s->priv_data; int64_t pos, timestamp; uint8_t buf[TS_PACKET_SIZE]; - int pcr_l, pcr_pid = ((PESContext*)s->streams[stream_index]->priv_data)->pcr_pid; + int pcr_l, pcr_pid = + ((PESContext *)s->streams[stream_index]->priv_data)->pcr_pid; int pos47 = ts->pos47_full % ts->raw_packet_size; - pos = ((*ppos + ts->raw_packet_size - 1 - pos47) / ts->raw_packet_size) * ts->raw_packet_size + pos47; + pos = + ((*ppos + ts->raw_packet_size - 1 - pos47) / ts->raw_packet_size) * + ts->raw_packet_size + pos47; while(pos < pos_limit) { if (avio_seek(s->pb, pos, SEEK_SET) < 0) return AV_NOPTS_VALUE; @@ -2379,15 +2586,15 @@ static int64_t mpegts_get_dts(AVFormatContext *s, int stream_index, int ret; AVPacket pkt; av_init_packet(&pkt); - ret= av_read_frame(s, &pkt); - if(ret < 0) + ret = av_read_frame(s, &pkt); + if (ret < 0) return AV_NOPTS_VALUE; av_free_packet(&pkt); - if(pkt.dts != AV_NOPTS_VALUE && pkt.pos >= 0){ + if (pkt.dts != AV_NOPTS_VALUE && pkt.pos >= 0) { ff_reduce_index(s, pkt.stream_index); av_add_index_entry(s->streams[pkt.stream_index], pkt.pos, pkt.dts, 0, 0, AVINDEX_KEYFRAME /* FIXME keyframe? */); - if(pkt.stream_index == stream_index && pkt.pos >= *ppos){ - *ppos= pkt.pos; + if (pkt.stream_index == stream_index && pkt.pos >= *ppos) { + *ppos = pkt.pos; return pkt.dts; } } @@ -2418,18 +2625,18 @@ MpegTSContext *ff_mpegts_parse_open(AVFormatContext *s) } /* return the consumed length if a packet was output, or -1 if no - packet is output */ + * packet is output */ int ff_mpegts_parse_packet(MpegTSContext *ts, AVPacket *pkt, - const uint8_t *buf, int len) + const uint8_t *buf, int len) { int len1; len1 = len; ts->pkt = pkt; - for(;;) { + for (;;) { ts->stop_parse = 0; if (len < TS_PACKET_SIZE) - return -1; + return AVERROR_INVALIDDATA; if (buf[0] != 0x47) { buf++; len--; |