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resampler: Introduce work frame size (w_fz)

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w_fz represents the number of bytes per frame in the resampler stage

Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
This commit is contained in:
Peter Meerwald 2013-07-21 23:14:38 +02:00 • committed by Tanu Kaskinen
parent f434087e42
commit c60a36ecdd
1 changed files with 11 additions and 12 deletions
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23
src/pulsecore/resampler.c
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@ -53,7 +53,7 @@ struct pa_resampler {
pa_sample_spec i_ss, o_ss;
pa_channel_map i_cm, o_cm;
size_t i_fz, o_fz, w_sz;
size_t i_fz, o_fz, w_fz, w_sz;
pa_mempool *mempool;
pa_memchunk to_work_format_buf;
@ -397,6 +397,7 @@ pa_resampler* pa_resampler_new(
pa_log_info("Using %s as working format.", pa_sample_format_to_string(r->work_format));
r->w_sz = pa_sample_size_of_format(r->work_format);
r->w_fz = pa_sample_size_of_format(r->work_format) * r->o_ss.channels;
if (r->i_ss.format != r->work_format) {
if (r->work_format == PA_SAMPLE_FLOAT32NE) {
@ -504,7 +505,7 @@ size_t pa_resampler_result(pa_resampler *r, size_t in_length) {
frames = (in_length + r->i_fz - 1) / r->i_fz;
if (r->remap_buf_contains_leftover_data)
frames += r->remap_buf.length / (r->w_sz * r->o_ss.channels);
frames += r->remap_buf.length / r->w_fz;
return (((uint64_t) frames * r->o_ss.rate + r->i_ss.rate - 1) / r->i_ss.rate) * r->o_fz;
}
@ -533,7 +534,7 @@ size_t pa_resampler_max_block_size(pa_resampler *r) {
frames = block_size_max / max_fs - EXTRA_FRAMES;
if (r->remap_buf_contains_leftover_data)
frames -= r->remap_buf.length / (r->w_sz * r->o_ss.channels);
frames -= r->remap_buf.length / r->w_fz;
block_size_max = ((uint64_t) frames * r->i_ss.rate / max_ss.rate) * r->i_fz;
@ -1190,7 +1191,7 @@ static pa_memchunk *remap_channels(pa_resampler *r, pa_memchunk *input) {
if (have_leftover) {
leftover_length = r->remap_buf.length;
out_n_frames += leftover_length / (r->w_sz * r->o_ss.channels);
out_n_frames += leftover_length / r->w_fz;
}
out_n_samples = out_n_frames * r->o_ss.channels;
@ -1269,7 +1270,7 @@ 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->o_ss.channels;
r->resample_buf.length = out_n_frames * r->w_fz;
return &r->resample_buf;
}
@ -1391,7 +1392,7 @@ static void libsamplerate_resample(pa_resampler *r, const pa_memchunk *input, un
if (data.input_frames_used < in_n_frames) {
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;
size_t leftover_length = (in_n_frames - data.input_frames_used) * r->w_fz;
save_leftover(r, leftover_data, leftover_length);
}
@ -1562,7 +1563,6 @@ static int speex_init(pa_resampler *r) {
/* Trivial implementation */
static void trivial_resample(pa_resampler *r, const pa_memchunk *input, unsigned in_n_frames, pa_memchunk *output, unsigned *out_n_frames) {
size_t fz;
unsigned i_index, o_index;
void *src, *dst;
struct trivial_data *trivial_data;
@ -1573,7 +1573,6 @@ static void trivial_resample(pa_resampler *r, const pa_memchunk *input, unsigned
pa_assert(out_n_frames);
trivial_data = r->impl.data;
fz = r->w_sz * r->o_ss.channels;
src = pa_memblock_acquire_chunk(input);
dst = pa_memblock_acquire_chunk(output);
@ -1585,9 +1584,9 @@ static void trivial_resample(pa_resampler *r, const pa_memchunk *input, unsigned
if (i_index >= in_n_frames)
break;
pa_assert_fp(o_index * fz < pa_memblock_get_length(output->memblock));
pa_assert_fp(o_index * r->w_fz < pa_memblock_get_length(output->memblock));
memcpy((uint8_t*) dst + fz * o_index, (uint8_t*) src + fz * i_index, (int) fz);
memcpy((uint8_t*) dst + r->w_fz * o_index, (uint8_t*) src + r->w_fz * i_index, (int) r->w_fz);
}
pa_memblock_release(input->memblock);
@ -1654,7 +1653,7 @@ static void peaks_resample(pa_resampler *r, const pa_memchunk *input, unsigned i
i_end = ((uint64_t) (peaks_data->o_counter + 1) * r->i_ss.rate) / r->o_ss.rate;
i_end = i_end > peaks_data->i_counter ? i_end - peaks_data->i_counter : 0;
pa_assert_fp(o_index * r->w_sz * r->o_ss.channels < pa_memblock_get_length(output->memblock));
pa_assert_fp(o_index * r->w_fz < pa_memblock_get_length(output->memblock));
/* 1ch float is treated separately, because that is the common case */
if (r->o_ss.channels == 1 && r->work_format == PA_SAMPLE_FLOAT32NE) {
@ -1822,7 +1821,7 @@ static void ffmpeg_resample(pa_resampler *r, const pa_memchunk *input, unsigned
if (previous_consumed_frames < (int) in_n_frames) {
void *leftover_data = (int16_t *) pa_memblock_acquire_chunk(input) + previous_consumed_frames * r->o_ss.channels;
size_t leftover_length = (in_n_frames - previous_consumed_frames) * r->o_ss.channels * sizeof(int16_t);
size_t leftover_length = (in_n_frames - previous_consumed_frames) * r->w_fz;
save_leftover(r, leftover_data, leftover_length);
pa_memblock_release(input->memblock);