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Revert "resampler: Resample first followed by remapping if have more out channels than in channels"

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This reverts commit 30ce3a14e5.

The commit broke the leftover buffer handling, see [1] for more
information.

[1] http://thread.gmane.org/gmane.comp.audio.pulseaudio.general/17479/focus=17487
This commit is contained in:
Tanu Kaskinen 2013-07-10 21:24:04 +03:00
parent 8e0e2617fb
commit 1ce71cbd82
1 changed files with 13 additions and 31 deletions
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44
src/pulsecore/resampler.c
View file

@ -67,7 +67,6 @@ struct pa_resampler {
bool remap_buf_contains_leftover_data;
pa_sample_format_t work_format;
uint8_t work_channels;
pa_convert_func_t to_work_format_func;
pa_convert_func_t from_work_format_func;
@ -329,16 +328,6 @@ pa_resampler* pa_resampler_new(
}
}
if (r->o_ss.channels <= r->i_ss.channels)
r->work_channels = r->o_ss.channels;
else
r->work_channels = r->i_ss.channels;
pa_log_debug("Resampler:\n rate %d -> %d (method %s),\n format %s -> %s (intermediate %s),\n channels %d -> %d (resampling %d)",
a->rate, b->rate, pa_resample_method_to_string(r->method),
pa_sample_format_to_string(a->format), pa_sample_format_to_string(b->format), pa_sample_format_to_string(r->work_format),
a->channels, b->channels, r->work_channels);
/* initialize implementation */
if (init_table[method](r) < 0)
goto fail;
@ -1151,10 +1140,10 @@ static pa_memchunk *resample(pa_resampler *r, pa_memchunk *input) {
return input;
in_n_samples = (unsigned) (input->length / r->w_sz);
in_n_frames = (unsigned) (in_n_samples / r->work_channels);
in_n_frames = (unsigned) (in_n_samples / r->o_ss.channels);
out_n_frames = ((in_n_frames*r->o_ss.rate)/r->i_ss.rate)+EXTRA_FRAMES;
out_n_samples = out_n_frames * r->work_channels;
out_n_samples = out_n_frames * r->o_ss.channels;
r->resample_buf.index = 0;
r->resample_buf.length = r->w_sz * out_n_samples;
@ -1168,7 +1157,7 @@ static pa_memchunk *resample(pa_resampler *r, pa_memchunk *input) {
}
r->impl_resample(r, input, in_n_frames, &r->resample_buf, &out_n_frames);
r->resample_buf.length = out_n_frames * r->w_sz * r->work_channels;
r->resample_buf.length = out_n_frames * r->w_sz * r->o_ss.channels;
return &r->resample_buf;
}
@ -1221,15 +1210,8 @@ void pa_resampler_run(pa_resampler *r, const pa_memchunk *in, pa_memchunk *out)
buf = (pa_memchunk*) in;
buf = convert_to_work_format(r, buf);
/* Try to save resampling effort: if we have more output channels than
* input channels, do resampling first, then remapping. */
if (r->o_ss.channels <= r->i_ss.channels) {
buf = remap_channels(r, buf);
buf = resample(r, buf);
} else {
buf = resample(r, buf);
buf = remap_channels(r, buf);
}
buf = remap_channels(r, buf);
buf = resample(r, buf);
if (buf->length) {
buf = convert_from_work_format(r, buf);
@ -1294,8 +1276,8 @@ static void libsamplerate_resample(pa_resampler *r, const pa_memchunk *input, un
pa_assert_se(src_process(r->src.state, &data) == 0);
if (data.input_frames_used < in_n_frames) {
void *leftover_data = data.data_in + data.input_frames_used * r->work_channels;
size_t leftover_length = (in_n_frames - data.input_frames_used) * sizeof(float) * r->work_channels;
void *leftover_data = data.data_in + data.input_frames_used * r->o_ss.channels;
size_t leftover_length = (in_n_frames - data.input_frames_used) * sizeof(float) * r->o_ss.channels;
save_leftover(r, leftover_data, leftover_length);
}
@ -1431,7 +1413,7 @@ static int speex_init(pa_resampler *r) {
pa_log_info("Choosing speex quality setting %i.", q);
if (!(r->speex.state = speex_resampler_init(r->work_channels, r->i_ss.rate, r->o_ss.rate, q, &err)))
if (!(r->speex.state = speex_resampler_init(r->o_ss.channels, r->i_ss.rate, r->o_ss.rate, q, &err)))
return -1;
return 0;
@ -1450,7 +1432,7 @@ static void trivial_resample(pa_resampler *r, const pa_memchunk *input, unsigned
pa_assert(output);
pa_assert(out_n_frames);
fz = r->w_sz * r->work_channels;
fz = r->w_sz * r->o_ss.channels;
src = pa_memblock_acquire_chunk(input);
dst = pa_memblock_acquire_chunk(output);
@ -1634,7 +1616,7 @@ static void ffmpeg_resample(pa_resampler *r, const pa_memchunk *input, unsigned
pa_assert(output);
pa_assert(out_n_frames);
for (c = 0; c < r->work_channels; c++) {
for (c = 0; c < r->o_ss.channels; c++) {
unsigned u;
pa_memblock *b, *w;
int16_t *p, *t, *k, *q, *s;
@ -1649,7 +1631,7 @@ static void ffmpeg_resample(pa_resampler *r, const pa_memchunk *input, unsigned
k = p;
for (u = 0; u < in_n_frames; u++) {
*k = *t;
t += r->work_channels;
t += r->o_ss.channels;
k ++;
}
pa_memblock_release(input->memblock);
@ -1663,7 +1645,7 @@ static void ffmpeg_resample(pa_resampler *r, const pa_memchunk *input, unsigned
q, p,
&consumed_frames,
(int) in_n_frames, (int) *out_n_frames,
c >= (unsigned) (r->work_channels-1));
c >= (unsigned) (r->o_ss.channels-1));
pa_memblock_release(b);
pa_memblock_unref(b);
@ -1677,7 +1659,7 @@ static void ffmpeg_resample(pa_resampler *r, const pa_memchunk *input, unsigned
for (u = 0; u < used_frames; u++) {
*s = *q;
q++;
s += r->work_channels;
s += r->o_ss.channels;
}
pa_memblock_release(output->memblock);
pa_memblock_release(w);