| /* | |
| * FLV muxer | |
| * Copyright (c) 2003 The FFmpeg Project | |
| * | |
| * 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/intreadwrite.h" | |
| #include "libavutil/dict.h" | |
| #include "libavutil/intfloat.h" | |
| #include "libavutil/avassert.h" | |
| #include "libavutil/mastering_display_metadata.h" | |
| #include "libavutil/mathematics.h" | |
| #include "libavcodec/codec_desc.h" | |
| #include "libavcodec/mpeg4audio.h" | |
| #include "avio.h" | |
| #include "avc.h" | |
| #include "av1.h" | |
| #include "vpcc.h" | |
| #include "hevc.h" | |
| #include "avformat.h" | |
| #include "flv.h" | |
| #include "internal.h" | |
| #include "mux.h" | |
| #include "libavutil/opt.h" | |
| #include "libavcodec/put_bits.h" | |
| static const AVCodecTag flv_video_codec_ids[] = { | |
| { AV_CODEC_ID_FLV1, FLV_CODECID_H263 }, | |
| { AV_CODEC_ID_H263, FLV_CODECID_REALH263 }, | |
| { AV_CODEC_ID_MPEG4, FLV_CODECID_MPEG4 }, | |
| { AV_CODEC_ID_FLASHSV, FLV_CODECID_SCREEN }, | |
| { AV_CODEC_ID_FLASHSV2, FLV_CODECID_SCREEN2 }, | |
| { AV_CODEC_ID_VP6F, FLV_CODECID_VP6 }, | |
| { AV_CODEC_ID_VP6, FLV_CODECID_VP6 }, | |
| { AV_CODEC_ID_VP6A, FLV_CODECID_VP6A }, | |
| { AV_CODEC_ID_H264, FLV_CODECID_H264 }, | |
| { AV_CODEC_ID_HEVC, MKBETAG('h', 'v', 'c', '1') }, | |
| { AV_CODEC_ID_AV1, MKBETAG('a', 'v', '0', '1') }, | |
| { AV_CODEC_ID_VP9, MKBETAG('v', 'p', '0', '9') }, | |
| { AV_CODEC_ID_NONE, 0 } | |
| }; | |
| static const AVCodecTag flv_audio_codec_ids[] = { | |
| { AV_CODEC_ID_MP3, FLV_CODECID_MP3 >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_PCM_U8, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_PCM_S16BE, FLV_CODECID_PCM >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_PCM_S16LE, FLV_CODECID_PCM_LE >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_ADPCM_SWF, FLV_CODECID_ADPCM >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_AAC, FLV_CODECID_AAC >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_NELLYMOSER, FLV_CODECID_NELLYMOSER >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_PCM_MULAW, FLV_CODECID_PCM_MULAW >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_PCM_ALAW, FLV_CODECID_PCM_ALAW >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_SPEEX, FLV_CODECID_SPEEX >> FLV_AUDIO_CODECID_OFFSET }, | |
| { AV_CODEC_ID_NONE, 0 } | |
| }; | |
| typedef enum { | |
| FLV_AAC_SEQ_HEADER_DETECT = (1 << 0), | |
| FLV_NO_SEQUENCE_END = (1 << 1), | |
| FLV_ADD_KEYFRAME_INDEX = (1 << 2), | |
| FLV_NO_METADATA = (1 << 3), | |
| FLV_NO_DURATION_FILESIZE = (1 << 4), | |
| } FLVFlags; | |
| typedef struct FLVFileposition { | |
| int64_t keyframe_position; | |
| double keyframe_timestamp; | |
| struct FLVFileposition *next; | |
| } FLVFileposition; | |
| typedef struct FLVContext { | |
| AVClass *av_class; | |
| int reserved; | |
| int64_t duration_offset; | |
| int64_t filesize_offset; | |
| int64_t duration; | |
| int64_t delay; ///< first dts delay (needed for AVC & Speex) | |
| int64_t datastart_offset; | |
| int64_t datasize_offset; | |
| int64_t datasize; | |
| int64_t videosize_offset; | |
| int64_t videosize; | |
| int64_t audiosize_offset; | |
| int64_t audiosize; | |
| int64_t metadata_size_pos; | |
| int64_t metadata_totalsize_pos; | |
| int64_t metadata_totalsize; | |
| int64_t keyframe_index_size; | |
| int64_t lasttimestamp_offset; | |
| double lasttimestamp; | |
| int64_t lastkeyframetimestamp_offset; | |
| double lastkeyframetimestamp; | |
| int64_t lastkeyframelocation_offset; | |
| int64_t lastkeyframelocation; | |
| int64_t keyframes_info_offset; | |
| int64_t filepositions_count; | |
| FLVFileposition *filepositions; | |
| FLVFileposition *head_filepositions; | |
| AVCodecParameters *audio_par; | |
| AVCodecParameters *video_par; | |
| double framerate; | |
| AVCodecParameters *data_par; | |
| int flags; | |
| int64_t last_ts[FLV_STREAM_TYPE_NB]; | |
| int metadata_pkt_written; | |
| } FLVContext; | |
| static int get_audio_flags(AVFormatContext *s, AVCodecParameters *par) | |
| { | |
| int flags = (par->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT | |
| : FLV_SAMPLESSIZE_8BIT; | |
| if (par->codec_id == AV_CODEC_ID_AAC) // specs force these parameters | |
| return FLV_CODECID_AAC | FLV_SAMPLERATE_44100HZ | | |
| FLV_SAMPLESSIZE_16BIT | FLV_STEREO; | |
| else if (par->codec_id == AV_CODEC_ID_SPEEX) { | |
| if (par->sample_rate != 16000) { | |
| av_log(s, AV_LOG_ERROR, | |
| "FLV only supports wideband (16kHz) Speex audio\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| if (par->ch_layout.nb_channels != 1) { | |
| av_log(s, AV_LOG_ERROR, "FLV only supports mono Speex audio\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT; | |
| } else { | |
| switch (par->sample_rate) { | |
| case 48000: | |
| // 48khz mp3 is stored with 44k1 samplerate identifer | |
| if (par->codec_id == AV_CODEC_ID_MP3) { | |
| flags |= FLV_SAMPLERATE_44100HZ; | |
| break; | |
| } else { | |
| goto error; | |
| } | |
| case 44100: | |
| flags |= FLV_SAMPLERATE_44100HZ; | |
| break; | |
| case 22050: | |
| flags |= FLV_SAMPLERATE_22050HZ; | |
| break; | |
| case 11025: | |
| flags |= FLV_SAMPLERATE_11025HZ; | |
| break; | |
| case 16000: // nellymoser only | |
| case 8000: // nellymoser only | |
| case 5512: // not MP3 | |
| if (par->codec_id != AV_CODEC_ID_MP3) { | |
| flags |= FLV_SAMPLERATE_SPECIAL; | |
| break; | |
| } | |
| default: | |
| error: | |
| av_log(s, AV_LOG_ERROR, | |
| "FLV does not support sample rate %d, " | |
| "choose from (44100, 22050, 11025)\n", par->sample_rate); | |
| return AVERROR(EINVAL); | |
| } | |
| } | |
| if (par->ch_layout.nb_channels > 1) | |
| flags |= FLV_STEREO; | |
| switch (par->codec_id) { | |
| case AV_CODEC_ID_MP3: | |
| flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT; | |
| break; | |
| case AV_CODEC_ID_PCM_U8: | |
| flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_8BIT; | |
| break; | |
| case AV_CODEC_ID_PCM_S16BE: | |
| flags |= FLV_CODECID_PCM | FLV_SAMPLESSIZE_16BIT; | |
| break; | |
| case AV_CODEC_ID_PCM_S16LE: | |
| flags |= FLV_CODECID_PCM_LE | FLV_SAMPLESSIZE_16BIT; | |
| break; | |
| case AV_CODEC_ID_ADPCM_SWF: | |
| flags |= FLV_CODECID_ADPCM | FLV_SAMPLESSIZE_16BIT; | |
| break; | |
| case AV_CODEC_ID_NELLYMOSER: | |
| if (par->sample_rate == 8000) | |
| flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT; | |
| else if (par->sample_rate == 16000) | |
| flags |= FLV_CODECID_NELLYMOSER_16KHZ_MONO | FLV_SAMPLESSIZE_16BIT; | |
| else | |
| flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT; | |
| break; | |
| case AV_CODEC_ID_PCM_MULAW: | |
| flags |= FLV_CODECID_PCM_MULAW | FLV_SAMPLESSIZE_16BIT; | |
| break; | |
| case AV_CODEC_ID_PCM_ALAW: | |
| flags |= FLV_CODECID_PCM_ALAW | FLV_SAMPLESSIZE_16BIT; | |
| break; | |
| case 0: | |
| flags |= par->codec_tag << 4; | |
| break; | |
| default: | |
| av_log(s, AV_LOG_ERROR, "Audio codec '%s' not compatible with FLV\n", | |
| avcodec_get_name(par->codec_id)); | |
| return AVERROR(EINVAL); | |
| } | |
| return flags; | |
| } | |
| static void put_amf_string(AVIOContext *pb, const char *str) | |
| { | |
| size_t len = strlen(str); | |
| avio_wb16(pb, len); | |
| // Avoid avio_write() if put_amf_string(pb, "") is inlined. | |
| if (av_builtin_constant_p(len == 0) && len == 0) | |
| return; | |
| avio_write(pb, str, len); | |
| } | |
| // FLV timestamps are 32 bits signed, RTMP timestamps should be 32-bit unsigned | |
| static void put_timestamp(AVIOContext *pb, int64_t ts) { | |
| avio_wb24(pb, ts & 0xFFFFFF); | |
| avio_w8(pb, (ts >> 24) & 0x7F); | |
| } | |
| static void put_eos_tag(AVIOContext *pb, unsigned ts, enum AVCodecID codec_id) | |
| { | |
| uint32_t tag = ff_codec_get_tag(flv_video_codec_ids, codec_id); | |
| /* ub[4] FrameType = 1, ub[4] CodecId */ | |
| tag |= 1 << 4; | |
| avio_w8(pb, FLV_TAG_TYPE_VIDEO); | |
| avio_wb24(pb, 5); /* Tag Data Size */ | |
| put_timestamp(pb, ts); | |
| avio_wb24(pb, 0); /* StreamId = 0 */ | |
| avio_w8(pb, tag); | |
| avio_w8(pb, 2); /* AVC end of sequence */ | |
| avio_wb24(pb, 0); /* Always 0 for AVC EOS. */ | |
| avio_wb32(pb, 16); /* Size of FLV tag */ | |
| } | |
| static void put_amf_double(AVIOContext *pb, double d) | |
| { | |
| avio_w8(pb, AMF_DATA_TYPE_NUMBER); | |
| avio_wb64(pb, av_double2int(d)); | |
| } | |
| static void put_amf_byte(AVIOContext *pb, unsigned char abyte) | |
| { | |
| avio_w8(pb, abyte); | |
| } | |
| static void put_amf_dword_array(AVIOContext *pb, uint32_t dw) | |
| { | |
| avio_w8(pb, AMF_DATA_TYPE_ARRAY); | |
| avio_wb32(pb, dw); | |
| } | |
| static void put_amf_bool(AVIOContext *pb, int b) | |
| { | |
| avio_w8(pb, AMF_DATA_TYPE_BOOL); | |
| avio_w8(pb, !!b); | |
| } | |
| static void write_metadata(AVFormatContext *s, unsigned int ts) | |
| { | |
| AVIOContext *pb = s->pb; | |
| FLVContext *flv = s->priv_data; | |
| int write_duration_filesize = !(flv->flags & FLV_NO_DURATION_FILESIZE); | |
| int metadata_count = 0; | |
| int64_t metadata_count_pos; | |
| const AVDictionaryEntry *tag = NULL; | |
| /* write meta_tag */ | |
| avio_w8(pb, FLV_TAG_TYPE_META); // tag type META | |
| flv->metadata_size_pos = avio_tell(pb); | |
| avio_wb24(pb, 0); // size of data part (sum of all parts below) | |
| put_timestamp(pb, ts); // timestamp | |
| avio_wb24(pb, 0); // reserved | |
| /* now data of data_size size */ | |
| /* first event name as a string */ | |
| avio_w8(pb, AMF_DATA_TYPE_STRING); | |
| put_amf_string(pb, "onMetaData"); // 12 bytes | |
| /* mixed array (hash) with size and string/type/data tuples */ | |
| avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY); | |
| metadata_count_pos = avio_tell(pb); | |
| metadata_count = 4 * !!flv->video_par + | |
| 5 * !!flv->audio_par + | |
| 1 * !!flv->data_par; | |
| if (write_duration_filesize) { | |
| metadata_count += 2; // +2 for duration and file size | |
| } | |
| avio_wb32(pb, metadata_count); | |
| if (write_duration_filesize) { | |
| put_amf_string(pb, "duration"); | |
| flv->duration_offset = avio_tell(pb); | |
| // fill in the guessed duration, it'll be corrected later if incorrect | |
| put_amf_double(pb, s->duration / AV_TIME_BASE); | |
| } | |
| if (flv->video_par) { | |
| put_amf_string(pb, "width"); | |
| put_amf_double(pb, flv->video_par->width); | |
| put_amf_string(pb, "height"); | |
| put_amf_double(pb, flv->video_par->height); | |
| put_amf_string(pb, "videodatarate"); | |
| put_amf_double(pb, flv->video_par->bit_rate / 1024.0); | |
| if (flv->framerate != 0.0) { | |
| put_amf_string(pb, "framerate"); | |
| put_amf_double(pb, flv->framerate); | |
| metadata_count++; | |
| } | |
| put_amf_string(pb, "videocodecid"); | |
| put_amf_double(pb, flv->video_par->codec_tag); | |
| } | |
| if (flv->audio_par) { | |
| put_amf_string(pb, "audiodatarate"); | |
| put_amf_double(pb, flv->audio_par->bit_rate / 1024.0); | |
| put_amf_string(pb, "audiosamplerate"); | |
| put_amf_double(pb, flv->audio_par->sample_rate); | |
| put_amf_string(pb, "audiosamplesize"); | |
| put_amf_double(pb, flv->audio_par->codec_id == AV_CODEC_ID_PCM_U8 ? 8 : 16); | |
| put_amf_string(pb, "stereo"); | |
| put_amf_bool(pb, flv->audio_par->ch_layout.nb_channels == 2); | |
| put_amf_string(pb, "audiocodecid"); | |
| put_amf_double(pb, flv->audio_par->codec_tag); | |
| } | |
| if (flv->data_par) { | |
| put_amf_string(pb, "datastream"); | |
| put_amf_double(pb, 0.0); | |
| } | |
| ff_standardize_creation_time(s); | |
| while ((tag = av_dict_iterate(s->metadata, tag))) { | |
| if( !strcmp(tag->key, "width") | |
| ||!strcmp(tag->key, "height") | |
| ||!strcmp(tag->key, "videodatarate") | |
| ||!strcmp(tag->key, "framerate") | |
| ||!strcmp(tag->key, "videocodecid") | |
| ||!strcmp(tag->key, "audiodatarate") | |
| ||!strcmp(tag->key, "audiosamplerate") | |
| ||!strcmp(tag->key, "audiosamplesize") | |
| ||!strcmp(tag->key, "stereo") | |
| ||!strcmp(tag->key, "audiocodecid") | |
| ||!strcmp(tag->key, "duration") | |
| ||!strcmp(tag->key, "onMetaData") | |
| ||!strcmp(tag->key, "datasize") | |
| ||!strcmp(tag->key, "lasttimestamp") | |
| ||!strcmp(tag->key, "totalframes") | |
| ||!strcmp(tag->key, "hasAudio") | |
| ||!strcmp(tag->key, "hasVideo") | |
| ||!strcmp(tag->key, "hasCuePoints") | |
| ||!strcmp(tag->key, "hasMetadata") | |
| ||!strcmp(tag->key, "hasKeyframes") | |
| ){ | |
| av_log(s, AV_LOG_DEBUG, "Ignoring metadata for %s\n", tag->key); | |
| continue; | |
| } | |
| put_amf_string(pb, tag->key); | |
| avio_w8(pb, AMF_DATA_TYPE_STRING); | |
| put_amf_string(pb, tag->value); | |
| metadata_count++; | |
| } | |
| if (write_duration_filesize) { | |
| put_amf_string(pb, "filesize"); | |
| flv->filesize_offset = avio_tell(pb); | |
| put_amf_double(pb, 0); // delayed write | |
| } | |
| if (flv->flags & FLV_ADD_KEYFRAME_INDEX) { | |
| flv->keyframe_index_size = 0; | |
| put_amf_string(pb, "hasVideo"); | |
| put_amf_bool(pb, !!flv->video_par); | |
| metadata_count++; | |
| put_amf_string(pb, "hasKeyframes"); | |
| put_amf_bool(pb, 1); | |
| metadata_count++; | |
| put_amf_string(pb, "hasAudio"); | |
| put_amf_bool(pb, !!flv->audio_par); | |
| metadata_count++; | |
| put_amf_string(pb, "hasMetadata"); | |
| put_amf_bool(pb, 1); | |
| metadata_count++; | |
| put_amf_string(pb, "canSeekToEnd"); | |
| put_amf_bool(pb, 1); | |
| metadata_count++; | |
| put_amf_string(pb, "datasize"); | |
| flv->datasize_offset = avio_tell(pb); | |
| flv->datasize = 0; | |
| put_amf_double(pb, flv->datasize); | |
| metadata_count++; | |
| put_amf_string(pb, "videosize"); | |
| flv->videosize_offset = avio_tell(pb); | |
| flv->videosize = 0; | |
| put_amf_double(pb, flv->videosize); | |
| metadata_count++; | |
| put_amf_string(pb, "audiosize"); | |
| flv->audiosize_offset = avio_tell(pb); | |
| flv->audiosize = 0; | |
| put_amf_double(pb, flv->audiosize); | |
| metadata_count++; | |
| put_amf_string(pb, "lasttimestamp"); | |
| flv->lasttimestamp_offset = avio_tell(pb); | |
| flv->lasttimestamp = 0; | |
| put_amf_double(pb, 0); | |
| metadata_count++; | |
| put_amf_string(pb, "lastkeyframetimestamp"); | |
| flv->lastkeyframetimestamp_offset = avio_tell(pb); | |
| flv->lastkeyframetimestamp = 0; | |
| put_amf_double(pb, 0); | |
| metadata_count++; | |
| put_amf_string(pb, "lastkeyframelocation"); | |
| flv->lastkeyframelocation_offset = avio_tell(pb); | |
| flv->lastkeyframelocation = 0; | |
| put_amf_double(pb, 0); | |
| metadata_count++; | |
| put_amf_string(pb, "keyframes"); | |
| put_amf_byte(pb, AMF_DATA_TYPE_OBJECT); | |
| metadata_count++; | |
| flv->keyframes_info_offset = avio_tell(pb); | |
| } | |
| put_amf_string(pb, ""); | |
| avio_w8(pb, AMF_END_OF_OBJECT); | |
| /* write total size of tag */ | |
| flv->metadata_totalsize = avio_tell(pb) - flv->metadata_size_pos - 10; | |
| avio_seek(pb, metadata_count_pos, SEEK_SET); | |
| avio_wb32(pb, metadata_count); | |
| avio_seek(pb, flv->metadata_size_pos, SEEK_SET); | |
| avio_wb24(pb, flv->metadata_totalsize); | |
| avio_skip(pb, flv->metadata_totalsize + 10 - 3); | |
| flv->metadata_totalsize_pos = avio_tell(pb); | |
| avio_wb32(pb, flv->metadata_totalsize + 11); | |
| } | |
| static void flv_write_metadata_packet(AVFormatContext *s, AVCodecParameters *par, unsigned int ts) | |
| { | |
| AVIOContext *pb = s->pb; | |
| FLVContext *flv = s->priv_data; | |
| AVContentLightMetadata *lightMetadata = NULL; | |
| AVMasteringDisplayMetadata *displayMetadata = NULL; | |
| int64_t metadata_size_pos = 0; | |
| int64_t total_size = 0; | |
| const AVPacketSideData *side_data = NULL; | |
| if (flv->metadata_pkt_written) return; | |
| if (par->codec_id == AV_CODEC_ID_HEVC || par->codec_id == AV_CODEC_ID_AV1 || | |
| par->codec_id == AV_CODEC_ID_VP9) { | |
| int flags_size = 5; | |
| side_data = av_packet_side_data_get(par->coded_side_data, par->nb_coded_side_data, | |
| AV_PKT_DATA_CONTENT_LIGHT_LEVEL); | |
| if (side_data) | |
| lightMetadata = (AVContentLightMetadata *)side_data->data; | |
| side_data = av_packet_side_data_get(par->coded_side_data, par->nb_coded_side_data, | |
| AV_PKT_DATA_MASTERING_DISPLAY_METADATA); | |
| if (side_data) | |
| displayMetadata = (AVMasteringDisplayMetadata *)side_data->data; | |
| /* | |
| * Reference Enhancing FLV | |
| * https://github.com/veovera/enhanced-rtmp/blob/main/enhanced-rtmp.pdf | |
| * */ | |
| avio_w8(pb, FLV_TAG_TYPE_VIDEO); //write video tag type | |
| metadata_size_pos = avio_tell(pb); | |
| avio_wb24(pb, 0 + flags_size); | |
| put_timestamp(pb, ts); //ts = pkt->dts, gen | |
| avio_wb24(pb, flv->reserved); | |
| if (par->codec_id == AV_CODEC_ID_HEVC) { | |
| avio_w8(pb, FLV_IS_EX_HEADER | PacketTypeMetadata| FLV_FRAME_VIDEO_INFO_CMD); // ExVideoTagHeader mode with PacketTypeMetadata | |
| avio_write(pb, "hvc1", 4); | |
| } else if (par->codec_id == AV_CODEC_ID_AV1 || par->codec_id == AV_CODEC_ID_VP9) { | |
| avio_w8(pb, FLV_IS_EX_HEADER | PacketTypeMetadata| FLV_FRAME_VIDEO_INFO_CMD); | |
| avio_write(pb, par->codec_id == AV_CODEC_ID_AV1 ? "av01" : "vp09", 4); | |
| } | |
| avio_w8(pb, AMF_DATA_TYPE_STRING); | |
| put_amf_string(pb, "colorInfo"); | |
| avio_w8(pb, AMF_DATA_TYPE_OBJECT); | |
| put_amf_string(pb, "colorConfig"); // colorConfig | |
| avio_w8(pb, AMF_DATA_TYPE_OBJECT); | |
| if (par->color_trc != AVCOL_TRC_UNSPECIFIED && | |
| par->color_trc < AVCOL_TRC_NB) { | |
| put_amf_string(pb, "transferCharacteristics"); // color_trc | |
| put_amf_double(pb, par->color_trc); | |
| } | |
| if (par->color_space != AVCOL_SPC_UNSPECIFIED && | |
| par->color_space < AVCOL_SPC_NB) { | |
| put_amf_string(pb, "matrixCoefficients"); // colorspace | |
| put_amf_double(pb, par->color_space); | |
| } | |
| if (par->color_primaries != AVCOL_PRI_UNSPECIFIED && | |
| par->color_primaries < AVCOL_PRI_NB) { | |
| put_amf_string(pb, "colorPrimaries"); // color_primaries | |
| put_amf_double(pb, par->color_primaries); | |
| } | |
| put_amf_string(pb, ""); | |
| avio_w8(pb, AMF_END_OF_OBJECT); | |
| if (lightMetadata) { | |
| put_amf_string(pb, "hdrCll"); | |
| avio_w8(pb, AMF_DATA_TYPE_OBJECT); | |
| put_amf_string(pb, "maxFall"); | |
| put_amf_double(pb, lightMetadata->MaxFALL); | |
| put_amf_string(pb, "maxCLL"); | |
| put_amf_double(pb, lightMetadata->MaxCLL); | |
| put_amf_string(pb, ""); | |
| avio_w8(pb, AMF_END_OF_OBJECT); | |
| } | |
| if (displayMetadata && (displayMetadata->has_primaries || displayMetadata->has_luminance)) { | |
| put_amf_string(pb, "hdrMdcv"); | |
| avio_w8(pb, AMF_DATA_TYPE_OBJECT); | |
| if (displayMetadata->has_primaries) { | |
| put_amf_string(pb, "redX"); | |
| put_amf_double(pb, av_q2d(displayMetadata->display_primaries[0][0])); | |
| put_amf_string(pb, "redY"); | |
| put_amf_double(pb, av_q2d(displayMetadata->display_primaries[0][1])); | |
| put_amf_string(pb, "greenX"); | |
| put_amf_double(pb, av_q2d(displayMetadata->display_primaries[1][0])); | |
| put_amf_string(pb, "greenY"); | |
| put_amf_double(pb, av_q2d(displayMetadata->display_primaries[1][1])); | |
| put_amf_string(pb, "blueX"); | |
| put_amf_double(pb, av_q2d(displayMetadata->display_primaries[2][0])); | |
| put_amf_string(pb, "blueY"); | |
| put_amf_double(pb, av_q2d(displayMetadata->display_primaries[2][1])); | |
| put_amf_string(pb, "whitePointX"); | |
| put_amf_double(pb, av_q2d(displayMetadata->white_point[0])); | |
| put_amf_string(pb, "whitePointY"); | |
| put_amf_double(pb, av_q2d(displayMetadata->white_point[1])); | |
| } | |
| if (displayMetadata->has_luminance) { | |
| put_amf_string(pb, "maxLuminance"); | |
| put_amf_double(pb, av_q2d(displayMetadata->max_luminance)); | |
| put_amf_string(pb, "minLuminance"); | |
| put_amf_double(pb, av_q2d(displayMetadata->min_luminance)); | |
| } | |
| put_amf_string(pb, ""); | |
| avio_w8(pb, AMF_END_OF_OBJECT); | |
| } | |
| put_amf_string(pb, ""); | |
| avio_w8(pb, AMF_END_OF_OBJECT); | |
| total_size = avio_tell(pb) - metadata_size_pos - 10; | |
| avio_seek(pb, metadata_size_pos, SEEK_SET); | |
| avio_wb24(pb, total_size); | |
| avio_skip(pb, total_size + 10 - 3); | |
| avio_wb32(pb, total_size + 11); // previous tag size | |
| flv->metadata_pkt_written = 1; | |
| } | |
| } | |
| static int unsupported_codec(AVFormatContext *s, | |
| const char* type, int codec_id) | |
| { | |
| const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id); | |
| av_log(s, AV_LOG_ERROR, | |
| "%s codec %s not compatible with flv\n", | |
| type, | |
| desc ? desc->name : "unknown"); | |
| return AVERROR(ENOSYS); | |
| } | |
| static void flv_write_codec_header(AVFormatContext* s, AVCodecParameters* par, int64_t ts) { | |
| int64_t data_size; | |
| AVIOContext *pb = s->pb; | |
| FLVContext *flv = s->priv_data; | |
| if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264 | |
| || par->codec_id == AV_CODEC_ID_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC | |
| || par->codec_id == AV_CODEC_ID_AV1 || par->codec_id == AV_CODEC_ID_VP9) { | |
| int64_t pos; | |
| avio_w8(pb, | |
| par->codec_type == AVMEDIA_TYPE_VIDEO ? | |
| FLV_TAG_TYPE_VIDEO : FLV_TAG_TYPE_AUDIO); | |
| avio_wb24(pb, 0); // size patched later | |
| put_timestamp(pb, ts); | |
| avio_wb24(pb, 0); // streamid | |
| pos = avio_tell(pb); | |
| if (par->codec_id == AV_CODEC_ID_AAC) { | |
| avio_w8(pb, get_audio_flags(s, par)); | |
| avio_w8(pb, 0); // AAC sequence header | |
| if (!par->extradata_size && (flv->flags & FLV_AAC_SEQ_HEADER_DETECT)) { | |
| PutBitContext pbc; | |
| int samplerate_index; | |
| int channels = par->ch_layout.nb_channels | |
| - (par->ch_layout.nb_channels == 8 ? 1 : 0); | |
| uint8_t data[2]; | |
| for (samplerate_index = 0; samplerate_index < 16; | |
| samplerate_index++) | |
| if (par->sample_rate | |
| == ff_mpeg4audio_sample_rates[samplerate_index]) | |
| break; | |
| init_put_bits(&pbc, data, sizeof(data)); | |
| put_bits(&pbc, 5, par->profile + 1); //profile | |
| put_bits(&pbc, 4, samplerate_index); //sample rate index | |
| put_bits(&pbc, 4, channels); | |
| put_bits(&pbc, 1, 0); //frame length - 1024 samples | |
| put_bits(&pbc, 1, 0); //does not depend on core coder | |
| put_bits(&pbc, 1, 0); //is not extension | |
| flush_put_bits(&pbc); | |
| avio_w8(pb, data[0]); | |
| avio_w8(pb, data[1]); | |
| av_log(s, AV_LOG_WARNING, "AAC sequence header: %02x %02x.\n", | |
| data[0], data[1]); | |
| } | |
| avio_write(pb, par->extradata, par->extradata_size); | |
| } else { | |
| if (par->codec_id == AV_CODEC_ID_HEVC) { | |
| avio_w8(pb, FLV_IS_EX_HEADER | PacketTypeSequenceStart | FLV_FRAME_KEY); // ExVideoTagHeader mode with PacketTypeSequenceStart | |
| avio_write(pb, "hvc1", 4); | |
| } else if (par->codec_id == AV_CODEC_ID_AV1 || par->codec_id == AV_CODEC_ID_VP9) { | |
| avio_w8(pb, FLV_IS_EX_HEADER | PacketTypeSequenceStart | FLV_FRAME_KEY); | |
| avio_write(pb, par->codec_id == AV_CODEC_ID_AV1 ? "av01" : "vp09", 4); | |
| } else { | |
| avio_w8(pb, par->codec_tag | FLV_FRAME_KEY); // flags | |
| avio_w8(pb, 0); // AVC sequence header | |
| avio_wb24(pb, 0); // composition time | |
| } | |
| if (par->codec_id == AV_CODEC_ID_HEVC) | |
| ff_isom_write_hvcc(pb, par->extradata, par->extradata_size, 0); | |
| else if (par->codec_id == AV_CODEC_ID_AV1) | |
| ff_isom_write_av1c(pb, par->extradata, par->extradata_size, 1); | |
| else if (par->codec_id == AV_CODEC_ID_VP9) | |
| ff_isom_write_vpcc(s, pb, par->extradata, par->extradata_size, par); | |
| else | |
| ff_isom_write_avcc(pb, par->extradata, par->extradata_size); | |
| } | |
| data_size = avio_tell(pb) - pos; | |
| avio_seek(pb, -data_size - 10, SEEK_CUR); | |
| avio_wb24(pb, data_size); | |
| avio_skip(pb, data_size + 10 - 3); | |
| avio_wb32(pb, data_size + 11); // previous tag size | |
| } | |
| } | |
| static int flv_append_keyframe_info(AVFormatContext *s, FLVContext *flv, double ts, int64_t pos) | |
| { | |
| FLVFileposition *position = av_malloc(sizeof(FLVFileposition)); | |
| if (!position) { | |
| av_log(s, AV_LOG_WARNING, "no mem for add keyframe index!\n"); | |
| return AVERROR(ENOMEM); | |
| } | |
| position->keyframe_timestamp = ts; | |
| position->keyframe_position = pos; | |
| if (!flv->filepositions_count) { | |
| flv->filepositions = position; | |
| flv->head_filepositions = flv->filepositions; | |
| position->next = NULL; | |
| } else { | |
| flv->filepositions->next = position; | |
| position->next = NULL; | |
| flv->filepositions = flv->filepositions->next; | |
| } | |
| flv->filepositions_count++; | |
| return 0; | |
| } | |
| static int shift_data(AVFormatContext *s) | |
| { | |
| int ret; | |
| int64_t metadata_size = 0; | |
| FLVContext *flv = s->priv_data; | |
| metadata_size = flv->filepositions_count * 9 * 2 + 10; /* filepositions and times value */ | |
| metadata_size += 2 + 13; /* filepositions String */ | |
| metadata_size += 2 + 5; /* times String */ | |
| metadata_size += 3; /* Object end */ | |
| flv->keyframe_index_size = metadata_size; | |
| if (metadata_size < 0) | |
| return metadata_size; | |
| ret = ff_format_shift_data(s, flv->keyframes_info_offset, metadata_size); | |
| if (ret < 0) | |
| return ret; | |
| avio_seek(s->pb, flv->metadata_size_pos, SEEK_SET); | |
| avio_wb24(s->pb, flv->metadata_totalsize + metadata_size); | |
| avio_seek(s->pb, flv->metadata_totalsize_pos + metadata_size, SEEK_SET); | |
| avio_wb32(s->pb, flv->metadata_totalsize + 11 + metadata_size); | |
| return 0; | |
| } | |
| static int flv_init(struct AVFormatContext *s) | |
| { | |
| int i; | |
| FLVContext *flv = s->priv_data; | |
| if (s->nb_streams > FLV_STREAM_TYPE_NB) { | |
| av_log(s, AV_LOG_ERROR, "invalid number of streams %d\n", | |
| s->nb_streams); | |
| return AVERROR(EINVAL); | |
| } | |
| for (i = 0; i < s->nb_streams; i++) { | |
| AVCodecParameters *par = s->streams[i]->codecpar; | |
| switch (par->codec_type) { | |
| case AVMEDIA_TYPE_VIDEO: | |
| if (s->streams[i]->avg_frame_rate.den && | |
| s->streams[i]->avg_frame_rate.num) { | |
| flv->framerate = av_q2d(s->streams[i]->avg_frame_rate); | |
| } | |
| if (flv->video_par) { | |
| av_log(s, AV_LOG_ERROR, | |
| "at most one video stream is supported in flv\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| flv->video_par = par; | |
| if (!ff_codec_get_tag(flv_video_codec_ids, par->codec_id)) | |
| return unsupported_codec(s, "Video", par->codec_id); | |
| if (par->codec_id == AV_CODEC_ID_MPEG4 || | |
| par->codec_id == AV_CODEC_ID_H263) { | |
| int error = s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL; | |
| av_log(s, error ? AV_LOG_ERROR : AV_LOG_WARNING, | |
| "Codec %s is not supported in the official FLV specification,\n", avcodec_get_name(par->codec_id)); | |
| if (error) { | |
| av_log(s, AV_LOG_ERROR, | |
| "use vstrict=-1 / -strict -1 to use it anyway.\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| } else if (par->codec_id == AV_CODEC_ID_VP6) { | |
| av_log(s, AV_LOG_WARNING, | |
| "Muxing VP6 in flv will produce flipped video on playback.\n"); | |
| } | |
| break; | |
| case AVMEDIA_TYPE_AUDIO: | |
| if (flv->audio_par) { | |
| av_log(s, AV_LOG_ERROR, | |
| "at most one audio stream is supported in flv\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| flv->audio_par = par; | |
| if (get_audio_flags(s, par) < 0) | |
| return unsupported_codec(s, "Audio", par->codec_id); | |
| if (par->codec_id == AV_CODEC_ID_PCM_S16BE) | |
| av_log(s, AV_LOG_WARNING, | |
| "16-bit big-endian audio in flv is valid but most likely unplayable (hardware dependent); use s16le\n"); | |
| break; | |
| case AVMEDIA_TYPE_DATA: | |
| if (par->codec_id != AV_CODEC_ID_TEXT && par->codec_id != AV_CODEC_ID_NONE) | |
| return unsupported_codec(s, "Data", par->codec_id); | |
| flv->data_par = par; | |
| break; | |
| case AVMEDIA_TYPE_SUBTITLE: | |
| if (par->codec_id != AV_CODEC_ID_TEXT) { | |
| av_log(s, AV_LOG_ERROR, "Subtitle codec '%s' for stream %d is not compatible with FLV\n", | |
| avcodec_get_name(par->codec_id), i); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| flv->data_par = par; | |
| break; | |
| default: | |
| av_log(s, AV_LOG_ERROR, "Codec type '%s' for stream %d is not compatible with FLV\n", | |
| av_get_media_type_string(par->codec_type), i); | |
| return AVERROR(EINVAL); | |
| } | |
| avpriv_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */ | |
| flv->last_ts[i] = -1; | |
| } | |
| flv->delay = AV_NOPTS_VALUE; | |
| return 0; | |
| } | |
| static int flv_write_header(AVFormatContext *s) | |
| { | |
| int i; | |
| AVIOContext *pb = s->pb; | |
| FLVContext *flv = s->priv_data; | |
| avio_write(pb, "FLV", 3); | |
| avio_w8(pb, 1); | |
| avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!flv->audio_par + | |
| FLV_HEADER_FLAG_HASVIDEO * !!flv->video_par); | |
| avio_wb32(pb, 9); | |
| avio_wb32(pb, 0); | |
| for (i = 0; i < s->nb_streams; i++) | |
| if (s->streams[i]->codecpar->codec_tag == 5) { | |
| avio_w8(pb, 8); // message type | |
| avio_wb24(pb, 0); // include flags | |
| avio_wb24(pb, 0); // time stamp | |
| avio_wb32(pb, 0); // reserved | |
| avio_wb32(pb, 11); // size | |
| flv->reserved = 5; | |
| } | |
| if (flv->flags & FLV_NO_METADATA) { | |
| pb->seekable = 0; | |
| } else { | |
| write_metadata(s, 0); | |
| } | |
| for (i = 0; i < s->nb_streams; i++) { | |
| flv_write_codec_header(s, s->streams[i]->codecpar, 0); | |
| } | |
| flv->datastart_offset = avio_tell(pb); | |
| return 0; | |
| } | |
| static int flv_write_trailer(AVFormatContext *s) | |
| { | |
| int64_t file_size; | |
| AVIOContext *pb = s->pb; | |
| FLVContext *flv = s->priv_data; | |
| int build_keyframes_idx = flv->flags & FLV_ADD_KEYFRAME_INDEX; | |
| int i, res; | |
| int64_t cur_pos = avio_tell(s->pb); | |
| if (build_keyframes_idx) { | |
| const FLVFileposition *newflv_posinfo; | |
| avio_seek(pb, flv->videosize_offset, SEEK_SET); | |
| put_amf_double(pb, flv->videosize); | |
| avio_seek(pb, flv->audiosize_offset, SEEK_SET); | |
| put_amf_double(pb, flv->audiosize); | |
| avio_seek(pb, flv->lasttimestamp_offset, SEEK_SET); | |
| put_amf_double(pb, flv->lasttimestamp); | |
| avio_seek(pb, flv->lastkeyframetimestamp_offset, SEEK_SET); | |
| put_amf_double(pb, flv->lastkeyframetimestamp); | |
| avio_seek(pb, flv->lastkeyframelocation_offset, SEEK_SET); | |
| put_amf_double(pb, flv->lastkeyframelocation + flv->keyframe_index_size); | |
| avio_seek(pb, cur_pos, SEEK_SET); | |
| res = shift_data(s); | |
| if (res < 0) { | |
| goto end; | |
| } | |
| avio_seek(pb, flv->keyframes_info_offset, SEEK_SET); | |
| put_amf_string(pb, "filepositions"); | |
| put_amf_dword_array(pb, flv->filepositions_count); | |
| for (newflv_posinfo = flv->head_filepositions; newflv_posinfo; newflv_posinfo = newflv_posinfo->next) { | |
| put_amf_double(pb, newflv_posinfo->keyframe_position + flv->keyframe_index_size); | |
| } | |
| put_amf_string(pb, "times"); | |
| put_amf_dword_array(pb, flv->filepositions_count); | |
| for (newflv_posinfo = flv->head_filepositions; newflv_posinfo; newflv_posinfo = newflv_posinfo->next) { | |
| put_amf_double(pb, newflv_posinfo->keyframe_timestamp); | |
| } | |
| put_amf_string(pb, ""); | |
| avio_w8(pb, AMF_END_OF_OBJECT); | |
| avio_seek(pb, cur_pos + flv->keyframe_index_size, SEEK_SET); | |
| } | |
| end: | |
| if (flv->flags & FLV_NO_SEQUENCE_END) { | |
| av_log(s, AV_LOG_DEBUG, "FLV no sequence end mode open\n"); | |
| } else { | |
| /* Add EOS tag */ | |
| for (i = 0; i < s->nb_streams; i++) { | |
| AVCodecParameters *par = s->streams[i]->codecpar; | |
| if (par->codec_type == AVMEDIA_TYPE_VIDEO && | |
| (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4)) | |
| put_eos_tag(pb, flv->last_ts[i], par->codec_id); | |
| } | |
| } | |
| file_size = avio_tell(pb); | |
| if (build_keyframes_idx) { | |
| flv->datasize = file_size - flv->datastart_offset; | |
| avio_seek(pb, flv->datasize_offset, SEEK_SET); | |
| put_amf_double(pb, flv->datasize); | |
| } | |
| if (!(flv->flags & FLV_NO_METADATA)) { | |
| if (!(flv->flags & FLV_NO_DURATION_FILESIZE)) { | |
| /* update information */ | |
| if (avio_seek(pb, flv->duration_offset, SEEK_SET) < 0) { | |
| av_log(s, AV_LOG_WARNING, "Failed to update header with correct duration.\n"); | |
| } else { | |
| put_amf_double(pb, flv->duration / (double)1000); | |
| } | |
| if (avio_seek(pb, flv->filesize_offset, SEEK_SET) < 0) { | |
| av_log(s, AV_LOG_WARNING, "Failed to update header with correct filesize.\n"); | |
| } else { | |
| put_amf_double(pb, file_size); | |
| } | |
| } | |
| } | |
| return 0; | |
| } | |
| static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) | |
| { | |
| AVIOContext *pb = s->pb; | |
| AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar; | |
| FLVContext *flv = s->priv_data; | |
| unsigned ts; | |
| int size = pkt->size; | |
| uint8_t *data = NULL; | |
| uint8_t frametype = pkt->flags & AV_PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER; | |
| int flags = -1, flags_size, ret = 0; | |
| int64_t cur_offset = avio_tell(pb); | |
| if (par->codec_type == AVMEDIA_TYPE_AUDIO && !pkt->size) { | |
| av_log(s, AV_LOG_WARNING, "Empty audio Packet\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A || | |
| par->codec_id == AV_CODEC_ID_VP6 || par->codec_id == AV_CODEC_ID_AAC) | |
| flags_size = 2; | |
| else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4 || | |
| par->codec_id == AV_CODEC_ID_HEVC || par->codec_id == AV_CODEC_ID_AV1 || | |
| par->codec_id == AV_CODEC_ID_VP9) | |
| flags_size = 5; | |
| else | |
| flags_size = 1; | |
| if (par->codec_id == AV_CODEC_ID_HEVC && pkt->pts != pkt->dts) | |
| flags_size += 3; | |
| if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264 | |
| || par->codec_id == AV_CODEC_ID_MPEG4 || par->codec_id == AV_CODEC_ID_HEVC | |
| || par->codec_id == AV_CODEC_ID_AV1 || par->codec_id == AV_CODEC_ID_VP9) { | |
| size_t side_size; | |
| uint8_t *side = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size); | |
| if (side && side_size > 0 && (side_size != par->extradata_size || memcmp(side, par->extradata, side_size))) { | |
| ret = ff_alloc_extradata(par, side_size); | |
| if (ret < 0) | |
| return ret; | |
| memcpy(par->extradata, side, side_size); | |
| flv_write_codec_header(s, par, pkt->dts); | |
| } | |
| flv_write_metadata_packet(s, par, pkt->dts); | |
| } | |
| if (flv->delay == AV_NOPTS_VALUE) | |
| flv->delay = -pkt->dts; | |
| if (pkt->dts < -flv->delay) { | |
| av_log(s, AV_LOG_WARNING, | |
| "Packets are not in the proper order with respect to DTS\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4 || | |
| par->codec_id == AV_CODEC_ID_HEVC || par->codec_id == AV_CODEC_ID_AV1 || | |
| par->codec_id == AV_CODEC_ID_VP9) { | |
| if (pkt->pts == AV_NOPTS_VALUE) { | |
| av_log(s, AV_LOG_ERROR, "Packet is missing PTS\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| } | |
| ts = pkt->dts; | |
| if (s->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) { | |
| write_metadata(s, ts); | |
| s->event_flags &= ~AVSTREAM_EVENT_FLAG_METADATA_UPDATED; | |
| } | |
| avio_write_marker(pb, av_rescale(ts, AV_TIME_BASE, 1000), | |
| pkt->flags & AV_PKT_FLAG_KEY && (flv->video_par ? par->codec_type == AVMEDIA_TYPE_VIDEO : 1) ? AVIO_DATA_MARKER_SYNC_POINT : AVIO_DATA_MARKER_BOUNDARY_POINT); | |
| switch (par->codec_type) { | |
| case AVMEDIA_TYPE_VIDEO: | |
| avio_w8(pb, FLV_TAG_TYPE_VIDEO); | |
| flags = ff_codec_get_tag(flv_video_codec_ids, par->codec_id); | |
| flags |= frametype; | |
| break; | |
| case AVMEDIA_TYPE_AUDIO: | |
| flags = get_audio_flags(s, par); | |
| av_assert0(size); | |
| avio_w8(pb, FLV_TAG_TYPE_AUDIO); | |
| break; | |
| case AVMEDIA_TYPE_SUBTITLE: | |
| case AVMEDIA_TYPE_DATA: | |
| avio_w8(pb, FLV_TAG_TYPE_META); | |
| break; | |
| default: | |
| return AVERROR(EINVAL); | |
| } | |
| if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) { | |
| /* check if extradata looks like mp4 formatted */ | |
| if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1) | |
| if ((ret = ff_avc_parse_nal_units_buf(pkt->data, &data, &size)) < 0) | |
| return ret; | |
| } else if (par->codec_id == AV_CODEC_ID_HEVC) { | |
| if (par->extradata_size > 0 && *(uint8_t*)par->extradata != 1) | |
| if ((ret = ff_hevc_annexb2mp4_buf(pkt->data, &data, &size, 0, NULL)) < 0) | |
| return ret; | |
| } else if (par->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 && | |
| (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) { | |
| if (!s->streams[pkt->stream_index]->nb_frames) { | |
| av_log(s, AV_LOG_ERROR, "Malformed AAC bitstream detected: " | |
| "use the audio bitstream filter 'aac_adtstoasc' to fix it " | |
| "('-bsf:a aac_adtstoasc' option with ffmpeg)\n"); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| av_log(s, AV_LOG_WARNING, "aac bitstream error\n"); | |
| } | |
| /* check Speex packet duration */ | |
| if (par->codec_id == AV_CODEC_ID_SPEEX && ts - flv->last_ts[pkt->stream_index] > 160) | |
| av_log(s, AV_LOG_WARNING, "Warning: Speex stream has more than " | |
| "8 frames per packet. Adobe Flash " | |
| "Player cannot handle this!\n"); | |
| if (flv->last_ts[pkt->stream_index] < ts) | |
| flv->last_ts[pkt->stream_index] = ts; | |
| if (size + flags_size >= 1<<24) { | |
| av_log(s, AV_LOG_ERROR, "Too large packet with size %u >= %u\n", | |
| size + flags_size, 1<<24); | |
| ret = AVERROR(EINVAL); | |
| goto fail; | |
| } | |
| avio_wb24(pb, size + flags_size); | |
| put_timestamp(pb, ts); | |
| avio_wb24(pb, flv->reserved); | |
| if (par->codec_type == AVMEDIA_TYPE_DATA || | |
| par->codec_type == AVMEDIA_TYPE_SUBTITLE ) { | |
| int data_size; | |
| int64_t metadata_size_pos = avio_tell(pb); | |
| if (par->codec_id == AV_CODEC_ID_TEXT) { | |
| // legacy FFmpeg magic? | |
| avio_w8(pb, AMF_DATA_TYPE_STRING); | |
| put_amf_string(pb, "onTextData"); | |
| avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY); | |
| avio_wb32(pb, 2); | |
| put_amf_string(pb, "type"); | |
| avio_w8(pb, AMF_DATA_TYPE_STRING); | |
| put_amf_string(pb, "Text"); | |
| put_amf_string(pb, "text"); | |
| avio_w8(pb, AMF_DATA_TYPE_STRING); | |
| put_amf_string(pb, pkt->data); | |
| put_amf_string(pb, ""); | |
| avio_w8(pb, AMF_END_OF_OBJECT); | |
| } else { | |
| // just pass the metadata through | |
| avio_write(pb, data ? data : pkt->data, size); | |
| } | |
| /* write total size of tag */ | |
| data_size = avio_tell(pb) - metadata_size_pos; | |
| avio_seek(pb, metadata_size_pos - 10, SEEK_SET); | |
| avio_wb24(pb, data_size); | |
| avio_seek(pb, data_size + 10 - 3, SEEK_CUR); | |
| avio_wb32(pb, data_size + 11); | |
| } else { | |
| av_assert1(flags>=0); | |
| if (par->codec_id == AV_CODEC_ID_HEVC) { | |
| int pkttype = (pkt->pts != pkt->dts) ? PacketTypeCodedFrames : PacketTypeCodedFramesX; | |
| avio_w8(pb, FLV_IS_EX_HEADER | pkttype | frametype); // ExVideoTagHeader mode with PacketTypeCodedFrames(X) | |
| avio_write(pb, "hvc1", 4); | |
| if (pkttype == PacketTypeCodedFrames) | |
| avio_wb24(pb, pkt->pts - pkt->dts); | |
| } else if (par->codec_id == AV_CODEC_ID_AV1 || par->codec_id == AV_CODEC_ID_VP9) { | |
| avio_w8(pb, FLV_IS_EX_HEADER | PacketTypeCodedFrames | frametype); | |
| avio_write(pb, par->codec_id == AV_CODEC_ID_AV1 ? "av01" : "vp09", 4); | |
| } else { | |
| avio_w8(pb, flags); | |
| } | |
| if (par->codec_id == AV_CODEC_ID_VP6) | |
| avio_w8(pb,0); | |
| if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A) { | |
| if (par->extradata_size) | |
| avio_w8(pb, par->extradata[0]); | |
| else | |
| avio_w8(pb, ((FFALIGN(par->width, 16) - par->width) << 4) | | |
| (FFALIGN(par->height, 16) - par->height)); | |
| } else if (par->codec_id == AV_CODEC_ID_AAC) | |
| avio_w8(pb, 1); // AAC raw | |
| else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) { | |
| avio_w8(pb, 1); // AVC NALU | |
| avio_wb24(pb, pkt->pts - pkt->dts); | |
| } | |
| avio_write(pb, data ? data : pkt->data, size); | |
| avio_wb32(pb, size + flags_size + 11); // previous tag size | |
| flv->duration = FFMAX(flv->duration, | |
| pkt->pts + flv->delay + pkt->duration); | |
| } | |
| if (flv->flags & FLV_ADD_KEYFRAME_INDEX) { | |
| switch (par->codec_type) { | |
| case AVMEDIA_TYPE_VIDEO: | |
| flv->videosize += (avio_tell(pb) - cur_offset); | |
| flv->lasttimestamp = pkt->dts / 1000.0; | |
| if (pkt->flags & AV_PKT_FLAG_KEY) { | |
| flv->lastkeyframetimestamp = flv->lasttimestamp; | |
| flv->lastkeyframelocation = cur_offset; | |
| ret = flv_append_keyframe_info(s, flv, flv->lasttimestamp, cur_offset); | |
| if (ret < 0) | |
| goto fail; | |
| } | |
| break; | |
| case AVMEDIA_TYPE_AUDIO: | |
| flv->audiosize += (avio_tell(pb) - cur_offset); | |
| break; | |
| default: | |
| av_log(s, AV_LOG_WARNING, "par->codec_type is type = [%d]\n", par->codec_type); | |
| break; | |
| } | |
| } | |
| fail: | |
| av_free(data); | |
| return ret; | |
| } | |
| static int flv_check_bitstream(AVFormatContext *s, AVStream *st, | |
| const AVPacket *pkt) | |
| { | |
| if (st->codecpar->codec_id == AV_CODEC_ID_AAC) { | |
| if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) | |
| return ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL); | |
| } | |
| if (!st->codecpar->extradata_size && | |
| (st->codecpar->codec_id == AV_CODEC_ID_H264 || | |
| st->codecpar->codec_id == AV_CODEC_ID_HEVC || | |
| st->codecpar->codec_id == AV_CODEC_ID_AV1 || | |
| st->codecpar->codec_id == AV_CODEC_ID_MPEG4)) | |
| return ff_stream_add_bitstream_filter(st, "extract_extradata", NULL); | |
| return 1; | |
| } | |
| static void flv_deinit(AVFormatContext *s) | |
| { | |
| FLVContext *flv = s->priv_data; | |
| FLVFileposition *filepos = flv->head_filepositions; | |
| while (filepos) { | |
| FLVFileposition *next = filepos->next; | |
| av_free(filepos); | |
| filepos = next; | |
| } | |
| flv->filepositions = flv->head_filepositions = NULL; | |
| flv->filepositions_count = 0; | |
| } | |
| static const AVOption options[] = { | |
| { "flvflags", "FLV muxer flags", offsetof(FLVContext, flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "flvflags" }, | |
| { "aac_seq_header_detect", "Put AAC sequence header based on stream data", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_AAC_SEQ_HEADER_DETECT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "flvflags" }, | |
| { "no_sequence_end", "disable sequence end for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_SEQUENCE_END}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "flvflags" }, | |
| { "no_metadata", "disable metadata for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_METADATA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "flvflags" }, | |
| { "no_duration_filesize", "disable duration and filesize zero value metadata for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_DURATION_FILESIZE}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "flvflags" }, | |
| { "add_keyframe_index", "Add keyframe index metadata", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_ADD_KEYFRAME_INDEX}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "flvflags" }, | |
| { NULL }, | |
| }; | |
| static const AVClass flv_muxer_class = { | |
| .class_name = "flv muxer", | |
| .item_name = av_default_item_name, | |
| .option = options, | |
| .version = LIBAVUTIL_VERSION_INT, | |
| }; | |
| const FFOutputFormat ff_flv_muxer = { | |
| .p.name = "flv", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"), | |
| .p.mime_type = "video/x-flv", | |
| .p.extensions = "flv", | |
| .priv_data_size = sizeof(FLVContext), | |
| .p.audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_ADPCM_SWF, | |
| .p.video_codec = AV_CODEC_ID_FLV1, | |
| .init = flv_init, | |
| .write_header = flv_write_header, | |
| .write_packet = flv_write_packet, | |
| .write_trailer = flv_write_trailer, | |
| .deinit = flv_deinit, | |
| .check_bitstream= flv_check_bitstream, | |
| .p.codec_tag = (const AVCodecTag* const []) { | |
| flv_video_codec_ids, flv_audio_codec_ids, 0 | |
| }, | |
| .p.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | | |
| AVFMT_TS_NONSTRICT, | |
| .p.priv_class = &flv_muxer_class, | |
| }; |