/*
* FLV muxer
- * Copyright (c) 2003 The FFmpeg Project
+ * Copyright (c) 2003 The Libav Project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/intfloat.h"
#include "avformat.h"
#include "flv.h"
#include "internal.h"
#include "avc.h"
#include "metadata.h"
+#include "libavutil/dict.h"
#undef NDEBUG
#include <assert.h>
int64_t duration_offset;
int64_t filesize_offset;
int64_t duration;
- int delay; ///< first dts delay for AVC
- int64_t last_video_ts;
+ int64_t delay; ///< first dts delay (needed for AVC & Speex)
} FLVContext;
+typedef struct FLVStreamContext {
+ int64_t last_ts; ///< last timestamp for each stream
+} FLVStreamContext;
+
static int get_audio_flags(AVCodecContext *enc){
int flags = (enc->bits_per_coded_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
av_log(enc, AV_LOG_ERROR, "flv only supports mono Speex audio\n");
return -1;
}
- if (enc->frame_size / 320 > 8) {
- av_log(enc, AV_LOG_WARNING, "Warning: Speex stream has more than "
- "8 frames per packet. Adobe Flash "
- "Player cannot handle this!\n");
- }
return FLV_CODECID_SPEEX | FLV_SAMPLERATE_11025HZ | FLV_SAMPLESSIZE_16BIT;
} else {
switch (enc->sample_rate) {
case 11025:
flags |= FLV_SAMPLERATE_11025HZ;
break;
+ case 16000: //nellymoser only
case 8000: //nellymoser only
case 5512: //not mp3
if(enc->codec_id != CODEC_ID_MP3){
case CODEC_ID_NELLYMOSER:
if (enc->sample_rate == 8000) {
flags |= FLV_CODECID_NELLYMOSER_8KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
+ } else if (enc->sample_rate == 16000) {
+ flags |= FLV_CODECID_NELLYMOSER_16KHZ_MONO | FLV_SAMPLESSIZE_16BIT;
} else {
flags |= FLV_CODECID_NELLYMOSER | FLV_SAMPLESSIZE_16BIT;
}
static void put_amf_double(AVIOContext *pb, double d)
{
avio_w8(pb, AMF_DATA_TYPE_NUMBER);
- avio_wb64(pb, av_dbl2int(d));
+ avio_wb64(pb, av_double2int(d));
}
static void put_amf_bool(AVIOContext *pb, int b) {
AVIOContext *pb = s->pb;
FLVContext *flv = s->priv_data;
AVCodecContext *audio_enc = NULL, *video_enc = NULL;
- int i;
+ int i, metadata_count = 0;
double framerate = 0.0;
- int metadata_size_pos, data_size;
- AVMetadataTag *tag = NULL;
+ int64_t metadata_size_pos, data_size, metadata_count_pos;
+ AVDictionaryEntry *tag = NULL;
for(i=0; i<s->nb_streams; i++){
AVCodecContext *enc = s->streams[i]->codec;
+ FLVStreamContext *sc;
if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
if (s->streams[i]->r_frame_rate.den && s->streams[i]->r_frame_rate.num) {
framerate = av_q2d(s->streams[i]->r_frame_rate);
if(get_audio_flags(enc)<0)
return -1;
}
- av_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */
+ avpriv_set_pts_info(s->streams[i], 32, 1, 1000); /* 32 bit pts in ms */
+
+ sc = av_mallocz(sizeof(FLVStreamContext));
+ if (!sc)
+ return AVERROR(ENOMEM);
+ s->streams[i]->priv_data = sc;
+ sc->last_ts = -1;
}
+ flv->delay = AV_NOPTS_VALUE;
+
avio_write(pb, "FLV", 3);
avio_w8(pb,1);
avio_w8(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc
}
}
- flv->last_video_ts = -1;
-
/* write meta_tag */
avio_w8(pb, 18); // tag type META
- metadata_size_pos= url_ftell(pb);
+ metadata_size_pos= avio_tell(pb);
avio_wb24(pb, 0); // size of data part (sum of all parts below)
avio_wb24(pb, 0); // time stamp
avio_wb32(pb, 0); // reserved
/* mixed array (hash) with size and string/type/data tuples */
avio_w8(pb, AMF_DATA_TYPE_MIXEDARRAY);
- avio_wb32(pb, 5*!!video_enc + 5*!!audio_enc + 2); // +2 for duration and file size
+ metadata_count_pos = avio_tell(pb);
+ metadata_count = 5*!!video_enc + 5*!!audio_enc + 2; // +2 for duration and file size
+ avio_wb32(pb, metadata_count);
put_amf_string(pb, "duration");
- flv->duration_offset= url_ftell(pb);
+ flv->duration_offset= avio_tell(pb);
put_amf_double(pb, s->duration / AV_TIME_BASE); // fill in the guessed duration, it'll be corrected later if incorrect
if(video_enc){
put_amf_double(pb, audio_enc->codec_tag);
}
- while ((tag = av_metadata_get(s->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
+ while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
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= url_ftell(pb);
+ flv->filesize_offset= avio_tell(pb);
put_amf_double(pb, 0); // delayed write
put_amf_string(pb, "");
avio_w8(pb, AMF_END_OF_OBJECT);
/* write total size of tag */
- data_size= url_ftell(pb) - metadata_size_pos - 10;
+ data_size= avio_tell(pb) - 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_seek(pb, data_size + 10 - 3, SEEK_CUR);
+ avio_skip(pb, data_size + 10 - 3);
avio_wb32(pb, data_size + 11);
for (i = 0; i < s->nb_streams; i++) {
avio_wb24(pb, 0); // ts
avio_w8(pb, 0); // ts ext
avio_wb24(pb, 0); // streamid
- pos = url_ftell(pb);
+ pos = avio_tell(pb);
if (enc->codec_id == CODEC_ID_AAC) {
avio_w8(pb, get_audio_flags(enc));
avio_w8(pb, 0); // AAC sequence header
avio_wb24(pb, 0); // composition time
ff_isom_write_avcc(pb, enc->extradata, enc->extradata_size);
}
- data_size = url_ftell(pb) - pos;
+ data_size = avio_tell(pb) - pos;
avio_seek(pb, -data_size - 10, SEEK_CUR);
avio_wb24(pb, data_size);
- avio_seek(pb, data_size + 10 - 3, SEEK_CUR);
+ avio_skip(pb, data_size + 10 - 3);
avio_wb32(pb, data_size + 11); // previous tag size
}
}
/* Add EOS tag */
for (i = 0; i < s->nb_streams; i++) {
AVCodecContext *enc = s->streams[i]->codec;
+ FLVStreamContext *sc = s->streams[i]->priv_data;
if (enc->codec_type == AVMEDIA_TYPE_VIDEO &&
enc->codec_id == CODEC_ID_H264) {
- put_avc_eos_tag(pb, flv->last_video_ts);
+ put_avc_eos_tag(pb, sc->last_ts);
}
}
- file_size = url_ftell(pb);
+ file_size = avio_tell(pb);
- /* update informations */
+ /* update information */
avio_seek(pb, flv->duration_offset, SEEK_SET);
put_amf_double(pb, flv->duration / (double)1000);
avio_seek(pb, flv->filesize_offset, SEEK_SET);
AVIOContext *pb = s->pb;
AVCodecContext *enc = s->streams[pkt->stream_index]->codec;
FLVContext *flv = s->priv_data;
+ FLVStreamContext *sc = s->streams[pkt->stream_index]->priv_data;
unsigned ts;
int size= pkt->size;
uint8_t *data= NULL;
}
if (enc->codec_id == CODEC_ID_H264) {
- /* check if extradata looks like mp4 formated */
+ /* check if extradata looks like MP4 */
if (enc->extradata_size > 0 && *(uint8_t*)enc->extradata != 1) {
if (ff_avc_parse_nal_units_buf(pkt->data, &data, &size) < 0)
return -1;
}
- if (!flv->delay && pkt->dts < 0)
- flv->delay = -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);
}
ts = pkt->dts + flv->delay; // add delay to force positive dts
- if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
- if (flv->last_video_ts < ts)
- flv->last_video_ts = ts;
+
+ /* check Speex packet duration */
+ if (enc->codec_id == CODEC_ID_SPEEX && ts - sc->last_ts > 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 (sc->last_ts < ts)
+ sc->last_ts = ts;
+
avio_wb24(pb,size + flags_size);
avio_wb24(pb,ts);
avio_w8(pb,(ts >> 24) & 0x7F); // timestamps are 32bits _signed_
avio_wb32(pb,size+flags_size+11); // previous tag size
flv->duration = FFMAX(flv->duration, pkt->pts + flv->delay + pkt->duration);
- put_flush_packet(pb);
+ avio_flush(pb);
av_free(data);
- return 0;
+ return pb->error;
}
AVOutputFormat ff_flv_muxer = {
- "flv",
- NULL_IF_CONFIG_SMALL("FLV format"),
- "video/x-flv",
- "flv",
- sizeof(FLVContext),
+ .name = "flv",
+ .long_name = NULL_IF_CONFIG_SMALL("FLV format"),
+ .mime_type = "video/x-flv",
+ .extensions = "flv",
+ .priv_data_size = sizeof(FLVContext),
#if CONFIG_LIBMP3LAME
- CODEC_ID_MP3,
+ .audio_codec = CODEC_ID_MP3,
#else // CONFIG_LIBMP3LAME
- CODEC_ID_ADPCM_SWF,
+ .audio_codec = CODEC_ID_ADPCM_SWF,
#endif // CONFIG_LIBMP3LAME
- CODEC_ID_FLV1,
- flv_write_header,
- flv_write_packet,
- flv_write_trailer,
+ .video_codec = CODEC_ID_FLV1,
+ .write_header = flv_write_header,
+ .write_packet = flv_write_packet,
+ .write_trailer = flv_write_trailer,
.codec_tag= (const AVCodecTag* const []){flv_video_codec_ids, flv_audio_codec_ids, 0},
.flags= AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
};
projects / ffmpeg / blobdiff