test/pcm.c: float format support

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/test/pcm.c b/test/pcm.c
index 7a88f854de3c949d03d3bb9de4f80a9132c9e4d5..abb83e4c30140002de8f938eb92d2809d3034450 100644 (file)
--- a/test/pcm.c
+++ b/test/pcm.c
@@ -43,6 +43,8 @@ static void generate_sine(const snd_pcm_channel_area_t *areas,
        int phys_bps = snd_pcm_format_physical_width(format) / 8;
        int big_endian = snd_pcm_format_big_endian(format) == 1;
        int to_unsigned = snd_pcm_format_unsigned(format) == 1;
+       int is_float = (format == SND_PCM_FORMAT_FLOAT_LE ||
+                       format == SND_PCM_FORMAT_FLOAT_BE);
 
        /* verify and prepare the contents of areas */
        for (chn = 0; chn < channels; chn++) {
@@ -60,8 +62,16 @@ static void generate_sine(const snd_pcm_channel_area_t *areas,
        }
        /* fill the channel areas */
        while (count-- > 0) {
+               union {
+                       float f;
+                       int i;
+               } fval;
                int res, i;
-               res = sin(phase) * maxval;
+               if (is_float) {
+                       fval.f = sin(phase) * maxval;
+                       res = fval.i;
+               } else
+                       res = sin(phase) * maxval;
                if (to_unsigned)
                        res ^= 1U << (format_bits - 1);
                for (chn = 0; chn < channels; chn++) {
@@ -833,8 +843,10 @@ int main(int argc, char *argv[])
                        }
                        if (format == SND_PCM_FORMAT_LAST)
                                format = SND_PCM_FORMAT_S16;
-                       if (!snd_pcm_format_linear(format)) {
-                               printf("Invalid (non-linear) format %s\n",
+                       if (!snd_pcm_format_linear(format) &&
+                           !(format == SND_PCM_FORMAT_FLOAT_LE ||
+                             format == SND_PCM_FORMAT_FLOAT_BE)) {
+                               printf("Invalid (non-linear/float) format %s\n",
                                       optarg);
                                return 1;
                        }