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rework the resample to allocate temporary memory with pa_memblock_new() instead of pa_xrealloc()

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1291 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2006-08-19 02:23:52 +00:00
parent 521d15babb
commit af87c7d21b
1 changed files with 58 additions and 25 deletions
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83
src/pulsecore/resampler.c
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@ -51,6 +51,7 @@ struct pa_resampler {
};
struct impl_libsamplerate {
pa_memblock *buf1_block, *buf2_block, *buf3_block, *buf4_block;
float* buf1, *buf2, *buf3, *buf4;
unsigned buf1_samples, buf2_samples, buf3_samples, buf4_samples;
@ -223,10 +224,14 @@ static void libsamplerate_free(pa_resampler *r) {
if (u->src_state)
src_delete(u->src_state);
pa_xfree(u->buf1);
pa_xfree(u->buf2);
pa_xfree(u->buf3);
pa_xfree(u->buf4);
if (u->buf1_block)
pa_memblock_unref(u->buf1_block);
if (u->buf2_block)
pa_memblock_unref(u->buf2_block);
if (u->buf3_block)
pa_memblock_unref(u->buf3_block);
if (u->buf4_block)
pa_memblock_unref(u->buf4_block);
pa_xfree(u);
}
@ -281,8 +286,14 @@ static float * convert_to_float(pa_resampler *r, void *input, unsigned n_frames)
n_samples = n_frames * r->i_ss.channels;
if (u->buf1_samples < n_samples)
u->buf1 = pa_xrealloc(u->buf1, sizeof(float) * (u->buf1_samples = n_samples));
if (u->buf1_samples < n_samples) {
if (u->buf1_block)
pa_memblock_unref(u->buf1_block);
u->buf1_samples = n_samples;
u->buf1_block = pa_memblock_new(r->mempool, sizeof(float) * n_samples);
u->buf1 = u->buf1_block->data;
}
u->to_float32ne_func(n_samples, input, u->buf1);
@ -307,8 +318,14 @@ static float *remap_channels(pa_resampler *r, float *input, unsigned n_frames) {
n_samples = n_frames * r->o_ss.channels;
if (u->buf2_samples < n_samples)
u->buf2 = pa_xrealloc(u->buf2, sizeof(float) * (u->buf2_samples = n_samples));
if (u->buf2_samples < n_samples) {
if (u->buf2_block)
pa_memblock_unref(u->buf2_block);
u->buf2_samples = n_samples;
u->buf2_block = pa_memblock_new(r->mempool, sizeof(float) * n_samples);
u->buf2 = u->buf2_block->data;
}
memset(u->buf2, 0, n_samples * sizeof(float));
@ -351,8 +368,14 @@ static float *resample(pa_resampler *r, float *input, unsigned *n_frames) {
out_n_frames = (*n_frames*r->o_ss.rate/r->i_ss.rate)+1024;
out_n_samples = out_n_frames * r->o_ss.channels;
if (u->buf3_samples < out_n_samples)
u->buf3 = pa_xrealloc(u->buf3, sizeof(float) * (u->buf3_samples = out_n_samples));
if (u->buf3_samples < out_n_samples) {
if (u->buf3_block)
pa_memblock_unref(u->buf3_block);
u->buf3_samples = out_n_samples;
u->buf3_block = pa_memblock_new(r->mempool, sizeof(float) * out_n_samples);
u->buf3 = u->buf3_block->data;
}
data.data_in = input;
data.input_frames = *n_frames;
@ -388,9 +411,15 @@ static void *convert_from_float(pa_resampler *r, float *input, unsigned n_frames
n_samples = n_frames * r->o_ss.channels;
if (u->buf4_samples < n_samples)
u->buf4 = pa_xrealloc(u->buf4, sizeof(float) * (u->buf4_samples = n_samples));
if (u->buf4_samples < n_samples) {
if (u->buf4_block)
pa_memblock_unref(u->buf4_block);
u->buf4_samples = n_samples;
u->buf4_block = pa_memblock_new(r->mempool, sizeof(float) * n_samples);
u->buf4 = u->buf4_block->data;
}
u->from_float32ne_func(n_samples, input, u->buf4);
return u->buf4;
@ -429,30 +458,33 @@ static void libsamplerate_run(pa_resampler *r, const pa_memchunk *in, pa_memchun
out->index = in->index;
out->length = in->length;
} else {
float **p = NULL;
out->length = n_frames * r->o_fz;
out->index = 0;
out->memblock = NULL;
if (output == u->buf1) {
p = &u->buf1;
u->buf1 = NULL;
u->buf1_samples = 0;
out->memblock = u->buf1_block;
u->buf1_block = NULL;
} else if (output == u->buf2) {
p = &u->buf2;
u->buf2 = NULL;
u->buf2_samples = 0;
out->memblock = u->buf2_block;
u->buf2_block = NULL;
} else if (output == u->buf3) {
p = &u->buf3;
u->buf3 = NULL;
u->buf3_samples = 0;
out->memblock = u->buf3_block;
u->buf3_block = NULL;
} else if (output == u->buf4) {
p = &u->buf4;
u->buf4 = NULL;
u->buf4_samples = 0;
out->memblock = u->buf4_block;
u->buf4_block = NULL;
}
assert(p);
/* Take the existing buffer and make it a memblock */
out->memblock = pa_memblock_new_malloced(r->mempool, *p, out->length);
*p = NULL;
assert(out->memblock);
}
} else {
out->memblock = NULL;
@ -485,6 +517,7 @@ static int libsamplerate_init(pa_resampler *r) {
r->impl_data = u = pa_xnew(struct impl_libsamplerate, 1);
u->buf1 = u->buf2 = u->buf3 = u->buf4 = NULL;
u->buf1_block = u->buf2_block = u->buf3_block = u->buf4_block = NULL;
u->buf1_samples = u->buf2_samples = u->buf3_samples = u->buf4_samples = 0;
if (r->i_ss.format == PA_SAMPLE_FLOAT32NE)