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Move pcm_mixer helper routines to firmware/asm.

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This commit is contained in:
Thomas Martitz 2012-01-06 06:26:48 +01:00
parent 991ae1e395
commit 3c17f28eca
8 changed files with 217 additions and 102 deletions
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104
firmware/pcm_mixer.c
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@ -70,108 +70,8 @@ static struct mixer_channel * active_channels[PCM_MIXER_NUM_CHANNELS+1] IBSS_ATT
#define MAX_IDLE_FRAMES (NATIVE_FREQUENCY*3 / MIX_FRAME_SAMPLES)
static unsigned int idle_counter = 0;
#if (CONFIG_PLATFORM & PLATFORM_NATIVE)
/* Include any implemented CPU-optimized mixdown routines */
#if defined(CPU_ARM)
#if ARM_ARCH >= 6
#include "pcm-mixer-armv6.c"
#elif ARM_ARCH >= 5
#include "pcm-mixer-armv5.c"
#else
#include "pcm-mixer-armv4.c"
#endif /* ARM_ARCH */
#elif defined (CPU_COLDFIRE)
#include "pcm-mixer-coldfire.c"
#endif /* CPU_* */
#endif /* CONFIG_PLATFORM */
/** Generic mixing routines **/
#ifndef MIXER_OPTIMIZED_MIX_SAMPLES
#include "dsp-util.h" /* for clip_sample_16 */
/* Mix channels' samples and apply gain factors */
static FORCE_INLINE void mix_samples(uint32_t *out,
int16_t *src0,
int32_t src0_amp,
int16_t *src1,
int32_t src1_amp,
size_t size)
{
if (src0_amp == MIX_AMP_UNITY && src1_amp == MIX_AMP_UNITY)
{
/* Both are unity amplitude */
do
{
int32_t l = *src0++ + *src1++;
int32_t h = *src0++ + *src1++;
*out++ = (uint16_t)clip_sample_16(l) | (clip_sample_16(h) << 16);
}
while ((size -= 4) > 0);
}
else if (src0_amp != MIX_AMP_UNITY && src1_amp != MIX_AMP_UNITY)
{
/* Neither are unity amplitude */
do
{
int32_t l = (*src0++ * src0_amp >> 16) + (*src1++ * src1_amp >> 16);
int32_t h = (*src0++ * src0_amp >> 16) + (*src1++ * src1_amp >> 16);
*out++ = (uint16_t)clip_sample_16(l) | (clip_sample_16(h) << 16);
}
while ((size -= 4) > 0);
}
else
{
/* One is unity amplitude */
if (src0_amp != MIX_AMP_UNITY)
{
/* Keep unity in src0, amp0 */
int16_t *src_tmp = src0;
src0 = src1;
src1 = src_tmp;
src1_amp = src0_amp;
src0_amp = MIX_AMP_UNITY;
}
do
{
int32_t l = *src0++ + (*src1++ * src1_amp >> 16);
int32_t h = *src0++ + (*src1++ * src1_amp >> 16);
*out++ = (uint16_t)clip_sample_16(l) | (clip_sample_16(h) << 16);
}
while ((size -= 4) > 0);
}
}
#endif /* MIXER_OPTIMIZED_MIX_SAMPLES */
#ifndef MIXER_OPTIMIZED_WRITE_SAMPLES
/* Write channel's samples and apply gain factor */
static FORCE_INLINE void write_samples(uint32_t *out,
int16_t *src,
int32_t amp,
size_t size)
{
if (LIKELY(amp == MIX_AMP_UNITY))
{
/* Channel is unity amplitude */
memcpy(out, src, size);
}
else
{
/* Channel needs amplitude cut */
do
{
int32_t l = *src++ * amp >> 16;
int32_t h = *src++ * amp & 0xffff0000;
*out++ = (uint16_t)l | h;
}
while ((size -= 4) > 0);
}
}
#endif /* MIXER_OPTIMIZED_WRITE_SAMPLES */
/** Mixing routines, CPU optmized **/
#include "asm/pcm-mixer.c"
/** Private generic routines **/