Mercurial > sdl-ios-xcode
diff src/audio/dsp/SDL_dspaudio.c @ 3826:5b483ce86357 SDL-ryan-multiple-audio-device
Minor fixes in dsp driver.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Sat, 07 Oct 2006 07:53:26 +0000 |
parents | 1f156fd874fa |
children | 66fb40445587 |
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--- a/src/audio/dsp/SDL_dspaudio.c Sat Oct 07 07:25:30 2006 +0000 +++ b/src/audio/dsp/SDL_dspaudio.c Sat Oct 07 07:53:26 2006 +0000 @@ -189,6 +189,7 @@ /* Open the audio device */ this->hidden->audio_fd = open(devname, flags, 0); if (this->hidden->audio_fd < 0) { + DSP_CloseDevice(this); SDL_SetError("Couldn't open %s: %s", devname, strerror(errno)); return 0; } @@ -196,12 +197,12 @@ /* Make the file descriptor use blocking writes with fcntl() */ { - long flags; - flags = fcntl(this->hidden->audio_fd, F_GETFL); - flags &= ~O_NONBLOCK; - if (fcntl(this->hidden->audio_fd, F_SETFL, flags) < 0) { + long ctlflags; + ctlflags = fcntl(this->hidden->audio_fd, F_GETFL); + ctlflags &= ~O_NONBLOCK; + if (fcntl(this->hidden->audio_fd, F_SETFL, ctlflags) < 0) { + DSP_CloseDevice(this); SDL_SetError("Couldn't set audio blocking mode"); - DSP_CloseDevice(this); return 0; } } @@ -209,8 +210,8 @@ /* Get a list of supported hardware formats */ if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_GETFMTS, &value) < 0) { perror("SNDCTL_DSP_GETFMTS"); + DSP_CloseDevice(this); SDL_SetError("Couldn't get audio format list"); - DSP_CloseDevice(this); return 0; } @@ -267,8 +268,8 @@ } } if (format == 0) { + DSP_CloseDevice(this); SDL_SetError("Couldn't find any hardware audio formats"); - DSP_CloseDevice(this); return 0; } this->spec.format = test_format; @@ -278,8 +279,8 @@ if ( (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SETFMT, &value) < 0) || (value != format) ) { perror("SNDCTL_DSP_SETFMT"); + DSP_CloseDevice(this); SDL_SetError("Couldn't set audio format"); - DSP_CloseDevice(this); return 0; } @@ -287,8 +288,8 @@ value = this->spec.channels; if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_CHANNELS, &value) < 0) { perror("SNDCTL_DSP_CHANNELS"); + DSP_CloseDevice(this); SDL_SetError("Cannot set the number of channels"); - DSP_CloseDevice(this); return 0; } this->spec.channels = value; @@ -297,8 +298,8 @@ value = this->spec.freq; if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SPEED, &value) < 0) { perror("SNDCTL_DSP_SPEED"); + DSP_CloseDevice(this); SDL_SetError("Couldn't set audio frequency"); - DSP_CloseDevice(this); return 0; } this->spec.freq = value; @@ -309,8 +310,8 @@ /* Determine the power of two of the fragment size */ for (frag_spec = 0; (0x01U << frag_spec) < this->spec.size; ++frag_spec); if ((0x01U << frag_spec) != this->spec.size) { + DSP_CloseDevice(this); SDL_SetError("Fragment size must be a power of two"); - DSP_CloseDevice(this); return 0; } frag_spec |= 0x00020000; /* two fragments, for low latency */ @@ -339,6 +340,7 @@ this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen); if (this->hidden->mixbuf == NULL) { DSP_CloseDevice(this); + SDL_OutOfMemory(); return 0; } SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);