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libswresample: support directly converting sampleformats and packed/planar in a single pass. 

Previously a intermediate planar format was used when both input and output where packed.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-10-05 23:46:50 +02:00
parent 63b6d5f33f
commit 503e5e9db5
2 changed files with 15 additions and 0 deletions
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14
libswresample/swresample.c
View File

@ -110,6 +110,7 @@ void swr_free(SwrContext **ss){
free_temp(&s->in_buffer);
swr_audio_convert_free(&s-> in_convert);
swr_audio_convert_free(&s->out_convert);
swr_audio_convert_free(&s->full_convert);
swr_resample_free(&s->resample);
}
@ -138,6 +139,7 @@ int swr_init(SwrContext *s){
free_temp(&s->in_buffer);
swr_audio_convert_free(&s-> in_convert);
swr_audio_convert_free(&s->out_convert);
swr_audio_convert_free(&s->full_convert);
s-> in.planar= s-> in_sample_fmt >= 0x100;
s->out.planar= s->out_sample_fmt >= 0x100;
@ -196,6 +198,12 @@ av_assert0(s->out.ch_count);
s->int_bps= av_get_bits_per_sample_fmt(s->int_sample_fmt)/8;
s->out.bps= av_get_bits_per_sample_fmt(s->out_sample_fmt)/8;
if(!s->resample && !s->rematrix){
s->full_convert = swr_audio_convert_alloc(s->out_sample_fmt,
s-> in_sample_fmt, s-> in.ch_count, 0);
return 0;
}
s->in_convert = swr_audio_convert_alloc(s->int_sample_fmt,
s-> in_sample_fmt, s-> in.ch_count, 0);
s->out_convert= swr_audio_convert_alloc(s->out_sample_fmt,
@ -291,6 +299,12 @@ int swr_convert(struct SwrContext *s, uint8_t *out_arg[SWR_CH_MAX], int out_coun
fill_audiodata(in , in_arg);
fill_audiodata(out, out_arg);
if(s->full_convert){
av_assert0(!s->resample);
swr_audio_convert(s->full_convert, out, in, in_count);
return out_count;
}
// in_max= out_count*(int64_t)s->in_sample_rate / s->out_sample_rate + resample_filter_taps;
// in_count= FFMIN(in_count, in_in + 2 - s->hist_buffer_count);

1
libswresample/swresample_internal.h
View File

@ -58,6 +58,7 @@ typedef struct SwrContext { //FIXME find unused fields
struct AVAudioConvert *in_convert;
struct AVAudioConvert *out_convert;
struct AVAudioConvert *full_convert;
struct AVResampleContext *resample;
float matrix[SWR_CH_MAX][SWR_CH_MAX];