diff options
Diffstat (limited to 'libavformat/flvenc.c')
| -rw-r--r-- | libavformat/flvenc.c | 726 |
1 files changed, 617 insertions, 109 deletions
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c index 00bd65cb58..899b07ea7b 100644 --- a/libavformat/flvenc.c +++ b/libavformat/flvenc.c @@ -1,41 +1,49 @@ /* * FLV muxer - * Copyright (c) 2003 The Libav Project + * Copyright (c) 2003 The FFmpeg Project * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * 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/mathematics.h" +#include "avio_internal.h" +#include "avio.h" #include "avc.h" #include "avformat.h" #include "flv.h" #include "internal.h" #include "metadata.h" +#include "libavutil/opt.h" +#include "libavcodec/put_bits.h" +#include "libavcodec/aacenctab.h" -#undef NDEBUG -#include <assert.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_NONE, 0 } @@ -55,17 +63,61 @@ static const AVCodecTag flv_audio_codec_ids[] = { { 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; + + int acurframeindex; + 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; } FLVContext; typedef struct FLVStreamContext { @@ -83,16 +135,24 @@ static int get_audio_flags(AVFormatContext *s, AVCodecParameters *par) 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 -1; + "FLV only supports wideband (16kHz) Speex audio\n"); + return AVERROR(EINVAL); } if (par->channels != 1) { - av_log(s, AV_LOG_ERROR, "flv only supports mono Speex audio\n"); - return -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; @@ -110,10 +170,11 @@ static int get_audio_flags(AVFormatContext *s, AVCodecParameters *par) break; } default: +error: av_log(s, AV_LOG_ERROR, - "flv does not support that sample rate, " - "choose from (44100, 22050, 11025).\n"); - return -1; + "FLV does not support sample rate %d, " + "choose from (44100, 22050, 11025)\n", par->sample_rate); + return AVERROR(EINVAL); } } @@ -154,8 +215,9 @@ static int get_audio_flags(AVFormatContext *s, AVCodecParameters *par) flags |= par->codec_tag << 4; break; default: - av_log(s, AV_LOG_ERROR, "codec not compatible with flv\n"); - return -1; + 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; @@ -187,6 +249,17 @@ static void put_amf_double(AVIOContext *pb, double d) 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); @@ -197,13 +270,14 @@ 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_size_pos, data_size, metadata_count_pos; + int64_t metadata_count_pos; AVDictionaryEntry *tag = NULL; /* write meta_tag */ - avio_w8(pb, 18); // tag type META - metadata_size_pos = avio_tell(pb); + 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) avio_wb24(pb, ts); // timestamp avio_wb32(pb, 0); // reserved @@ -219,16 +293,18 @@ static void write_metadata(AVFormatContext *s, unsigned int ts) metadata_count_pos = avio_tell(pb); metadata_count = 4 * !!flv->video_par + 5 * !!flv->audio_par + - 1 * !!flv->data_par + - 2; // +2 for duration and file size - + 1 * !!flv->data_par; + if (write_duration_filesize) { + metadata_count += 2; // +2 for duration and file size + } avio_wb32(pb, metadata_count); - 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 (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"); @@ -272,30 +348,125 @@ static void write_metadata(AVFormatContext *s, unsigned int ts) put_amf_double(pb, 0.0); } + ff_standardize_creation_time(s); while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) { + 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++; } - put_amf_string(pb, "filesize"); - flv->filesize_offset = avio_tell(pb); - put_amf_double(pb, 0); // delayed write + 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->acurframeindex = 0; + 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 */ - data_size = avio_tell(pb) - metadata_size_pos - 10; + 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, metadata_size_pos, SEEK_SET); - avio_wb24(pb, data_size); - avio_skip(pb, data_size + 10 - 3); - avio_wb32(pb, data_size + 11); + 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 int unsupported_codec(AVFormatContext *s, @@ -309,12 +480,181 @@ static int unsupported_codec(AVFormatContext *s, return AVERROR(ENOSYS); } +static void flv_write_codec_header(AVFormatContext* s, AVCodecParameters* par) { + 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) { + 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 + avio_wb24(pb, 0); // ts + avio_w8(pb, 0); // ts ext + 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 = flv->audio_par->channels + - (flv->audio_par->channels == 8 ? 1 : 0); + uint8_t data[2]; + + for (samplerate_index = 0; samplerate_index < 16; + samplerate_index++) + if (flv->audio_par->sample_rate + == mpeg4audio_sample_rates[samplerate_index]) + break; + + init_put_bits(&pbc, data, sizeof(data)); + put_bits(&pbc, 5, flv->audio_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 { + avio_w8(pb, par->codec_tag | FLV_FRAME_KEY); // flags + avio_w8(pb, 0); // AVC sequence header + avio_wb24(pb, 0); // composition time + 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 = 0; + int n = 0; + int64_t metadata_size = 0; + FLVContext *flv = s->priv_data; + int64_t pos, pos_end = avio_tell(s->pb); + uint8_t *buf, *read_buf[2]; + int read_buf_id = 0; + int read_size[2]; + AVIOContext *read_pb; + + 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; + + buf = av_malloc_array(metadata_size, 2); + if (!buf) { + return AVERROR(ENOMEM); + } + read_buf[0] = buf; + read_buf[1] = buf + metadata_size; + + 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, SEEK_SET); + avio_wb32(s->pb, flv->metadata_totalsize + 11 + metadata_size); + avio_seek(s->pb, pos_end, SEEK_SET); + + /* Shift the data: the AVIO context of the output can only be used for + * writing, so we re-open the same output, but for reading. It also avoids + * a read/seek/write/seek back and forth. */ + avio_flush(s->pb); + ret = s->io_open(s, &read_pb, s->filename, AVIO_FLAG_READ, NULL); + if (ret < 0) { + av_log(s, AV_LOG_ERROR, "Unable to re-open %s output file for " + "the second pass (add_keyframe_index)\n", s->filename); + goto end; + } + + /* mark the end of the shift to up to the last data we wrote, and get ready + * for writing */ + pos_end = avio_tell(s->pb); + avio_seek(s->pb, flv->keyframes_info_offset + metadata_size, SEEK_SET); + + /* start reading at where the keyframe index information will be placed */ + avio_seek(read_pb, flv->keyframes_info_offset, SEEK_SET); + pos = avio_tell(read_pb); + +#define READ_BLOCK do { \ + read_size[read_buf_id] = avio_read(read_pb, read_buf[read_buf_id], metadata_size); \ + read_buf_id ^= 1; \ +} while (0) + + /* shift data by chunk of at most keyframe *filepositions* and *times* size */ + READ_BLOCK; + do { + READ_BLOCK; + n = read_size[read_buf_id]; + if (n < 0) + break; + avio_write(s->pb, read_buf[read_buf_id], n); + pos += n; + } while (pos <= pos_end); + + ff_format_io_close(s, &read_pb); + +end: + av_free(buf); + return ret; +} + + static int flv_write_header(AVFormatContext *s) { int i; AVIOContext *pb = s->pb; FLVContext *flv = s->priv_data; - int64_t data_size; for (i = 0; i < s->nb_streams; i++) { AVCodecParameters *par = s->streams[i]->codecpar; @@ -333,6 +673,22 @@ static int flv_write_header(AVFormatContext *s) 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) { @@ -343,15 +699,27 @@ static int flv_write_header(AVFormatContext *s) 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) + 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 not compatible with flv\n"); - return -1; + 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 */ @@ -381,70 +749,121 @@ static int flv_write_header(AVFormatContext *s) flv->reserved = 5; } - write_metadata(s, 0); + if (flv->flags & FLV_NO_METADATA) { + pb->seekable = 0; + } else { + write_metadata(s, 0); + } for (i = 0; i < s->nb_streams; i++) { - AVCodecParameters *par = s->streams[i]->codecpar; - if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264) { - 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 - avio_wb24(pb, 0); // ts - avio_w8(pb, 0); // ts ext - 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 - avio_write(pb, par->extradata, par->extradata_size); - } else { - avio_w8(pb, par->codec_tag | FLV_FRAME_KEY); // flags - avio_w8(pb, 0); // AVC sequence header - avio_wb24(pb, 0); // composition time - 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 - } + flv_write_codec_header(s, s->streams[i]->codecpar); } + 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 i; + int build_keyframes_idx = flv->flags & FLV_ADD_KEYFRAME_INDEX; + int i, res; + int64_t cur_pos = avio_tell(s->pb); - /* Add EOS tag */ - for (i = 0; i < s->nb_streams; i++) { - AVCodecParameters *par = s->streams[i]->codecpar; - FLVStreamContext *sc = s->streams[i]->priv_data; - if (par->codec_type == AVMEDIA_TYPE_VIDEO && - par->codec_id == AV_CODEC_ID_H264) - put_avc_eos_tag(pb, sc->last_ts); + if (build_keyframes_idx) { + FLVFileposition *newflv_posinfo, *p; + + 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); + } + + newflv_posinfo = flv->head_filepositions; + while (newflv_posinfo) { + p = newflv_posinfo->next; + if (p) { + newflv_posinfo->next = p->next; + av_free(p); + p = NULL; + } else { + av_free(newflv_posinfo); + newflv_posinfo = NULL; + } + } + + 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; + FLVStreamContext *sc = s->streams[i]->priv_data; + if (par->codec_type == AVMEDIA_TYPE_VIDEO && + (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4)) + put_avc_eos_tag(pb, sc->last_ts); + } } file_size = avio_tell(pb); - /* 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); + 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); + } + } + } - avio_seek(pb, file_size, SEEK_SET); return 0; } @@ -457,16 +876,34 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) unsigned ts; int size = pkt->size; uint8_t *data = NULL; - int flags = 0, flags_size; + int flags = -1, flags_size, ret; + int64_t cur_offset = avio_tell(pb); if (par->codec_id == AV_CODEC_ID_VP6F || par->codec_id == AV_CODEC_ID_VP6A || - par->codec_id == AV_CODEC_ID_AAC) + 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) + else if (par->codec_id == AV_CODEC_ID_H264 || par->codec_id == AV_CODEC_ID_MPEG4) flags_size = 5; else flags_size = 1; + if (par->codec_id == AV_CODEC_ID_AAC || par->codec_id == AV_CODEC_ID_H264 + || par->codec_id == AV_CODEC_ID_MPEG4) { + int side_size = 0; + 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))) { + av_free(par->extradata); + par->extradata = av_mallocz(side_size + AV_INPUT_BUFFER_PADDING_SIZE); + if (!par->extradata) { + par->extradata_size = 0; + return AVERROR(ENOMEM); + } + memcpy(par->extradata, side, side_size); + par->extradata_size = side_size; + flv_write_codec_header(s, par); + } + } + if (flv->delay == AV_NOPTS_VALUE) flv->delay = -pkt->dts; @@ -476,7 +913,7 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) return AVERROR(EINVAL); } - ts = pkt->dts + flv->delay; // add delay to force positive dts + ts = pkt->dts; if (s->event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED) { write_metadata(s, ts); @@ -497,10 +934,11 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) case AVMEDIA_TYPE_AUDIO: flags = get_audio_flags(s, par); - assert(size); + 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; @@ -508,11 +946,21 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) return AVERROR(EINVAL); } - if (par->codec_id == AV_CODEC_ID_H264) - /* check if extradata looks like MP4 */ + 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 (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0) - return -1; + if ((ret = ff_avc_parse_nal_units_buf(pkt->data, &data, &size)) < 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 - sc->last_ts > 160) @@ -523,26 +971,39 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) if (sc->last_ts < ts) sc->last_ts = 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); + return AVERROR(EINVAL); + } + avio_wb24(pb, size + flags_size); - avio_wb24(pb, ts); + avio_wb24(pb, ts & 0xFFFFFF); avio_w8(pb, (ts >> 24) & 0x7F); // timestamps are 32 bits _signed_ avio_wb24(pb, flv->reserved); - if (par->codec_type == AVMEDIA_TYPE_DATA) { + if (par->codec_type == AVMEDIA_TYPE_DATA || + par->codec_type == AVMEDIA_TYPE_SUBTITLE ) { int data_size; int64_t metadata_size_pos = avio_tell(pb); - 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); + 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); @@ -550,7 +1011,10 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) avio_seek(pb, data_size + 10 - 3, SEEK_CUR); avio_wb32(pb, data_size + 11); } else { + av_assert1(flags>=0); 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]); @@ -559,7 +1023,7 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) (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) { + 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); } @@ -571,11 +1035,54 @@ static int flv_write_packet(AVFormatContext *s, AVPacket *pkt) 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 = flv->acurframeindex / flv->framerate; + if (pkt->flags & AV_PKT_FLAG_KEY) { + double ts = flv->acurframeindex / flv->framerate; + int64_t pos = cur_offset; + + flv->lastkeyframetimestamp = flv->acurframeindex / flv->framerate; + flv->lastkeyframelocation = pos; + flv_append_keyframe_info(s, flv, ts, pos); + } + flv->acurframeindex++; + 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; + } + } + av_free(data); return pb->error; } +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, "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, "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, "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, "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, "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, "flvflags" }, + { NULL }, +}; + +static const AVClass flv_muxer_class = { + .class_name = "flv muxer", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + AVOutputFormat ff_flv_muxer = { .name = "flv", .long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"), @@ -592,4 +1099,5 @@ AVOutputFormat ff_flv_muxer = { }, .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT, + .priv_class = &flv_muxer_class, }; |