diff options
Diffstat (limited to 'src/xine-engine/audio_out.c')
| -rw-r--r-- | src/xine-engine/audio_out.c | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/src/xine-engine/audio_out.c b/src/xine-engine/audio_out.c index 7f59f1ea8..9919d4197 100644 --- a/src/xine-engine/audio_out.c +++ b/src/xine-engine/audio_out.c @@ -17,7 +17,7 @@ * along with self program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * - * $Id: audio_out.c,v 1.26 2001/11/15 00:32:36 miguelfreitas Exp $ + * $Id: audio_out.c,v 1.27 2001/11/16 20:24:56 jcdutton Exp $ * * 22-8-2001 James imported some useful AC3 sections from the previous alsa driver. * (c) 2001 Andy Lo A Foe <andy@alsaplayer.org> @@ -290,6 +290,9 @@ static void *ao_loop (void *this_gen) { uint8_t *data; uint32_t cur_time; int num_output_frames ; + uint32_t ac5_type; + uint32_t ac5_length; + uint32_t i; this->audio_loop_running = 1; @@ -420,6 +423,55 @@ static void *ao_loop (void *this_gen) { break; case AO_CAP_MODE_AC5: + memset(this->frame_buffer,0x00,6144); + this->frame_buffer[0] = 0xf872; /* spdif syncword */ + this->frame_buffer[1] = 0x4e1f; /* ............. */ + data = (uint8_t *)&buf->mem[0]; + + if ((data[0] != 0x7f) || + (data[1] != 0xfe) || + (data[2] != 0x80) || + (data[3] != 0x01)) { + continue; + } + ac5_type=((data[4] & 0x01) << 6) | ((data[5] >>2) & 0x3f); + /* printf("AC5 type=%d\n",ac5_type); */ + switch(ac5_type) { + case 0x0f: + this->frame_buffer[2] = 0x000b; /* DTS */ + break; + case 0x1f: + this->frame_buffer[2] = 0x000c; /* DTS */ + break; + case 0x3f: + this->frame_buffer[2] = 0x000d; /* DTS */ + break; + default: + this->frame_buffer[2] = 0x0000; /* DTS */ + break; + } + + ac5_length=((data[5] & 0x03) << 12) | + ((data[6] & 0xff) << 4) | + ((data[7] & 0xf0) >> 4); + /* printf("AC5 length=%d\n",ac5_length); */ + if (ac5_length > 8191) { + break; + } + ac5_length = ac5_length << 3; /* Convert bytes to bits */ + this->frame_buffer[3] = ac5_length; + + /* ac3 seems to be swabbed data */ + swab(buf->mem,this->frame_buffer+4, ac5_length ); + + this->driver->write(this->driver, this->frame_buffer, (ac5_length / 2) + 4); + + break; + + + + + memset(this->frame_buffer,0xff,6144); this->frame_buffer[0] = 0xf872; /* spdif syncword */ this->frame_buffer[1] = 0x4e1f; /* ............. */ |