diff options
| -rw-r--r-- | backends/dc/audio.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/backends/dc/audio.cpp b/backends/dc/audio.cpp index bf475f1cce..b1a9ba3cd6 100644 --- a/backends/dc/audio.cpp +++ b/backends/dc/audio.cpp @@ -25,12 +25,13 @@ #include "base/engine.h" #include "dc.h" -EXTERN_C void *memcpy4(void *s1, const void *s2, unsigned int n); +EXTERN_C void *memcpy4s(void *s1, const void *s2, unsigned int n); void initSound() { stop_sound(); - do_sound_command(CMD_SET_FREQ_EXP(FREQ_44100_EXP)); + do_sound_command(CMD_SET_FREQ_EXP(FREQ_22050_EXP)); + do_sound_command(CMD_SET_STEREO(1)); do_sound_command(CMD_SET_BUFFER(3)); } @@ -74,16 +75,16 @@ void OSystem_Dreamcast::checkSound() return; _sound_proc(_sound_proc_param, (byte*)temp_sound_buffer, - SAMPLES_TO_BYTES(n)); + 2*SAMPLES_TO_BYTES(n)); if(fillpos+n > curr_ring_buffer_samples) { int r = curr_ring_buffer_samples - fillpos; - memcpy4(RING_BUF+fillpos, temp_sound_buffer, SAMPLES_TO_BYTES(r)); + memcpy4s(RING_BUF+fillpos, temp_sound_buffer, SAMPLES_TO_BYTES(r)); fillpos = 0; n -= r; - memcpy4(RING_BUF, temp_sound_buffer+r, SAMPLES_TO_BYTES(n)); + memcpy4s(RING_BUF, temp_sound_buffer+(r<<1), SAMPLES_TO_BYTES(n)); } else { - memcpy4(RING_BUF+fillpos, temp_sound_buffer, SAMPLES_TO_BYTES(n)); + memcpy4s(RING_BUF+fillpos, temp_sound_buffer, SAMPLES_TO_BYTES(n)); } if((fillpos += n) >= curr_ring_buffer_samples) fillpos = 0; @@ -91,6 +92,6 @@ void OSystem_Dreamcast::checkSound() int OSystem_Dreamcast::getOutputSampleRate() const { - return 22050; + return read_sound_int(&SOUNDSTATUS->freq); } |