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simplify, remove useless vars 

Originally committed as revision 13270 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2008-05-24 00:03:00 +00:00
parent fbabb0c277
commit 5366f15d05
1 changed files with 17 additions and 31 deletions
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48
libavformat/flvenc.c
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@ -44,8 +44,6 @@ static const AVCodecTag flv_audio_codec_ids[] = {
};
typedef struct FLVContext {
int hasAudio;
int hasVideo;
int reserved;
offset_t duration_offset;
offset_t filesize_offset;
@ -132,38 +130,26 @@ static int flv_write_header(AVFormatContext *s)
{
ByteIOContext *pb = s->pb;
FLVContext *flv = s->priv_data;
int i, width, height, samplerate, samplesize, channels, audiocodecid, videocodecid;
AVCodecContext *audio_enc = NULL, *video_enc = NULL;
int i;
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;
videocodecid = enc->codec_tag;
if(videocodecid == 0) {
video_enc = enc;
if(enc->codec_tag == 0) {
av_log(enc, AV_LOG_ERROR, "video codec not compatible with flv\n");
return -1;
}
} else {
flv->hasAudio=1;
samplerate = enc->sample_rate;
channels = enc->channels;
audiocodecid = enc->codec_tag;
samplesize = (enc->codec_id == CODEC_ID_PCM_S8) ? 8 : 16;
audio_enc = enc;
if(get_audio_flags(enc)<0)
return -1;
}
@ -171,8 +157,8 @@ static int flv_write_header(AVFormatContext *s)
}
put_tag(pb,"FLV");
put_byte(pb,1);
put_byte(pb, FLV_HEADER_FLAG_HASAUDIO * flv->hasAudio
+ FLV_HEADER_FLAG_HASVIDEO * flv->hasVideo);
put_byte(pb, FLV_HEADER_FLAG_HASAUDIO * !!audio_enc
+ FLV_HEADER_FLAG_HASVIDEO * !!video_enc);
put_be32(pb,9);
put_be32(pb,0);
@ -202,18 +188,18 @@ static int flv_write_header(AVFormatContext *s)
/* mixed array (hash) with size and string/type/data tuples */
put_byte(pb, AMF_DATA_TYPE_MIXEDARRAY);
put_be32(pb, 5*flv->hasVideo + 4*flv->hasAudio + 2); // +2 for duration and file size
put_be32(pb, 5*!!video_enc + 4*!!audio_enc + 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){
if(video_enc){
put_amf_string(pb, "width");
put_amf_double(pb, width);
put_amf_double(pb, video_enc->width);
put_amf_string(pb, "height");
put_amf_double(pb, height);
put_amf_double(pb, video_enc->height);
put_amf_string(pb, "videodatarate");
put_amf_double(pb, s->bit_rate / 1024.0);
@ -222,21 +208,21 @@ static int flv_write_header(AVFormatContext *s)
put_amf_double(pb, framerate);
put_amf_string(pb, "videocodecid");
put_amf_double(pb, videocodecid);
put_amf_double(pb, video_enc->codec_tag);
}
if(flv->hasAudio){
if(audio_enc){
put_amf_string(pb, "audiosamplerate");
put_amf_double(pb, samplerate);
put_amf_double(pb, audio_enc->sample_rate);
put_amf_string(pb, "audiosamplesize");
put_amf_double(pb, samplesize);
put_amf_double(pb, audio_enc->codec_id == CODEC_ID_PCM_S8 ? 8 : 16);
put_amf_string(pb, "stereo");
put_amf_bool(pb, (channels == 2));
put_amf_bool(pb, audio_enc->channels == 2);
put_amf_string(pb, "audiocodecid");
put_amf_double(pb, audiocodecid);
put_amf_double(pb, audio_enc->codec_tag);
}
put_amf_string(pb, "filesize");