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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "pcm_format.h"
#include "pcm_dither.h"
#include "pcm_buffer.h"
#include "pcm_pack.h"
#include "pcm_utils.h"
static void
pcm_convert_8_to_16(int16_t *out, const int8_t *in, const int8_t *in_end)
{
while (in < in_end) {
*out++ = *in++ << 8;
}
}
static void
pcm_convert_24_to_16(struct pcm_dither *dither,
int16_t *out, const int32_t *in, const int32_t *in_end)
{
pcm_dither_24_to_16(dither, out, in, in_end);
}
static void
pcm_convert_32_to_16(struct pcm_dither *dither,
int16_t *out, const int32_t *in, const int32_t *in_end)
{
pcm_dither_32_to_16(dither, out, in, in_end);
}
static void
pcm_convert_float_to_16(int16_t *out, const float *in, const float *in_end)
{
const unsigned OUT_BITS = 16;
const float factor = 1 << (OUT_BITS - 1);
while (in < in_end) {
int sample = *in++ * factor;
*out++ = pcm_clamp_16(sample);
}
}
static int16_t *
pcm_allocate_8_to_16(struct pcm_buffer *buffer,
const int8_t *src, size_t src_size, size_t *dest_size_r)
{
int16_t *dest;
*dest_size_r = src_size / sizeof(*src) * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_8_to_16(dest, src, pcm_end_pointer(src, src_size));
return dest;
}
static int32_t *
pcm_allocate_24_to_24p32(struct pcm_buffer *buffer, const uint8_t *src,
size_t src_size, size_t *dest_size_r)
{
int32_t *dest;
*dest_size_r = src_size / 3 * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_unpack_24(dest, src, pcm_end_pointer(src, src_size), false);
return dest;
}
static int16_t *
pcm_allocate_24_to_16(struct pcm_buffer *buffer, struct pcm_dither *dither,
const uint8_t *src, size_t src_size, size_t *dest_size_r)
{
/* convert to S24_P32 first */
size_t tmp_size;
int32_t *tmp = pcm_allocate_24_to_24p32(buffer, src, src_size,
&tmp_size);
/* convert to 16 bit in-place */
int16_t *dest = (int16_t *)tmp;
*dest_size_r = tmp_size / sizeof(*tmp) * sizeof(*dest);
pcm_convert_24_to_16(dither, dest, tmp, pcm_end_pointer(tmp, tmp_size));
return dest;
}
static int16_t *
pcm_allocate_24p32_to_16(struct pcm_buffer *buffer, struct pcm_dither *dither,
const int32_t *src, size_t src_size,
size_t *dest_size_r)
{
int16_t *dest;
*dest_size_r = src_size / 2;
assert(*dest_size_r == src_size / sizeof(*src) * sizeof(*dest));
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_24_to_16(dither, dest, src,
pcm_end_pointer(src, src_size));
return dest;
}
static int16_t *
pcm_allocate_32_to_16(struct pcm_buffer *buffer, struct pcm_dither *dither,
const int32_t *src, size_t src_size,
size_t *dest_size_r)
{
int16_t *dest;
*dest_size_r = src_size / 2;
assert(*dest_size_r == src_size / sizeof(*src) * sizeof(*dest));
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_32_to_16(dither, dest, src,
pcm_end_pointer(src, src_size));
return dest;
}
static int16_t *
pcm_allocate_float_to_16(struct pcm_buffer *buffer,
const float *src, size_t src_size,
size_t *dest_size_r)
{
int16_t *dest;
*dest_size_r = src_size / 2;
assert(*dest_size_r == src_size / sizeof(*src) * sizeof(*dest));
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_float_to_16(dest, src,
pcm_end_pointer(src, src_size));
return dest;
}
const int16_t *
pcm_convert_to_16(struct pcm_buffer *buffer, struct pcm_dither *dither,
enum sample_format src_format, const void *src,
size_t src_size, size_t *dest_size_r)
{
assert(src_size % sample_format_size(src_format) == 0);
switch (src_format) {
case SAMPLE_FORMAT_UNDEFINED:
break;
case SAMPLE_FORMAT_S8:
return pcm_allocate_8_to_16(buffer,
src, src_size, dest_size_r);
case SAMPLE_FORMAT_S16:
*dest_size_r = src_size;
return src;
case SAMPLE_FORMAT_S24:
return pcm_allocate_24_to_16(buffer, dither,
src, src_size, dest_size_r);
case SAMPLE_FORMAT_S24_P32:
return pcm_allocate_24p32_to_16(buffer, dither, src, src_size,
dest_size_r);
case SAMPLE_FORMAT_S32:
return pcm_allocate_32_to_16(buffer, dither, src, src_size,
dest_size_r);
case SAMPLE_FORMAT_FLOAT:
return pcm_allocate_float_to_16(buffer, src, src_size,
dest_size_r);
}
return NULL;
}
static void
pcm_convert_8_to_24(int32_t *out, const int8_t *in, const int8_t *in_end)
{
while (in < in_end)
*out++ = *in++ << 16;
}
static void
pcm_convert_16_to_24(int32_t *out, const int16_t *in, const int16_t *in_end)
{
while (in < in_end)
*out++ = *in++ << 8;
}
static void
pcm_convert_32_to_24(int32_t *restrict out,
const int32_t *restrict in,
const int32_t *restrict in_end)
{
while (in < in_end)
*out++ = *in++ >> 8;
}
static void
pcm_convert_float_to_24(int32_t *out, const float *in, const float *in_end)
{
const unsigned OUT_BITS = 24;
const float factor = 1 << (OUT_BITS - 1);
while (in < in_end) {
int sample = *in++ * factor;
*out++ = pcm_clamp_24(sample);
}
}
static int32_t *
pcm_allocate_8_to_24(struct pcm_buffer *buffer,
const int8_t *src, size_t src_size, size_t *dest_size_r)
{
int32_t *dest;
*dest_size_r = src_size / sizeof(*src) * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_8_to_24(dest, src, pcm_end_pointer(src, src_size));
return dest;
}
static int32_t *
pcm_allocate_16_to_24(struct pcm_buffer *buffer,
const int16_t *src, size_t src_size, size_t *dest_size_r)
{
int32_t *dest;
*dest_size_r = src_size * 2;
assert(*dest_size_r == src_size / sizeof(*src) * sizeof(*dest));
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_16_to_24(dest, src, pcm_end_pointer(src, src_size));
return dest;
}
static int32_t *
pcm_allocate_32_to_24(struct pcm_buffer *buffer,
const int32_t *src, size_t src_size, size_t *dest_size_r)
{
*dest_size_r = src_size;
int32_t *dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_32_to_24(dest, src, pcm_end_pointer(src, src_size));
return dest;
}
static int32_t *
pcm_allocate_float_to_24(struct pcm_buffer *buffer,
const float *src, size_t src_size,
size_t *dest_size_r)
{
*dest_size_r = src_size;
int32_t *dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_float_to_24(dest, src, pcm_end_pointer(src, src_size));
return dest;
}
const int32_t *
pcm_convert_to_24(struct pcm_buffer *buffer,
enum sample_format src_format, const void *src,
size_t src_size, size_t *dest_size_r)
{
assert(src_size % sample_format_size(src_format) == 0);
switch (src_format) {
case SAMPLE_FORMAT_UNDEFINED:
break;
case SAMPLE_FORMAT_S8:
return pcm_allocate_8_to_24(buffer,
src, src_size, dest_size_r);
case SAMPLE_FORMAT_S16:
return pcm_allocate_16_to_24(buffer,
src, src_size, dest_size_r);
case SAMPLE_FORMAT_S24:
return pcm_allocate_24_to_24p32(buffer, src, src_size,
dest_size_r);
case SAMPLE_FORMAT_S24_P32:
*dest_size_r = src_size;
return src;
case SAMPLE_FORMAT_S32:
return pcm_allocate_32_to_24(buffer, src, src_size,
dest_size_r);
case SAMPLE_FORMAT_FLOAT:
return pcm_allocate_float_to_24(buffer, src, src_size,
dest_size_r);
}
return NULL;
}
static void
pcm_convert_8_to_32(int32_t *out, const int8_t *in, const int8_t *in_end)
{
while (in < in_end)
*out++ = *in++ << 24;
}
static void
pcm_convert_16_to_32(int32_t *out, const int16_t *in, const int16_t *in_end)
{
while (in < in_end)
*out++ = *in++ << 16;
}
static void
pcm_convert_24_to_32(int32_t *restrict out,
const int32_t *restrict in,
const int32_t *restrict in_end)
{
while (in < in_end)
*out++ = *in++ << 8;
}
static int32_t *
pcm_allocate_8_to_32(struct pcm_buffer *buffer,
const int8_t *src, size_t src_size, size_t *dest_size_r)
{
int32_t *dest;
*dest_size_r = src_size / sizeof(*src) * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_8_to_32(dest, src, pcm_end_pointer(src, src_size));
return dest;
}
static int32_t *
pcm_allocate_16_to_32(struct pcm_buffer *buffer,
const int16_t *src, size_t src_size, size_t *dest_size_r)
{
int32_t *dest;
*dest_size_r = src_size * 2;
assert(*dest_size_r == src_size / sizeof(*src) * sizeof(*dest));
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_16_to_32(dest, src, pcm_end_pointer(src, src_size));
return dest;
}
static int32_t *
pcm_allocate_24_to_32(struct pcm_buffer *buffer,
const uint8_t *src,
size_t src_size, size_t *dest_size_r)
{
/* convert to S24_P32 first */
int32_t *dest = pcm_allocate_24_to_24p32(buffer, src, src_size,
dest_size_r);
/* convert to 32 bit in-place */
pcm_convert_24_to_32(dest, dest, pcm_end_pointer(dest, *dest_size_r));
return dest;
}
static int32_t *
pcm_allocate_24p32_to_32(struct pcm_buffer *buffer,
const int32_t *src, size_t src_size,
size_t *dest_size_r)
{
*dest_size_r = src_size;
int32_t *dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_24_to_32(dest, src, pcm_end_pointer(src, src_size));
return dest;
}
static int32_t *
pcm_allocate_float_to_32(struct pcm_buffer *buffer,
const float *src, size_t src_size,
size_t *dest_size_r)
{
/* convert to S24_P32 first */
int32_t *dest = pcm_allocate_float_to_24(buffer, src, src_size,
dest_size_r);
/* convert to 32 bit in-place */
pcm_convert_24_to_32(dest, dest, pcm_end_pointer(dest, *dest_size_r));
return dest;
}
const int32_t *
pcm_convert_to_32(struct pcm_buffer *buffer,
enum sample_format src_format, const void *src,
size_t src_size, size_t *dest_size_r)
{
assert(src_size % sample_format_size(src_format) == 0);
switch (src_format) {
case SAMPLE_FORMAT_UNDEFINED:
break;
case SAMPLE_FORMAT_S8:
return pcm_allocate_8_to_32(buffer, src, src_size,
dest_size_r);
case SAMPLE_FORMAT_S16:
return pcm_allocate_16_to_32(buffer, src, src_size,
dest_size_r);
case SAMPLE_FORMAT_S24:
return pcm_allocate_24_to_32(buffer, src, src_size,
dest_size_r);
case SAMPLE_FORMAT_S24_P32:
return pcm_allocate_24p32_to_32(buffer, src, src_size,
dest_size_r);
case SAMPLE_FORMAT_S32:
*dest_size_r = src_size;
return src;
case SAMPLE_FORMAT_FLOAT:
return pcm_allocate_float_to_32(buffer, src, src_size,
dest_size_r);
}
return NULL;
}
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