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added pcm codecs

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Originally committed as revision 140 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard
2001-09-23 17:16:51 +00:00
parent a56c66a7ef
commit a96b68b717
4 changed files with 446 additions and 22 deletions
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56
libavcodec/utils.c
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@@ -205,6 +205,7 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
const char *codec_name;
AVCodec *p;
char buf1[32];
int bitrate;
if (encode)
p = avcodec_find_encoder(enc->codec_id);
@@ -245,6 +246,7 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
enc->width, enc->height,
(float)enc->frame_rate / FRAME_RATE_BASE);
}
bitrate = enc->bit_rate;
break;
case CODEC_TYPE_AUDIO:
snprintf(buf, buf_size,
@@ -256,13 +258,31 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
enc->sample_rate,
enc->channels == 2 ? "stereo" : "mono");
}
/* for PCM codecs, compute bitrate directly */
switch(enc->codec_id) {
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_U16LE:
case CODEC_ID_PCM_U16BE:
bitrate = enc->sample_rate * 16;
break;
case CODEC_ID_PCM_S8:
case CODEC_ID_PCM_U8:
case CODEC_ID_PCM_ALAW:
case CODEC_ID_PCM_MULAW:
bitrate = enc->sample_rate * 8;
break;
default:
bitrate = enc->bit_rate;
break;
}
break;
default:
abort();
}
if (enc->bit_rate != 0) {
if (bitrate != 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d kb/s", enc->bit_rate / 1000);
", %d kb/s", bitrate / 1000);
}
}
@@ -370,7 +390,6 @@ void avcodec_register_all(void)
register_avcodec(&mpeg4_encoder);
register_avcodec(&msmpeg4_encoder);
#endif /* CONFIG_ENCODERS */
register_avcodec(&pcm_codec);
register_avcodec(&rawvideo_codec);
/* decoders */
@@ -382,13 +401,28 @@ void avcodec_register_all(void)
register_avcodec(&h263i_decoder);
register_avcodec(&rv10_decoder);
register_avcodec(&mjpeg_decoder);
//#ifdef CONFIG_MPGLIB
register_avcodec(&mp3_decoder);
//#endif
#ifdef CONFIG_AC3
register_avcodec(&ac3_decoder);
#endif
#endif /* CONFIG_DECODERS */
/* pcm codecs */
#define PCM_CODEC(id, name) \
register_avcodec(& name ## _encoder); \
register_avcodec(& name ## _decoder); \
PCM_CODEC(CODEC_ID_PCM_S16LE, pcm_s16le);
PCM_CODEC(CODEC_ID_PCM_S16BE, pcm_s16be);
PCM_CODEC(CODEC_ID_PCM_U16LE, pcm_u16le);
PCM_CODEC(CODEC_ID_PCM_U16BE, pcm_u16be);
PCM_CODEC(CODEC_ID_PCM_S8, pcm_s8);
PCM_CODEC(CODEC_ID_PCM_U8, pcm_u8);
PCM_CODEC(CODEC_ID_PCM_ALAW, pcm_alaw);
PCM_CODEC(CODEC_ID_PCM_MULAW, pcm_mulaw);
#undef PCM_CODEC
}
static int encode_init(AVCodecContext *s)
@@ -409,18 +443,6 @@ static int encode_frame(AVCodecContext *avctx,
return -1;
}
/* dummy pcm codec */
AVCodec pcm_codec = {
"pcm",
CODEC_TYPE_AUDIO,
CODEC_ID_PCM,
0,
encode_init,
encode_frame,
NULL,
decode_frame,
};
AVCodec rawvideo_codec = {
"rawvideo",
CODEC_TYPE_VIDEO,