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authorMax Kellermann <max@duempel.org>2011-10-08 13:41:39 +0200
committerMax Kellermann <max@duempel.org>2011-10-20 02:24:25 +0200
commit725e48fce4e4ad08a2a9aa0a64c3e79df5636108 (patch)
tree48c95e6a1ce0fd0a4b6c3b4e08218e2cbceb357b /src/pcm_resample.c
parent43816c268ba71b0946986f28146213aac99c9872 (diff)
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pcm_resample: add function pcm_resample_float()
A version of the resampler that doesn't need int->float->int conversion.
Diffstat (limited to '')
-rw-r--r--src/pcm_resample.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/pcm_resample.c b/src/pcm_resample.c
index 26f1431e8..892d1c633 100644
--- a/src/pcm_resample.c
+++ b/src/pcm_resample.c
@@ -76,6 +76,34 @@ void pcm_resample_deinit(struct pcm_resample_state *state)
pcm_resample_fallback_deinit(state);
}
+const float *
+pcm_resample_float(struct pcm_resample_state *state,
+ unsigned channels,
+ unsigned src_rate,
+ const float *src_buffer, size_t src_size,
+ unsigned dest_rate, size_t *dest_size_r,
+ GError **error_r)
+{
+#ifdef HAVE_LIBSAMPLERATE
+ if (pcm_resample_lsr_enabled())
+ return pcm_resample_lsr_float(state, channels,
+ src_rate, src_buffer, src_size,
+ dest_rate, dest_size_r,
+ error_r);
+#else
+ (void)error_r;
+#endif
+
+ /* sizeof(float)==sizeof(int32_t); the fallback resampler does
+ not do any math on the sample values, so this hack is
+ possible: */
+ return (const float *)
+ pcm_resample_fallback_32(state, channels,
+ src_rate, (const int32_t *)src_buffer,
+ src_size,
+ dest_rate, dest_size_r);
+}
+
const int16_t *
pcm_resample_16(struct pcm_resample_state *state,
unsigned channels,