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simplify, use pointer to codec context in struct instead of only id 

Originally committed as revision 13476 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2008-05-27 22:31:09 +00:00
parent 6138ed777d
commit 92f76fbf23
1 changed files with 23 additions and 31 deletions
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54
libavformat/swfenc.c
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@ -174,7 +174,6 @@ static int swf_write_header(AVFormatContext *s)
{
SWFContext *swf = s->priv_data;
ByteIOContext *pb = s->pb;
AVCodecContext *enc, *audio_enc, *video_enc;
PutBitContext p;
uint8_t buf1[256];
int i, width, height, rate, rate_base;
@ -184,17 +183,15 @@ static int swf_write_header(AVFormatContext *s)
swf->swf_frame_number = 0;
swf->video_frame_number = 0;
video_enc = NULL;
audio_enc = NULL;
for(i=0;i<s->nb_streams;i++) {
enc = s->streams[i]->codec;
AVCodecContext *enc = s->streams[i]->codec;
if (enc->codec_type == CODEC_TYPE_AUDIO) {
if (enc->codec_id == CODEC_ID_MP3) {
if (!enc->frame_size) {
av_log(s, AV_LOG_ERROR, "audio frame size not set\n");
return -1;
}
audio_enc = enc;
swf->audio_enc = enc;
av_fifo_init(&swf->audio_fifo, AUDIO_FIFO_SIZE);
} else {
av_log(s, AV_LOG_ERROR, "SWF muxer only supports MP3\n");
@ -204,7 +201,7 @@ static int swf_write_header(AVFormatContext *s)
if (enc->codec_id == CODEC_ID_VP6F ||
enc->codec_id == CODEC_ID_FLV1 ||
enc->codec_id == CODEC_ID_MJPEG) {
video_enc = enc;
swf->video_enc = enc;
} else {
av_log(s, AV_LOG_ERROR, "SWF muxer only supports VP6, FLV1 and MJPEG\n");
return -1;
@ -212,36 +209,31 @@ static int swf_write_header(AVFormatContext *s)
}
}
if (!video_enc) {
if (!swf->video_enc) {
/* currently, cannot work correctly if audio only */
swf->video_type = 0;
width = 320;
height = 200;
rate = 10;
rate_base= 1;
} else {
swf->video_type = video_enc->codec_id;
width = video_enc->width;
height = video_enc->height;
rate = video_enc->time_base.den;
rate_base = video_enc->time_base.num;
width = swf->video_enc->width;
height = swf->video_enc->height;
rate = swf->video_enc->time_base.den;
rate_base = swf->video_enc->time_base.num;
}
if (!audio_enc) {
swf->audio_type = 0;
if (!swf->audio_enc)
swf->samples_per_frame = (44100. * rate_base) / rate;
} else {
swf->audio_type = audio_enc->codec_id;
swf->samples_per_frame = (audio_enc->sample_rate * rate_base) / rate;
}
else
swf->samples_per_frame = (swf->audio_enc->sample_rate * rate_base) / rate;
put_tag(pb, "FWS");
if (!strcmp("avm2", s->oformat->name))
version = 9;
else if (video_enc && video_enc->codec_id == CODEC_ID_VP6F)
else if (swf->video_enc && swf->video_enc->codec_id == CODEC_ID_VP6F)
version = 8; /* version 8 and above support VP6 codec */
else if (video_enc && video_enc->codec_id == CODEC_ID_FLV1)
else if (swf->video_enc && swf->video_enc->codec_id == CODEC_ID_FLV1)
version = 6; /* version 6 and above support FLV1 codec */
else
version = 4; /* version 4 for mpeg audio support */
@ -263,7 +255,7 @@ static int swf_write_header(AVFormatContext *s)
}
/* define a shape with the jpeg inside */
if (video_enc && video_enc->codec_id == CODEC_ID_MJPEG) {
if (swf->video_enc && swf->video_enc->codec_id == CODEC_ID_MJPEG) {
put_swf_tag(s, TAG_DEFINESHAPE);
put_le16(pb, SHAPE_ID); /* ID of shape */
@ -306,12 +298,12 @@ static int swf_write_header(AVFormatContext *s)
put_swf_end_tag(s);
}
if (audio_enc && audio_enc->codec_id == CODEC_ID_MP3) {
if (swf->audio_enc && swf->audio_enc->codec_id == CODEC_ID_MP3) {
int v = 0;
/* start sound */
put_swf_tag(s, TAG_STREAMHEAD2);
switch(audio_enc->sample_rate) {
switch(swf->audio_enc->sample_rate) {
case 11025: v |= 1 << 2; break;
case 22050: v |= 2 << 2; break;
case 44100: v |= 3 << 2; break;
@ -321,7 +313,7 @@ static int swf_write_header(AVFormatContext *s)
return -1;
}
v |= 0x02; /* 16 bit playback */
if (audio_enc->channels == 2)
if (swf->audio_enc->channels == 2)
v |= 0x01; /* stereo playback */
put_byte(s->pb, v);
v |= 0x20; /* mp3 compressed */
@ -346,8 +338,8 @@ static int swf_write_video(AVFormatContext *s,
if (swf->swf_frame_number == 16000)
av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n");
if (swf->video_type == CODEC_ID_VP6F ||
swf->video_type == CODEC_ID_FLV1) {
if (enc->codec_id == CODEC_ID_VP6F ||
enc->codec_id == CODEC_ID_FLV1) {
if (swf->video_frame_number == 0) {
/* create a new video object */
put_swf_tag(s, TAG_VIDEOSTREAM);
@ -356,7 +348,7 @@ static int swf_write_video(AVFormatContext *s,
put_le16(pb, enc->width);
put_le16(pb, enc->height);
put_byte(pb, 0);
put_byte(pb,codec_get_tag(swf_codec_tags,swf->video_type));
put_byte(pb,codec_get_tag(swf_codec_tags,enc->codec_id));
put_swf_end_tag(s);
/* place the video object for the first time */
@ -384,7 +376,7 @@ static int swf_write_video(AVFormatContext *s,
put_le16(pb, swf->video_frame_number++);
put_buffer(pb, buf, size);
put_swf_end_tag(s);
} else if (swf->video_type == CODEC_ID_MJPEG) {
} else if (enc->codec_id == CODEC_ID_MJPEG) {
if (swf->swf_frame_number > 0) {
/* remove the shape */
put_swf_tag(s, TAG_REMOVEOBJECT);
@ -421,7 +413,7 @@ static int swf_write_video(AVFormatContext *s,
swf->swf_frame_number ++;
/* streaming sound always should be placed just before showframe tags */
if (swf->audio_type && av_fifo_size(&swf->audio_fifo)) {
if (swf->audio_enc && av_fifo_size(&swf->audio_fifo)) {
int frame_size = av_fifo_size(&swf->audio_fifo);
put_swf_tag(s, TAG_STREAMBLOCK | TAG_LONG);
put_le16(pb, swf->sound_samples);
@ -460,7 +452,7 @@ static int swf_write_audio(AVFormatContext *s,
swf->sound_samples += enc->frame_size;
/* if audio only stream make sure we add swf frames */
if (swf->video_type == 0)
if (!swf->video_enc)
swf_write_video(s, enc, 0, 0);
return 0;