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pcm_format: pass an "end" pointer instead of a sample count

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This commit is contained in:
Max Kellermann 2011-10-19 22:36:47 +02:00
parent dfb98417b3
commit c53edeeb6c
1 changed files with 28 additions and 58 deletions
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86
src/pcm_format.c
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@ -25,12 +25,10 @@
#include "pcm_utils.h"
static void
pcm_convert_8_to_16(int16_t *out, const int8_t *in,
unsigned num_samples)
pcm_convert_8_to_16(int16_t *out, const int8_t *in, const int8_t *in_end)
{
while (num_samples > 0) {
while (in < in_end) {
*out++ = *in++ << 8;
--num_samples;
}
}
@ -80,7 +78,7 @@ pcm_convert_to_16(struct pcm_buffer *buffer, struct pcm_dither *dither,
pcm_convert_8_to_16(dest,
(const int8_t *)src,
num_samples);
src_end);
return dest;
case SAMPLE_FORMAT_S16:
@ -125,33 +123,24 @@ pcm_convert_to_16(struct pcm_buffer *buffer, struct pcm_dither *dither,
}
static void
pcm_convert_8_to_24(int32_t *out, const int8_t *in,
unsigned num_samples)
pcm_convert_8_to_24(int32_t *out, const int8_t *in, const int8_t *in_end)
{
while (num_samples > 0) {
while (in < in_end)
*out++ = *in++ << 16;
--num_samples;
}
}
static void
pcm_convert_16_to_24(int32_t *out, const int16_t *in,
unsigned num_samples)
pcm_convert_16_to_24(int32_t *out, const int16_t *in, const int16_t *in_end)
{
while (num_samples > 0) {
while (in < in_end)
*out++ = *in++ << 8;
--num_samples;
}
}
static void
pcm_convert_32_to_24(int32_t *out, const int32_t *in,
unsigned num_samples)
pcm_convert_32_to_24(int32_t *out, const int32_t *in, const int32_t *in_end)
{
while (num_samples > 0) {
while (in < in_end)
*out++ = *in++ >> 8;
--num_samples;
}
}
const int32_t *
@ -161,6 +150,7 @@ pcm_convert_to_24(struct pcm_buffer *buffer,
{
assert(src_size % sample_format_size(src_format) == 0);
const void *src_end = pcm_end_pointer(src, src_size);
unsigned num_samples;
int32_t *dest;
@ -169,21 +159,17 @@ pcm_convert_to_24(struct pcm_buffer *buffer,
break;
case SAMPLE_FORMAT_S8:
num_samples = src_size;
*dest_size_r = src_size * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_8_to_24(dest, (const int8_t *)src,
num_samples);
pcm_convert_8_to_24(dest, src, src_end);
return dest;
case SAMPLE_FORMAT_S16:
num_samples = src_size / 2;
*dest_size_r = num_samples * sizeof(*dest);
*dest_size_r = src_size / 2 * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_16_to_24(dest, (const int16_t *)src,
num_samples);
pcm_convert_16_to_24(dest, src, src_end);
return dest;
case SAMPLE_FORMAT_S24:
@ -197,12 +183,10 @@ pcm_convert_to_24(struct pcm_buffer *buffer,
return src;
case SAMPLE_FORMAT_S32:
num_samples = src_size / 4;
*dest_size_r = num_samples * sizeof(*dest);
*dest_size_r = src_size / 4 * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_32_to_24(dest, (const int32_t *)src,
num_samples);
pcm_convert_32_to_24(dest, src, src_end);
return dest;
}
@ -210,33 +194,24 @@ pcm_convert_to_24(struct pcm_buffer *buffer,
}
static void
pcm_convert_8_to_32(int32_t *out, const int8_t *in,
unsigned num_samples)
pcm_convert_8_to_32(int32_t *out, const int8_t *in, const int8_t *in_end)
{
while (num_samples > 0) {
while (in < in_end)
*out++ = *in++ << 24;
--num_samples;
}
}
static void
pcm_convert_16_to_32(int32_t *out, const int16_t *in,
unsigned num_samples)
pcm_convert_16_to_32(int32_t *out, const int16_t *in, const int16_t *in_end)
{
while (num_samples > 0) {
while (in < in_end)
*out++ = *in++ << 16;
--num_samples;
}
}
static void
pcm_convert_24_to_32(int32_t *out, const int32_t *in,
unsigned num_samples)
pcm_convert_24_to_32(int32_t *out, const int32_t *in, const int32_t *in_end)
{
while (num_samples > 0) {
while (in < in_end)
*out++ = *in++ << 8;
--num_samples;
}
}
const int32_t *
@ -246,6 +221,7 @@ pcm_convert_to_32(struct pcm_buffer *buffer,
{
assert(src_size % sample_format_size(src_format) == 0);
const void *src_end = pcm_end_pointer(src, src_size);
unsigned num_samples;
int32_t *dest;
@ -254,21 +230,17 @@ pcm_convert_to_32(struct pcm_buffer *buffer,
break;
case SAMPLE_FORMAT_S8:
num_samples = src_size;
*dest_size_r = src_size * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_8_to_32(dest, (const int8_t *)src,
num_samples);
pcm_convert_8_to_32(dest, src, src_end);
return dest;
case SAMPLE_FORMAT_S16:
num_samples = src_size / 2;
*dest_size_r = num_samples * sizeof(*dest);
*dest_size_r = src_size / 2 * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_16_to_32(dest, (const int16_t *)src,
num_samples);
pcm_convert_16_to_32(dest, src, src_end);
return dest;
case SAMPLE_FORMAT_S24:
@ -279,16 +251,14 @@ pcm_convert_to_32(struct pcm_buffer *buffer,
/* convert to 32 bit in-place */
*dest_size_r = num_samples * sizeof(*dest);
pcm_convert_24_to_32(dest, dest, num_samples);
pcm_convert_24_to_32(dest, dest, dest + num_samples);
return dest;
case SAMPLE_FORMAT_S24_P32:
num_samples = src_size / 4;
*dest_size_r = num_samples * sizeof(*dest);
*dest_size_r = src_size / 4 * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_24_to_32(dest, (const int32_t *)src,
num_samples);
pcm_convert_24_to_32(dest, src, src_end);
return dest;
case SAMPLE_FORMAT_S32: