From 76e0c15ce430e4ae04d4cb14760be0bf20365500 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 2 Jun 2009 16:30:06 +0200 Subject: Add PCM rates query support for PCM rate plugins Follow the new PCM rate-plugin protocol to support the rate range queries, etc. Signed-off-by: Takashi Iwai --- rate/rate_samplerate.c | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) (limited to 'rate') diff --git a/rate/rate_samplerate.c b/rate/rate_samplerate.c index e366db0..53a0627 100644 --- a/rate/rate_samplerate.c +++ b/rate/rate_samplerate.c @@ -137,6 +137,20 @@ static void pcm_src_close(void *obj) free(obj); } +#if SND_PCM_RATE_PLUGIN_VERSION >= 0x010002 +static int get_supported_rates(void *obj, unsigned int *rate_min, + unsigned int *rate_max) +{ + *rate_min = *rate_max = 0; /* both unlimited */ + return 0; +} + +static void dump(void *obj, snd_output_t *out) +{ + snd_output_printf(out, "Converter: libsamplerate\n"); +} +#endif + static snd_pcm_rate_ops_t pcm_src_ops = { .close = pcm_src_close, .init = pcm_src_init, @@ -146,6 +160,11 @@ static snd_pcm_rate_ops_t pcm_src_ops = { .convert_s16 = pcm_src_convert_s16, .input_frames = input_frames, .output_frames = output_frames, +#if SND_PCM_RATE_PLUGIN_VERSION >= 0x010002 + .version = SND_PCM_RATE_PLUGIN_VERSION, + .get_supported_rates = get_supported_rates, + .dump = dump, +#endif }; static int pcm_src_open(unsigned int version, void **objp, @@ -153,18 +172,24 @@ static int pcm_src_open(unsigned int version, void **objp, { struct rate_src *rate; +#if SND_PCM_RATE_PLUGIN_VERSION < 0x010002 if (version != SND_PCM_RATE_PLUGIN_VERSION) { fprintf(stderr, "Invalid rate plugin version %x\n", version); return -EINVAL; } - +#endif rate = calloc(1, sizeof(*rate)); if (! rate) return -ENOMEM; rate->converter = type; *objp = rate; - *ops = pcm_src_ops; +#if SND_PCM_RATE_PLUGIN_VERSION >= 0x010002 + if (version == 0x010001) + memcpy(ops, &pcm_src_ops, sizeof(snd_pcm_rate_old_ops_t)); + else +#endif + *ops = pcm_src_ops; return 0; } -- cgit