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authorWim Taymans <wim.taymans@collabora.co.uk>2009-08-20 18:23:42 +0200
committerWim Taymans <wim.taymans@collabora.co.uk>2009-08-20 18:23:42 +0200
commitac1f2e0a2e0707636aabd48baa57c124a877f834 (patch)
tree4de2ea134839eee100d17cc355bade556901392d /src/pulsecore/resampler.c
parenta3f4a4f6ba741a996442d7a80cc3e267fab705fb (diff)
remap: move remapping code in separate file
Move the remapping code into a separate file. Have functions to install custom init functions that can install optimized versions, when they want.
Diffstat (limited to 'src/pulsecore/resampler.c')
-rw-r--r--src/pulsecore/resampler.c155
1 files changed, 3 insertions, 152 deletions
diff --git a/src/pulsecore/resampler.c b/src/pulsecore/resampler.c
index 0d8ca010..f1bfa156 100644
--- a/src/pulsecore/resampler.c
+++ b/src/pulsecore/resampler.c
@@ -40,25 +40,11 @@
#include "ffmpeg/avcodec.h"
#include "resampler.h"
+#include "remap.h"
/* Number of samples of extra space we allow the resamplers to return */
#define EXTRA_FRAMES 128
-typedef struct pa_remap pa_remap_t;
-
-typedef void (*pa_do_remap_func_t) (pa_remap_t *m, void *d, const void *s, unsigned n);
-
-struct pa_remap {
- pa_sample_format_t *format;
- pa_sample_spec *i_ss, *o_ss;
- float map_table_f[PA_CHANNELS_MAX][PA_CHANNELS_MAX];
- int32_t map_table_i[PA_CHANNELS_MAX][PA_CHANNELS_MAX];
- pa_do_remap_func_t do_remap;
-};
-
-static void remap_channels_matrix (pa_remap_t *m, void *dst, const void *src, unsigned n);
-static void remap_mono_to_stereo(pa_remap_t *m, void *dst, const void *src, unsigned n);
-
struct pa_resampler {
pa_resample_method_t method;
pa_resample_flags_t flags;
@@ -1036,16 +1022,8 @@ static void calc_map_table(pa_resampler *r) {
pa_log_debug("Channel matrix:\n%s", t = pa_strbuf_tostring_free(s));
pa_xfree(t);
- /* find some common channel remappings, fall back to full matrix operation. */
- if (n_ic == 1 && n_oc == 2 &&
- m->map_table_f[0][0] >= 1.0 && m->map_table_f[1][0] >= 1.0) {
- m->do_remap = (pa_do_remap_func_t) remap_mono_to_stereo;;
- pa_log_info("Using mono to stereo remapping");
- } else {
- m->do_remap = (pa_do_remap_func_t) remap_channels_matrix;
- pa_log_info("Using generic matrix remapping");
- }
-
+ /* initialize the remapping function */
+ pa_init_remap (m);
}
static pa_memchunk* convert_to_work_format(pa_resampler *r, pa_memchunk *input) {
@@ -1085,133 +1063,6 @@ static pa_memchunk* convert_to_work_format(pa_resampler *r, pa_memchunk *input)
return &r->buf1;
}
-static void remap_mono_to_stereo(pa_remap_t *m, void *dst, const void *src, unsigned n) {
- unsigned i;
-
- switch (*m->format) {
- case PA_SAMPLE_FLOAT32NE:
- {
- float *d, *s;
-
- d = (float *) dst;
- s = (float *) src;
-
- for (i = n >> 2; i; i--) {
- d[0] = d[1] = s[0];
- d[2] = d[3] = s[1];
- d[4] = d[5] = s[2];
- d[6] = d[7] = s[3];
- s += 4;
- d += 8;
- }
- for (i = n & 3; i; i--) {
- d[0] = d[1] = s[0];
- s++;
- d += 2;
- }
- break;
- }
- case PA_SAMPLE_S16NE:
- {
- int16_t *d, *s;
-
- d = (int16_t *) dst;
- s = (int16_t *) src;
-
- for (i = n >> 2; i; i--) {
- d[0] = d[1] = s[0];
- d[2] = d[3] = s[1];
- d[4] = d[5] = s[2];
- d[6] = d[7] = s[3];
- s += 4;
- d += 8;
- }
- for (i = n & 3; i; i--) {
- d[0] = d[1] = s[0];
- s++;
- d += 2;
- }
- break;
- }
- default:
- pa_assert_not_reached();
- }
-}
-
-static void remap_channels_matrix (pa_remap_t *m, void *dst, const void *src, unsigned n) {
- unsigned oc, ic, i;
- unsigned n_ic, n_oc;
-
- n_ic = m->i_ss->channels;
- n_oc = m->o_ss->channels;
-
- switch (*m->format) {
- case PA_SAMPLE_FLOAT32NE:
- {
- float *d, *s;
-
- memset(dst, 0, n * sizeof (float) * n_oc);
-
- for (oc = 0; oc < n_oc; oc++) {
-
- for (ic = 0; ic < n_ic; ic++) {
- float vol;
-
- vol = m->map_table_f[oc][ic];
-
- if (vol <= 0.0)
- continue;
-
- d = (float *)dst + oc;
- s = (float *)src + ic;
-
- if (vol >= 1.0) {
- for (i = n; i > 0; i--, s += n_ic, d += n_oc)
- *d += *s;
- } else {
- for (i = n; i > 0; i--, s += n_ic, d += n_oc)
- *d += *s * vol;
- }
- }
- }
-
- break;
- }
- case PA_SAMPLE_S16NE:
- {
- int16_t *d, *s;
-
- memset(dst, 0, n * sizeof (int16_t) * n_oc);
-
- for (oc = 0; oc < n_oc; oc++) {
-
- for (ic = 0; ic < n_ic; ic++) {
- int32_t vol;
-
- vol = m->map_table_i[oc][ic];
-
- if (vol <= 0)
- continue;
-
- d = (int16_t *)dst + oc;
- s = (int16_t *)src + ic;
-
- if (vol >= 0x10000) {
- for (i = n; i > 0; i--, s += n_ic, d += n_oc)
- *d += *s;
- } else {
- for (i = n; i > 0; i--, s += n_ic, d += n_oc)
- *d += (int16_t) (((int32_t)*s * vol) >> 16);
- }
- }
- }
- break;
- }
- default:
- pa_assert_not_reached();
- }
-}
-
static pa_memchunk *remap_channels(pa_resampler *r, pa_memchunk *input) {
unsigned in_n_samples, out_n_samples, n_frames;
void *src, *dst;