On Wed, May 31, 2017 at 03:53:25PM +0200, Takashi Iwai wrote:
On Wed, 31 May 2017 15:46:44 +0200, guneshwor.o.singh@intel.com wrote:
From: Guneshwor Singh guneshwor.o.singh@intel.com
Get PCM sample rate from rate name similar to snd_pcm_format_value() which retrieves format from format name.
Signed-off-by: Guneshwor Singh guneshwor.o.singh@intel.com
The enum is only for internal, so it shouldn't be exposed as a public API. I don't mind if it's only for alsa-lib internals, though.
It is only for alsa-lib internals and required to be used in topology conf parsing. Is it okay to have the enum in src/topology/pcm.c ?
thanks,
Takashi
include/pcm.h | 38 ++++++++++++++++++++++++++++++++++++++ src/pcm/pcm.c | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 75 insertions(+)
diff --git a/include/pcm.h b/include/pcm.h index 0be1a321..81bc55b1 100644 --- a/include/pcm.h +++ b/include/pcm.h @@ -119,6 +119,43 @@ typedef enum _snd_pcm_access { SND_PCM_ACCESS_LAST = SND_PCM_ACCESS_RW_NONINTERLEAVED } snd_pcm_access_t;
+/** PCM sample rate */ +typedef enum _snd_pcm_rates {
- /** Unknown */
- SND_PCM_RATE_UNKNOWN = -1,
- /** 5512 Hz sample rate */
- SND_PCM_RATE_5512 = 0,
- /** 8000 Hz sample rate */
- SND_PCM_RATE_8000,
- /** 11025 Hz sample rate */
- SND_PCM_RATE_11025,
- /** 16000 Hz sample rate */
- SND_PCM_RATE_16000,
- /** 22050 Hz sample rate */
- SND_PCM_RATE_22050,
- /** 32000 Hz sample rate */
- SND_PCM_RATE_32000,
- /** 44100 Hz sample rate */
- SND_PCM_RATE_44100,
- /** 48000 Hz sample rate */
- SND_PCM_RATE_48000,
- /** 64000 Hz sample rate */
- SND_PCM_RATE_64000,
- /** 88200 Hz sample rate */
- SND_PCM_RATE_88200,
- /** 96000 Hz sample rate */
- SND_PCM_RATE_96000,
- /** 176400 Hz sample rate */
- SND_PCM_RATE_176400,
- /** 192000 Hz sample rate */
- SND_PCM_RATE_192000,
- /** continuous range within rate_min and rate_max */
- SND_PCM_RATE_CONTINUOUS = 30,
- /** more continuous range */
- SND_PCM_RATE_KNOT = 31,
- SND_PCM_RATE_LAST = SND_PCM_RATE_KNOT,
+} snd_pcm_rates_t;
/** PCM sample format */ typedef enum _snd_pcm_format { /** Unknown */ @@ -1047,6 +1084,7 @@ const char *snd_pcm_format_description(const snd_pcm_format_t format); const char *snd_pcm_subformat_name(const snd_pcm_subformat_t subformat); const char *snd_pcm_subformat_description(const snd_pcm_subformat_t subformat); snd_pcm_format_t snd_pcm_format_value(const char* name); +snd_pcm_rates_t snd_pcm_rate_value(const char* name); const char *snd_pcm_tstamp_mode_name(const snd_pcm_tstamp_t mode); const char *snd_pcm_state_name(const snd_pcm_state_t state);
diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c index 200b10c2..bff1b949 100644 --- a/src/pcm/pcm.c +++ b/src/pcm/pcm.c @@ -1722,6 +1722,7 @@ static int __snd_pcm_poll_revents(snd_pcm_t *pcm, struct pollfd *pfds, #define START(v) [SND_PCM_START_##v] = #v #define HW_PARAM(v) [SND_PCM_HW_PARAM_##v] = #v #define SW_PARAM(v) [SND_PCM_SW_PARAM_##v] = #v +#define RATE(v) [SND_PCM_RATE_##v] = #v #define FORMAT(v) [SND_PCM_FORMAT_##v] = #v #define SUBFORMAT(v) [SND_PCM_SUBFORMAT_##v] = #v
@@ -1754,6 +1755,24 @@ static const char *const snd_pcm_access_names[] = { ACCESS(RW_NONINTERLEAVED), };
+static const char *const snd_pcm_rate_names[] = {
- RATE(5512),
- RATE(8000),
- RATE(11025),
- RATE(16000),
- RATE(22050),
- RATE(32000),
- RATE(44100),
- RATE(48000),
- RATE(64000),
- RATE(88200),
- RATE(96000),
- RATE(176400),
- RATE(192000),
- RATE(CONTINUOUS),
- RATE(KNOT),
+};
static const char *const snd_pcm_format_names[] = { FORMAT(S8), FORMAT(U8), @@ -1978,6 +1997,24 @@ const char *snd_pcm_format_description(snd_pcm_format_t format) }
/**
- \brief get PCM sample rate from name
- \param name PCM sample rate name (case insensitive)
- \return PCM sample rate
- */
+snd_pcm_rates_t snd_pcm_rate_value(const char* name) +{
- snd_pcm_rates_t rate;
- for (rate = 0; rate <= SND_PCM_RATE_LAST; rate++) {
if (snd_pcm_rate_names[rate] &&strcasecmp(name, snd_pcm_rate_names[rate]) == 0) {return rate;}- }
- return SND_PCM_RATE_UNKNOWN;
+}
+/**
- \brief get PCM sample format from name
- \param name PCM sample format name (case insensitive)
- \return PCM sample format
-- 2.13.0