/*
- * FLV encoder.
+ * FLV muxer
* Copyright (c) 2003 The FFmpeg Project.
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
+#include "flv.h"
#undef NDEBUG
#include <assert.h>
int hasAudio;
int hasVideo;
int reserved;
+ offset_t duration_offset;
+ offset_t filesize_offset;
+ int64_t duration;
} FLVContext;
static int get_audio_flags(AVCodecContext *enc){
- int flags = (enc->bits_per_sample == 16) ? 0x2 : 0x0;
+ int flags = (enc->bits_per_sample == 16) ? FLV_SAMPLESSIZE_16BIT : FLV_SAMPLESSIZE_8BIT;
switch (enc->sample_rate) {
case 44100:
- flags |= 0x0C;
+ flags |= FLV_SAMPLERATE_44100HZ;
break;
case 22050:
- flags |= 0x08;
+ flags |= FLV_SAMPLERATE_22050HZ;
break;
case 11025:
- flags |= 0x04;
+ flags |= FLV_SAMPLERATE_11025HZ;
break;
case 8000: //nellymoser only
case 5512: //not mp3
- flags |= 0x00;
+ flags |= FLV_SAMPLERATE_SPECIAL;
break;
default:
av_log(enc, AV_LOG_ERROR, "flv doesnt support that sample rate, choose from (44100, 22050, 11025)\n");
}
if (enc->channels > 1) {
- flags |= 0x01;
+ flags |= FLV_STEREO;
}
switch(enc->codec_id){
case CODEC_ID_MP3:
- flags |= 0x20 | 0x2;
+ flags |= FLV_CODECID_MP3 | FLV_SAMPLESSIZE_16BIT;
break;
case CODEC_ID_PCM_S8:
- break;
+ flags |= FLV_CODECID_PCM_BE | FLV_SAMPLESSIZE_8BIT;
+ break;
case CODEC_ID_PCM_S16BE:
- flags |= 0x60 | 0x2;
- break;
+ flags |= FLV_CODECID_PCM_BE | FLV_SAMPLESSIZE_16BIT;
+ break;
case CODEC_ID_PCM_S16LE:
- flags |= 0x2;
- break;
+ flags |= FLV_CODECID_PCM_LE | FLV_SAMPLESSIZE_16BIT;
+ break;
case CODEC_ID_ADPCM_SWF:
- flags |= 0x10;
- break;
+ flags |= FLV_CODECID_ADPCM;
+ break;
case 0:
flags |= enc->codec_tag<<4;
break;
return flags;
}
+static void put_amf_string(ByteIOContext *pb, const char *str)
+{
+ size_t len = strlen(str);
+ put_be16(pb, len);
+ put_buffer(pb, str, len);
+}
+
+static void put_amf_double(ByteIOContext *pb, double d)
+{
+ put_byte(pb, AMF_DATA_TYPE_NUMBER);
+ put_be64(pb, av_dbl2int(d));
+}
+
static int flv_write_header(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
FLVContext *flv = s->priv_data;
- int i;
+ int i, width, height, samplerate;
+ double framerate = 0.0;
+ int metadata_size_pos, data_size;
flv->hasAudio = 0;
flv->hasVideo = 0;
for(i=0; i<s->nb_streams; i++){
AVCodecContext *enc = s->streams[i]->codec;
+ if (enc->codec_type == CODEC_TYPE_VIDEO) {
+ width = enc->width;
+ height = enc->height;
+ if (s->streams[i]->r_frame_rate.den && s->streams[i]->r_frame_rate.num) {
+ framerate = av_q2d(s->streams[i]->r_frame_rate);
+ } else {
+ framerate = 1/av_q2d(s->streams[i]->codec->time_base);
+ }
+ flv->hasVideo=1;
+ } else {
+ flv->hasAudio=1;
+ samplerate = enc->sample_rate;
+ }
av_set_pts_info(s->streams[i], 24, 1, 1000); /* 24 bit pts in ms */
if(enc->codec_tag == 5){
put_byte(pb,8); // message type
return -1;
}
+ /* write meta_tag */
+ put_byte(pb, 18); // tag type META
+ metadata_size_pos= url_ftell(pb);
+ put_be24(pb, 0); // size of data part (sum of all parts below)
+ put_be24(pb, 0); // time stamp
+ put_be32(pb, 0); // reserved
+
+ /* now data of data_size size */
+
+ /* first event name as a string */
+ put_byte(pb, AMF_DATA_TYPE_STRING);
+ put_amf_string(pb, "onMetaData"); // 12 bytes
+
+ /* mixed array (hash) with size and string/type/data tuples */
+ put_byte(pb, AMF_DATA_TYPE_MIXEDARRAY);
+ put_be32(pb, 4*flv->hasVideo + flv->hasAudio + 2); // +2 for duration and file size
+
+ put_amf_string(pb, "duration");
+ flv->duration_offset= url_ftell(pb);
+ put_amf_double(pb, 0); // delayed write
+
+ if(flv->hasVideo){
+ put_amf_string(pb, "width");
+ put_amf_double(pb, width);
+
+ put_amf_string(pb, "height");
+ put_amf_double(pb, height);
+
+ put_amf_string(pb, "videodatarate");
+ put_amf_double(pb, s->bit_rate / 1024.0);
+
+ put_amf_string(pb, "framerate");
+ put_amf_double(pb, framerate);
+ }
+
+ if(flv->hasAudio){
+ put_amf_string(pb, "audiosamplerate");
+ put_amf_double(pb, samplerate);
+ }
+
+ put_amf_string(pb, "filesize");
+ flv->filesize_offset= url_ftell(pb);
+ put_amf_double(pb, 0); // delayed write
+
+ put_amf_string(pb, "");
+ put_byte(pb, AMF_END_OF_OBJECT);
+
+ /* write total size of tag */
+ data_size= url_ftell(pb) - metadata_size_pos - 10;
+ url_fseek(pb, metadata_size_pos, SEEK_SET);
+ put_be24(pb, data_size);
+ url_fseek(pb, data_size + 10 - 3, SEEK_CUR);
+ put_be32(pb, data_size + 11);
+
return 0;
}
FLVContext *flv = s->priv_data;
file_size = url_ftell(pb);
- flags |= flv->hasAudio ? 4 : 0;
- flags |= flv->hasVideo ? 1 : 0;
+ flags |= flv->hasAudio ? FLV_HEADER_FLAG_HASAUDIO : 0;
+ flags |= flv->hasVideo ? FLV_HEADER_FLAG_HASVIDEO : 0;
url_fseek(pb, 4, SEEK_SET);
put_byte(pb,flags);
+
+ /* update informations */
+ url_fseek(pb, flv->duration_offset, SEEK_SET);
+ put_amf_double(pb, flv->duration / (double)1000);
+ url_fseek(pb, flv->filesize_offset, SEEK_SET);
+ put_amf_double(pb, file_size);
+
url_fseek(pb, file_size, SEEK_SET);
return 0;
}
int size= pkt->size;
int flags;
-// av_log(s, AV_LOG_DEBUG, "type:%d pts: %lld size:%d\n", enc->codec_type, timestamp, size);
+// av_log(s, AV_LOG_DEBUG, "type:%d pts: %"PRId64" size:%d\n", enc->codec_type, timestamp, size);
if (enc->codec_type == CODEC_TYPE_VIDEO) {
- put_byte(pb, 9);
- flags = 2; // choose h263
- flags |= pkt->flags & PKT_FLAG_KEY ? 0x10 : 0x20; // add keyframe indicator
- flv->hasVideo = 1;
+ put_byte(pb, FLV_TAG_TYPE_VIDEO);
+ flags = FLV_CODECID_H263;
+ flags |= pkt->flags & PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER;
} else {
assert(enc->codec_type == CODEC_TYPE_AUDIO);
flags = get_audio_flags(enc);
assert(size);
- put_byte(pb, 8);
-
- // We got audio! Make sure we set this to the global flags on closure
- flv->hasAudio = 1;
+ put_byte(pb, FLV_TAG_TYPE_AUDIO);
}
put_be24(pb,size+1); // include flags
put_byte(pb,flags);
put_buffer(pb, pkt->data, size);
put_be32(pb,size+1+11); // previous tag size
+ flv->duration = pkt->pts + pkt->duration;
put_flush_packet(pb);
return 0;
}
-static AVOutputFormat flv_oformat = {
+AVOutputFormat flv_muxer = {
"flv",
"flv format",
"video/x-flv",
flv_write_packet,
flv_write_trailer,
};
-
-int flvenc_init(void)
-{
- av_register_output_format(&flv_oformat);
- return 0;
-}
projects / ffmpeg / blobdiff