From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: [PATCH 1/3] pcm: add support to get PCM sample rate from name Date: Wed, 31 May 2017 15:53:25 +0200 Message-ID: References: <20170531134646.9081-1-guneshwor.o.singh@intel.com> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id 0F709266BED for ; Wed, 31 May 2017 15:53:26 +0200 (CEST) In-Reply-To: <20170531134646.9081-1-guneshwor.o.singh@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: guneshwor.o.singh@intel.com Cc: vinod.koul@intel.com, mengdong.lin@intel.com, alsa-devel@alsa-project.org, liam.r.girdwood@intel.com List-Id: alsa-devel@alsa-project.org On Wed, 31 May 2017 15:46:44 +0200, wrote: > > From: Guneshwor Singh > > Get PCM sample rate from rate name similar to snd_pcm_format_value() which > retrieves format from format name. > > Signed-off-by: Guneshwor Singh 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. 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 > >