diff options
Diffstat (limited to 'src/xine-engine/audio_out.c')
| -rw-r--r-- | src/xine-engine/audio_out.c | 137 |
1 files changed, 2 insertions, 135 deletions
diff --git a/src/xine-engine/audio_out.c b/src/xine-engine/audio_out.c index abaf1b7df..ba112d0a6 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 1.36 2001/11/27 00:00:35 jcdutton Exp $ + * $Id: audio_out.c,v 1.37 2001/12/09 18:31:02 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> @@ -75,55 +75,6 @@ #define ZERO_BUF_SIZE 5000 -struct frmsize_s -{ - uint16_t bit_rate; - uint16_t frm_size[3]; -}; - - -static const struct frmsize_s frmsizecod_tbl[64] = -{ - { 32 ,{64 ,69 ,96 } }, - { 32 ,{64 ,70 ,96 } }, - { 40 ,{80 ,87 ,120 } }, - { 40 ,{80 ,88 ,120 } }, - { 48 ,{96 ,104 ,144 } }, - { 48 ,{96 ,105 ,144 } }, - { 56 ,{112 ,121 ,168 } }, - { 56 ,{112 ,122 ,168 } }, - { 64 ,{128 ,139 ,192 } }, - { 64 ,{128 ,140 ,192 } }, - { 80 ,{160 ,174 ,240 } }, - { 80 ,{160 ,175 ,240 } }, - { 96 ,{192 ,208 ,288 } }, - { 96 ,{192 ,209 ,288 } }, - { 112 ,{224 ,243 ,336 } }, - { 112 ,{224 ,244 ,336 } }, - { 128 ,{256 ,278 ,384 } }, - { 128 ,{256 ,279 ,384 } }, - { 160 ,{320 ,348 ,480 } }, - { 160 ,{320 ,349 ,480 } }, - { 192 ,{384 ,417 ,576 } }, - { 192 ,{384 ,418 ,576 } }, - { 224 ,{448 ,487 ,672 } }, - { 224 ,{448 ,488 ,672 } }, - { 256 ,{512 ,557 ,768 } }, - { 256 ,{512 ,558 ,768 } }, - { 320 ,{640 ,696 ,960 } }, - { 320 ,{640 ,697 ,960 } }, - { 384 ,{768 ,835 ,1152 } }, - { 384 ,{768 ,836 ,1152 } }, - { 448 ,{896 ,975 ,1344 } }, - { 448 ,{896 ,976 ,1344 } }, - { 512 ,{1024 ,1114 ,1536 } }, - { 512 ,{1024 ,1115 ,1536 } }, - { 576 ,{1152 ,1253 ,1728 } }, - { 576 ,{1152 ,1254 ,1728 } }, - { 640 ,{1280 ,1393 ,1920 } }, - { 640 ,{1280 ,1394 ,1920 } } -}; - struct audio_fifo_s { audio_buffer_t *first; audio_buffer_t *last; @@ -284,15 +235,9 @@ static void *ao_loop (void *this_gen) { audio_buffer_t *buf; int32_t gap; int delay; - int frame_size; - int fscod; - int frmsizecod; uint8_t *data; uint32_t cur_time; int num_output_frames ; - uint32_t ac5_type; - uint32_t ac5_length; - uint32_t ac5_pcm_length; int paused_wait; this->audio_loop_running = 1; @@ -420,86 +365,8 @@ static void *ao_loop (void *this_gen) { this->driver->write(this->driver, this->frame_buffer, num_output_frames); break; case AO_CAP_MODE_A52: - - this->frame_buffer[0] = 0xf872; /* spdif syncword */ - this->frame_buffer[1] = 0x4e1f; /* ............. */ - this->frame_buffer[2] = 0x0001; /* AC3 data */ - - data = (uint8_t *)&buf->mem[1]; /* skip AC3 sync */ - fscod = (data[2] >> 6) & 0x3; - frmsizecod = data[2] & 0x3f; - frame_size = frmsizecod_tbl[frmsizecod].frm_size[fscod] << 4; - this->frame_buffer[3] = frame_size; - - /* ac3 seems to be swabbed data */ - swab(buf->mem,this->frame_buffer+4, buf->num_frames ); - this->driver->write(this->driver, this->frame_buffer, 1536); - - 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); - ac5_length++; - ac5_length=ac5_length * buf->frame_header_count ; - - if (ac5_length > 4088) { - /* Biggest PCM length from AC5 is 4096 */ - break; - } - this->frame_buffer[3] = ac5_length << 3; /* Convert bytes to bits */ - - /* ac3 seems to be swabbed data */ - swab(buf->mem,this->frame_buffer+4, ac5_length ); - - if (ac5_length <= 248) { - ac5_pcm_length = 64; - } else if (ac5_length <= 504) { - ac5_pcm_length = 128; - } else if (ac5_length <= 1016) { - ac5_pcm_length = 256; - } else if (ac5_length <= 2040) { - ac5_pcm_length = 512; - } else if (ac5_length <= 4088) { - ac5_pcm_length = 1024; - } else { - printf("BAD AC5 length\n"); - break; - } - if (ac5_pcm_length < (512 * buf->frame_header_count)) { - ac5_pcm_length = 512 * buf->frame_header_count ; - } - /* printf("DTS length=%d\n",ac5_pcm_length); */ - this->driver->write(this->driver, this->frame_buffer, ac5_pcm_length); - + this->driver->write(this->driver, buf->mem, buf->num_frames); break; } |