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Factorize av_get_bit_rate (for future use outside of libavcodec). 

Patch by Robert Krüger, krueger signal7 de

Originally committed as revision 20569 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Robert Krüger 2009-11-21 09:58:15 +00:00 committed by Carl Eugen Hoyos
parent 2cb2d6f0f7
commit ce34ff6b45
1 changed files with 30 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
libavcodec/utils.c
View File

@ -743,6 +743,35 @@ AVCodec *avcodec_find_decoder_by_name(const char *name)
return NULL;
}
int av_get_bit_rate(AVCodecContext *ctx)
{
int bit_rate;
int bits_per_sample;
switch(ctx->codec_type) {
case CODEC_TYPE_VIDEO:
bit_rate = ctx->bit_rate;
break;
case CODEC_TYPE_AUDIO:
bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
break;
case CODEC_TYPE_DATA:
bit_rate = ctx->bit_rate;
break;
case CODEC_TYPE_SUBTITLE:
bit_rate = ctx->bit_rate;
break;
case CODEC_TYPE_ATTACHMENT:
bit_rate = ctx->bit_rate;
break;
default:
bit_rate = 0;
break;
}
return bit_rate;
}
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
{
const char *codec_name;
@ -815,7 +844,6 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", q=%d-%d", enc->qmin, enc->qmax);
}
bitrate = enc->bit_rate;
break;
case CODEC_TYPE_AUDIO:
snprintf(buf, buf_size,
@ -831,58 +859,15 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
}
/* for PCM codecs, compute bitrate directly */
switch(enc->codec_id) {
case CODEC_ID_PCM_F64BE:
case CODEC_ID_PCM_F64LE:
bitrate = enc->sample_rate * enc->channels * 64;
break;
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_S32BE:
case CODEC_ID_PCM_U32LE:
case CODEC_ID_PCM_U32BE:
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_F32LE:
bitrate = enc->sample_rate * enc->channels * 32;
break;
case CODEC_ID_PCM_S24LE:
case CODEC_ID_PCM_S24BE:
case CODEC_ID_PCM_U24LE:
case CODEC_ID_PCM_U24BE:
case CODEC_ID_PCM_S24DAUD:
bitrate = enc->sample_rate * enc->channels * 24;
break;
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_S16LE_PLANAR:
case CODEC_ID_PCM_U16LE:
case CODEC_ID_PCM_U16BE:
bitrate = enc->sample_rate * enc->channels * 16;
break;
case CODEC_ID_PCM_S8:
case CODEC_ID_PCM_U8:
case CODEC_ID_PCM_ALAW:
case CODEC_ID_PCM_MULAW:
case CODEC_ID_PCM_ZORK:
bitrate = enc->sample_rate * enc->channels * 8;
break;
default:
bitrate = enc->bit_rate;
break;
}
break;
case CODEC_TYPE_DATA:
snprintf(buf, buf_size, "Data: %s", codec_name);
bitrate = enc->bit_rate;
break;
case CODEC_TYPE_SUBTITLE:
snprintf(buf, buf_size, "Subtitle: %s", codec_name);
bitrate = enc->bit_rate;
break;
case CODEC_TYPE_ATTACHMENT:
snprintf(buf, buf_size, "Attachment: %s", codec_name);
bitrate = enc->bit_rate;
break;
default:
snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
@ -896,6 +881,7 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", pass 2");
}
bitrate = av_get_bit_rate(enc);
if (bitrate != 0) {
snprintf(buf + strlen(buf), buf_size - strlen(buf),
", %d kb/s", bitrate / 1000);