| /* |
| * MPEG2 transport stream (aka DVB) muxer |
| * Copyright (c) 2003 Fabrice Bellard |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/bswap.h" |
| #include "libavutil/crc.h" |
| #include "libavutil/dict.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/mathematics.h" |
| #include "libavutil/opt.h" |
| |
| #include "libavcodec/internal.h" |
| |
| #include "avformat.h" |
| #include "avio_internal.h" |
| #include "internal.h" |
| #include "mpegts.h" |
| |
| #define PCR_TIME_BASE 27000000 |
| |
| /* write DVB SI sections */ |
| |
| /*********************************************/ |
| /* mpegts section writer */ |
| |
| typedef struct MpegTSSection { |
| int pid; |
| int cc; |
| void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet); |
| void *opaque; |
| } MpegTSSection; |
| |
| typedef struct MpegTSService { |
| MpegTSSection pmt; /* MPEG2 pmt table context */ |
| int sid; /* service ID */ |
| char *name; |
| char *provider_name; |
| int pcr_pid; |
| int pcr_packet_count; |
| int pcr_packet_period; |
| } MpegTSService; |
| |
| // service_type values as defined in ETSI 300 468 |
| enum { |
| MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01, |
| MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02, |
| MPEGTS_SERVICE_TYPE_TELETEXT = 0x03, |
| MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A, |
| MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11, |
| MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16, |
| MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19 |
| }; |
| typedef struct MpegTSWrite { |
| const AVClass *av_class; |
| MpegTSSection pat; /* MPEG2 pat table */ |
| MpegTSSection sdt; /* MPEG2 sdt table context */ |
| MpegTSService **services; |
| int sdt_packet_count; |
| int sdt_packet_period; |
| int pat_packet_count; |
| int pat_packet_period; |
| int nb_services; |
| int onid; |
| int tsid; |
| int64_t first_pcr; |
| int mux_rate; ///< set to 1 when VBR |
| int pes_payload_size; |
| |
| int transport_stream_id; |
| int original_network_id; |
| int service_id; |
| int service_type; |
| |
| int pmt_start_pid; |
| int start_pid; |
| int m2ts_mode; |
| |
| int reemit_pat_pmt; // backward compatibility |
| |
| int pcr_period; |
| #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01 |
| #define MPEGTS_FLAG_AAC_LATM 0x02 |
| #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04 |
| #define MPEGTS_FLAG_SYSTEM_B 0x08 |
| int flags; |
| int copyts; |
| int tables_version; |
| double pat_period; |
| double sdt_period; |
| int64_t last_pat_ts; |
| int64_t last_sdt_ts; |
| |
| int omit_video_pes_length; |
| } MpegTSWrite; |
| |
| /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */ |
| #define DEFAULT_PES_HEADER_FREQ 16 |
| #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170) |
| |
| /* The section length is 12 bits. The first 2 are set to 0, the remaining |
| * 10 bits should not exceed 1021. */ |
| #define SECTION_LENGTH 1020 |
| |
| /* NOTE: 4 bytes must be left at the end for the crc32 */ |
| static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len) |
| { |
| unsigned int crc; |
| unsigned char packet[TS_PACKET_SIZE]; |
| const unsigned char *buf_ptr; |
| unsigned char *q; |
| int first, b, len1, left; |
| |
| crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE), |
| -1, buf, len - 4)); |
| |
| buf[len - 4] = (crc >> 24) & 0xff; |
| buf[len - 3] = (crc >> 16) & 0xff; |
| buf[len - 2] = (crc >> 8) & 0xff; |
| buf[len - 1] = crc & 0xff; |
| |
| /* send each packet */ |
| buf_ptr = buf; |
| while (len > 0) { |
| first = buf == buf_ptr; |
| q = packet; |
| *q++ = 0x47; |
| b = s->pid >> 8; |
| if (first) |
| b |= 0x40; |
| *q++ = b; |
| *q++ = s->pid; |
| s->cc = s->cc + 1 & 0xf; |
| *q++ = 0x10 | s->cc; |
| if (first) |
| *q++ = 0; /* 0 offset */ |
| len1 = TS_PACKET_SIZE - (q - packet); |
| if (len1 > len) |
| len1 = len; |
| memcpy(q, buf_ptr, len1); |
| q += len1; |
| /* add known padding data */ |
| left = TS_PACKET_SIZE - (q - packet); |
| if (left > 0) |
| memset(q, 0xff, left); |
| |
| s->write_packet(s, packet); |
| |
| buf_ptr += len1; |
| len -= len1; |
| } |
| } |
| |
| static inline void put16(uint8_t **q_ptr, int val) |
| { |
| uint8_t *q; |
| q = *q_ptr; |
| *q++ = val >> 8; |
| *q++ = val; |
| *q_ptr = q; |
| } |
| |
| static int mpegts_write_section1(MpegTSSection *s, int tid, int id, |
| int version, int sec_num, int last_sec_num, |
| uint8_t *buf, int len) |
| { |
| uint8_t section[1024], *q; |
| unsigned int tot_len; |
| /* reserved_future_use field must be set to 1 for SDT */ |
| unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000; |
| |
| tot_len = 3 + 5 + len + 4; |
| /* check if not too big */ |
| if (tot_len > 1024) |
| return AVERROR_INVALIDDATA; |
| |
| q = section; |
| *q++ = tid; |
| put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */ |
| put16(&q, id); |
| *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */ |
| *q++ = sec_num; |
| *q++ = last_sec_num; |
| memcpy(q, buf, len); |
| |
| mpegts_write_section(s, section, tot_len); |
| return 0; |
| } |
| |
| /*********************************************/ |
| /* mpegts writer */ |
| |
| #define DEFAULT_PROVIDER_NAME "FFmpeg" |
| #define DEFAULT_SERVICE_NAME "Service01" |
| |
| /* we retransmit the SI info at this rate */ |
| #define SDT_RETRANS_TIME 500 |
| #define PAT_RETRANS_TIME 100 |
| #define PCR_RETRANS_TIME 20 |
| |
| typedef struct MpegTSWriteStream { |
| struct MpegTSService *service; |
| int pid; /* stream associated pid */ |
| int cc; |
| int payload_size; |
| int first_pts_check; ///< first pts check needed |
| int prev_payload_key; |
| int64_t payload_pts; |
| int64_t payload_dts; |
| int payload_flags; |
| uint8_t *payload; |
| AVFormatContext *amux; |
| AVRational user_tb; |
| |
| /* For Opus */ |
| int opus_queued_samples; |
| int opus_pending_trim_start; |
| } MpegTSWriteStream; |
| |
| static void mpegts_write_pat(AVFormatContext *s) |
| { |
| MpegTSWrite *ts = s->priv_data; |
| MpegTSService *service; |
| uint8_t data[SECTION_LENGTH], *q; |
| int i; |
| |
| q = data; |
| for (i = 0; i < ts->nb_services; i++) { |
| service = ts->services[i]; |
| put16(&q, service->sid); |
| put16(&q, 0xe000 | service->pmt.pid); |
| } |
| mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, ts->tables_version, 0, 0, |
| data, q - data); |
| } |
| |
| static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service) |
| { |
| MpegTSWrite *ts = s->priv_data; |
| uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr; |
| int val, stream_type, i, err = 0; |
| |
| q = data; |
| put16(&q, 0xe000 | service->pcr_pid); |
| |
| program_info_length_ptr = q; |
| q += 2; /* patched after */ |
| |
| /* put program info here */ |
| |
| val = 0xf000 | (q - program_info_length_ptr - 2); |
| program_info_length_ptr[0] = val >> 8; |
| program_info_length_ptr[1] = val; |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVStream *st = s->streams[i]; |
| MpegTSWriteStream *ts_st = st->priv_data; |
| AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0); |
| |
| if (s->nb_programs) { |
| int j, k, found = 0; |
| |
| for (j = 0; j < s->nb_programs; j++) |
| if (s->programs[j]->id == service->sid) { |
| for (k = 0; k < s->programs[j]->nb_stream_indexes; k++) |
| if (s->programs[j]->stream_index[k] == i) { |
| found = 1; |
| break; |
| } |
| break; |
| } |
| |
| if (!found) |
| continue; |
| } |
| |
| if (q - data > SECTION_LENGTH - 32) { |
| err = 1; |
| break; |
| } |
| switch (st->codec->codec_id) { |
| case AV_CODEC_ID_MPEG1VIDEO: |
| case AV_CODEC_ID_MPEG2VIDEO: |
| stream_type = STREAM_TYPE_VIDEO_MPEG2; |
| break; |
| case AV_CODEC_ID_MPEG4: |
| stream_type = STREAM_TYPE_VIDEO_MPEG4; |
| break; |
| case AV_CODEC_ID_H264: |
| stream_type = STREAM_TYPE_VIDEO_H264; |
| break; |
| case AV_CODEC_ID_HEVC: |
| stream_type = STREAM_TYPE_VIDEO_HEVC; |
| break; |
| case AV_CODEC_ID_CAVS: |
| stream_type = STREAM_TYPE_VIDEO_CAVS; |
| break; |
| case AV_CODEC_ID_DIRAC: |
| stream_type = STREAM_TYPE_VIDEO_DIRAC; |
| break; |
| case AV_CODEC_ID_VC1: |
| stream_type = STREAM_TYPE_VIDEO_VC1; |
| break; |
| case AV_CODEC_ID_MP2: |
| case AV_CODEC_ID_MP3: |
| stream_type = STREAM_TYPE_AUDIO_MPEG1; |
| break; |
| case AV_CODEC_ID_AAC: |
| stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM) |
| ? STREAM_TYPE_AUDIO_AAC_LATM |
| : STREAM_TYPE_AUDIO_AAC; |
| break; |
| case AV_CODEC_ID_AAC_LATM: |
| stream_type = STREAM_TYPE_AUDIO_AAC_LATM; |
| break; |
| case AV_CODEC_ID_AC3: |
| stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B) |
| ? STREAM_TYPE_PRIVATE_DATA |
| : STREAM_TYPE_AUDIO_AC3; |
| break; |
| case AV_CODEC_ID_EAC3: |
| stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B) |
| ? STREAM_TYPE_PRIVATE_DATA |
| : STREAM_TYPE_AUDIO_EAC3; |
| break; |
| case AV_CODEC_ID_DTS: |
| stream_type = STREAM_TYPE_AUDIO_DTS; |
| break; |
| case AV_CODEC_ID_TRUEHD: |
| stream_type = STREAM_TYPE_AUDIO_TRUEHD; |
| break; |
| case AV_CODEC_ID_OPUS: |
| stream_type = STREAM_TYPE_PRIVATE_DATA; |
| break; |
| default: |
| stream_type = STREAM_TYPE_PRIVATE_DATA; |
| break; |
| } |
| |
| *q++ = stream_type; |
| put16(&q, 0xe000 | ts_st->pid); |
| desc_length_ptr = q; |
| q += 2; /* patched after */ |
| |
| /* write optional descriptors here */ |
| switch (st->codec->codec_type) { |
| case AVMEDIA_TYPE_AUDIO: |
| if (st->codec->codec_id==AV_CODEC_ID_AC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) { |
| *q++=0x6a; // AC3 descriptor see A038 DVB SI |
| *q++=1; // 1 byte, all flags sets to 0 |
| *q++=0; // omit all fields... |
| } |
| if (st->codec->codec_id==AV_CODEC_ID_EAC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) { |
| *q++=0x7a; // EAC3 descriptor see A038 DVB SI |
| *q++=1; // 1 byte, all flags sets to 0 |
| *q++=0; // omit all fields... |
| } |
| if (st->codec->codec_id==AV_CODEC_ID_S302M) { |
| *q++ = 0x05; /* MPEG-2 registration descriptor*/ |
| *q++ = 4; |
| *q++ = 'B'; |
| *q++ = 'S'; |
| *q++ = 'S'; |
| *q++ = 'D'; |
| } |
| if (st->codec->codec_id==AV_CODEC_ID_OPUS) { |
| /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */ |
| if (q - data > SECTION_LENGTH - 6 - 4) { |
| err = 1; |
| break; |
| } |
| |
| *q++ = 0x05; /* MPEG-2 registration descriptor*/ |
| *q++ = 4; |
| *q++ = 'O'; |
| *q++ = 'p'; |
| *q++ = 'u'; |
| *q++ = 's'; |
| |
| *q++ = 0x7f; /* DVB extension descriptor */ |
| *q++ = 2; |
| *q++ = 0x80; |
| |
| if (st->codec->extradata && st->codec->extradata_size >= 19) { |
| if (st->codec->extradata[18] == 0 && st->codec->channels <= 2) { |
| /* RTP mapping family */ |
| *q++ = st->codec->channels; |
| } else if (st->codec->extradata[18] == 1 && st->codec->channels <= 8 && |
| st->codec->extradata_size >= 21 + st->codec->channels) { |
| static const uint8_t coupled_stream_counts[9] = { |
| 1, 0, 1, 1, 2, 2, 2, 3, 3 |
| }; |
| static const uint8_t channel_map_a[8][8] = { |
| {0}, |
| {0, 1}, |
| {0, 2, 1}, |
| {0, 1, 2, 3}, |
| {0, 4, 1, 2, 3}, |
| {0, 4, 1, 2, 3, 5}, |
| {0, 4, 1, 2, 3, 5, 6}, |
| {0, 6, 1, 2, 3, 4, 5, 7}, |
| }; |
| static const uint8_t channel_map_b[8][8] = { |
| {0}, |
| {0, 1}, |
| {0, 1, 2}, |
| {0, 1, 2, 3}, |
| {0, 1, 2, 3, 4}, |
| {0, 1, 2, 3, 4, 5}, |
| {0, 1, 2, 3, 4, 5, 6}, |
| {0, 1, 2, 3, 4, 5, 6, 7}, |
| }; |
| /* Vorbis mapping family */ |
| |
| if (st->codec->extradata[19] == st->codec->channels - coupled_stream_counts[st->codec->channels] && |
| st->codec->extradata[20] == coupled_stream_counts[st->codec->channels] && |
| memcmp(&st->codec->extradata[21], channel_map_a[st->codec->channels-1], st->codec->channels) == 0) { |
| *q++ = st->codec->channels; |
| } else if (st->codec->channels >= 2 && st->codec->extradata[19] == st->codec->channels && |
| st->codec->extradata[20] == 0 && |
| memcmp(&st->codec->extradata[21], channel_map_b[st->codec->channels-1], st->codec->channels) == 0) { |
| *q++ = st->codec->channels | 0x80; |
| } else { |
| /* Unsupported, could write an extended descriptor here */ |
| av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping"); |
| *q++ = 0xff; |
| } |
| } else { |
| /* Unsupported */ |
| av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codec->extradata[18]); |
| *q++ = 0xff; |
| } |
| } else if (st->codec->channels <= 2) { |
| /* Assume RTP mapping family */ |
| *q++ = st->codec->channels; |
| } else { |
| /* Unsupported */ |
| av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping"); |
| *q++ = 0xff; |
| } |
| } |
| |
| if (lang) { |
| char *p; |
| char *next = lang->value; |
| uint8_t *len_ptr; |
| |
| *q++ = 0x0a; /* ISO 639 language descriptor */ |
| len_ptr = q++; |
| *len_ptr = 0; |
| |
| for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) { |
| if (q - data > SECTION_LENGTH - 4) { |
| err = 1; |
| break; |
| } |
| next = strchr(p, ','); |
| if (strlen(p) != 3 && (!next || next != p + 3)) |
| continue; /* not a 3-letter code */ |
| |
| *q++ = *p++; |
| *q++ = *p++; |
| *q++ = *p++; |
| |
| if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS) |
| *q++ = 0x01; |
| else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) |
| *q++ = 0x02; |
| else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED) |
| *q++ = 0x03; |
| else |
| *q++ = 0; /* undefined type */ |
| |
| *len_ptr += 4; |
| } |
| |
| if (*len_ptr == 0) |
| q -= 2; /* no language codes were written */ |
| } |
| break; |
| case AVMEDIA_TYPE_SUBTITLE: |
| { |
| const char default_language[] = "und"; |
| const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language; |
| |
| if (st->codec->codec_id == AV_CODEC_ID_DVB_SUBTITLE) { |
| uint8_t *len_ptr; |
| int extradata_copied = 0; |
| |
| *q++ = 0x59; /* subtitling_descriptor */ |
| len_ptr = q++; |
| |
| while (strlen(language) >= 3) { |
| if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */ |
| err = 1; |
| break; |
| } |
| *q++ = *language++; |
| *q++ = *language++; |
| *q++ = *language++; |
| /* Skip comma */ |
| if (*language != '\0') |
| language++; |
| |
| if (st->codec->extradata_size - extradata_copied >= 5) { |
| *q++ = st->codec->extradata[extradata_copied + 4]; /* subtitling_type */ |
| memcpy(q, st->codec->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */ |
| extradata_copied += 5; |
| q += 4; |
| } else { |
| /* subtitling_type: |
| * 0x10 - normal with no monitor aspect ratio criticality |
| * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */ |
| *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10; |
| if ((st->codec->extradata_size == 4) && (extradata_copied == 0)) { |
| /* support of old 4-byte extradata format */ |
| memcpy(q, st->codec->extradata, 4); /* composition_page_id and ancillary_page_id */ |
| extradata_copied += 4; |
| q += 4; |
| } else { |
| put16(&q, 1); /* composition_page_id */ |
| put16(&q, 1); /* ancillary_page_id */ |
| } |
| } |
| } |
| |
| *len_ptr = q - len_ptr - 1; |
| } else if (st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) { |
| uint8_t *len_ptr = NULL; |
| int extradata_copied = 0; |
| |
| /* The descriptor tag. teletext_descriptor */ |
| *q++ = 0x56; |
| len_ptr = q++; |
| |
| while (strlen(language) >= 3 && q - data < sizeof(data) - 6) { |
| *q++ = *language++; |
| *q++ = *language++; |
| *q++ = *language++; |
| /* Skip comma */ |
| if (*language != '\0') |
| language++; |
| |
| if (st->codec->extradata_size - 1 > extradata_copied) { |
| memcpy(q, st->codec->extradata + extradata_copied, 2); |
| extradata_copied += 2; |
| q += 2; |
| } else { |
| /* The Teletext descriptor: |
| * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page) |
| * teletext_magazine_number: This is a 3-bit field which identifies the magazine number. |
| * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */ |
| *q++ = 0x08; |
| *q++ = 0x00; |
| } |
| } |
| |
| *len_ptr = q - len_ptr - 1; |
| } |
| } |
| break; |
| case AVMEDIA_TYPE_VIDEO: |
| if (stream_type == STREAM_TYPE_VIDEO_DIRAC) { |
| *q++ = 0x05; /*MPEG-2 registration descriptor*/ |
| *q++ = 4; |
| *q++ = 'd'; |
| *q++ = 'r'; |
| *q++ = 'a'; |
| *q++ = 'c'; |
| } else if (stream_type == STREAM_TYPE_VIDEO_VC1) { |
| *q++ = 0x05; /*MPEG-2 registration descriptor*/ |
| *q++ = 4; |
| *q++ = 'V'; |
| *q++ = 'C'; |
| *q++ = '-'; |
| *q++ = '1'; |
| } |
| break; |
| case AVMEDIA_TYPE_DATA: |
| if (st->codec->codec_id == AV_CODEC_ID_SMPTE_KLV) { |
| *q++ = 0x05; /* MPEG-2 registration descriptor */ |
| *q++ = 4; |
| *q++ = 'K'; |
| *q++ = 'L'; |
| *q++ = 'V'; |
| *q++ = 'A'; |
| } |
| break; |
| } |
| |
| val = 0xf000 | (q - desc_length_ptr - 2); |
| desc_length_ptr[0] = val >> 8; |
| desc_length_ptr[1] = val; |
| } |
| |
| if (err) |
| av_log(s, AV_LOG_ERROR, |
| "The PMT section cannot fit stream %d and all following streams.\n" |
| "Try reducing the number of languages in the audio streams " |
| "or the total number of streams.\n", i); |
| |
| mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0, |
| data, q - data); |
| return 0; |
| } |
| |
| /* NOTE: !str is accepted for an empty string */ |
| static void putstr8(uint8_t **q_ptr, const char *str) |
| { |
| uint8_t *q; |
| int len; |
| |
| q = *q_ptr; |
| if (!str) |
| len = 0; |
| else |
| len = strlen(str); |
| *q++ = len; |
| memcpy(q, str, len); |
| q += len; |
| *q_ptr = q; |
| } |
| |
| static void mpegts_write_sdt(AVFormatContext *s) |
| { |
| MpegTSWrite *ts = s->priv_data; |
| MpegTSService *service; |
| uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr; |
| int i, running_status, free_ca_mode, val; |
| |
| q = data; |
| put16(&q, ts->onid); |
| *q++ = 0xff; |
| for (i = 0; i < ts->nb_services; i++) { |
| service = ts->services[i]; |
| put16(&q, service->sid); |
| *q++ = 0xfc | 0x00; /* currently no EIT info */ |
| desc_list_len_ptr = q; |
| q += 2; |
| running_status = 4; /* running */ |
| free_ca_mode = 0; |
| |
| /* write only one descriptor for the service name and provider */ |
| *q++ = 0x48; |
| desc_len_ptr = q; |
| q++; |
| *q++ = ts->service_type; |
| putstr8(&q, service->provider_name); |
| putstr8(&q, service->name); |
| desc_len_ptr[0] = q - desc_len_ptr - 1; |
| |
| /* fill descriptor length */ |
| val = (running_status << 13) | (free_ca_mode << 12) | |
| (q - desc_list_len_ptr - 2); |
| desc_list_len_ptr[0] = val >> 8; |
| desc_list_len_ptr[1] = val; |
| } |
| mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, ts->tables_version, 0, 0, |
| data, q - data); |
| } |
| |
| static MpegTSService *mpegts_add_service(MpegTSWrite *ts, int sid, |
| const char *provider_name, |
| const char *name) |
| { |
| MpegTSService *service; |
| |
| service = av_mallocz(sizeof(MpegTSService)); |
| if (!service) |
| return NULL; |
| service->pmt.pid = ts->pmt_start_pid + ts->nb_services; |
| service->sid = sid; |
| service->pcr_pid = 0x1fff; |
| service->provider_name = av_strdup(provider_name); |
| service->name = av_strdup(name); |
| if (!service->provider_name || !service->name) |
| goto fail; |
| if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0) |
| goto fail; |
| |
| return service; |
| fail: |
| av_freep(&service->provider_name); |
| av_freep(&service->name); |
| av_free(service); |
| return NULL; |
| } |
| |
| static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb) |
| { |
| return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) + |
| ts->first_pcr; |
| } |
| |
| static void mpegts_prefix_m2ts_header(AVFormatContext *s) |
| { |
| MpegTSWrite *ts = s->priv_data; |
| if (ts->m2ts_mode) { |
| int64_t pcr = get_pcr(s->priv_data, s->pb); |
| uint32_t tp_extra_header = pcr % 0x3fffffff; |
| tp_extra_header = AV_RB32(&tp_extra_header); |
| avio_write(s->pb, (unsigned char *) &tp_extra_header, |
| sizeof(tp_extra_header)); |
| } |
| } |
| |
| static void section_write_packet(MpegTSSection *s, const uint8_t *packet) |
| { |
| AVFormatContext *ctx = s->opaque; |
| mpegts_prefix_m2ts_header(ctx); |
| avio_write(ctx->pb, packet, TS_PACKET_SIZE); |
| } |
| |
| static int mpegts_init(AVFormatContext *s) |
| { |
| MpegTSWrite *ts = s->priv_data; |
| MpegTSWriteStream *ts_st; |
| MpegTSService *service; |
| AVStream *st, *pcr_st = NULL; |
| AVDictionaryEntry *title, *provider; |
| int i, j; |
| const char *service_name; |
| const char *provider_name; |
| int *pids; |
| int ret; |
| |
| if (s->max_delay < 0) /* Not set by the caller */ |
| s->max_delay = 0; |
| |
| // round up to a whole number of TS packets |
| ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14; |
| |
| ts->tsid = ts->transport_stream_id; |
| ts->onid = ts->original_network_id; |
| if (!s->nb_programs) { |
| /* allocate a single DVB service */ |
| title = av_dict_get(s->metadata, "service_name", NULL, 0); |
| if (!title) |
| title = av_dict_get(s->metadata, "title", NULL, 0); |
| service_name = title ? title->value : DEFAULT_SERVICE_NAME; |
| provider = av_dict_get(s->metadata, "service_provider", NULL, 0); |
| provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME; |
| service = mpegts_add_service(ts, ts->service_id, |
| provider_name, service_name); |
| |
| if (!service) |
| return AVERROR(ENOMEM); |
| |
| service->pmt.write_packet = section_write_packet; |
| service->pmt.opaque = s; |
| service->pmt.cc = 15; |
| } else { |
| for (i = 0; i < s->nb_programs; i++) { |
| AVProgram *program = s->programs[i]; |
| title = av_dict_get(program->metadata, "service_name", NULL, 0); |
| if (!title) |
| title = av_dict_get(program->metadata, "title", NULL, 0); |
| service_name = title ? title->value : DEFAULT_SERVICE_NAME; |
| provider = av_dict_get(program->metadata, "service_provider", NULL, 0); |
| provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME; |
| service = mpegts_add_service(ts, program->id, |
| provider_name, service_name); |
| |
| if (!service) |
| return AVERROR(ENOMEM); |
| |
| service->pmt.write_packet = section_write_packet; |
| service->pmt.opaque = s; |
| service->pmt.cc = 15; |
| } |
| } |
| |
| ts->pat.pid = PAT_PID; |
| /* Initialize at 15 so that it wraps and is equal to 0 for the |
| * first packet we write. */ |
| ts->pat.cc = 15; |
| ts->pat.write_packet = section_write_packet; |
| ts->pat.opaque = s; |
| |
| ts->sdt.pid = SDT_PID; |
| ts->sdt.cc = 15; |
| ts->sdt.write_packet = section_write_packet; |
| ts->sdt.opaque = s; |
| |
| pids = av_malloc_array(s->nb_streams, sizeof(*pids)); |
| if (!pids) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| /* assign pids to each stream */ |
| for (i = 0; i < s->nb_streams; i++) { |
| st = s->streams[i]; |
| |
| ts_st = av_mallocz(sizeof(MpegTSWriteStream)); |
| if (!ts_st) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| st->priv_data = ts_st; |
| |
| ts_st->user_tb = st->time_base; |
| avpriv_set_pts_info(st, 33, 1, 90000); |
| |
| ts_st->payload = av_mallocz(ts->pes_payload_size); |
| if (!ts_st->payload) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| ts_st->service = service; |
| /* MPEG pid values < 16 are reserved. Applications which set st->id in |
| * this range are assigned a calculated pid. */ |
| if (st->id < 16) { |
| ts_st->pid = ts->start_pid + i; |
| } else if (st->id < 0x1FFF) { |
| ts_st->pid = st->id; |
| } else { |
| av_log(s, AV_LOG_ERROR, |
| "Invalid stream id %d, must be less than 8191\n", st->id); |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| if (ts_st->pid == service->pmt.pid) { |
| av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid); |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| for (j = 0; j < i; j++) { |
| if (pids[j] == ts_st->pid) { |
| av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid); |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| } |
| pids[i] = ts_st->pid; |
| ts_st->payload_pts = AV_NOPTS_VALUE; |
| ts_st->payload_dts = AV_NOPTS_VALUE; |
| ts_st->first_pts_check = 1; |
| ts_st->cc = 15; |
| /* update PCR pid by using the first video stream */ |
| if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && |
| service->pcr_pid == 0x1fff) { |
| service->pcr_pid = ts_st->pid; |
| pcr_st = st; |
| } |
| if (st->codec->codec_id == AV_CODEC_ID_AAC && |
| st->codec->extradata_size > 0) { |
| AVStream *ast; |
| ts_st->amux = avformat_alloc_context(); |
| if (!ts_st->amux) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| ts_st->amux->oformat = |
| av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts", |
| NULL, NULL); |
| if (!ts_st->amux->oformat) { |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| if (!(ast = avformat_new_stream(ts_st->amux, NULL))) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| ret = avcodec_copy_context(ast->codec, st->codec); |
| if (ret != 0) |
| goto fail; |
| ast->time_base = st->time_base; |
| ret = avformat_write_header(ts_st->amux, NULL); |
| if (ret < 0) |
| goto fail; |
| } |
| if (st->codec->codec_id == AV_CODEC_ID_OPUS) { |
| ts_st->opus_pending_trim_start = st->codec->initial_padding * 48000 / st->codec->sample_rate; |
| } |
| } |
| |
| av_freep(&pids); |
| |
| /* if no video stream, use the first stream as PCR */ |
| if (service->pcr_pid == 0x1fff && s->nb_streams > 0) { |
| pcr_st = s->streams[0]; |
| ts_st = pcr_st->priv_data; |
| service->pcr_pid = ts_st->pid; |
| } else |
| ts_st = pcr_st->priv_data; |
| |
| if (ts->mux_rate > 1) { |
| service->pcr_packet_period = (int64_t)ts->mux_rate * ts->pcr_period / |
| (TS_PACKET_SIZE * 8 * 1000); |
| ts->sdt_packet_period = (int64_t)ts->mux_rate * SDT_RETRANS_TIME / |
| (TS_PACKET_SIZE * 8 * 1000); |
| ts->pat_packet_period = (int64_t)ts->mux_rate * PAT_RETRANS_TIME / |
| (TS_PACKET_SIZE * 8 * 1000); |
| |
| if (ts->copyts < 1) |
| ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE); |
| } else { |
| /* Arbitrary values, PAT/PMT will also be written on video key frames */ |
| ts->sdt_packet_period = 200; |
| ts->pat_packet_period = 40; |
| if (pcr_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
| if (!pcr_st->codec->frame_size) { |
| av_log(s, AV_LOG_WARNING, "frame size not set\n"); |
| service->pcr_packet_period = |
| pcr_st->codec->sample_rate / (10 * 512); |
| } else { |
| service->pcr_packet_period = |
| pcr_st->codec->sample_rate / (10 * pcr_st->codec->frame_size); |
| } |
| } else { |
| // max delta PCR 0.1s |
| // TODO: should be avg_frame_rate |
| service->pcr_packet_period = |
| ts_st->user_tb.den / (10 * ts_st->user_tb.num); |
| } |
| if (!service->pcr_packet_period) |
| service->pcr_packet_period = 1; |
| } |
| |
| ts->last_pat_ts = AV_NOPTS_VALUE; |
| ts->last_sdt_ts = AV_NOPTS_VALUE; |
| // The user specified a period, use only it |
| if (ts->pat_period < INT_MAX/2) { |
| ts->pat_packet_period = INT_MAX; |
| } |
| if (ts->sdt_period < INT_MAX/2) { |
| ts->sdt_packet_period = INT_MAX; |
| } |
| |
| // output a PCR as soon as possible |
| service->pcr_packet_count = service->pcr_packet_period; |
| ts->pat_packet_count = ts->pat_packet_period - 1; |
| ts->sdt_packet_count = ts->sdt_packet_period - 1; |
| |
| if (ts->mux_rate == 1) |
| av_log(s, AV_LOG_VERBOSE, "muxrate VBR, "); |
| else |
| av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate); |
| av_log(s, AV_LOG_VERBOSE, |
| "pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n", |
| service->pcr_packet_period, |
| ts->sdt_packet_period, ts->pat_packet_period); |
| |
| if (ts->m2ts_mode == -1) { |
| if (av_match_ext(s->filename, "m2ts")) { |
| ts->m2ts_mode = 1; |
| } else { |
| ts->m2ts_mode = 0; |
| } |
| } |
| |
| return 0; |
| |
| fail: |
| av_freep(&pids); |
| return ret; |
| } |
| |
| /* send SDT, PAT and PMT tables regulary */ |
| static void retransmit_si_info(AVFormatContext *s, int force_pat, int64_t dts) |
| { |
| MpegTSWrite *ts = s->priv_data; |
| int i; |
| |
| if (++ts->sdt_packet_count == ts->sdt_packet_period || |
| (dts != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) || |
| (dts != AV_NOPTS_VALUE && dts - ts->last_sdt_ts >= ts->sdt_period*90000.0) |
| ) { |
| ts->sdt_packet_count = 0; |
| if (dts != AV_NOPTS_VALUE) |
| ts->last_sdt_ts = FFMAX(dts, ts->last_sdt_ts); |
| mpegts_write_sdt(s); |
| } |
| if (++ts->pat_packet_count == ts->pat_packet_period || |
| (dts != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) || |
| (dts != AV_NOPTS_VALUE && dts - ts->last_pat_ts >= ts->pat_period*90000.0) || |
| force_pat) { |
| ts->pat_packet_count = 0; |
| if (dts != AV_NOPTS_VALUE) |
| ts->last_pat_ts = FFMAX(dts, ts->last_pat_ts); |
| mpegts_write_pat(s); |
| for (i = 0; i < ts->nb_services; i++) |
| mpegts_write_pmt(s, ts->services[i]); |
| } |
| } |
| |
| static int write_pcr_bits(uint8_t *buf, int64_t pcr) |
| { |
| int64_t pcr_low = pcr % 300, pcr_high = pcr / 300; |
| |
| *buf++ = pcr_high >> 25; |
| *buf++ = pcr_high >> 17; |
| *buf++ = pcr_high >> 9; |
| *buf++ = pcr_high >> 1; |
| *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e; |
| *buf++ = pcr_low; |
| |
| return 6; |
| } |
| |
| /* Write a single null transport stream packet */ |
| static void mpegts_insert_null_packet(AVFormatContext *s) |
| { |
| uint8_t *q; |
| uint8_t buf[TS_PACKET_SIZE]; |
| |
| q = buf; |
| *q++ = 0x47; |
| *q++ = 0x00 | 0x1f; |
| *q++ = 0xff; |
| *q++ = 0x10; |
| memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf)); |
| mpegts_prefix_m2ts_header(s); |
| avio_write(s->pb, buf, TS_PACKET_SIZE); |
| } |
| |
| /* Write a single transport stream packet with a PCR and no payload */ |
| static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st) |
| { |
| MpegTSWrite *ts = s->priv_data; |
| MpegTSWriteStream *ts_st = st->priv_data; |
| uint8_t *q; |
| uint8_t buf[TS_PACKET_SIZE]; |
| |
| q = buf; |
| *q++ = 0x47; |
| *q++ = ts_st->pid >> 8; |
| *q++ = ts_st->pid; |
| *q++ = 0x20 | ts_st->cc; /* Adaptation only */ |
| /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */ |
| *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */ |
| *q++ = 0x10; /* Adaptation flags: PCR present */ |
| |
| /* PCR coded into 6 bytes */ |
| q += write_pcr_bits(q, get_pcr(ts, s->pb)); |
| |
| /* stuffing bytes */ |
| memset(q, 0xFF, TS_PACKET_SIZE - (q - buf)); |
| mpegts_prefix_m2ts_header(s); |
| avio_write(s->pb, buf, TS_PACKET_SIZE); |
| } |
| |
| static void write_pts(uint8_t *q, int fourbits, int64_t pts) |
| { |
| int val; |
| |
| val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1; |
| *q++ = val; |
| val = (((pts >> 15) & 0x7fff) << 1) | 1; |
| *q++ = val >> 8; |
| *q++ = val; |
| val = (((pts) & 0x7fff) << 1) | 1; |
| *q++ = val >> 8; |
| *q++ = val; |
| } |
| |
| /* Set an adaptation field flag in an MPEG-TS packet*/ |
| static void set_af_flag(uint8_t *pkt, int flag) |
| { |
| // expect at least one flag to set |
| av_assert0(flag); |
| |
| if ((pkt[3] & 0x20) == 0) { |
| // no AF yet, set adaptation field flag |
| pkt[3] |= 0x20; |
| // 1 byte length, no flags |
| pkt[4] = 1; |
| pkt[5] = 0; |
| } |
| pkt[5] |= flag; |
| } |
| |
| /* Extend the adaptation field by size bytes */ |
| static void extend_af(uint8_t *pkt, int size) |
| { |
| // expect already existing adaptation field |
| av_assert0(pkt[3] & 0x20); |
| pkt[4] += size; |
| } |
| |
| /* Get a pointer to MPEG-TS payload (right after TS packet header) */ |
| static uint8_t *get_ts_payload_start(uint8_t *pkt) |
| { |
| if (pkt[3] & 0x20) |
| return pkt + 5 + pkt[4]; |
| else |
| return pkt + 4; |
| } |
| |
| /* Add a PES header to the front of the payload, and segment into an integer |
| * number of TS packets. The final TS packet is padded using an oversized |
| * adaptation header to exactly fill the last TS packet. |
| * NOTE: 'payload' contains a complete PES payload. */ |
| static void mpegts_write_pes(AVFormatContext *s, AVStream *st, |
| const uint8_t *payload, int payload_size, |
| int64_t pts, int64_t dts, int key) |
| { |
| MpegTSWriteStream *ts_st = st->priv_data; |
| MpegTSWrite *ts = s->priv_data; |
| uint8_t buf[TS_PACKET_SIZE]; |
| uint8_t *q; |
| int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags; |
| int afc_len, stuffing_len; |
| int64_t pcr = -1; /* avoid warning */ |
| int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE); |
| int force_pat = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key; |
| |
| av_assert0(ts_st->payload != buf || st->codec->codec_type != AVMEDIA_TYPE_VIDEO); |
| if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| force_pat = 1; |
| } |
| |
| is_start = 1; |
| while (payload_size > 0) { |
| retransmit_si_info(s, force_pat, dts); |
| force_pat = 0; |
| |
| write_pcr = 0; |
| if (ts_st->pid == ts_st->service->pcr_pid) { |
| if (ts->mux_rate > 1 || is_start) // VBR pcr period is based on frames |
| ts_st->service->pcr_packet_count++; |
| if (ts_st->service->pcr_packet_count >= |
| ts_st->service->pcr_packet_period) { |
| ts_st->service->pcr_packet_count = 0; |
| write_pcr = 1; |
| } |
| } |
| |
| if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE && |
| (dts - get_pcr(ts, s->pb) / 300) > delay) { |
| /* pcr insert gets priority over null packet insert */ |
| if (write_pcr) |
| mpegts_insert_pcr_only(s, st); |
| else |
| mpegts_insert_null_packet(s); |
| /* recalculate write_pcr and possibly retransmit si_info */ |
| continue; |
| } |
| |
| /* prepare packet header */ |
| q = buf; |
| *q++ = 0x47; |
| val = ts_st->pid >> 8; |
| if (is_start) |
| val |= 0x40; |
| *q++ = val; |
| *q++ = ts_st->pid; |
| ts_st->cc = ts_st->cc + 1 & 0xf; |
| *q++ = 0x10 | ts_st->cc; // payload indicator + CC |
| if (key && is_start && pts != AV_NOPTS_VALUE) { |
| // set Random Access for key frames |
| if (ts_st->pid == ts_st->service->pcr_pid) |
| write_pcr = 1; |
| set_af_flag(buf, 0x40); |
| q = get_ts_payload_start(buf); |
| } |
| if (write_pcr) { |
| set_af_flag(buf, 0x10); |
| q = get_ts_payload_start(buf); |
| // add 11, pcr references the last byte of program clock reference base |
| if (ts->mux_rate > 1) |
| pcr = get_pcr(ts, s->pb); |
| else |
| pcr = (dts - delay) * 300; |
| if (dts != AV_NOPTS_VALUE && dts < pcr / 300) |
| av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n"); |
| extend_af(buf, write_pcr_bits(q, pcr)); |
| q = get_ts_payload_start(buf); |
| } |
| if (is_start) { |
| int pes_extension = 0; |
| int pes_header_stuffing_bytes = 0; |
| /* write PES header */ |
| *q++ = 0x00; |
| *q++ = 0x00; |
| *q++ = 0x01; |
| is_dvb_subtitle = 0; |
| is_dvb_teletext = 0; |
| if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| if (st->codec->codec_id == AV_CODEC_ID_DIRAC) |
| *q++ = 0xfd; |
| else |
| *q++ = 0xe0; |
| } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && |
| (st->codec->codec_id == AV_CODEC_ID_MP2 || |
| st->codec->codec_id == AV_CODEC_ID_MP3 || |
| st->codec->codec_id == AV_CODEC_ID_AAC)) { |
| *q++ = 0xc0; |
| } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && |
| st->codec->codec_id == AV_CODEC_ID_AC3 && |
| ts->m2ts_mode) { |
| *q++ = 0xfd; |
| } else { |
| *q++ = 0xbd; |
| if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) { |
| if (st->codec->codec_id == AV_CODEC_ID_DVB_SUBTITLE) { |
| is_dvb_subtitle = 1; |
| } else if (st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) { |
| is_dvb_teletext = 1; |
| } |
| } |
| } |
| header_len = 0; |
| flags = 0; |
| if (pts != AV_NOPTS_VALUE) { |
| header_len += 5; |
| flags |= 0x80; |
| } |
| if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) { |
| header_len += 5; |
| flags |= 0x40; |
| } |
| if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && |
| st->codec->codec_id == AV_CODEC_ID_DIRAC) { |
| /* set PES_extension_flag */ |
| pes_extension = 1; |
| flags |= 0x01; |
| |
| /* One byte for PES2 extension flag + |
| * one byte for extension length + |
| * one byte for extension id */ |
| header_len += 3; |
| } |
| /* for Blu-ray AC3 Audio the PES Extension flag should be as follow |
| * otherwise it will not play sound on blu-ray |
| */ |
| if (ts->m2ts_mode && |
| st->codec->codec_type == AVMEDIA_TYPE_AUDIO && |
| st->codec->codec_id == AV_CODEC_ID_AC3) { |
| /* set PES_extension_flag */ |
| pes_extension = 1; |
| flags |= 0x01; |
| header_len += 3; |
| } |
| if (is_dvb_teletext) { |
| pes_header_stuffing_bytes = 0x24 - header_len; |
| header_len = 0x24; |
| } |
| len = payload_size + header_len + 3; |
| /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */ |
| if (is_dvb_subtitle) { |
| len += 3; |
| payload_size++; |
| } |
| if (len > 0xffff) |
| len = 0; |
| if (ts->omit_video_pes_length && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| len = 0; |
| } |
| *q++ = len >> 8; |
| *q++ = len; |
| val = 0x80; |
| /* data alignment indicator is required for subtitle and data streams */ |
| if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) |
| val |= 0x04; |
| *q++ = val; |
| *q++ = flags; |
| *q++ = header_len; |
| if (pts != AV_NOPTS_VALUE) { |
| write_pts(q, flags >> 6, pts); |
| q += 5; |
| } |
| if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) { |
| write_pts(q, 1, dts); |
| q += 5; |
| } |
| if (pes_extension && st->codec->codec_id == AV_CODEC_ID_DIRAC) { |
| flags = 0x01; /* set PES_extension_flag_2 */ |
| *q++ = flags; |
| *q++ = 0x80 | 0x01; /* marker bit + extension length */ |
| /* Set the stream ID extension flag bit to 0 and |
| * write the extended stream ID. */ |
| *q++ = 0x00 | 0x60; |
| } |
| /* For Blu-ray AC3 Audio Setting extended flags */ |
| if (ts->m2ts_mode && |
| pes_extension && |
| st->codec->codec_id == AV_CODEC_ID_AC3) { |
| flags = 0x01; /* set PES_extension_flag_2 */ |
| *q++ = flags; |
| *q++ = 0x80 | 0x01; /* marker bit + extension length */ |
| *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */ |
| } |
| |
| |
| if (is_dvb_subtitle) { |
| /* First two fields of DVB subtitles PES data: |
| * data_identifier: for DVB subtitle streams shall be coded with the value 0x20 |
| * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */ |
| *q++ = 0x20; |
| *q++ = 0x00; |
| } |
| if (is_dvb_teletext) { |
| memset(q, 0xff, pes_header_stuffing_bytes); |
| q += pes_header_stuffing_bytes; |
| } |
| is_start = 0; |
| } |
| /* header size */ |
| header_len = q - buf; |
| /* data len */ |
| len = TS_PACKET_SIZE - header_len; |
| if (len > payload_size) |
| len = payload_size; |
| stuffing_len = TS_PACKET_SIZE - header_len - len; |
| if (stuffing_len > 0) { |
| /* add stuffing with AFC */ |
| if (buf[3] & 0x20) { |
| /* stuffing already present: increase its size */ |
| afc_len = buf[4] + 1; |
| memmove(buf + 4 + afc_len + stuffing_len, |
| buf + 4 + afc_len, |
| header_len - (4 + afc_len)); |
| buf[4] += stuffing_len; |
| memset(buf + 4 + afc_len, 0xff, stuffing_len); |
| } else { |
| /* add stuffing */ |
| memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4); |
| buf[3] |= 0x20; |
| buf[4] = stuffing_len - 1; |
| if (stuffing_len >= 2) { |
| buf[5] = 0x00; |
| memset(buf + 6, 0xff, stuffing_len - 2); |
| } |
| } |
| } |
| |
| if (is_dvb_subtitle && payload_size == len) { |
| memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1); |
| buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */ |
| } else { |
| memcpy(buf + TS_PACKET_SIZE - len, payload, len); |
| } |
| |
| payload += len; |
| payload_size -= len; |
| mpegts_prefix_m2ts_header(s); |
| avio_write(s->pb, buf, TS_PACKET_SIZE); |
| } |
| ts_st->prev_payload_key = key; |
| } |
| |
| int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt) |
| { |
| if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) { |
| if (!st->nb_frames) { |
| av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, " |
| "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it " |
| "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size); |
| if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data)); |
| av_log(s, AV_LOG_WARNING, "\n"); |
| } |
| return 0; |
| } |
| |
| static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt) |
| { |
| if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) { |
| if (!st->nb_frames) { |
| av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n"); |
| return AVERROR_PATCHWELCOME; |
| } |
| av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size); |
| if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data)); |
| av_log(s, AV_LOG_WARNING, "\n"); |
| } |
| return 0; |
| } |
| |
| /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c |
| * Released under the LGPL v2.1+, written by |
| * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk> |
| */ |
| static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt) |
| { |
| static const int durations[32] = { |
| 480, 960, 1920, 2880, /* Silk NB */ |
| 480, 960, 1920, 2880, /* Silk MB */ |
| 480, 960, 1920, 2880, /* Silk WB */ |
| 480, 960, /* Hybrid SWB */ |
| 480, 960, /* Hybrid FB */ |
| 120, 240, 480, 960, /* CELT NB */ |
| 120, 240, 480, 960, /* CELT NB */ |
| 120, 240, 480, 960, /* CELT NB */ |
| 120, 240, 480, 960, /* CELT NB */ |
| }; |
| int toc, frame_duration, nframes, duration; |
| |
| if (pkt->size < 1) |
| return 0; |
| |
| toc = pkt->data[0]; |
| |
| frame_duration = durations[toc >> 3]; |
| switch (toc & 3) { |
| case 0: |
| nframes = 1; |
| break; |
| case 1: |
| nframes = 2; |
| break; |
| case 2: |
| nframes = 2; |
| break; |
| case 3: |
| if (pkt->size < 2) |
| return 0; |
| nframes = pkt->data[1] & 63; |
| break; |
| } |
| |
| duration = nframes * frame_duration; |
| if (duration > 5760) { |
| av_log(s, AV_LOG_WARNING, |
| "Opus packet duration > 120 ms, invalid"); |
| return 0; |
| } |
| |
| return duration; |
| } |
| |
| static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt) |
| { |
| AVStream *st = s->streams[pkt->stream_index]; |
| int size = pkt->size; |
| uint8_t *buf = pkt->data; |
| uint8_t *data = NULL; |
| MpegTSWrite *ts = s->priv_data; |
| MpegTSWriteStream *ts_st = st->priv_data; |
| const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2; |
| int64_t dts = pkt->dts, pts = pkt->pts; |
| int opus_samples = 0; |
| |
| if (ts->reemit_pat_pmt) { |
| av_log(s, AV_LOG_WARNING, |
| "resend_headers option is deprecated, use -mpegts_flags resend_headers\n"); |
| ts->reemit_pat_pmt = 0; |
| ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT; |
| } |
| |
| if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) { |
| ts->pat_packet_count = ts->pat_packet_period - 1; |
| ts->sdt_packet_count = ts->sdt_packet_period - 1; |
| ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT; |
| } |
| |
| if (ts->copyts < 1) { |
| if (pts != AV_NOPTS_VALUE) |
| pts += delay; |
| if (dts != AV_NOPTS_VALUE) |
| dts += delay; |
| } |
| |
| if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) { |
| av_log(s, AV_LOG_ERROR, "first pts value must be set\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| ts_st->first_pts_check = 0; |
| |
| if (st->codec->codec_id == AV_CODEC_ID_H264) { |
| const uint8_t *p = buf, *buf_end = p + size; |
| uint32_t state = -1; |
| int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codec->extradata_size : 0; |
| int ret = ff_check_h264_startcode(s, st, pkt); |
| if (ret < 0) |
| return ret; |
| |
| if (extradd && AV_RB24(st->codec->extradata) > 1) |
| extradd = 0; |
| |
| do { |
| p = avpriv_find_start_code(p, buf_end, &state); |
| av_log(s, AV_LOG_TRACE, "nal %d\n", state & 0x1f); |
| if ((state & 0x1f) == 7) |
| extradd = 0; |
| } while (p < buf_end && (state & 0x1f) != 9 && |
| (state & 0x1f) != 5 && (state & 0x1f) != 1); |
| |
| if ((state & 0x1f) != 5) |
| extradd = 0; |
| if ((state & 0x1f) != 9) { // AUD NAL |
| data = av_malloc(pkt->size + 6 + extradd); |
| if (!data) |
| return AVERROR(ENOMEM); |
| memcpy(data + 6, st->codec->extradata, extradd); |
| memcpy(data + 6 + extradd, pkt->data, pkt->size); |
| AV_WB32(data, 0x00000001); |
| data[4] = 0x09; |
| data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit |
| buf = data; |
| size = pkt->size + 6 + extradd; |
| } |
| } else if (st->codec->codec_id == AV_CODEC_ID_AAC) { |
| if (pkt->size < 2) { |
| av_log(s, AV_LOG_ERROR, "AAC packet too short\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) { |
| int ret; |
| AVPacket pkt2; |
| |
| if (!ts_st->amux) { |
| av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format " |
| "and extradata missing\n"); |
| } else { |
| av_init_packet(&pkt2); |
| pkt2.data = pkt->data; |
| pkt2.size = pkt->size; |
| av_assert0(pkt->dts != AV_NOPTS_VALUE); |
| pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base); |
| |
| ret = avio_open_dyn_buf(&ts_st->amux->pb); |
| if (ret < 0) |
| return AVERROR(ENOMEM); |
| |
| ret = av_write_frame(ts_st->amux, &pkt2); |
| if (ret < 0) { |
| ffio_free_dyn_buf(&ts_st->amux->pb); |
| return ret; |
| } |
| size = avio_close_dyn_buf(ts_st->amux->pb, &data); |
| ts_st->amux->pb = NULL; |
| buf = data; |
| } |
| } |
| } else if (st->codec->codec_id == AV_CODEC_ID_HEVC) { |
| int ret = check_hevc_startcode(s, st, pkt); |
| if (ret < 0) |
| return ret; |
| } else if (st->codec->codec_id == AV_CODEC_ID_OPUS) { |
| if (pkt->size < 2) { |
| av_log(s, AV_LOG_ERROR, "Opus packet too short\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| /* Add Opus control header */ |
| if ((AV_RB16(pkt->data) >> 5) != 0x3ff) { |
| uint8_t *side_data; |
| int side_data_size; |
| int i, n; |
| int ctrl_header_size; |
| int trim_start = 0, trim_end = 0; |
| |
| opus_samples = opus_get_packet_samples(s, pkt); |
| |
| side_data = av_packet_get_side_data(pkt, |
| AV_PKT_DATA_SKIP_SAMPLES, |
| &side_data_size); |
| |
| if (side_data && side_data_size >= 10) { |
| trim_end = AV_RL32(side_data + 4) * 48000 / st->codec->sample_rate; |
| } |
| |
| ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1; |
| if (ts_st->opus_pending_trim_start) |
| ctrl_header_size += 2; |
| if (trim_end) |
| ctrl_header_size += 2; |
| |
| data = av_malloc(ctrl_header_size); |
| if (!data) |
| return AVERROR(ENOMEM); |
| |
| data[0] = 0x7f; |
| data[1] = 0xe0; |
| if (ts_st->opus_pending_trim_start) |
| data[1] |= 0x10; |
| if (trim_end) |
| data[1] |= 0x08; |
| |
| n = pkt->size; |
| i = 2; |
| do { |
| data[i] = FFMIN(n, 255); |
| n -= 255; |
| i++; |
| } while (n >= 0); |
| |
| av_assert0(2 + pkt->size / 255 + 1 == i); |
| |
| if (ts_st->opus_pending_trim_start) { |
| trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples); |
| AV_WB16(data + i, trim_start); |
| i += 2; |
| ts_st->opus_pending_trim_start -= trim_start; |
| } |
| if (trim_end) { |
| trim_end = FFMIN(trim_end, opus_samples - trim_start); |
| AV_WB16(data + i, trim_end); |
| i += 2; |
| } |
| |
| memcpy(data + i, pkt->data, pkt->size); |
| buf = data; |
| size = ctrl_header_size; |
| } else { |
| /* TODO: Can we get TS formatted data here? If so we will |
| * need to count the samples of that too! */ |
| av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled"); |
| } |
| } |
| |
| if (pkt->dts != AV_NOPTS_VALUE) { |
| int i; |
| for(i=0; i<s->nb_streams; i++) { |
| AVStream *st2 = s->streams[i]; |
| MpegTSWriteStream *ts_st2 = st2->priv_data; |
| if ( ts_st2->payload_size |
| && (ts_st2->payload_dts == AV_NOPTS_VALUE || dts - ts_st2->payload_dts > delay/2)) { |
| mpegts_write_pes(s, st2, ts_st2->payload, ts_st2->payload_size, |
| ts_st2->payload_pts, ts_st2->payload_dts, |
| ts_st2->payload_flags & AV_PKT_FLAG_KEY); |
| ts_st2->payload_size = 0; |
| } |
| } |
| } |
| |
| if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size || |
| (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE && |
| av_compare_ts(dts - ts_st->payload_dts, st->time_base, |
| s->max_delay, AV_TIME_BASE_Q) >= 0) || |
| ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) { |
| mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size, |
| ts_st->payload_pts, ts_st->payload_dts, |
| ts_st->payload_flags & AV_PKT_FLAG_KEY); |
| ts_st->payload_size = 0; |
| ts_st->opus_queued_samples = 0; |
| } |
| |
| if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) { |
| av_assert0(!ts_st->payload_size); |
| // for video and subtitle, write a single pes packet |
| mpegts_write_pes(s, st, buf, size, pts, dts, |
| pkt->flags & AV_PKT_FLAG_KEY); |
| ts_st->opus_queued_samples = 0; |
| av_free(data); |
| return 0; |
| } |
| |
| if (!ts_st->payload_size) { |
| ts_st->payload_pts = pts; |
| ts_st->payload_dts = dts; |
| ts_st->payload_flags = pkt->flags; |
| } |
| |
| memcpy(ts_st->payload + ts_st->payload_size, buf, size); |
| ts_st->payload_size += size; |
| ts_st->opus_queued_samples += opus_samples; |
| |
| av_free(data); |
| |
| return 0; |
| } |
| |
| static void mpegts_write_flush(AVFormatContext *s) |
| { |
| int i; |
| |
| /* flush current packets */ |
| for (i = 0; i < s->nb_streams; i++) { |
| AVStream *st = s->streams[i]; |
| MpegTSWriteStream *ts_st = st->priv_data; |
| if (ts_st->payload_size > 0) { |
| mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size, |
| ts_st->payload_pts, ts_st->payload_dts, |
| ts_st->payload_flags & AV_PKT_FLAG_KEY); |
| ts_st->payload_size = 0; |
| ts_st->opus_queued_samples = 0; |
| } |
| } |
| } |
| |
| static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| if (!pkt) { |
| mpegts_write_flush(s); |
| return 1; |
| } else { |
| return mpegts_write_packet_internal(s, pkt); |
| } |
| } |
| |
| static int mpegts_write_end(AVFormatContext *s) |
| { |
| if (s->pb) |
| mpegts_write_flush(s); |
| |
| return 0; |
| } |
| |
| static void mpegts_deinit(AVFormatContext *s) |
| { |
| MpegTSWrite *ts = s->priv_data; |
| MpegTSService *service; |
| int i; |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| AVStream *st = s->streams[i]; |
| MpegTSWriteStream *ts_st = st->priv_data; |
| if (ts_st) { |
| av_freep(&ts_st->payload); |
| if (ts_st->amux) { |
| avformat_free_context(ts_st->amux); |
| ts_st->amux = NULL; |
| } |
| } |
| } |
| |
| for (i = 0; i < ts->nb_services; i++) { |
| service = ts->services[i]; |
| av_freep(&service->provider_name); |
| av_freep(&service->name); |
| av_freep(&service); |
| } |
| av_freep(&ts->services); |
| } |
| |
| static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt) |
| { |
| int ret = 1; |
| AVStream *st = s->streams[pkt->stream_index]; |
| |
| if (st->codec->codec_id == AV_CODEC_ID_H264) { |
| if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 && |
| AV_RB24(pkt->data) != 0x000001) |
| ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL); |
| } else if (st->codec->codec_id == AV_CODEC_ID_HEVC) { |
| if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 && |
| AV_RB24(pkt->data) != 0x000001) |
| ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL); |
| } |
| |
| return ret; |
| } |
| |
| static const AVOption options[] = { |
| { "mpegts_transport_stream_id", "Set transport_stream_id field.", |
| offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT, |
| { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "mpegts_original_network_id", "Set original_network_id field.", |
| offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT, |
| { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "mpegts_service_id", "Set service_id field.", |
| offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT, |
| { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "mpegts_service_type", "Set service_type field.", |
| offsetof(MpegTSWrite, service_type), AV_OPT_TYPE_INT, |
| { .i64 = 0x01 }, 0x01, 0xff, AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
| { "digital_tv", "Digital Television.", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
| { "digital_radio", "Digital Radio.", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
| { "teletext", "Teletext.", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
| { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
| { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
| { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
| { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" }, |
| { "mpegts_pmt_start_pid", "Set the first pid of the PMT.", |
| offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT, |
| { .i64 = 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "mpegts_start_pid", "Set the first pid.", |
| offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT, |
| { .i64 = 0x0100 }, 0x0020, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "mpegts_m2ts_mode", "Enable m2ts mode.", |
| offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_BOOL, |
| { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "muxrate", NULL, |
| offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT, |
| { .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "pes_payload_size", "Minimum PES packet payload in bytes", |
| offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT, |
| { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "mpegts_flags", "MPEG-TS muxing flags", |
| offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
| { "resend_headers", "Reemit PAT/PMT before writing the next packet", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
| { "latm", "Use LATM packetization for AAC", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
| { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
| { "system_b", "Conform to System B (DVB) instead of System A (ATSC)", |
| 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX, |
| AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, |
| // backward compatibility |
| { "resend_headers", "Reemit PAT/PMT before writing the next packet", |
| offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT, |
| { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "mpegts_copyts", "don't offset dts/pts", |
| offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_BOOL, |
| { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "tables_version", "set PAT, PMT and SDT version", |
| offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT, |
| { .i64 = 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "omit_video_pes_length", "Omit the PES packet length for video packets", |
| offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_BOOL, |
| { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "pcr_period", "PCR retransmission time", |
| offsetof(MpegTSWrite, pcr_period), AV_OPT_TYPE_INT, |
| { .i64 = PCR_RETRANS_TIME }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "pat_period", "PAT/PMT retransmission time limit in seconds", |
| offsetof(MpegTSWrite, pat_period), AV_OPT_TYPE_DOUBLE, |
| { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
| { "sdt_period", "SDT retransmission time limit in seconds", |
| offsetof(MpegTSWrite, sdt_period), AV_OPT_TYPE_DOUBLE, |
| { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
| { NULL }, |
| }; |
| |
| static const AVClass mpegts_muxer_class = { |
| .class_name = "MPEGTS muxer", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| AVOutputFormat ff_mpegts_muxer = { |
| .name = "mpegts", |
| .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"), |
| .mime_type = "video/MP2T", |
| .extensions = "ts,m2t,m2ts,mts", |
| .priv_data_size = sizeof(MpegTSWrite), |
| .audio_codec = AV_CODEC_ID_MP2, |
| .video_codec = AV_CODEC_ID_MPEG2VIDEO, |
| .init = mpegts_init, |
| .write_packet = mpegts_write_packet, |
| .write_trailer = mpegts_write_end, |
| .deinit = mpegts_deinit, |
| .check_bitstream = mpegts_check_bitstream, |
| .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS, |
| .priv_class = &mpegts_muxer_class, |
| }; |
