[igt-dev] [PATCH i-g-t 3/5] lib/igt_audio: add support for S24_LE and S32_LE signal generation
Simon Ser
simon.ser at intel.com
Fri May 17 16:02:40 UTC 2019
This adds two new helpers to generate S24_LE and S32_LE signals.
Signed-off-by: Simon Ser <simon.ser at intel.com>
---
lib/igt_audio.c | 30 ++++++++++++++++++++++++++++++
lib/igt_audio.h | 4 ++++
2 files changed, 34 insertions(+)
diff --git a/lib/igt_audio.c b/lib/igt_audio.c
index 90d16fe4bd11..876084a994c3 100644
--- a/lib/igt_audio.c
+++ b/lib/igt_audio.c
@@ -262,6 +262,36 @@ void audio_signal_fill_s16_le(struct audio_signal *signal, int16_t *buffer,
free(tmp);
}
+void audio_signal_fill_s24_le(struct audio_signal *signal, int32_t *buffer,
+ size_t samples)
+{
+ double *tmp;
+ size_t i;
+
+ tmp = malloc(sizeof(double) * signal->channels * samples);
+ audio_signal_fill(signal, tmp, samples);
+
+ for (i = 0; i < signal->channels * samples; ++i)
+ buffer[i] = 0xFFFFFF * tmp[i];
+
+ free(tmp);
+}
+
+void audio_signal_fill_s32_le(struct audio_signal *signal, int32_t *buffer,
+ size_t samples)
+{
+ double *tmp;
+ size_t i;
+
+ tmp = malloc(sizeof(double) * signal->channels * samples);
+ audio_signal_fill(signal, tmp, samples);
+
+ for (i = 0; i < signal->channels * samples; ++i)
+ buffer[i] = UINT32_MAX * tmp[i];
+
+ free(tmp);
+}
+
/**
* Checks that frequencies specified in signal, and only those, are included
* in the input data.
diff --git a/lib/igt_audio.h b/lib/igt_audio.h
index f915d55d63fc..c8de70871faa 100644
--- a/lib/igt_audio.h
+++ b/lib/igt_audio.h
@@ -44,6 +44,10 @@ void audio_signal_fill(struct audio_signal *signal, double *buffer,
size_t buffer_len);
void audio_signal_fill_s16_le(struct audio_signal *signal, int16_t *buffer,
size_t buffer_len);
+void audio_signal_fill_s24_le(struct audio_signal *signal, int32_t *buffer,
+ size_t buffer_len);
+void audio_signal_fill_s32_le(struct audio_signal *signal, int32_t *buffer,
+ size_t buffer_len);
bool audio_signal_detect(struct audio_signal *signal, int sampling_rate,
int channel, const double *samples, size_t samples_len);
size_t audio_extract_channel_s32_le(double *dst, size_t dst_cap,
--
2.21.0
More information about the igt-dev
mailing list