ALSA: compress: add num_sample_rates in snd_codec_desc
Vinod Koul [Tue, 7 Jan 2014 16:25:42 +0000 (21:25 +0530)]
this gives ability to convey the valid values of supported rates in
sample_rates array

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
(cherry picked from commit 929559be6d2c494e25bb58b730da4a78c1459e7b)
Signed-off-by: Yuchen Song <yuchens@nvidia.com>
Change-Id: Icfbb6d272a70c0a94719613c00bac18c5a0e3f87

include/uapi/sound/compress_params.h

index b62b24b..165e705 100644 (file)
@@ -326,6 +326,7 @@ union snd_codec_options {
 /** struct snd_codec_desc - description of codec capabilities
  * @max_ch: Maximum number of audio channels
  * @sample_rates: Sampling rates in Hz, use values like 48000 for this
+ * @num_sample_rates: Number of valid values in sample_rates array
  * @bit_rate: Indexed array containing supported bit rates
  * @num_bitrates: Number of valid values in bit_rate array
  * @rate_control: value is specified by SND_RATECONTROLMODE defines.
@@ -348,6 +349,7 @@ union snd_codec_options {
 struct snd_codec_desc {
        __u32 max_ch;
        __u32 sample_rates[MAX_NUM_SAMPLE_RATES];
+       __u32 num_sample_rates;
        __u32 bit_rate[MAX_NUM_BITRATES];
        __u32 num_bitrates;
        __u32 rate_control;