yading@11: /* yading@11: * MPEG2 transport stream (aka DVB) muxer yading@11: * Copyright (c) 2003 Fabrice Bellard yading@11: * yading@11: * This file is part of FFmpeg. yading@11: * yading@11: * FFmpeg is free software; you can redistribute it and/or yading@11: * modify it under the terms of the GNU Lesser General Public yading@11: * License as published by the Free Software Foundation; either yading@11: * version 2.1 of the License, or (at your option) any later version. yading@11: * yading@11: * FFmpeg is distributed in the hope that it will be useful, yading@11: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@11: * Lesser General Public License for more details. yading@11: * yading@11: * You should have received a copy of the GNU Lesser General Public yading@11: * License along with FFmpeg; if not, write to the Free Software yading@11: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@11: */ yading@11: yading@11: #include "libavutil/bswap.h" yading@11: #include "libavutil/crc.h" yading@11: #include "libavutil/dict.h" yading@11: #include "libavutil/intreadwrite.h" yading@11: #include "libavutil/mathematics.h" yading@11: #include "libavutil/opt.h" yading@11: #include "libavutil/avassert.h" yading@11: #include "libavcodec/internal.h" yading@11: #include "avformat.h" yading@11: #include "internal.h" yading@11: #include "mpegts.h" yading@11: yading@11: #define PCR_TIME_BASE 27000000 yading@11: yading@11: /* write DVB SI sections */ yading@11: yading@11: /*********************************************/ yading@11: /* mpegts section writer */ yading@11: yading@11: typedef struct MpegTSSection { yading@11: int pid; yading@11: int cc; yading@11: void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet); yading@11: void *opaque; yading@11: } MpegTSSection; yading@11: yading@11: typedef struct MpegTSService { yading@11: MpegTSSection pmt; /* MPEG2 pmt table context */ yading@11: int sid; /* service ID */ yading@11: char *name; yading@11: char *provider_name; yading@11: int pcr_pid; yading@11: int pcr_packet_count; yading@11: int pcr_packet_period; yading@11: } MpegTSService; yading@11: yading@11: typedef struct MpegTSWrite { yading@11: const AVClass *av_class; yading@11: MpegTSSection pat; /* MPEG2 pat table */ yading@11: MpegTSSection sdt; /* MPEG2 sdt table context */ yading@11: MpegTSService **services; yading@11: int sdt_packet_count; yading@11: int sdt_packet_period; yading@11: int pat_packet_count; yading@11: int pat_packet_period; yading@11: int nb_services; yading@11: int onid; yading@11: int tsid; yading@11: int64_t first_pcr; yading@11: int mux_rate; ///< set to 1 when VBR yading@11: int pes_payload_size; yading@11: yading@11: int transport_stream_id; yading@11: int original_network_id; yading@11: int service_id; yading@11: yading@11: int pmt_start_pid; yading@11: int start_pid; yading@11: int m2ts_mode; yading@11: yading@11: int reemit_pat_pmt; // backward compatibility yading@11: yading@11: #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01 yading@11: #define MPEGTS_FLAG_AAC_LATM 0x02 yading@11: int flags; yading@11: int copyts; yading@11: } MpegTSWrite; yading@11: yading@11: /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */ yading@11: #define DEFAULT_PES_HEADER_FREQ 16 yading@11: #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170) yading@11: yading@11: static const AVOption options[] = { yading@11: { "mpegts_transport_stream_id", "Set transport_stream_id field.", yading@11: offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { "mpegts_original_network_id", "Set original_network_id field.", yading@11: offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { "mpegts_service_id", "Set service_id field.", yading@11: offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT, {.i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { "mpegts_pmt_start_pid", "Set the first pid of the PMT.", yading@11: offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT, {.i64 = 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { "mpegts_start_pid", "Set the first pid.", yading@11: offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT, {.i64 = 0x0100 }, 0x0100, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: {"mpegts_m2ts_mode", "Enable m2ts mode.", yading@11: offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_INT, {.i64 = -1 }, yading@11: -1,1, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { "muxrate", NULL, offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT, {.i64 = 1}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { "pes_payload_size", "Minimum PES packet payload in bytes", yading@11: offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT, {.i64 = DEFAULT_PES_PAYLOAD_SIZE}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { "mpegts_flags", "MPEG-TS muxing flags", offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, INT_MAX, yading@11: AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" }, yading@11: { "resend_headers", "Reemit PAT/PMT before writing the next packet", yading@11: 0, AV_OPT_TYPE_CONST, {.i64 = MPEGTS_FLAG_REEMIT_PAT_PMT}, 0, INT_MAX, yading@11: AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags"}, yading@11: { "latm", "Use LATM packetization for AAC", yading@11: 0, AV_OPT_TYPE_CONST, {.i64 = MPEGTS_FLAG_AAC_LATM}, 0, INT_MAX, yading@11: AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags"}, yading@11: // backward compatibility yading@11: { "resend_headers", "Reemit PAT/PMT before writing the next packet", yading@11: offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { "mpegts_copyts", "dont offset dts/pts", yading@11: offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_INT, {.i64=-1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM}, yading@11: { NULL }, yading@11: }; yading@11: yading@11: static const AVClass mpegts_muxer_class = { yading@11: .class_name = "MPEGTS muxer", yading@11: .item_name = av_default_item_name, yading@11: .option = options, yading@11: .version = LIBAVUTIL_VERSION_INT, yading@11: }; yading@11: yading@11: /* NOTE: 4 bytes must be left at the end for the crc32 */ yading@11: static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len) yading@11: { yading@11: unsigned int crc; yading@11: unsigned char packet[TS_PACKET_SIZE]; yading@11: const unsigned char *buf_ptr; yading@11: unsigned char *q; yading@11: int first, b, len1, left; yading@11: yading@11: crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1, buf, len - 4)); yading@11: buf[len - 4] = (crc >> 24) & 0xff; yading@11: buf[len - 3] = (crc >> 16) & 0xff; yading@11: buf[len - 2] = (crc >> 8) & 0xff; yading@11: buf[len - 1] = (crc) & 0xff; yading@11: yading@11: /* send each packet */ yading@11: buf_ptr = buf; yading@11: while (len > 0) { yading@11: first = (buf == buf_ptr); yading@11: q = packet; yading@11: *q++ = 0x47; yading@11: b = (s->pid >> 8); yading@11: if (first) yading@11: b |= 0x40; yading@11: *q++ = b; yading@11: *q++ = s->pid; yading@11: s->cc = (s->cc + 1) & 0xf; yading@11: *q++ = 0x10 | s->cc; yading@11: if (first) yading@11: *q++ = 0; /* 0 offset */ yading@11: len1 = TS_PACKET_SIZE - (q - packet); yading@11: if (len1 > len) yading@11: len1 = len; yading@11: memcpy(q, buf_ptr, len1); yading@11: q += len1; yading@11: /* add known padding data */ yading@11: left = TS_PACKET_SIZE - (q - packet); yading@11: if (left > 0) yading@11: memset(q, 0xff, left); yading@11: yading@11: s->write_packet(s, packet); yading@11: yading@11: buf_ptr += len1; yading@11: len -= len1; yading@11: } yading@11: } yading@11: yading@11: static inline void put16(uint8_t **q_ptr, int val) yading@11: { yading@11: uint8_t *q; yading@11: q = *q_ptr; yading@11: *q++ = val >> 8; yading@11: *q++ = val; yading@11: *q_ptr = q; yading@11: } yading@11: yading@11: static int mpegts_write_section1(MpegTSSection *s, int tid, int id, yading@11: int version, int sec_num, int last_sec_num, yading@11: uint8_t *buf, int len) yading@11: { yading@11: uint8_t section[1024], *q; yading@11: unsigned int tot_len; yading@11: /* reserved_future_use field must be set to 1 for SDT */ yading@11: unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000; yading@11: yading@11: tot_len = 3 + 5 + len + 4; yading@11: /* check if not too big */ yading@11: if (tot_len > 1024) yading@11: return AVERROR_INVALIDDATA; yading@11: yading@11: q = section; yading@11: *q++ = tid; yading@11: put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */ yading@11: put16(&q, id); yading@11: *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */ yading@11: *q++ = sec_num; yading@11: *q++ = last_sec_num; yading@11: memcpy(q, buf, len); yading@11: yading@11: mpegts_write_section(s, section, tot_len); yading@11: return 0; yading@11: } yading@11: yading@11: /*********************************************/ yading@11: /* mpegts writer */ yading@11: yading@11: #define DEFAULT_PROVIDER_NAME "FFmpeg" yading@11: #define DEFAULT_SERVICE_NAME "Service01" yading@11: yading@11: /* we retransmit the SI info at this rate */ yading@11: #define SDT_RETRANS_TIME 500 yading@11: #define PAT_RETRANS_TIME 100 yading@11: #define PCR_RETRANS_TIME 20 yading@11: yading@11: typedef struct MpegTSWriteStream { yading@11: struct MpegTSService *service; yading@11: int pid; /* stream associated pid */ yading@11: int cc; yading@11: int payload_size; yading@11: int first_pts_check; ///< first pts check needed yading@11: int prev_payload_key; yading@11: int64_t payload_pts; yading@11: int64_t payload_dts; yading@11: int payload_flags; yading@11: uint8_t *payload; yading@11: AVFormatContext *amux; yading@11: } MpegTSWriteStream; yading@11: yading@11: static void mpegts_write_pat(AVFormatContext *s) yading@11: { yading@11: MpegTSWrite *ts = s->priv_data; yading@11: MpegTSService *service; yading@11: uint8_t data[1012], *q; yading@11: int i; yading@11: yading@11: q = data; yading@11: for(i = 0; i < ts->nb_services; i++) { yading@11: service = ts->services[i]; yading@11: put16(&q, service->sid); yading@11: put16(&q, 0xe000 | service->pmt.pid); yading@11: } yading@11: mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, 0, 0, 0, yading@11: data, q - data); yading@11: } yading@11: yading@11: static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service) yading@11: { yading@11: MpegTSWrite *ts = s->priv_data; yading@11: uint8_t data[1012], *q, *desc_length_ptr, *program_info_length_ptr; yading@11: int val, stream_type, i; yading@11: yading@11: q = data; yading@11: put16(&q, 0xe000 | service->pcr_pid); yading@11: yading@11: program_info_length_ptr = q; yading@11: q += 2; /* patched after */ yading@11: yading@11: /* put program info here */ yading@11: yading@11: val = 0xf000 | (q - program_info_length_ptr - 2); yading@11: program_info_length_ptr[0] = val >> 8; yading@11: program_info_length_ptr[1] = val; yading@11: yading@11: for(i = 0; i < s->nb_streams; i++) { yading@11: AVStream *st = s->streams[i]; yading@11: MpegTSWriteStream *ts_st = st->priv_data; yading@11: AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0); yading@11: switch(st->codec->codec_id) { yading@11: case AV_CODEC_ID_MPEG1VIDEO: yading@11: case AV_CODEC_ID_MPEG2VIDEO: yading@11: stream_type = STREAM_TYPE_VIDEO_MPEG2; yading@11: break; yading@11: case AV_CODEC_ID_MPEG4: yading@11: stream_type = STREAM_TYPE_VIDEO_MPEG4; yading@11: break; yading@11: case AV_CODEC_ID_H264: yading@11: stream_type = STREAM_TYPE_VIDEO_H264; yading@11: break; yading@11: case AV_CODEC_ID_CAVS: yading@11: stream_type = STREAM_TYPE_VIDEO_CAVS; yading@11: break; yading@11: case AV_CODEC_ID_DIRAC: yading@11: stream_type = STREAM_TYPE_VIDEO_DIRAC; yading@11: break; yading@11: case AV_CODEC_ID_MP2: yading@11: case AV_CODEC_ID_MP3: yading@11: stream_type = STREAM_TYPE_AUDIO_MPEG1; yading@11: break; yading@11: case AV_CODEC_ID_AAC: yading@11: stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM) ? STREAM_TYPE_AUDIO_AAC_LATM : STREAM_TYPE_AUDIO_AAC; yading@11: break; yading@11: case AV_CODEC_ID_AAC_LATM: yading@11: stream_type = STREAM_TYPE_AUDIO_AAC_LATM; yading@11: break; yading@11: case AV_CODEC_ID_AC3: yading@11: stream_type = STREAM_TYPE_AUDIO_AC3; yading@11: break; yading@11: default: yading@11: stream_type = STREAM_TYPE_PRIVATE_DATA; yading@11: break; yading@11: } yading@11: *q++ = stream_type; yading@11: put16(&q, 0xe000 | ts_st->pid); yading@11: desc_length_ptr = q; yading@11: q += 2; /* patched after */ yading@11: yading@11: /* write optional descriptors here */ yading@11: switch(st->codec->codec_type) { yading@11: case AVMEDIA_TYPE_AUDIO: yading@11: if(st->codec->codec_id==AV_CODEC_ID_EAC3){ yading@11: *q++=0x7a; // EAC3 descriptor see A038 DVB SI yading@11: *q++=1; // 1 byte, all flags sets to 0 yading@11: *q++=0; // omit all fields... yading@11: } yading@11: if(st->codec->codec_id==AV_CODEC_ID_S302M){ yading@11: *q++ = 0x05; /* MPEG-2 registration descriptor*/ yading@11: *q++ = 4; yading@11: *q++ = 'B'; yading@11: *q++ = 'S'; yading@11: *q++ = 'S'; yading@11: *q++ = 'D'; yading@11: } yading@11: yading@11: if (lang) { yading@11: char *p; yading@11: char *next = lang->value; yading@11: uint8_t *len_ptr; yading@11: yading@11: *q++ = 0x0a; /* ISO 639 language descriptor */ yading@11: len_ptr = q++; yading@11: *len_ptr = 0; yading@11: yading@11: for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) { yading@11: next = strchr(p, ','); yading@11: if (strlen(p) != 3 && (!next || next != p + 3)) yading@11: continue; /* not a 3-letter code */ yading@11: yading@11: *q++ = *p++; yading@11: *q++ = *p++; yading@11: *q++ = *p++; yading@11: yading@11: if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS) yading@11: *q++ = 0x01; yading@11: else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) yading@11: *q++ = 0x02; yading@11: else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED) yading@11: *q++ = 0x03; yading@11: else yading@11: *q++ = 0; /* undefined type */ yading@11: yading@11: *len_ptr += 4; yading@11: } yading@11: yading@11: if (*len_ptr == 0) yading@11: q -= 2; /* no language codes were written */ yading@11: } yading@11: break; yading@11: case AVMEDIA_TYPE_SUBTITLE: yading@11: { yading@11: const char *language; yading@11: language = lang && strlen(lang->value)==3 ? lang->value : "eng"; yading@11: *q++ = 0x59; yading@11: *q++ = 8; yading@11: *q++ = language[0]; yading@11: *q++ = language[1]; yading@11: *q++ = language[2]; yading@11: *q++ = 0x10; /* normal subtitles (0x20 = if hearing pb) */ yading@11: if(st->codec->extradata_size == 4) { yading@11: memcpy(q, st->codec->extradata, 4); yading@11: q += 4; yading@11: } else { yading@11: put16(&q, 1); /* page id */ yading@11: put16(&q, 1); /* ancillary page id */ yading@11: } yading@11: } yading@11: break; yading@11: case AVMEDIA_TYPE_VIDEO: yading@11: if (stream_type == STREAM_TYPE_VIDEO_DIRAC) { yading@11: *q++ = 0x05; /*MPEG-2 registration descriptor*/ yading@11: *q++ = 4; yading@11: *q++ = 'd'; yading@11: *q++ = 'r'; yading@11: *q++ = 'a'; yading@11: *q++ = 'c'; yading@11: } yading@11: break; yading@11: } yading@11: yading@11: val = 0xf000 | (q - desc_length_ptr - 2); yading@11: desc_length_ptr[0] = val >> 8; yading@11: desc_length_ptr[1] = val; yading@11: } yading@11: mpegts_write_section1(&service->pmt, PMT_TID, service->sid, 0, 0, 0, yading@11: data, q - data); yading@11: } yading@11: yading@11: /* NOTE: str == NULL is accepted for an empty string */ yading@11: static void putstr8(uint8_t **q_ptr, const char *str) yading@11: { yading@11: uint8_t *q; yading@11: int len; yading@11: yading@11: q = *q_ptr; yading@11: if (!str) yading@11: len = 0; yading@11: else yading@11: len = strlen(str); yading@11: *q++ = len; yading@11: memcpy(q, str, len); yading@11: q += len; yading@11: *q_ptr = q; yading@11: } yading@11: yading@11: static void mpegts_write_sdt(AVFormatContext *s) yading@11: { yading@11: MpegTSWrite *ts = s->priv_data; yading@11: MpegTSService *service; yading@11: uint8_t data[1012], *q, *desc_list_len_ptr, *desc_len_ptr; yading@11: int i, running_status, free_ca_mode, val; yading@11: yading@11: q = data; yading@11: put16(&q, ts->onid); yading@11: *q++ = 0xff; yading@11: for(i = 0; i < ts->nb_services; i++) { yading@11: service = ts->services[i]; yading@11: put16(&q, service->sid); yading@11: *q++ = 0xfc | 0x00; /* currently no EIT info */ yading@11: desc_list_len_ptr = q; yading@11: q += 2; yading@11: running_status = 4; /* running */ yading@11: free_ca_mode = 0; yading@11: yading@11: /* write only one descriptor for the service name and provider */ yading@11: *q++ = 0x48; yading@11: desc_len_ptr = q; yading@11: q++; yading@11: *q++ = 0x01; /* digital television service */ yading@11: putstr8(&q, service->provider_name); yading@11: putstr8(&q, service->name); yading@11: desc_len_ptr[0] = q - desc_len_ptr - 1; yading@11: yading@11: /* fill descriptor length */ yading@11: val = (running_status << 13) | (free_ca_mode << 12) | yading@11: (q - desc_list_len_ptr - 2); yading@11: desc_list_len_ptr[0] = val >> 8; yading@11: desc_list_len_ptr[1] = val; yading@11: } yading@11: mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, 0, 0, 0, yading@11: data, q - data); yading@11: } yading@11: yading@11: static MpegTSService *mpegts_add_service(MpegTSWrite *ts, yading@11: int sid, yading@11: const char *provider_name, yading@11: const char *name) yading@11: { yading@11: MpegTSService *service; yading@11: yading@11: service = av_mallocz(sizeof(MpegTSService)); yading@11: if (!service) yading@11: return NULL; yading@11: service->pmt.pid = ts->pmt_start_pid + ts->nb_services; yading@11: service->sid = sid; yading@11: service->provider_name = av_strdup(provider_name); yading@11: service->name = av_strdup(name); yading@11: service->pcr_pid = 0x1fff; yading@11: dynarray_add(&ts->services, &ts->nb_services, service); yading@11: return service; yading@11: } yading@11: yading@11: static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb) yading@11: { yading@11: return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) + yading@11: ts->first_pcr; yading@11: } yading@11: yading@11: static void mpegts_prefix_m2ts_header(AVFormatContext *s) yading@11: { yading@11: MpegTSWrite *ts = s->priv_data; yading@11: if (ts->m2ts_mode) { yading@11: int64_t pcr = get_pcr(s->priv_data, s->pb); yading@11: uint32_t tp_extra_header = pcr % 0x3fffffff; yading@11: tp_extra_header = AV_RB32(&tp_extra_header); yading@11: avio_write(s->pb, (unsigned char *) &tp_extra_header, yading@11: sizeof(tp_extra_header)); yading@11: } yading@11: } yading@11: yading@11: static void section_write_packet(MpegTSSection *s, const uint8_t *packet) yading@11: { yading@11: AVFormatContext *ctx = s->opaque; yading@11: mpegts_prefix_m2ts_header(ctx); yading@11: avio_write(ctx->pb, packet, TS_PACKET_SIZE); yading@11: } yading@11: yading@11: static int mpegts_write_header(AVFormatContext *s) yading@11: { yading@11: MpegTSWrite *ts = s->priv_data; yading@11: MpegTSWriteStream *ts_st; yading@11: MpegTSService *service; yading@11: AVStream *st, *pcr_st = NULL; yading@11: AVDictionaryEntry *title, *provider; yading@11: int i, j; yading@11: const char *service_name; yading@11: const char *provider_name; yading@11: int *pids; yading@11: int ret; yading@11: yading@11: if (s->max_delay < 0) /* Not set by the caller */ yading@11: s->max_delay = 0; yading@11: yading@11: // round up to a whole number of TS packets yading@11: ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14; yading@11: yading@11: ts->tsid = ts->transport_stream_id; yading@11: ts->onid = ts->original_network_id; yading@11: /* allocate a single DVB service */ yading@11: title = av_dict_get(s->metadata, "service_name", NULL, 0); yading@11: if (!title) yading@11: title = av_dict_get(s->metadata, "title", NULL, 0); yading@11: service_name = title ? title->value : DEFAULT_SERVICE_NAME; yading@11: provider = av_dict_get(s->metadata, "service_provider", NULL, 0); yading@11: provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME; yading@11: service = mpegts_add_service(ts, ts->service_id, provider_name, service_name); yading@11: service->pmt.write_packet = section_write_packet; yading@11: service->pmt.opaque = s; yading@11: service->pmt.cc = 15; yading@11: yading@11: ts->pat.pid = PAT_PID; yading@11: ts->pat.cc = 15; // Initialize at 15 so that it wraps and be equal to 0 for the first packet we write yading@11: ts->pat.write_packet = section_write_packet; yading@11: ts->pat.opaque = s; yading@11: yading@11: ts->sdt.pid = SDT_PID; yading@11: ts->sdt.cc = 15; yading@11: ts->sdt.write_packet = section_write_packet; yading@11: ts->sdt.opaque = s; yading@11: yading@11: pids = av_malloc(s->nb_streams * sizeof(*pids)); yading@11: if (!pids) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: /* assign pids to each stream */ yading@11: for(i = 0;i < s->nb_streams; i++) { yading@11: st = s->streams[i]; yading@11: avpriv_set_pts_info(st, 33, 1, 90000); yading@11: ts_st = av_mallocz(sizeof(MpegTSWriteStream)); yading@11: if (!ts_st) { yading@11: ret = AVERROR(ENOMEM); yading@11: goto fail; yading@11: } yading@11: st->priv_data = ts_st; yading@11: ts_st->payload = av_mallocz(ts->pes_payload_size); yading@11: if (!ts_st->payload) { yading@11: ret = AVERROR(ENOMEM); yading@11: goto fail; yading@11: } yading@11: ts_st->service = service; yading@11: /* MPEG pid values < 16 are reserved. Applications which set st->id in yading@11: * this range are assigned a calculated pid. */ yading@11: if (st->id < 16) { yading@11: ts_st->pid = ts->start_pid + i; yading@11: } else if (st->id < 0x1FFF) { yading@11: ts_st->pid = st->id; yading@11: } else { yading@11: av_log(s, AV_LOG_ERROR, "Invalid stream id %d, must be less than 8191\n", st->id); yading@11: ret = AVERROR(EINVAL); yading@11: goto fail; yading@11: } yading@11: if (ts_st->pid == service->pmt.pid) { yading@11: av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid); yading@11: ret = AVERROR(EINVAL); yading@11: goto fail; yading@11: } yading@11: for (j = 0; j < i; j++) yading@11: if (pids[j] == ts_st->pid) { yading@11: av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid); yading@11: ret = AVERROR(EINVAL); yading@11: goto fail; yading@11: } yading@11: pids[i] = ts_st->pid; yading@11: ts_st->payload_pts = AV_NOPTS_VALUE; yading@11: ts_st->payload_dts = AV_NOPTS_VALUE; yading@11: ts_st->first_pts_check = 1; yading@11: ts_st->cc = 15; yading@11: /* update PCR pid by using the first video stream */ yading@11: if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && yading@11: service->pcr_pid == 0x1fff) { yading@11: service->pcr_pid = ts_st->pid; yading@11: pcr_st = st; yading@11: } yading@11: if (st->codec->codec_id == AV_CODEC_ID_AAC && yading@11: st->codec->extradata_size > 0) yading@11: { yading@11: AVStream *ast; yading@11: ts_st->amux = avformat_alloc_context(); yading@11: if (!ts_st->amux) { yading@11: ret = AVERROR(ENOMEM); yading@11: goto fail; yading@11: } yading@11: ts_st->amux->oformat = av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts", NULL, NULL); yading@11: if (!ts_st->amux->oformat) { yading@11: ret = AVERROR(EINVAL); yading@11: goto fail; yading@11: } yading@11: ast = avformat_new_stream(ts_st->amux, NULL); yading@11: ret = avcodec_copy_context(ast->codec, st->codec); yading@11: if (ret != 0) yading@11: goto fail; yading@11: ret = avformat_write_header(ts_st->amux, NULL); yading@11: if (ret < 0) yading@11: goto fail; yading@11: } yading@11: } yading@11: yading@11: av_free(pids); yading@11: yading@11: /* if no video stream, use the first stream as PCR */ yading@11: if (service->pcr_pid == 0x1fff && s->nb_streams > 0) { yading@11: pcr_st = s->streams[0]; yading@11: ts_st = pcr_st->priv_data; yading@11: service->pcr_pid = ts_st->pid; yading@11: } yading@11: yading@11: if (ts->mux_rate > 1) { yading@11: service->pcr_packet_period = (ts->mux_rate * PCR_RETRANS_TIME) / yading@11: (TS_PACKET_SIZE * 8 * 1000); yading@11: ts->sdt_packet_period = (ts->mux_rate * SDT_RETRANS_TIME) / yading@11: (TS_PACKET_SIZE * 8 * 1000); yading@11: ts->pat_packet_period = (ts->mux_rate * PAT_RETRANS_TIME) / yading@11: (TS_PACKET_SIZE * 8 * 1000); yading@11: yading@11: if(ts->copyts < 1) yading@11: ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE); yading@11: } else { yading@11: /* Arbitrary values, PAT/PMT will also be written on video key frames */ yading@11: ts->sdt_packet_period = 200; yading@11: ts->pat_packet_period = 40; yading@11: if (pcr_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { yading@11: if (!pcr_st->codec->frame_size) { yading@11: av_log(s, AV_LOG_WARNING, "frame size not set\n"); yading@11: service->pcr_packet_period = yading@11: pcr_st->codec->sample_rate/(10*512); yading@11: } else { yading@11: service->pcr_packet_period = yading@11: pcr_st->codec->sample_rate/(10*pcr_st->codec->frame_size); yading@11: } yading@11: } else { yading@11: // max delta PCR 0.1s yading@11: service->pcr_packet_period = yading@11: pcr_st->codec->time_base.den/(10*pcr_st->codec->time_base.num); yading@11: } yading@11: if(!service->pcr_packet_period) yading@11: service->pcr_packet_period = 1; yading@11: } yading@11: yading@11: // output a PCR as soon as possible yading@11: service->pcr_packet_count = service->pcr_packet_period; yading@11: ts->pat_packet_count = ts->pat_packet_period-1; yading@11: ts->sdt_packet_count = ts->sdt_packet_period-1; yading@11: yading@11: if (ts->mux_rate == 1) yading@11: av_log(s, AV_LOG_VERBOSE, "muxrate VBR, "); yading@11: else yading@11: av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate); yading@11: av_log(s, AV_LOG_VERBOSE, "pcr every %d pkts, " yading@11: "sdt every %d, pat/pmt every %d pkts\n", yading@11: service->pcr_packet_period, yading@11: ts->sdt_packet_period, ts->pat_packet_period); yading@11: yading@11: if (ts->m2ts_mode == -1) { yading@11: if (av_match_ext(s->filename, "m2ts")) { yading@11: ts->m2ts_mode = 1; yading@11: } else { yading@11: ts->m2ts_mode = 0; yading@11: } yading@11: } yading@11: yading@11: avio_flush(s->pb); yading@11: yading@11: return 0; yading@11: yading@11: fail: yading@11: av_free(pids); yading@11: for(i = 0;i < s->nb_streams; i++) { yading@11: MpegTSWriteStream *ts_st; yading@11: st = s->streams[i]; yading@11: ts_st = st->priv_data; yading@11: if (ts_st) { yading@11: av_freep(&ts_st->payload); yading@11: if (ts_st->amux) { yading@11: avformat_free_context(ts_st->amux); yading@11: ts_st->amux = NULL; yading@11: } yading@11: } yading@11: av_freep(&st->priv_data); yading@11: } yading@11: return ret; yading@11: } yading@11: yading@11: /* send SDT, PAT and PMT tables regulary */ yading@11: static void retransmit_si_info(AVFormatContext *s, int force_pat) yading@11: { yading@11: MpegTSWrite *ts = s->priv_data; yading@11: int i; yading@11: yading@11: if (++ts->sdt_packet_count == ts->sdt_packet_period) { yading@11: ts->sdt_packet_count = 0; yading@11: mpegts_write_sdt(s); yading@11: } yading@11: if (++ts->pat_packet_count == ts->pat_packet_period || force_pat) { yading@11: ts->pat_packet_count = 0; yading@11: mpegts_write_pat(s); yading@11: for(i = 0; i < ts->nb_services; i++) { yading@11: mpegts_write_pmt(s, ts->services[i]); yading@11: } yading@11: } yading@11: } yading@11: yading@11: static int write_pcr_bits(uint8_t *buf, int64_t pcr) yading@11: { yading@11: int64_t pcr_low = pcr % 300, pcr_high = pcr / 300; yading@11: yading@11: *buf++ = pcr_high >> 25; yading@11: *buf++ = pcr_high >> 17; yading@11: *buf++ = pcr_high >> 9; yading@11: *buf++ = pcr_high >> 1; yading@11: *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e; yading@11: *buf++ = pcr_low; yading@11: yading@11: return 6; yading@11: } yading@11: yading@11: /* Write a single null transport stream packet */ yading@11: static void mpegts_insert_null_packet(AVFormatContext *s) yading@11: { yading@11: uint8_t *q; yading@11: uint8_t buf[TS_PACKET_SIZE]; yading@11: yading@11: q = buf; yading@11: *q++ = 0x47; yading@11: *q++ = 0x00 | 0x1f; yading@11: *q++ = 0xff; yading@11: *q++ = 0x10; yading@11: memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf)); yading@11: mpegts_prefix_m2ts_header(s); yading@11: avio_write(s->pb, buf, TS_PACKET_SIZE); yading@11: } yading@11: yading@11: /* Write a single transport stream packet with a PCR and no payload */ yading@11: static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st) yading@11: { yading@11: MpegTSWrite *ts = s->priv_data; yading@11: MpegTSWriteStream *ts_st = st->priv_data; yading@11: uint8_t *q; yading@11: uint8_t buf[TS_PACKET_SIZE]; yading@11: yading@11: q = buf; yading@11: *q++ = 0x47; yading@11: *q++ = ts_st->pid >> 8; yading@11: *q++ = ts_st->pid; yading@11: *q++ = 0x20 | ts_st->cc; /* Adaptation only */ yading@11: /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */ yading@11: *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */ yading@11: *q++ = 0x10; /* Adaptation flags: PCR present */ yading@11: yading@11: /* PCR coded into 6 bytes */ yading@11: q += write_pcr_bits(q, get_pcr(ts, s->pb)); yading@11: yading@11: /* stuffing bytes */ yading@11: memset(q, 0xFF, TS_PACKET_SIZE - (q - buf)); yading@11: mpegts_prefix_m2ts_header(s); yading@11: avio_write(s->pb, buf, TS_PACKET_SIZE); yading@11: } yading@11: yading@11: static void write_pts(uint8_t *q, int fourbits, int64_t pts) yading@11: { yading@11: int val; yading@11: yading@11: val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1; yading@11: *q++ = val; yading@11: val = (((pts >> 15) & 0x7fff) << 1) | 1; yading@11: *q++ = val >> 8; yading@11: *q++ = val; yading@11: val = (((pts) & 0x7fff) << 1) | 1; yading@11: *q++ = val >> 8; yading@11: *q++ = val; yading@11: } yading@11: yading@11: /* Set an adaptation field flag in an MPEG-TS packet*/ yading@11: static void set_af_flag(uint8_t *pkt, int flag) yading@11: { yading@11: // expect at least one flag to set yading@11: av_assert0(flag); yading@11: yading@11: if ((pkt[3] & 0x20) == 0) { yading@11: // no AF yet, set adaptation field flag yading@11: pkt[3] |= 0x20; yading@11: // 1 byte length, no flags yading@11: pkt[4] = 1; yading@11: pkt[5] = 0; yading@11: } yading@11: pkt[5] |= flag; yading@11: } yading@11: yading@11: /* Extend the adaptation field by size bytes */ yading@11: static void extend_af(uint8_t *pkt, int size) yading@11: { yading@11: // expect already existing adaptation field yading@11: av_assert0(pkt[3] & 0x20); yading@11: pkt[4] += size; yading@11: } yading@11: yading@11: /* Get a pointer to MPEG-TS payload (right after TS packet header) */ yading@11: static uint8_t *get_ts_payload_start(uint8_t *pkt) yading@11: { yading@11: if (pkt[3] & 0x20) yading@11: return pkt + 5 + pkt[4]; yading@11: else yading@11: return pkt + 4; yading@11: } yading@11: yading@11: /* Add a pes header to the front of payload, and segment into an integer number of yading@11: * ts packets. The final ts packet is padded using an over-sized adaptation header yading@11: * to exactly fill the last ts packet. yading@11: * NOTE: 'payload' contains a complete PES payload. yading@11: */ yading@11: static void mpegts_write_pes(AVFormatContext *s, AVStream *st, yading@11: const uint8_t *payload, int payload_size, yading@11: int64_t pts, int64_t dts, int key) yading@11: { yading@11: MpegTSWriteStream *ts_st = st->priv_data; yading@11: MpegTSWrite *ts = s->priv_data; yading@11: uint8_t buf[TS_PACKET_SIZE]; yading@11: uint8_t *q; yading@11: int val, is_start, len, header_len, write_pcr, private_code, flags; yading@11: int afc_len, stuffing_len; yading@11: int64_t pcr = -1; /* avoid warning */ yading@11: int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE); yading@11: int force_pat = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key; yading@11: yading@11: is_start = 1; yading@11: while (payload_size > 0) { yading@11: retransmit_si_info(s, force_pat); yading@11: force_pat = 0; yading@11: yading@11: write_pcr = 0; yading@11: if (ts_st->pid == ts_st->service->pcr_pid) { yading@11: if (ts->mux_rate > 1 || is_start) // VBR pcr period is based on frames yading@11: ts_st->service->pcr_packet_count++; yading@11: if (ts_st->service->pcr_packet_count >= yading@11: ts_st->service->pcr_packet_period) { yading@11: ts_st->service->pcr_packet_count = 0; yading@11: write_pcr = 1; yading@11: } yading@11: } yading@11: yading@11: if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE && yading@11: (dts - get_pcr(ts, s->pb)/300) > delay) { yading@11: /* pcr insert gets priority over null packet insert */ yading@11: if (write_pcr) yading@11: mpegts_insert_pcr_only(s, st); yading@11: else yading@11: mpegts_insert_null_packet(s); yading@11: continue; /* recalculate write_pcr and possibly retransmit si_info */ yading@11: } yading@11: yading@11: /* prepare packet header */ yading@11: q = buf; yading@11: *q++ = 0x47; yading@11: val = (ts_st->pid >> 8); yading@11: if (is_start) yading@11: val |= 0x40; yading@11: *q++ = val; yading@11: *q++ = ts_st->pid; yading@11: ts_st->cc = (ts_st->cc + 1) & 0xf; yading@11: *q++ = 0x10 | ts_st->cc; // payload indicator + CC yading@11: if (key && is_start && pts != AV_NOPTS_VALUE) { yading@11: // set Random Access for key frames yading@11: if (ts_st->pid == ts_st->service->pcr_pid) yading@11: write_pcr = 1; yading@11: set_af_flag(buf, 0x40); yading@11: q = get_ts_payload_start(buf); yading@11: } yading@11: if (write_pcr) { yading@11: set_af_flag(buf, 0x10); yading@11: q = get_ts_payload_start(buf); yading@11: // add 11, pcr references the last byte of program clock reference base yading@11: if (ts->mux_rate > 1) yading@11: pcr = get_pcr(ts, s->pb); yading@11: else yading@11: pcr = (dts - delay)*300; yading@11: if (dts != AV_NOPTS_VALUE && dts < pcr / 300) yading@11: av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n"); yading@11: extend_af(buf, write_pcr_bits(q, pcr)); yading@11: q = get_ts_payload_start(buf); yading@11: } yading@11: if (is_start) { yading@11: int pes_extension = 0; yading@11: /* write PES header */ yading@11: *q++ = 0x00; yading@11: *q++ = 0x00; yading@11: *q++ = 0x01; yading@11: private_code = 0; yading@11: if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { yading@11: if (st->codec->codec_id == AV_CODEC_ID_DIRAC) { yading@11: *q++ = 0xfd; yading@11: } else yading@11: *q++ = 0xe0; yading@11: } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && yading@11: (st->codec->codec_id == AV_CODEC_ID_MP2 || yading@11: st->codec->codec_id == AV_CODEC_ID_MP3 || yading@11: st->codec->codec_id == AV_CODEC_ID_AAC)) { yading@11: *q++ = 0xc0; yading@11: } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && yading@11: st->codec->codec_id == AV_CODEC_ID_AC3 && yading@11: ts->m2ts_mode) { yading@11: *q++ = 0xfd; yading@11: } else { yading@11: *q++ = 0xbd; yading@11: if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) { yading@11: private_code = 0x20; yading@11: } yading@11: } yading@11: header_len = 0; yading@11: flags = 0; yading@11: if (pts != AV_NOPTS_VALUE) { yading@11: header_len += 5; yading@11: flags |= 0x80; yading@11: } yading@11: if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) { yading@11: header_len += 5; yading@11: flags |= 0x40; yading@11: } yading@11: if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && yading@11: st->codec->codec_id == AV_CODEC_ID_DIRAC) { yading@11: /* set PES_extension_flag */ yading@11: pes_extension = 1; yading@11: flags |= 0x01; yading@11: yading@11: /* yading@11: * One byte for PES2 extension flag + yading@11: * one byte for extension length + yading@11: * one byte for extension id yading@11: */ yading@11: header_len += 3; yading@11: } yading@11: /* for Blu-ray AC3 Audio the PES Extension flag should be as follow yading@11: * otherwise it will not play sound on blu-ray yading@11: */ yading@11: if (ts->m2ts_mode && yading@11: st->codec->codec_type == AVMEDIA_TYPE_AUDIO && yading@11: st->codec->codec_id == AV_CODEC_ID_AC3) { yading@11: /* set PES_extension_flag */ yading@11: pes_extension = 1; yading@11: flags |= 0x01; yading@11: header_len += 3; yading@11: } yading@11: len = payload_size + header_len + 3; yading@11: if (private_code != 0) yading@11: len++; yading@11: if (len > 0xffff) yading@11: len = 0; yading@11: *q++ = len >> 8; yading@11: *q++ = len; yading@11: val = 0x80; yading@11: /* data alignment indicator is required for subtitle data */ yading@11: if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) yading@11: val |= 0x04; yading@11: *q++ = val; yading@11: *q++ = flags; yading@11: *q++ = header_len; yading@11: if (pts != AV_NOPTS_VALUE) { yading@11: write_pts(q, flags >> 6, pts); yading@11: q += 5; yading@11: } yading@11: if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) { yading@11: write_pts(q, 1, dts); yading@11: q += 5; yading@11: } yading@11: if (pes_extension && st->codec->codec_id == AV_CODEC_ID_DIRAC) { yading@11: flags = 0x01; /* set PES_extension_flag_2 */ yading@11: *q++ = flags; yading@11: *q++ = 0x80 | 0x01; /* marker bit + extension length */ yading@11: /* yading@11: * Set the stream id extension flag bit to 0 and yading@11: * write the extended stream id yading@11: */ yading@11: *q++ = 0x00 | 0x60; yading@11: } yading@11: /* For Blu-ray AC3 Audio Setting extended flags */ yading@11: if (ts->m2ts_mode && yading@11: pes_extension && yading@11: st->codec->codec_id == AV_CODEC_ID_AC3) { yading@11: flags = 0x01; /* set PES_extension_flag_2 */ yading@11: *q++ = flags; yading@11: *q++ = 0x80 | 0x01; /* marker bit + extension length */ yading@11: *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */ yading@11: } yading@11: yading@11: yading@11: if (private_code != 0) yading@11: *q++ = private_code; yading@11: is_start = 0; yading@11: } yading@11: /* header size */ yading@11: header_len = q - buf; yading@11: /* data len */ yading@11: len = TS_PACKET_SIZE - header_len; yading@11: if (len > payload_size) yading@11: len = payload_size; yading@11: stuffing_len = TS_PACKET_SIZE - header_len - len; yading@11: if (stuffing_len > 0) { yading@11: /* add stuffing with AFC */ yading@11: if (buf[3] & 0x20) { yading@11: /* stuffing already present: increase its size */ yading@11: afc_len = buf[4] + 1; yading@11: memmove(buf + 4 + afc_len + stuffing_len, yading@11: buf + 4 + afc_len, yading@11: header_len - (4 + afc_len)); yading@11: buf[4] += stuffing_len; yading@11: memset(buf + 4 + afc_len, 0xff, stuffing_len); yading@11: } else { yading@11: /* add stuffing */ yading@11: memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4); yading@11: buf[3] |= 0x20; yading@11: buf[4] = stuffing_len - 1; yading@11: if (stuffing_len >= 2) { yading@11: buf[5] = 0x00; yading@11: memset(buf + 6, 0xff, stuffing_len - 2); yading@11: } yading@11: } yading@11: } yading@11: memcpy(buf + TS_PACKET_SIZE - len, payload, len); yading@11: payload += len; yading@11: payload_size -= len; yading@11: mpegts_prefix_m2ts_header(s); yading@11: avio_write(s->pb, buf, TS_PACKET_SIZE); yading@11: } yading@11: avio_flush(s->pb); yading@11: ts_st->prev_payload_key = key; yading@11: } yading@11: yading@11: static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt) yading@11: { yading@11: AVStream *st = s->streams[pkt->stream_index]; yading@11: int size = pkt->size; yading@11: uint8_t *buf= pkt->data; yading@11: uint8_t *data= NULL; yading@11: MpegTSWrite *ts = s->priv_data; yading@11: MpegTSWriteStream *ts_st = st->priv_data; yading@11: const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE)*2; yading@11: int64_t dts = pkt->dts, pts = pkt->pts; yading@11: yading@11: if (ts->reemit_pat_pmt) { yading@11: av_log(s, AV_LOG_WARNING, "resend_headers option is deprecated, use -mpegts_flags resend_headers\n"); yading@11: ts->reemit_pat_pmt = 0; yading@11: ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT; yading@11: } yading@11: yading@11: if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) { yading@11: ts->pat_packet_count = ts->pat_packet_period - 1; yading@11: ts->sdt_packet_count = ts->sdt_packet_period - 1; yading@11: ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT; yading@11: } yading@11: yading@11: if(ts->copyts < 1){ yading@11: if (pts != AV_NOPTS_VALUE) yading@11: pts += delay; yading@11: if (dts != AV_NOPTS_VALUE) yading@11: dts += delay; yading@11: } yading@11: yading@11: if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) { yading@11: av_log(s, AV_LOG_ERROR, "first pts value must be set\n"); yading@11: return AVERROR_INVALIDDATA; yading@11: } yading@11: ts_st->first_pts_check = 0; yading@11: yading@11: if (st->codec->codec_id == AV_CODEC_ID_H264) { yading@11: const uint8_t *p = buf, *buf_end = p+size; yading@11: uint32_t state = -1; yading@11: yading@11: if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001) { yading@11: if (!st->nb_frames) { yading@11: av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, " yading@11: "no startcode found, use the h264_mp4toannexb bitstream filter (-bsf h264_mp4toannexb)\n"); yading@11: return AVERROR(EINVAL); yading@11: } yading@11: av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing\n"); yading@11: } yading@11: yading@11: do { yading@11: p = avpriv_find_start_code(p, buf_end, &state); yading@11: av_dlog(s, "nal %d\n", state & 0x1f); yading@11: } while (p < buf_end && (state & 0x1f) != 9 && yading@11: (state & 0x1f) != 5 && (state & 0x1f) != 1); yading@11: yading@11: if ((state & 0x1f) != 9) { // AUD NAL yading@11: data = av_malloc(pkt->size+6); yading@11: if (!data) yading@11: return AVERROR(ENOMEM); yading@11: memcpy(data+6, pkt->data, pkt->size); yading@11: AV_WB32(data, 0x00000001); yading@11: data[4] = 0x09; yading@11: data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit yading@11: buf = data; yading@11: size = pkt->size+6; yading@11: } yading@11: } else if (st->codec->codec_id == AV_CODEC_ID_AAC) { yading@11: if (pkt->size < 2) { yading@11: av_log(s, AV_LOG_ERROR, "AAC packet too short\n"); yading@11: return AVERROR_INVALIDDATA; yading@11: } yading@11: if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) { yading@11: int ret; yading@11: AVPacket pkt2; yading@11: yading@11: if (!ts_st->amux) { yading@11: av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format " yading@11: "and extradata missing\n"); yading@11: return AVERROR_INVALIDDATA; yading@11: } yading@11: yading@11: av_init_packet(&pkt2); yading@11: pkt2.data = pkt->data; yading@11: pkt2.size = pkt->size; yading@11: ret = avio_open_dyn_buf(&ts_st->amux->pb); yading@11: if (ret < 0) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: ret = av_write_frame(ts_st->amux, &pkt2); yading@11: if (ret < 0) { yading@11: avio_close_dyn_buf(ts_st->amux->pb, &data); yading@11: ts_st->amux->pb = NULL; yading@11: av_free(data); yading@11: return ret; yading@11: } yading@11: size = avio_close_dyn_buf(ts_st->amux->pb, &data); yading@11: ts_st->amux->pb = NULL; yading@11: buf = data; yading@11: } yading@11: } yading@11: yading@11: if (pkt->dts != AV_NOPTS_VALUE) { yading@11: int i; yading@11: for(i=0; inb_streams; i++){ yading@11: AVStream *st2 = s->streams[i]; yading@11: MpegTSWriteStream *ts_st2 = st2->priv_data; yading@11: if( ts_st2->payload_size yading@11: && (ts_st2->payload_dts == AV_NOPTS_VALUE || dts - ts_st2->payload_dts > delay/2)){ yading@11: mpegts_write_pes(s, st2, ts_st2->payload, ts_st2->payload_size, yading@11: ts_st2->payload_pts, ts_st2->payload_dts, yading@11: ts_st2->payload_flags & AV_PKT_FLAG_KEY); yading@11: ts_st2->payload_size = 0; yading@11: } yading@11: } yading@11: } yading@11: yading@11: if (ts_st->payload_size && ts_st->payload_size + size > ts->pes_payload_size) { yading@11: mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size, yading@11: ts_st->payload_pts, ts_st->payload_dts, yading@11: ts_st->payload_flags & AV_PKT_FLAG_KEY); yading@11: ts_st->payload_size = 0; yading@11: } yading@11: yading@11: if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) { yading@11: av_assert0(!ts_st->payload_size); yading@11: // for video and subtitle, write a single pes packet yading@11: mpegts_write_pes(s, st, buf, size, pts, dts, pkt->flags & AV_PKT_FLAG_KEY); yading@11: av_free(data); yading@11: return 0; yading@11: } yading@11: yading@11: if (!ts_st->payload_size) { yading@11: ts_st->payload_pts = pts; yading@11: ts_st->payload_dts = dts; yading@11: ts_st->payload_flags = pkt->flags; yading@11: } yading@11: yading@11: memcpy(ts_st->payload + ts_st->payload_size, buf, size); yading@11: ts_st->payload_size += size; yading@11: yading@11: av_free(data); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: static void mpegts_write_flush(AVFormatContext *s) yading@11: { yading@11: int i; yading@11: yading@11: /* flush current packets */ yading@11: for(i = 0; i < s->nb_streams; i++) { yading@11: AVStream *st = s->streams[i]; yading@11: MpegTSWriteStream *ts_st = st->priv_data; yading@11: if (ts_st->payload_size > 0) { yading@11: mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size, yading@11: ts_st->payload_pts, ts_st->payload_dts, yading@11: ts_st->payload_flags & AV_PKT_FLAG_KEY); yading@11: ts_st->payload_size = 0; yading@11: } yading@11: } yading@11: avio_flush(s->pb); yading@11: } yading@11: yading@11: static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt) yading@11: { yading@11: if (!pkt) { yading@11: mpegts_write_flush(s); yading@11: return 1; yading@11: } else { yading@11: return mpegts_write_packet_internal(s, pkt); yading@11: } yading@11: } yading@11: yading@11: static int mpegts_write_end(AVFormatContext *s) yading@11: { yading@11: MpegTSWrite *ts = s->priv_data; yading@11: MpegTSService *service; yading@11: int i; yading@11: yading@11: mpegts_write_flush(s); yading@11: yading@11: for(i = 0; i < s->nb_streams; i++) { yading@11: AVStream *st = s->streams[i]; yading@11: MpegTSWriteStream *ts_st = st->priv_data; yading@11: av_freep(&ts_st->payload); yading@11: if (ts_st->amux) { yading@11: avformat_free_context(ts_st->amux); yading@11: ts_st->amux = NULL; yading@11: } yading@11: } yading@11: yading@11: for(i = 0; i < ts->nb_services; i++) { yading@11: service = ts->services[i]; yading@11: av_freep(&service->provider_name); yading@11: av_freep(&service->name); yading@11: av_free(service); yading@11: } yading@11: av_free(ts->services); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: AVOutputFormat ff_mpegts_muxer = { yading@11: .name = "mpegts", yading@11: .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"), yading@11: .mime_type = "video/x-mpegts", yading@11: .extensions = "ts,m2t,m2ts,mts", yading@11: .priv_data_size = sizeof(MpegTSWrite), yading@11: .audio_codec = AV_CODEC_ID_MP2, yading@11: .video_codec = AV_CODEC_ID_MPEG2VIDEO, yading@11: .write_header = mpegts_write_header, yading@11: .write_packet = mpegts_write_packet, yading@11: .write_trailer = mpegts_write_end, yading@11: .flags = AVFMT_ALLOW_FLUSH, yading@11: .priv_class = &mpegts_muxer_class, yading@11: };