diff options
Diffstat (limited to 'src/pcm_utils.c')
| -rw-r--r-- | src/pcm_utils.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/src/pcm_utils.c b/src/pcm_utils.c index be32729f0..6a97fff37 100644 --- a/src/pcm_utils.c +++ b/src/pcm_utils.c @@ -74,15 +74,15 @@ void pcm_volumeChange(char *buffer, int bufferSize, AudioFormat * format, } } -static void pcm_add(char *buffer1, char *buffer2, size_t bufferSize1, +static void pcm_add(char *buffer1, const char *buffer2, size_t bufferSize1, size_t bufferSize2, int vol1, int vol2, - AudioFormat * format) + const AudioFormat * format) { mpd_sint32 temp32; mpd_sint8 *buffer8_1 = (mpd_sint8 *) buffer1; - mpd_sint8 *buffer8_2 = (mpd_sint8 *) buffer2; + const mpd_sint8 *buffer8_2 = (const mpd_sint8 *) buffer2; mpd_sint16 *buffer16_1 = (mpd_sint16 *) buffer1; - mpd_sint16 *buffer16_2 = (mpd_sint16 *) buffer2; + const mpd_sint16 *buffer16_2 = (const mpd_sint16 *) buffer2; switch (format->bits) { case 16: @@ -129,8 +129,8 @@ static void pcm_add(char *buffer1, char *buffer2, size_t bufferSize1, } } -void pcm_mix(char *buffer1, char *buffer2, size_t bufferSize1, - size_t bufferSize2, AudioFormat * format, float portion1) +void pcm_mix(char *buffer1, const char *buffer2, size_t bufferSize1, + size_t bufferSize2, const AudioFormat * format, float portion1) { int vol1; float s = sin(M_PI_2 * portion1); @@ -351,8 +351,8 @@ static char *pcm_convertChannels(mpd_sint8 channels, char *inBuffer, return outBuffer; } -static char *pcm_convertTo16bit(mpd_sint8 bits, char *inBuffer, size_t inSize, - size_t *outSize) +static char *pcm_convertTo16bit(mpd_sint8 bits, const char *inBuffer, + size_t inSize, size_t *outSize) { static char *buf; static size_t len; @@ -378,8 +378,7 @@ static char *pcm_convertTo16bit(mpd_sint8 bits, char *inBuffer, size_t inSize, break; case 16: *outSize = inSize; - outBuffer = inBuffer; - break; + return inBuffer; case 24: /* put dithering code from mp3_decode here */ default: @@ -390,7 +389,7 @@ static char *pcm_convertTo16bit(mpd_sint8 bits, char *inBuffer, size_t inSize, } /* outFormat bits must be 16 and channels must be 1 or 2! */ -size_t pcm_convertAudioFormat(AudioFormat * inFormat, char *inBuffer, +size_t pcm_convertAudioFormat(AudioFormat * inFormat, const char *inBuffer, size_t inSize, AudioFormat * outFormat, char *outBuffer, ConvState *convState) { @@ -427,8 +426,8 @@ size_t pcm_convertAudioFormat(AudioFormat * inFormat, char *inBuffer, return len; } -size_t pcm_sizeOfConvBuffer(AudioFormat * inFormat, size_t inSize, - AudioFormat * outFormat) +size_t pcm_sizeOfConvBuffer(const AudioFormat * inFormat, size_t inSize, + const AudioFormat * outFormat) { const double ratio = (double)outFormat->sampleRate / (double)inFormat->sampleRate; |