changed frames to seconds

encode.c

@@ -57,14 +57,12 @@ int main(int argc, char **argv)
 
 	uint8_t *pixel = (uint8_t *)ppm_p + strlen(ppm_head);
 
-	float rate = atoi(argv[3]);
+	if (!open_pcm_write(&pcm, argv[2], atoi(argv[3]), 1, 37.5)) {
-	int frames = 37.5 * rate;
-	if (!open_pcm_write(&pcm, argv[2], atoi(argv[3]), 1, frames)) {
 		fprintf(stderr, "couldnt open output %s\n", argv[2]);
 		return 1;
 	}
 
-	rate = rate_pcm(pcm);
+	float rate = rate_pcm(pcm);
 	channels = channels_pcm(pcm);
 
 	buff = (short *)malloc(sizeof(short)*channels);

pcm.c

@@ -53,12 +53,12 @@ int open_pcm_read(pcm_t **p, char *name)
 	return 0;
 }
 
-int open_pcm_write(pcm_t **p, char *name, int rate, int channels, int frames)
+int open_pcm_write(pcm_t **p, char *name, int rate, int channels, float seconds)
 {
 	if (strstr(name, "plughw:") == name || strstr(name, "hw:") == name || strstr(name, "default") == name)
 		return open_alsa_write(p, name, rate, channels);
 	if (strstr(name, ".wav") == (name + (strlen(name) - strlen(".wav"))))
-		return open_wav_write(p, name, rate, channels, frames);
+		return open_wav_write(p, name, rate, channels, seconds);
 	return 0;
 }
 

pcm.h

@@ -24,7 +24,7 @@ int channels_pcm(pcm_t *);
 int read_pcm(pcm_t *, short *, int);
 int write_pcm(pcm_t *, short *, int);
 int open_pcm_read(pcm_t **, char *);
-int open_pcm_write(pcm_t **, char *, int, int, int);
+int open_pcm_write(pcm_t **, char *, int, int, float);
 
 #endif
 

wav.c

@@ -123,7 +123,7 @@ int open_wav_read(pcm_t **p, char *name)
 	return 1;
 }
 
-int open_wav_write(pcm_t **p, char *name, int rate, int channels, int frames)
+int open_wav_write(pcm_t **p, char *name, int rate, int channels, float seconds)
 {
 	wav_t *wav = (wav_t *)malloc(sizeof(wav_t));
 	wav->close = close_wav;
@@ -131,6 +131,7 @@ int open_wav_write(pcm_t **p, char *name, int rate, int channels, int frames)
 	wav->rate = rate_wav;
 	wav->channels = channels_wav;
 	wav->rw = write_wav;
+	int frames = seconds * rate;
 	wav->size = frames * channels * sizeof(short) + sizeof(wav_head_t);
 	if (!mmap_file_rw(&wav->p, name, wav->size)) {
 		fprintf(stderr, "couldnt open wav file %s!\n", name);

wav.h

@@ -10,5 +10,5 @@ You should have received a copy of the CC0 Public Domain Dedication along with t
 #define WAV_H
 #include "pcm.h"
 int open_wav_read(pcm_t **, char *);
-int open_wav_write(pcm_t **, char *, int, int, int);
+int open_wav_write(pcm_t **, char *, int, int, float);
 #endif