Mercurial > sdl-ios-xcode
diff src/audio/nto/SDL_nto_audio.c @ 1895:c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 10 Jul 2006 21:04:37 +0000 |
parents | d910939febfa |
children | 3b4ce57c6215 |
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--- a/src/audio/nto/SDL_nto_audio.c Thu Jul 06 18:01:37 2006 +0000 +++ b/src/audio/nto/SDL_nto_audio.c Mon Jul 10 21:04:37 2006 +0000 @@ -57,72 +57,70 @@ struct BuggyCards { - char* cardname; - unsigned long bugtype; + char *cardname; + unsigned long bugtype; }; #define QSA_WA_CARDS 3 -struct BuggyCards buggycards[QSA_WA_CARDS]= -{ - {"Sound Blaster Live!", QSA_MMAP_WORKAROUND}, - {"Vortex 8820", QSA_MMAP_WORKAROUND}, - {"Vortex 8830", QSA_MMAP_WORKAROUND}, +struct BuggyCards buggycards[QSA_WA_CARDS] = { + {"Sound Blaster Live!", QSA_MMAP_WORKAROUND}, + {"Vortex 8820", QSA_MMAP_WORKAROUND}, + {"Vortex 8830", QSA_MMAP_WORKAROUND}, }; /* Audio driver functions */ static void NTO_ThreadInit(_THIS); -static int NTO_OpenAudio(_THIS, SDL_AudioSpec* spec); +static int NTO_OpenAudio(_THIS, SDL_AudioSpec * spec); static void NTO_WaitAudio(_THIS); static void NTO_PlayAudio(_THIS); -static Uint8* NTO_GetAudioBuf(_THIS); +static Uint8 *NTO_GetAudioBuf(_THIS); static void NTO_CloseAudio(_THIS); /* card names check to apply the workarounds */ -static int NTO_CheckBuggyCards(_THIS, unsigned long checkfor) +static int +NTO_CheckBuggyCards(_THIS, unsigned long checkfor) { char scardname[33]; int it; - - if (snd_card_get_name(cardno, scardname, 32)<0) - { + + if (snd_card_get_name(cardno, scardname, 32) < 0) { return 0; } - for (it=0; it<QSA_WA_CARDS; it++) - { - if (SDL_strcmp(buggycards[it].cardname, scardname)==0) - { - if (buggycards[it].bugtype==checkfor) - { - return 1; - } - } + for (it = 0; it < QSA_WA_CARDS; it++) { + if (SDL_strcmp(buggycards[it].cardname, scardname) == 0) { + if (buggycards[it].bugtype == checkfor) { + return 1; + } + } } return 0; } -static void NTO_ThreadInit(_THIS) +static void +NTO_ThreadInit(_THIS) { - int status; - struct sched_param param; + int status; + struct sched_param param; - /* increasing default 10 priority to 25 to avoid jerky sound */ - status=SchedGet(0, 0, ¶m); - param.sched_priority=param.sched_curpriority+15; - status=SchedSet(0, 0, SCHED_NOCHANGE, ¶m); + /* increasing default 10 priority to 25 to avoid jerky sound */ + status = SchedGet(0, 0, ¶m); + param.sched_priority = param.sched_curpriority + 15; + status = SchedSet(0, 0, SCHED_NOCHANGE, ¶m); } /* PCM transfer channel parameters initialize function */ -static void NTO_InitAudioParams(snd_pcm_channel_params_t* cpars) +static void +NTO_InitAudioParams(snd_pcm_channel_params_t * cpars) { SDL_memset(cpars, 0, sizeof(snd_pcm_channel_params_t)); cpars->channel = SND_PCM_CHANNEL_PLAYBACK; cpars->mode = SND_PCM_MODE_BLOCK; cpars->start_mode = SND_PCM_START_DATA; - cpars->stop_mode = SND_PCM_STOP_STOP; + cpars->stop_mode = SND_PCM_STOP_STOP; cpars->format.format = SND_PCM_SFMT_S16_LE; cpars->format.interleave = 1; cpars->format.rate = DEFAULT_CPARAMS_RATE; @@ -132,69 +130,67 @@ cpars->buf.block.frags_max = DEFAULT_CPARAMS_FRAGS_MAX; } -static int NTO_AudioAvailable(void) +static int +NTO_AudioAvailable(void) { /* See if we can open a nonblocking channel. - Return value '1' means we can. - Return value '0' means we cannot. */ + Return value '1' means we can. + Return value '0' means we cannot. */ int available; int rval; - snd_pcm_t* handle; + snd_pcm_t *handle; available = 0; handle = NULL; rval = snd_pcm_open_preferred(&handle, NULL, NULL, OPEN_FLAGS); - if (rval >= 0) - { + if (rval >= 0) { available = 1; - if ((rval = snd_pcm_close(handle)) < 0) - { - SDL_SetError("NTO_AudioAvailable(): snd_pcm_close failed: %s\n", snd_strerror(rval)); + if ((rval = snd_pcm_close(handle)) < 0) { + SDL_SetError + ("NTO_AudioAvailable(): snd_pcm_close failed: %s\n", + snd_strerror(rval)); available = 0; } - } - else - { - SDL_SetError("NTO_AudioAvailable(): there are no available audio devices.\n"); + } else { + SDL_SetError + ("NTO_AudioAvailable(): there are no available audio devices.\n"); } return (available); } -static void NTO_DeleteAudioDevice(SDL_AudioDevice *device) +static void +NTO_DeleteAudioDevice(SDL_AudioDevice * device) { - if ((device)&&(device->hidden)) - { + if ((device) && (device->hidden)) { SDL_free(device->hidden); } - if (device) - { + if (device) { SDL_free(device); } } -static SDL_AudioDevice* NTO_CreateAudioDevice(int devindex) +static SDL_AudioDevice * +NTO_CreateAudioDevice(int devindex) { SDL_AudioDevice *this; /* Initialize all variables that we clean on shutdown */ - this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); - if (this) - { + this = (SDL_AudioDevice *) SDL_malloc(sizeof(SDL_AudioDevice)); + if (this) { SDL_memset(this, 0, sizeof(SDL_AudioDevice)); - this->hidden = (struct SDL_PrivateAudioData *)SDL_malloc(sizeof(struct SDL_PrivateAudioData)); + this->hidden = (struct SDL_PrivateAudioData *) + SDL_malloc(sizeof(struct SDL_PrivateAudioData)); } - if ((this == NULL) || (this->hidden == NULL)) - { + if ((this == NULL) || (this->hidden == NULL)) { SDL_OutOfMemory(); - if (this) - { + if (this) { SDL_free(this); - } + } return (0); } SDL_memset(this->hidden, 0, sizeof(struct SDL_PrivateAudioData)); @@ -213,15 +209,15 @@ return this; } -AudioBootStrap QNXNTOAUDIO_bootstrap = -{ +AudioBootStrap QNXNTOAUDIO_bootstrap = { DRIVER_NAME, "QNX6 QSA-NTO Audio", NTO_AudioAvailable, NTO_CreateAudioDevice }; /* This function waits until it is possible to write a full sound buffer */ -static void NTO_WaitAudio(_THIS) +static void +NTO_WaitAudio(_THIS) { fd_set wfds; int selectret; @@ -230,121 +226,125 @@ FD_SET(audio_fd, &wfds); do { - selectret=select(audio_fd + 1, NULL, &wfds, NULL, NULL); - switch (selectret) - { - case -1: - case 0: SDL_SetError("NTO_WaitAudio(): select() failed: %s\n", strerror(errno)); - return; - default: if (FD_ISSET(audio_fd, &wfds)) - { - return; - } - break; + selectret = select(audio_fd + 1, NULL, &wfds, NULL, NULL); + switch (selectret) { + case -1: + case 0: + SDL_SetError("NTO_WaitAudio(): select() failed: %s\n", + strerror(errno)); + return; + default: + if (FD_ISSET(audio_fd, &wfds)) { + return; + } + break; } - } while(1); + } + while (1); } -static void NTO_PlayAudio(_THIS) +static void +NTO_PlayAudio(_THIS) { int written, rval; int towrite; - void* pcmbuffer; + void *pcmbuffer; - if (!this->enabled) - { + if (!this->enabled) { return; } - + towrite = this->spec.size; pcmbuffer = pcm_buf; /* Write the audio data, checking for EAGAIN (buffer full) and underrun */ do { written = snd_pcm_plugin_write(audio_handle, pcm_buf, towrite); - if (written != towrite) - { - if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) - { + if (written != towrite) { + if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) { /* Let a little CPU time go by and try to write again */ SDL_Delay(1); /* if we wrote some data */ towrite -= written; pcmbuffer += written * this->spec.channels; continue; - } - else - { - if ((errno == EINVAL) || (errno == EIO)) - { + } else { + if ((errno == EINVAL) || (errno == EIO)) { SDL_memset(&cstatus, 0, sizeof(cstatus)); cstatus.channel = SND_PCM_CHANNEL_PLAYBACK; - if ((rval = snd_pcm_plugin_status(audio_handle, &cstatus)) < 0) - { - SDL_SetError("NTO_PlayAudio(): snd_pcm_plugin_status failed: %s\n", snd_strerror(rval)); + if ((rval = + snd_pcm_plugin_status(audio_handle, &cstatus)) < 0) { + SDL_SetError + ("NTO_PlayAudio(): snd_pcm_plugin_status failed: %s\n", + snd_strerror(rval)); return; - } - if ((cstatus.status == SND_PCM_STATUS_UNDERRUN) || (cstatus.status == SND_PCM_STATUS_READY)) - { - if ((rval = snd_pcm_plugin_prepare(audio_handle, SND_PCM_CHANNEL_PLAYBACK)) < 0) - { - SDL_SetError("NTO_PlayAudio(): snd_pcm_plugin_prepare failed: %s\n", snd_strerror(rval)); + } + if ((cstatus.status == SND_PCM_STATUS_UNDERRUN) + || (cstatus.status == SND_PCM_STATUS_READY)) { + if ((rval = + snd_pcm_plugin_prepare(audio_handle, + SND_PCM_CHANNEL_PLAYBACK)) + < 0) { + SDL_SetError + ("NTO_PlayAudio(): snd_pcm_plugin_prepare failed: %s\n", + snd_strerror(rval)); return; } - } + } continue; - } - else - { + } else { return; } } - } - else - { + } else { /* we wrote all remaining data */ towrite -= written; pcmbuffer += written * this->spec.channels; } - } while ((towrite > 0) && (this->enabled)); + } + while ((towrite > 0) && (this->enabled)); /* If we couldn't write, assume fatal error for now */ - if (towrite != 0) - { + if (towrite != 0) { this->enabled = 0; } return; } -static Uint8* NTO_GetAudioBuf(_THIS) +static Uint8 * +NTO_GetAudioBuf(_THIS) { return pcm_buf; } -static void NTO_CloseAudio(_THIS) +static void +NTO_CloseAudio(_THIS) { int rval; this->enabled = 0; - if (audio_handle != NULL) - { - if ((rval = snd_pcm_plugin_flush(audio_handle, SND_PCM_CHANNEL_PLAYBACK)) < 0) - { - SDL_SetError("NTO_CloseAudio(): snd_pcm_plugin_flush failed: %s\n", snd_strerror(rval)); + if (audio_handle != NULL) { + if ((rval = + snd_pcm_plugin_flush(audio_handle, + SND_PCM_CHANNEL_PLAYBACK)) < 0) { + SDL_SetError + ("NTO_CloseAudio(): snd_pcm_plugin_flush failed: %s\n", + snd_strerror(rval)); return; } - if ((rval = snd_pcm_close(audio_handle)) < 0) - { - SDL_SetError("NTO_CloseAudio(): snd_pcm_close failed: %s\n",snd_strerror(rval)); + if ((rval = snd_pcm_close(audio_handle)) < 0) { + SDL_SetError("NTO_CloseAudio(): snd_pcm_close failed: %s\n", + snd_strerror(rval)); return; } audio_handle = NULL; } } -static int NTO_OpenAudio(_THIS, SDL_AudioSpec* spec) +static int +NTO_OpenAudio(_THIS, SDL_AudioSpec * spec) { int rval; int format; @@ -354,9 +354,8 @@ audio_handle = NULL; this->enabled = 0; - if (pcm_buf != NULL) - { - SDL_FreeAudioMem(pcm_buf); + if (pcm_buf != NULL) { + SDL_FreeAudioMem(pcm_buf); pcm_buf = NULL; } @@ -364,19 +363,21 @@ NTO_InitAudioParams(&cparams); /* Open the audio device */ - rval = snd_pcm_open_preferred(&audio_handle, &cardno, &deviceno, OPEN_FLAGS); - if (rval < 0) - { - SDL_SetError("NTO_OpenAudio(): snd_pcm_open failed: %s\n", snd_strerror(rval)); + rval = + snd_pcm_open_preferred(&audio_handle, &cardno, &deviceno, OPEN_FLAGS); + if (rval < 0) { + SDL_SetError("NTO_OpenAudio(): snd_pcm_open failed: %s\n", + snd_strerror(rval)); return (-1); } - if (!NTO_CheckBuggyCards(this, QSA_MMAP_WORKAROUND)) - { + if (!NTO_CheckBuggyCards(this, QSA_MMAP_WORKAROUND)) { /* enable count status parameter */ - if ((rval = snd_pcm_plugin_set_disable(audio_handle, PLUGIN_DISABLE_MMAP)) < 0) - { - SDL_SetError("snd_pcm_plugin_set_disable failed: %s\n", snd_strerror(rval)); + if ((rval = + snd_pcm_plugin_set_disable(audio_handle, + PLUGIN_DISABLE_MMAP)) < 0) { + SDL_SetError("snd_pcm_plugin_set_disable failed: %s\n", + snd_strerror(rval)); return (-1); } } @@ -386,49 +387,46 @@ /* can't use format as SND_PCM_SFMT_U8 = 0 in nto */ found = 0; - for (test_format=SDL_FirstAudioFormat(spec->format); !found ;) - { + for (test_format = SDL_FirstAudioFormat(spec->format); !found;) { /* if match found set format to equivalent ALSA format */ - switch (test_format) - { - case AUDIO_U8: - format = SND_PCM_SFMT_U8; - found = 1; - break; - case AUDIO_S8: - format = SND_PCM_SFMT_S8; - found = 1; - break; - case AUDIO_S16LSB: - format = SND_PCM_SFMT_S16_LE; - found = 1; - break; - case AUDIO_S16MSB: - format = SND_PCM_SFMT_S16_BE; - found = 1; - break; - case AUDIO_U16LSB: - format = SND_PCM_SFMT_U16_LE; - found = 1; - break; - case AUDIO_U16MSB: - format = SND_PCM_SFMT_U16_BE; - found = 1; - break; - default: - break; + switch (test_format) { + case AUDIO_U8: + format = SND_PCM_SFMT_U8; + found = 1; + break; + case AUDIO_S8: + format = SND_PCM_SFMT_S8; + found = 1; + break; + case AUDIO_S16LSB: + format = SND_PCM_SFMT_S16_LE; + found = 1; + break; + case AUDIO_S16MSB: + format = SND_PCM_SFMT_S16_BE; + found = 1; + break; + case AUDIO_U16LSB: + format = SND_PCM_SFMT_U16_LE; + found = 1; + break; + case AUDIO_U16MSB: + format = SND_PCM_SFMT_U16_BE; + found = 1; + break; + default: + break; } - if (!found) - { + if (!found) { test_format = SDL_NextAudioFormat(); } } /* assumes test_format not 0 on success */ - if (test_format == 0) - { - SDL_SetError("NTO_OpenAudio(): Couldn't find any hardware audio formats"); + if (test_format == 0) { + SDL_SetError + ("NTO_OpenAudio(): Couldn't find any hardware audio formats"); return (-1); } @@ -439,23 +437,23 @@ /* Set mono or stereo audio (currently only two channels supported) */ cparams.format.voices = spec->channels; - + /* Set rate */ cparams.format.rate = spec->freq; /* Setup the transfer parameters according to cparams */ rval = snd_pcm_plugin_params(audio_handle, &cparams); - if (rval < 0) - { - SDL_SetError("NTO_OpenAudio(): snd_pcm_channel_params failed: %s\n", snd_strerror(rval)); + if (rval < 0) { + SDL_SetError + ("NTO_OpenAudio(): snd_pcm_channel_params failed: %s\n", + snd_strerror(rval)); return (-1); } /* Make sure channel is setup right one last time */ SDL_memset(&csetup, 0x00, sizeof(csetup)); csetup.channel = SND_PCM_CHANNEL_PLAYBACK; - if (snd_pcm_plugin_setup(audio_handle, &csetup) < 0) - { + if (snd_pcm_plugin_setup(audio_handle, &csetup) < 0) { SDL_SetError("NTO_OpenAudio(): Unable to setup playback channel\n"); return -1; } @@ -466,34 +464,37 @@ pcm_len = spec->size; - if (pcm_len==0) - { - pcm_len = csetup.buf.block.frag_size * spec->channels * (snd_pcm_format_width(format)/8); + if (pcm_len == 0) { + pcm_len = + csetup.buf.block.frag_size * spec->channels * + (snd_pcm_format_width(format) / 8); } /* Allocate memory to the audio buffer and initialize with silence (Note that buffer size must be a multiple of fragment size, so find closest multiple) - */ - pcm_buf = (Uint8*)SDL_AllocAudioMem(pcm_len); - if (pcm_buf == NULL) - { + */ + pcm_buf = (Uint8 *) SDL_AllocAudioMem(pcm_len); + if (pcm_buf == NULL) { SDL_SetError("NTO_OpenAudio(): pcm buffer allocation failed\n"); return (-1); } SDL_memset(pcm_buf, spec->silence, pcm_len); /* get the file descriptor */ - if ((audio_fd = snd_pcm_file_descriptor(audio_handle, SND_PCM_CHANNEL_PLAYBACK)) < 0) - { - SDL_SetError("NTO_OpenAudio(): snd_pcm_file_descriptor failed with error code: %s\n", snd_strerror(rval)); + if ((audio_fd = + snd_pcm_file_descriptor(audio_handle, + SND_PCM_CHANNEL_PLAYBACK)) < 0) { + SDL_SetError + ("NTO_OpenAudio(): snd_pcm_file_descriptor failed with error code: %s\n", + snd_strerror(rval)); return (-1); } /* Trigger audio playback */ rval = snd_pcm_plugin_prepare(audio_handle, SND_PCM_CHANNEL_PLAYBACK); - if (rval < 0) - { - SDL_SetError("snd_pcm_plugin_prepare failed: %s\n", snd_strerror(rval)); + if (rval < 0) { + SDL_SetError("snd_pcm_plugin_prepare failed: %s\n", + snd_strerror(rval)); return (-1); } @@ -505,3 +506,5 @@ /* We're really ready to rock and roll. :-) */ return (0); } + +/* vi: set ts=4 sw=4 expandtab: */