diff options
Diffstat (limited to 'src/xine-engine/audio_out.c')
| -rw-r--r-- | src/xine-engine/audio_out.c | 62 |
1 files changed, 38 insertions, 24 deletions
diff --git a/src/xine-engine/audio_out.c b/src/xine-engine/audio_out.c index d39c99aba..75cef4ce6 100644 --- a/src/xine-engine/audio_out.c +++ b/src/xine-engine/audio_out.c @@ -16,16 +16,18 @@ * You should have received a copy of the GNU General Public License * along with self program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +/** + * @file + * @brief xine-lib audio output implementation + * + * @date 2001-08-20 First implementation of Audio sync and Audio driver separation. + * (c) 2001 James Courtier-Dutton <james@superbug.demon.co.uk> + * @date 2001-08-22 James imported some useful AC3 sections from the previous + * ALSA driver. (c) 2001 Andy Lo A Foe <andy@alsaplayer.org> * - * $Id: audio_out.c,v 1.210 2007/04/01 00:52:36 dgp85 Exp $ * - * 22-8-2001 James imported some useful AC3 sections from the previous alsa driver. - * (c) 2001 Andy Lo A Foe <andy@alsaplayer.org> - * 20-8-2001 First implementation of Audio sync and Audio driver separation. - * (c) 2001 James Courtier-Dutton James@superbug.demon.co.uk - */ - -/* * General Programming Guidelines: - * New concept of an "audio_frame". * An audio_frame consists of all the samples required to fill every @@ -576,18 +578,16 @@ static void audio_filter_compress (aos_t *this, int16_t *mem, int num_frames) { } static void audio_filter_amp (aos_t *this, void *buf, int num_frames) { - - int i; - int num_channels; double amp_factor; - - num_channels = _x_ao_mode2channels (this->input.mode); - if (!num_channels) + int i; + const int total_frames = num_frames * _x_ao_mode2channels (this->input.mode); + + if (!total_frames) return; amp_factor=this->amp_factor; if (this->amp_mute || amp_factor == 0) { - memset (buf, 0, num_frames * num_channels * (this->input.bits / 8)); + memset (buf, 0, total_frames * (this->input.bits / 8)); return; } @@ -595,7 +595,7 @@ static void audio_filter_amp (aos_t *this, void *buf, int num_frames) { int16_t test; int8_t *mem = (int8_t *) buf; - for (i=0; i<num_frames*num_channels; i++) { + for (i=0; i<total_frames; i++) { test = mem[i] * amp_factor; /* Force limit on amp_factor to prevent clipping */ if (test < INT8_MIN) { @@ -612,7 +612,7 @@ static void audio_filter_amp (aos_t *this, void *buf, int num_frames) { int32_t test; int16_t *mem = (int16_t *) buf; - for (i=0; i<num_frames*num_channels; i++) { + for (i=0; i<total_frames; i++) { test = mem[i] * amp_factor; /* Force limit on amp_factor to prevent clipping */ if (test < INT16_MIN) { @@ -1211,13 +1211,27 @@ static void *ao_loop (void *this_gen) { } if( result < 0 ) { - /* FIXME: USB device unplugged. - * We should get the card into a closed state here, that involves closing - * the PCM as well as the MIXER. - * Maybe we should pause the stream until the USB device is plugged in again. - * Return values 0 happen even if usb not unplugged, so needs further investigation. - */ - xprintf(this->xine, XINE_VERBOSITY_LOG, _("write to sound card failed. Was a USB device unplugged ?\n")); + /* device unplugged. */ + xprintf(this->xine, XINE_VERBOSITY_LOG, _("write to sound card failed. Assuming the device was unplugged.\n")); + _x_message (in_buf->stream, XINE_MSG_AUDIO_OUT_UNAVAILABLE, NULL); + + pthread_mutex_lock( &this->driver_lock ); + if(this->driver_open) { + this->driver->close(this->driver); + this->driver_open = 0; + this->driver->exit(this->driver); + this->driver = _x_load_audio_output_plugin (this->xine, "none"); + if (this->driver && !in_buf->stream->emergency_brake && + ao_change_settings(this, + in_buf->format.bits, + in_buf->format.rate, + in_buf->format.mode) == 0) { + in_buf->stream->emergency_brake = 1; + _x_message (in_buf->stream, XINE_MSG_AUDIO_OUT_UNAVAILABLE, NULL); + } + } + pthread_mutex_unlock( &this->driver_lock ); + /* closing the driver will result in XINE_MSG_AUDIO_OUT_UNAVAILABLE to be emitted */ } lprintf ("loop: next buf from fifo\n"); |