From 9231085da17abf4dfcd4938d4adc215e0a5f0647 Mon Sep 17 00:00:00 2001 From: Holger Schemel Date: Sat, 27 Apr 2002 02:43:03 +0200 Subject: [PATCH] rnd-20020427-1-src --- src/libgame/sound.c | 79 +++++++++++++++++++++++++++++++-------------- 1 file changed, 55 insertions(+), 24 deletions(-) diff --git a/src/libgame/sound.c b/src/libgame/sound.c index 3b938200..75634f14 100644 --- a/src/libgame/sound.c +++ b/src/libgame/sound.c @@ -43,11 +43,12 @@ static struct SoundControl emptySoundControl = static int stereo_volume[PSND_MAX_LEFT2RIGHT+1]; static char premix_first_buffer[SND_BLOCKSIZE]; #if defined(AUDIO_STREAMING_DSP) -static char premix_left_buffer[SND_BLOCKSIZE]; -static char premix_right_buffer[SND_BLOCKSIZE]; -static int premix_last_buffer[SND_BLOCKSIZE]; +static short premix_second_buffer[SND_BLOCKSIZE]; +static short premix_left_buffer[SND_BLOCKSIZE]; +static short premix_right_buffer[SND_BLOCKSIZE]; +static long premix_last_buffer[SND_BLOCKSIZE]; #endif -static unsigned char playing_buffer[SND_BLOCKSIZE]; +static short playing_buffer[SND_BLOCKSIZE]; #endif /* forward declaration of internal functions */ @@ -345,8 +346,8 @@ void SoundServer(void) struct timeval delay = { 0, 0 }; byte *sample_ptr; long sample_size; - static long max_sample_size = 0; - static long fragment_size = DEFAULT_AUDIO_FRAGMENT_SIZE; + static int max_sample_size = 0; + static int fragment_size = DEFAULT_AUDIO_FRAGMENT_SIZE; int sample_rate = DEFAULT_AUDIO_SAMPLE_RATE; static boolean stereo = TRUE; @@ -360,7 +361,7 @@ void SoundServer(void) #elif defined(PLATFORM_NETBSD) stereo = InitAudioDevice_NetBSD(fragment_size, sample_rate); #endif - max_sample_size = fragment_size / (stereo ? 2 : 1); + max_sample_size = fragment_size / ((stereo ? 2 : 1) * sizeof(short)); } if (snd_ctrl.active) /* new sound has arrived */ @@ -373,9 +374,9 @@ void SoundServer(void) FD_SET(audio.soundserver_pipe[0], &sound_fdset); /* first clear the last premixing buffer */ - memset(premix_last_buffer, 0, fragment_size * sizeof(int)); + memset(premix_last_buffer, 0, fragment_size * sizeof(short)); - for(i=0;i= SOUND_FADING_VOLUME_THRESHOLD) @@ -416,8 +423,8 @@ void SoundServer(void) if (stereo) { int middle_pos = PSND_MAX_LEFT2RIGHT/2; - int left_volume = stereo_volume[middle_pos +playlist[i].stereo]; - int right_volume = stereo_volume[middle_pos -playlist[i].stereo]; + int left_volume = stereo_volume[middle_pos + playlist[i].stereo]; + int right_volume= stereo_volume[middle_pos - playlist[i].stereo]; for(j=0; j> PSND_MAX_LEFT2RIGHT_BITS; - premix_last_buffer[2*j+0] += premix_left_buffer[j]; - premix_last_buffer[2*j+1] += premix_right_buffer[j]; + + premix_last_buffer[2 * j + 0] += premix_left_buffer[j]; + premix_last_buffer[2 * j + 1] += premix_right_buffer[j]; } } else { - for(j=0;j255) + else if (premix_last_buffer[i] > 255) playing_buffer[i] = 255; else - playing_buffer[i] = (premix_last_buffer[i]>>1)^0x80; + playing_buffer[i] = (premix_last_buffer[i] >> 1) ^ 0x80; } +#else + for(i=0; i 255) + playing_buffer[i] = 127; + else + playing_buffer[i] = (premix_last_buffer[i] >> 1); + + playing_buffer[i] <<= 8; + } +#endif /* finally play the sound fragment */ write(audio.device_fd, playing_buffer, fragment_size); @@ -787,16 +809,17 @@ static void SoundServer_StopAllSounds() /* ------------------------------------------------------------------------- */ #if defined(AUDIO_LINUX_IOCTL) -static boolean InitAudioDevice_Linux(long fragment_size, int sample_rate) +static boolean InitAudioDevice_Linux(int fragment_size, int sample_rate) { /* "ioctl()" expects pointer to 'int' value for stereo flag (boolean is defined as 'char', which will not work here) */ + unsigned int fragment_spec = 0; + unsigned int audio_format = 0; + int fragment_size_query; int stereo = TRUE; - unsigned long fragment_spec = 0; /* determine logarithm (log2) of the fragment size */ - for (fragment_spec=0; (1 << fragment_spec) < fragment_size; - fragment_spec++); + for (fragment_spec=0; (1 << fragment_spec) < fragment_size; fragment_spec++); /* use two fragments (play one fragment, prepare the other); one fragment would result in interrupted audio output, more @@ -812,6 +835,11 @@ static boolean InitAudioDevice_Linux(long fragment_size, int sample_rate) Error(ERR_EXIT_SOUND_SERVER, "cannot set fragment size of /dev/dsp -- no sounds"); + audio_format = AFMT_S16_LE; + if (ioctl(audio.device_fd, SNDCTL_DSP_SETFMT, &audio_format) < 0) + Error(ERR_EXIT_SOUND_SERVER, + "cannot set audio format of /dev/dsp -- no sounds"); + /* try if we can use stereo sound */ if (ioctl(audio.device_fd, SNDCTL_DSP_STEREO, &stereo) < 0) { @@ -832,16 +860,19 @@ static boolean InitAudioDevice_Linux(long fragment_size, int sample_rate) "cannot set sample rate of /dev/dsp -- no sounds"); /* get the real fragmentation size; this should return 512 */ - if (ioctl(audio.device_fd, SNDCTL_DSP_GETBLKSIZE, &fragment_size) < 0) + if (ioctl(audio.device_fd, SNDCTL_DSP_GETBLKSIZE, &fragment_size_query) < 0) Error(ERR_EXIT_SOUND_SERVER, "cannot get fragment size of /dev/dsp -- no sounds"); + if (fragment_size_query != fragment_size) + Error(ERR_EXIT_SOUND_SERVER, + "cannot set fragment size of /dev/dsp -- no sounds"); return (boolean)stereo; } #endif /* AUDIO_LINUX_IOCTL */ #if defined(PLATFORM_NETBSD) -static boolean InitAudioDevice_NetBSD(long fragment_size, int sample_rate) +static boolean InitAudioDevice_NetBSD(int fragment_size, int sample_rate) { audio_info_t a_info; boolean stereo = TRUE; @@ -1116,7 +1147,7 @@ static SoundInfo *Load_WAV(char *filename) } for (i=0; idata_len; i++) - ((byte *)snd_info->data_ptr)[i] = ((byte *)snd_info->data_ptr)[i] ^ 0x80; + ((byte *)snd_info->data_ptr)[i] ^= 0x80; #endif /* PLATFORM_UNIX */ -- 2.34.1