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pcm_format: fix 32-to-24 bit conversion (the "silence" bug) 

D'oh, we were reading 16 bit integers instead of 32 bit integers!
That caused silence when trying to play a 32 bit input file on a 24
bit sound card (e.g. USB sound chips with 24 bit packed samples).
This commit is contained in:
Max Kellermann 2011-09-08 23:47:32 +02:00
parent 5469941f2b
commit 5cf4ce9318
2 changed files with 3 additions and 2 deletions
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1
NEWS
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@ -1,4 +1,5 @@
ver 0.16.5 (2010/??/??) ver 0.16.5 (2010/??/??)
* pcm_format: fix 32-to-24 bit conversion (the "silence" bug)
ver 0.16.4 (2011/09/01) ver 0.16.4 (2011/09/01)

4
src/pcm_format.c
View File

@ -143,7 +143,7 @@ pcm_convert_16_to_24(int32_t *out, const int16_t *in,
} }
static void static void
pcm_convert_32_to_24(int32_t *out, const int16_t *in, pcm_convert_32_to_24(int32_t *out, const int32_t *in,
unsigned num_samples) unsigned num_samples)
{ {
while (num_samples > 0) { while (num_samples > 0) {
@ -197,7 +197,7 @@ pcm_convert_to_24(struct pcm_buffer *buffer,
*dest_size_r = num_samples * sizeof(*dest); *dest_size_r = num_samples * sizeof(*dest);
dest = pcm_buffer_get(buffer, *dest_size_r); dest = pcm_buffer_get(buffer, *dest_size_r);
pcm_convert_32_to_24(dest, (const int16_t *)src, pcm_convert_32_to_24(dest, (const int32_t *)src,
num_samples); num_samples);
return dest; return dest;
} }