From b0a68fd09ff6fa62accdc29307c5f445cc054a94 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 9 Nov 2007 17:11:45 +0000 Subject: optimize mixing code a bit. Add mixers for S32LE, S32BE, ULAW, ALAW and FLOAT32BE. Add volume adjusters for FLOAT32BE, ALAW, ULAW. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2041 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/pulsecore/sample-util.c | 560 +++++++++++++++++++++++++++++++++++--------- src/pulsecore/sample-util.h | 11 +- 2 files changed, 459 insertions(+), 112 deletions(-) (limited to 'src/pulsecore') diff --git a/src/pulsecore/sample-util.c b/src/pulsecore/sample-util.c index 001a997e..4ea5d446 100644 --- a/src/pulsecore/sample-util.c +++ b/src/pulsecore/sample-util.c @@ -35,6 +35,7 @@ #include #include +#include #include "sample-util.h" #include "endianmacros.h" @@ -119,6 +120,58 @@ void pa_silence_memory(void *p, size_t length, const pa_sample_spec *spec) { memset(p, c, length); } +static void calc_linear_integer_stream_volumes(pa_mix_info streams[], unsigned nstreams, const pa_sample_spec *spec) { + unsigned k; + + pa_assert(streams); + pa_assert(spec); + + for (k = 0; k < nstreams; k++) { + unsigned channel; + + for (channel = 0; channel < spec->channels; channel++) { + pa_mix_info *m = streams + k; + m->linear[channel].i = (int32_t) (pa_sw_volume_to_linear(m->volume.values[channel]) * 0x10000); + } + } +} + +static void calc_linear_integer_volume(int32_t linear[], const pa_cvolume *volume) { + unsigned channel; + + pa_assert(linear); + pa_assert(volume); + + for (channel = 0; channel < volume->channels; channel++) + linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000); +} + +static void calc_linear_float_stream_volumes(pa_mix_info streams[], unsigned nstreams, const pa_sample_spec *spec) { + unsigned k; + + pa_assert(streams); + pa_assert(spec); + + for (k = 0; k < nstreams; k++) { + unsigned channel; + + for (channel = 0; channel < spec->channels; channel++) { + pa_mix_info *m = streams + k; + m->linear[channel].f = pa_sw_volume_to_linear(m->volume.values[channel]); + } + } +} + +static void calc_linear_float_volume(float linear[], const pa_cvolume *volume) { + unsigned channel; + + pa_assert(linear); + pa_assert(volume); + + for (channel = 0; channel < volume->channels; channel++) + linear[channel] = pa_sw_volume_to_linear(volume->values[channel]); +} + size_t pa_mix( pa_mix_info streams[], unsigned nstreams, @@ -126,11 +179,11 @@ size_t pa_mix( size_t length, const pa_sample_spec *spec, const pa_cvolume *volume, - int mute) { + pa_bool_t mute) { pa_cvolume full_volume; - size_t d = 0; unsigned k; + size_t d = 0; pa_assert(streams); pa_assert(data); @@ -141,50 +194,49 @@ size_t pa_mix( volume = pa_cvolume_reset(&full_volume, spec->channels); for (k = 0; k < nstreams; k++) - streams[k].internal = pa_memblock_acquire(streams[k].chunk.memblock); + streams[k].ptr = (uint8_t*) pa_memblock_acquire(streams[k].chunk.memblock) + streams[k].chunk.index; switch (spec->format) { + case PA_SAMPLE_S16NE:{ unsigned channel = 0; + int32_t linear[PA_CHANNELS_MAX]; + + calc_linear_integer_stream_volumes(streams, nstreams, spec); + calc_linear_integer_volume(linear, volume); for (d = 0;; d += sizeof(int16_t)) { int32_t sum = 0; + unsigned i; - if (d >= length) + if (PA_UNLIKELY(d >= length)) goto finish; - if (!mute && volume->values[channel] != PA_VOLUME_MUTED) { - unsigned i; - - for (i = 0; i < nstreams; i++) { - int32_t v; - pa_volume_t cvolume = streams[i].volume.values[channel]; - - if (d >= streams[i].chunk.length) - goto finish; - - if (cvolume == PA_VOLUME_MUTED) - v = 0; - else { - v = *((int16_t*) ((uint8_t*) streams[i].internal + streams[i].chunk.index + d)); + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + int32_t v, cv = m->linear[channel].i; - if (cvolume != PA_VOLUME_NORM) - v = (int32_t) (v * pa_sw_volume_to_linear(cvolume)); - } + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; - sum += v; + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + v = *((int16_t*) m->ptr); + v = (v * cv) / 0x10000; } - if (volume->values[channel] != PA_VOLUME_NORM) - sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel])); - - sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF); + sum += v; + m->ptr = (uint8_t*) m->ptr + sizeof(int16_t); } + sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF); + sum = (sum * linear[channel]) / 0x10000; *((int16_t*) data) = (int16_t) sum; + data = (uint8_t*) data + sizeof(int16_t); - if (++channel >= spec->channels) + if (PA_UNLIKELY(++channel >= spec->channels)) channel = 0; } @@ -193,45 +245,135 @@ size_t pa_mix( case PA_SAMPLE_S16RE:{ unsigned channel = 0; + int32_t linear[PA_CHANNELS_MAX]; + + calc_linear_integer_stream_volumes(streams, nstreams, spec); + calc_linear_integer_volume(linear, volume); for (d = 0;; d += sizeof(int16_t)) { int32_t sum = 0; + unsigned i; - if (d >= length) + if (PA_UNLIKELY(d >= length)) goto finish; - if (!mute && volume->values[channel] != PA_VOLUME_MUTED) { - unsigned i; + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + int32_t v, cv = m->linear[channel].i; + + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; + + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + v = PA_INT16_SWAP(*((int16_t*) m->ptr)); + v = (v * cv) / 0x10000; + } + + sum += v; + m->ptr = (uint8_t*) m->ptr + sizeof(int16_t); + } + + sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF); + sum = (sum * linear[channel]) / 0x10000; + *((int16_t*) data) = PA_INT16_SWAP((int16_t) sum); + + data = (uint8_t*) data + sizeof(int16_t); + + if (PA_UNLIKELY(++channel >= spec->channels)) + channel = 0; + } + + break; + } + + case PA_SAMPLE_S32NE:{ + unsigned channel = 0; + int32_t linear[PA_CHANNELS_MAX]; + + calc_linear_integer_stream_volumes(streams, nstreams, spec); + calc_linear_integer_volume(linear, volume); - for (i = 0; i < nstreams; i++) { - int32_t v; - pa_volume_t cvolume = streams[i].volume.values[channel]; + for (d = 0;; d += sizeof(int32_t)) { + int64_t sum = 0; + unsigned i; - if (d >= streams[i].chunk.length) - goto finish; + if (PA_UNLIKELY(d >= length)) + goto finish; - if (cvolume == PA_VOLUME_MUTED) - v = 0; - else { - v = PA_INT16_SWAP(*((int16_t*) ((uint8_t*) streams[i].internal + streams[i].chunk.index + d))); + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + int64_t v; + int32_t cv = m->linear[channel].i; - if (cvolume != PA_VOLUME_NORM) - v = (int32_t) (v * pa_sw_volume_to_linear(cvolume)); - } + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; - sum += v; + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + v = *((int32_t*) m->ptr); + v = (v * cv) / 0x10000; } - if (volume->values[channel] != PA_VOLUME_NORM) - sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel])); + sum += v; + m->ptr = (uint8_t*) m->ptr + sizeof(int32_t); + } + + sum = PA_CLAMP_UNLIKELY(sum, -0x80000000LL, 0x7FFFFFFFLL); + sum = (sum * linear[channel]) / 0x10000; + *((int32_t*) data) = (int32_t) sum; + + data = (uint8_t*) data + sizeof(int32_t); + + if (PA_UNLIKELY(++channel >= spec->channels)) + channel = 0; + } + + break; + } + + case PA_SAMPLE_S32RE:{ + unsigned channel = 0; + int32_t linear[PA_CHANNELS_MAX]; + + calc_linear_integer_stream_volumes(streams, nstreams, spec); + calc_linear_integer_volume(linear, volume); + + for (d = 0;; d += sizeof(int32_t)) { + int64_t sum = 0; + unsigned i; + + if (PA_UNLIKELY(d >= length)) + goto finish; + + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + int64_t v; + int32_t cv = m->linear[channel].i; + + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; + + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + v = PA_INT32_SWAP(*((int32_t*) m->ptr)); + v = (v * cv) / 0x10000; + } - sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF); + sum += v; + m->ptr = (uint8_t*) m->ptr + sizeof(int32_t); } - *((int16_t*) data) = PA_INT16_SWAP((int16_t) sum); - data = (uint8_t*) data + sizeof(int16_t); + sum = PA_CLAMP_UNLIKELY(sum, -0x80000000LL, 0x7FFFFFFFLL); + sum = (sum * linear[channel]) / 0x10000; + *((int32_t*) data) = PA_INT32_SWAP((int32_t) sum); + + data = (uint8_t*) data + sizeof(int32_t); - if (++channel >= spec->channels) + if (PA_UNLIKELY(++channel >= spec->channels)) channel = 0; } @@ -240,45 +382,133 @@ size_t pa_mix( case PA_SAMPLE_U8: { unsigned channel = 0; + int32_t linear[PA_CHANNELS_MAX]; + + calc_linear_integer_stream_volumes(streams, nstreams, spec); + calc_linear_integer_volume(linear, volume); for (d = 0;; d ++) { int32_t sum = 0; + unsigned i; - if (d >= length) + if (PA_UNLIKELY(d >= length)) goto finish; - if (!mute && volume->values[channel] != PA_VOLUME_MUTED) { - unsigned i; + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + int32_t v, cv = m->linear[channel].i; + + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; + + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + v = (int32_t) *((uint8_t*) m->ptr) - 0x80; + v = (v * cv) / 0x10000; + } + + sum += v; + m->ptr = (uint8_t*) m->ptr + 1; + } + + sum = (sum * linear[channel]) / 0x10000; + sum = PA_CLAMP_UNLIKELY(sum, -0x80, 0x7F); + *((uint8_t*) data) = (uint8_t) (sum + 0x80); + + data = (uint8_t*) data + 1; + + if (PA_UNLIKELY(++channel >= spec->channels)) + channel = 0; + } + + break; + } + + case PA_SAMPLE_ULAW: { + unsigned channel = 0; + int32_t linear[PA_CHANNELS_MAX]; - for (i = 0; i < nstreams; i++) { - int32_t v; - pa_volume_t cvolume = streams[i].volume.values[channel]; + calc_linear_integer_stream_volumes(streams, nstreams, spec); + calc_linear_integer_volume(linear, volume); - if (d >= streams[i].chunk.length) - goto finish; + for (d = 0;; d ++) { + int32_t sum = 0; + unsigned i; - if (cvolume == PA_VOLUME_MUTED) - v = 0; - else { - v = (int32_t) *((uint8_t*) streams[i].internal + streams[i].chunk.index + d) - 0x80; + if (PA_UNLIKELY(d >= length)) + goto finish; + + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + int32_t v, cv = m->linear[channel].i; - if (cvolume != PA_VOLUME_NORM) - v = (int32_t) (v * pa_sw_volume_to_linear(cvolume)); - } + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; - sum += v; + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + v = (int32_t) st_ulaw2linear16(*((uint8_t*) m->ptr)); + v = (v * cv) / 0x10000; } - if (volume->values[channel] != PA_VOLUME_NORM) - sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel])); + sum += v; + m->ptr = (uint8_t*) m->ptr + 1; + } + + sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF); + sum = (sum * linear[channel]) / 0x10000; + *((uint8_t*) data) = (uint8_t) st_14linear2ulaw(sum >> 2); + + data = (uint8_t*) data + 1; + + if (PA_UNLIKELY(++channel >= spec->channels)) + channel = 0; + } + + break; + } + + case PA_SAMPLE_ALAW: { + unsigned channel = 0; + int32_t linear[PA_CHANNELS_MAX]; + + calc_linear_integer_stream_volumes(streams, nstreams, spec); + calc_linear_integer_volume(linear, volume); + + for (d = 0;; d ++) { + int32_t sum = 0; + unsigned i; + + if (PA_UNLIKELY(d >= length)) + goto finish; + + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + int32_t v, cv = m->linear[channel].i; - sum = PA_CLAMP_UNLIKELY(sum, -0x80, 0x7F); + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; + + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + v = (int32_t) st_alaw2linear16(*((uint8_t*) m->ptr)); + v = (v * cv) / 0x10000; + } + + sum += v; + m->ptr = (uint8_t*) m->ptr + 1; } - *((uint8_t*) data) = (uint8_t) (sum + 0x80); + sum = PA_CLAMP_UNLIKELY(sum, -0x8000, 0x7FFF); + sum = (sum * linear[channel]) / 0x10000; + *((uint8_t*) data) = (uint8_t) st_13linear2alaw(sum >> 3); + data = (uint8_t*) data + 1; - if (++channel >= spec->channels) + if (PA_UNLIKELY(++channel >= spec->channels)) channel = 0; } @@ -287,43 +517,88 @@ size_t pa_mix( case PA_SAMPLE_FLOAT32NE: { unsigned channel = 0; + float linear[PA_CHANNELS_MAX]; + + calc_linear_float_stream_volumes(streams, nstreams, spec); + calc_linear_float_volume(linear, volume); for (d = 0;; d += sizeof(float)) { float sum = 0; + unsigned i; - if (d >= length) + if (PA_UNLIKELY(d >= length)) goto finish; - if (!mute && volume->values[channel] != PA_VOLUME_MUTED) { - unsigned i; + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + float v, cv = m->linear[channel].f; + + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; + + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + v = *((float*) m->ptr); + v *= cv; + } + + sum += v; + m->ptr = (uint8_t*) m->ptr + sizeof(float); + } + + sum *= linear[channel]; + *((float*) data) = sum; - for (i = 0; i < nstreams; i++) { - float v; - pa_volume_t cvolume = streams[i].volume.values[channel]; + data = (uint8_t*) data + sizeof(float); + + if (PA_UNLIKELY(++channel >= spec->channels)) + channel = 0; + } + + break; + } + + case PA_SAMPLE_FLOAT32RE: { + unsigned channel = 0; + float linear[PA_CHANNELS_MAX]; + + calc_linear_float_stream_volumes(streams, nstreams, spec); + calc_linear_float_volume(linear, volume); + + for (d = 0;; d += sizeof(float)) { + float sum = 0; + unsigned i; - if (d >= streams[i].chunk.length) - goto finish; + if (PA_UNLIKELY(d >= length)) + goto finish; - if (cvolume == PA_VOLUME_MUTED) - v = 0; - else { - v = *((float*) ((uint8_t*) streams[i].internal + streams[i].chunk.index + d)); + for (i = 0; i < nstreams; i++) { + pa_mix_info *m = streams + i; + float v, cv = m->linear[channel].f; - if (cvolume != PA_VOLUME_NORM) - v *= pa_sw_volume_to_linear(cvolume); - } + if (PA_UNLIKELY(d >= m->chunk.length)) + goto finish; - sum += v; + if (PA_UNLIKELY(cv <= 0) || PA_UNLIKELY(!!mute) || PA_UNLIKELY(linear[channel] <= 0)) + v = 0; + else { + uint32_t z = *(uint32_t*) m->ptr; + z = PA_UINT32_SWAP(z); + v = *((float*) &z); + v *= cv; } - if (volume->values[channel] != PA_VOLUME_NORM) - sum *= pa_sw_volume_to_linear(volume->values[channel]); + sum += v; + m->ptr = (uint8_t*) m->ptr + sizeof(float); } - *((float*) data) = sum; + sum *= linear[channel]; + *((uint32_t*) data) = PA_UINT32_SWAP(*(uint32_t*) &sum); + data = (uint8_t*) data + sizeof(float); - if (++channel >= spec->channels) + if (PA_UNLIKELY(++channel >= spec->channels)) channel = 0; } @@ -332,7 +607,7 @@ size_t pa_mix( default: pa_log_error("ERROR: Unable to mix audio data of format %s.", pa_sample_format_to_string(spec->format)); - abort(); + pa_assert_not_reached(); } finish: @@ -364,7 +639,7 @@ void pa_volume_memchunk( return; } - ptr = pa_memblock_acquire(c->memblock); + ptr = (uint8_t*) pa_memblock_acquire(c->memblock) + c->index; switch (spec->format) { @@ -374,10 +649,9 @@ void pa_volume_memchunk( unsigned channel; int32_t linear[PA_CHANNELS_MAX]; - for (channel = 0; channel < spec->channels; channel++) - linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000); + calc_linear_integer_volume(linear, volume); - for (channel = 0, d = (int16_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int16_t); n > 0; d++, n--) { + for (channel = 0, d = ptr, n = c->length/sizeof(int16_t); n > 0; d++, n--) { int32_t t; t = (int32_t)(*d); @@ -397,10 +671,9 @@ void pa_volume_memchunk( unsigned channel; int32_t linear[PA_CHANNELS_MAX]; - for (channel = 0; channel < spec->channels; channel++) - linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000); + calc_linear_integer_volume(linear, volume); - for (channel = 0, d = (int16_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int16_t); n > 0; d++, n--) { + for (channel = 0, d = ptr, n = c->length/sizeof(int16_t); n > 0; d++, n--) { int32_t t; t = (int32_t)(PA_INT16_SWAP(*d)); @@ -421,10 +694,9 @@ void pa_volume_memchunk( unsigned channel; int32_t linear[PA_CHANNELS_MAX]; - for (channel = 0; channel < spec->channels; channel++) - linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000); + calc_linear_integer_volume(linear, volume); - for (channel = 0, d = (int32_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int32_t); n > 0; d++, n--) { + for (channel = 0, d = ptr, n = c->length/sizeof(int32_t); n > 0; d++, n--) { int64_t t; t = (int64_t)(*d); @@ -444,10 +716,9 @@ void pa_volume_memchunk( unsigned channel; int32_t linear[PA_CHANNELS_MAX]; - for (channel = 0; channel < spec->channels; channel++) - linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000); + calc_linear_integer_volume(linear, volume); - for (channel = 0, d = (int32_t*) ((uint8_t*) ptr + c->index), n = c->length/sizeof(int32_t); n > 0; d++, n--) { + for (channel = 0, d = ptr, n = c->length/sizeof(int32_t); n > 0; d++, n--) { int64_t t; t = (int64_t)(PA_INT32_SWAP(*d)); @@ -468,10 +739,9 @@ void pa_volume_memchunk( unsigned channel; int32_t linear[PA_CHANNELS_MAX]; - for (channel = 0; channel < spec->channels; channel++) - linear[channel] = (int32_t) (pa_sw_volume_to_linear(volume->values[channel]) * 0x10000); + calc_linear_integer_volume(linear, volume); - for (channel = 0, d = (uint8_t*) ptr + c->index, n = c->length; n > 0; d++, n--) { + for (channel = 0, d = ptr, n = c->length; n > 0; d++, n--) { int32_t t; t = (int32_t) *d - 0x80; @@ -485,20 +755,64 @@ void pa_volume_memchunk( break; } + case PA_SAMPLE_ULAW: { + uint8_t *d; + size_t n; + unsigned channel; + int32_t linear[PA_CHANNELS_MAX]; + + calc_linear_integer_volume(linear, volume); + + for (channel = 0, d = ptr, n = c->length; n > 0; d++, n--) { + int32_t t; + + t = (int32_t) st_ulaw2linear16(*d); + t = (t * linear[channel]) / 0x10000; + t = PA_CLAMP_UNLIKELY(t, -0x8000, 0x7FFF); + *d = (uint8_t) st_14linear2ulaw(t >> 2); + + if (PA_UNLIKELY(++channel >= spec->channels)) + channel = 0; + } + break; + } + + case PA_SAMPLE_ALAW: { + uint8_t *d; + size_t n; + unsigned channel; + int32_t linear[PA_CHANNELS_MAX]; + + calc_linear_integer_volume(linear, volume); + + for (channel = 0, d = ptr, n = c->length; n > 0; d++, n--) { + int32_t t; + + t = (int32_t) st_alaw2linear16(*d); + t = (t * linear[channel]) / 0x10000; + t = PA_CLAMP_UNLIKELY(t, -0x8000, 0x7FFF); + *d = (uint8_t) st_13linear2alaw(t >> 3); + + if (PA_UNLIKELY(++channel >= spec->channels)) + channel = 0; + } + break; + } + case PA_SAMPLE_FLOAT32NE: { float *d; int skip; unsigned n; unsigned channel; - d = (float*) ((uint8_t*) ptr + c->index); + d = ptr; skip = spec->channels * sizeof(float); n = c->length/sizeof(float)/spec->channels; - for (channel = 0; channel < spec->channels ; channel ++) { + for (channel = 0; channel < spec->channels; channel ++) { float v, *t; - if (volume->values[channel] == PA_VOLUME_NORM) + if (PA_UNLIKELY(volume->values[channel] == PA_VOLUME_NORM)) continue; v = (float) pa_sw_volume_to_linear(volume->values[channel]); @@ -508,6 +822,32 @@ void pa_volume_memchunk( break; } + case PA_SAMPLE_FLOAT32RE: { + uint32_t *d; + size_t n; + unsigned channel; + float linear[PA_CHANNELS_MAX]; + + calc_linear_float_volume(linear, volume); + + for (channel = 0, d = ptr, n = c->length/sizeof(float); n > 0; d++, n--) { + float t; + uint32_t z; + + z = PA_UINT32_SWAP(*d); + t = *(float*) &z; + t *= linear[channel]; + z = *(uint32_t*) &t; + *d = PA_UINT32_SWAP(z); + + if (PA_UNLIKELY(++channel >= spec->channels)) + channel = 0; + } + + break; + } + + default: pa_log_warn(" Unable to change volume of format %s.", pa_sample_format_to_string(spec->format)); /* If we cannot change the volume, we just don't do it */ diff --git a/src/pulsecore/sample-util.h b/src/pulsecore/sample-util.h index 0a39d5ca..2ef8f924 100644 --- a/src/pulsecore/sample-util.h +++ b/src/pulsecore/sample-util.h @@ -39,7 +39,14 @@ typedef struct pa_mix_info { pa_memchunk chunk; pa_cvolume volume; void *userdata; - void *internal; /* Used internally by pa_mix(), should not be initialised when calling pa_mix() */ + + /* The following fields are used internally by pa_mix(), should + * not be initialised by the caller of pa_mix(). */ + void *ptr; + union { + int32_t i; + float f; + } linear[PA_CHANNELS_MAX]; } pa_mix_info; size_t pa_mix( @@ -49,7 +56,7 @@ size_t pa_mix( size_t length, const pa_sample_spec *spec, const pa_cvolume *volume, - int mute); + pa_bool_t mute); void pa_volume_memchunk( pa_memchunk*c, -- cgit