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Diffstat (limited to 'libmpcodecs/ad_liba52.c')
-rw-r--r--libmpcodecs/ad_liba52.c339
1 files changed, 0 insertions, 339 deletions
diff --git a/libmpcodecs/ad_liba52.c b/libmpcodecs/ad_liba52.c
deleted file mode 100644
index 505532af6b..0000000000
--- a/libmpcodecs/ad_liba52.c
+++ /dev/null
@@ -1,339 +0,0 @@
-/*
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#define _GNU_SOURCE
-#define _XOPEN_SOURCE 600
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <math.h>
-#include <assert.h>
-
-#include "config.h"
-#include "options.h"
-#include "mp_msg.h"
-#include "mpbswap.h"
-
-#include "ad_internal.h"
-
-#include "cpudetect.h"
-
-#include "libaf/af_format.h"
-
-#include <a52dec/a52.h>
-#include <a52dec/mm_accel.h>
-int (* a52_resample) (float * _f, int16_t * s16);
-
-static a52_state_t *a52_state;
-static uint32_t a52_flags=0;
-/** Used by a52_resample_float, it defines the mapping between liba52
- * channels and output channels. The ith nibble from the right in the
- * hex representation of channel_map is the index of the source
- * channel corresponding to the ith output channel. Source channels are
- * indexed 1-6. Silent output channels are marked by 0xf. */
-static uint32_t channel_map;
-
-#define DRC_NO_ACTION 0
-#define DRC_NO_COMPRESSION 1
-#define DRC_CALLBACK 2
-
-/** The output is multiplied by this var. Used for volume control */
-static sample_t a52_level = 1;
-static int a52_drc_action = DRC_NO_ACTION;
-
-static const ad_info_t info =
-{
- "AC3 decoding with liba52",
- "liba52",
- "Nick Kurshev",
- "Michel LESPINASSE",
- ""
-};
-
-LIBAD_EXTERN(liba52)
-
-static int a52_fillbuff(sh_audio_t *sh_audio)
-{
-int length=0;
-int flags=0;
-int sample_rate=0;
-int bit_rate=0;
-
- sh_audio->a_in_buffer_len=0;
- /* sync frame:*/
-while(1){
- while(sh_audio->a_in_buffer_len<8){
- int c=demux_getc(sh_audio->ds);
- if(c<0) return -1; /* EOF*/
- sh_audio->a_in_buffer[sh_audio->a_in_buffer_len++]=c;
- }
- if(sh_audio->format==MKTAG('d','n','e','t')) swab(sh_audio->a_in_buffer,sh_audio->a_in_buffer,8);
- length = a52_syncinfo (sh_audio->a_in_buffer, &flags, &sample_rate, &bit_rate);
- if(length>=7 && length<=3840) break; /* we're done.*/
- /* bad file => resync*/
- if(sh_audio->format==MKTAG('d','n','e','t')) swab(sh_audio->a_in_buffer,sh_audio->a_in_buffer,8);
- memmove(sh_audio->a_in_buffer,sh_audio->a_in_buffer+1,7);
- --sh_audio->a_in_buffer_len;
-}
- mp_msg(MSGT_DECAUDIO,MSGL_DBG2,"a52: len=%d flags=0x%X %d Hz %d bit/s\n",length,flags,sample_rate,bit_rate);
- sh_audio->samplerate=sample_rate;
- sh_audio->i_bps=bit_rate/8;
- sh_audio->samplesize=sh_audio->sample_format==AF_FORMAT_FLOAT_NE ? 4 : 2;
- demux_read_data(sh_audio->ds,sh_audio->a_in_buffer+8,length-8);
- if(sh_audio->format==MKTAG('d','n','e','t'))
- swab(sh_audio->a_in_buffer+8,sh_audio->a_in_buffer+8,length-8);
-
-#ifdef CONFIG_LIBA52_INTERNAL
- if(crc16_block(sh_audio->a_in_buffer+2,length-2)!=0)
- mp_msg(MSGT_DECAUDIO,MSGL_STATUS,"a52: CRC check failed! \n");
-#endif
-
- return length;
-}
-
-/* returns: number of available channels*/
-static int a52_printinfo(sh_audio_t *sh_audio){
-int flags, sample_rate, bit_rate;
-char* mode="unknown";
-int channels=0;
- a52_syncinfo (sh_audio->a_in_buffer, &flags, &sample_rate, &bit_rate);
- switch(flags&A52_CHANNEL_MASK){
- case A52_CHANNEL: mode="channel"; channels=2; break;
- case A52_MONO: mode="mono"; channels=1; break;
- case A52_STEREO: mode="stereo"; channels=2; break;
- case A52_3F: mode="3f";channels=3;break;
- case A52_2F1R: mode="2f+1r";channels=3;break;
- case A52_3F1R: mode="3f+1r";channels=4;break;
- case A52_2F2R: mode="2f+2r";channels=4;break;
- case A52_3F2R: mode="3f+2r";channels=5;break;
- case A52_CHANNEL1: mode="channel1"; channels=2; break;
- case A52_CHANNEL2: mode="channel2"; channels=2; break;
- case A52_DOLBY: mode="dolby"; channels=2; break;
- }
- mp_msg(MSGT_DECAUDIO,MSGL_V,"AC3: %d.%d (%s%s) %d Hz %3.1f kbit/s\n",
- channels, (flags&A52_LFE)?1:0,
- mode, (flags&A52_LFE)?"+lfe":"",
- sample_rate, bit_rate*0.001f);
- return (flags&A52_LFE) ? (channels+1) : channels;
-}
-
-static sample_t dynrng_call (sample_t c, void *data)
-{
- struct MPOpts *opts = data;
- //fprintf(stderr, "(%f, %f): %f\n", (double)c, (double)drc_level, (double)pow((double)c, drc_level));
- //fprintf(stderr, "(%lf, %lf): %lf\n", (double)c, opts->drc_level, pow(c, opts->drc_level));
- return pow(c, opts->drc_level);
-}
-
-
-static int preinit(sh_audio_t *sh)
-{
- struct MPOpts *opts = sh->opts;
- /* Dolby AC3 audio: */
- /* however many channels, 2 bytes in a word, 256 samples in a block, 6 blocks in a frame */
- if (sh->samplesize < 4) sh->samplesize = 4;
- sh->audio_out_minsize=opts->audio_output_channels*sh->samplesize*256*6;
- sh->audio_in_minsize=3840;
- a52_level = 1.0;
- return 1;
-}
-
-/**
- * \brief Function to convert the "planar" float format used by liba52
- * into the interleaved float format used by libaf/libao2.
- * \param in the input buffer containing the planar samples.
- * \param out the output buffer where the interleaved result is stored.
- */
-static int a52_resample_float(float *in, int16_t *out)
-{
- unsigned long i;
- float *p = (float*) out;
- for (i = 0; i != 256; i++) {
- unsigned long map = channel_map;
- do {
- unsigned long ch = map & 15;
- if (ch == 15)
- *p = 0;
- else
- *p = in[i + ((ch-1)<<8)];
- p++;
- } while ((map >>= 4));
- }
- return (int16_t*) p - out;
-}
-
-static int init(sh_audio_t *sh_audio)
-{
- struct MPOpts *opts = sh_audio->opts;
- uint32_t a52_accel=0;
- sample_t level=a52_level, bias=384;
- int flags=0;
- /* Dolby AC3 audio:*/
-#ifdef MM_ACCEL_X86_SSE
- if(gCpuCaps.hasSSE) a52_accel|=MM_ACCEL_X86_SSE;
-#endif
- if(gCpuCaps.hasMMX) a52_accel|=MM_ACCEL_X86_MMX;
- if(gCpuCaps.hasMMX2) a52_accel|=MM_ACCEL_X86_MMXEXT;
- a52_state=a52_init (a52_accel);
- if (a52_state == NULL) {
- mp_msg(MSGT_DECAUDIO,MSGL_ERR,"A52 init failed\n");
- return 0;
- }
- sh_audio->sample_format = AF_FORMAT_FLOAT_NE;
- if(a52_fillbuff(sh_audio)<0){
- mp_msg(MSGT_DECAUDIO,MSGL_ERR,"A52 sync failed\n");
- return 0;
- }
-
- /* Init a52 dynrng */
- if (opts->drc_level < 0.001) {
- /* level == 0 --> no compression, init library without callback */
- a52_drc_action = DRC_NO_COMPRESSION;
- } else if (opts->drc_level > 0.999 && opts->drc_level < 1.001) {
- /* level == 1 --> full compression, do nothing at all (library default = full compression) */
- a52_drc_action = DRC_NO_ACTION;
- } else {
- a52_drc_action = DRC_CALLBACK;
- }
- /* Library init for dynrng has to be done for each frame, see decode_audio() */
-
-
- /* 'a52 cannot upmix' hotfix:*/
- a52_printinfo(sh_audio);
- sh_audio->channels=opts->audio_output_channels;
-while(sh_audio->channels>0){
- switch(sh_audio->channels){
- case 1: a52_flags=A52_MONO; break;
-/* case 2: a52_flags=A52_STEREO; break;*/
- case 2: a52_flags=A52_DOLBY; break;
-/* case 3: a52_flags=A52_3F; break;*/
- case 3: a52_flags=A52_2F1R; break;
- case 4: a52_flags=A52_2F2R; break; /* 2+2*/
- case 5: a52_flags=A52_3F2R; break;
- case 6: a52_flags=A52_3F2R|A52_LFE; break; /* 5.1*/
- }
- /* test:*/
- flags=a52_flags|A52_ADJUST_LEVEL;
- mp_msg(MSGT_DECAUDIO,MSGL_V,"A52 flags before a52_frame: 0x%X\n",flags);
- if (a52_frame (a52_state, sh_audio->a_in_buffer, &flags, &level, bias)){
- mp_msg(MSGT_DECAUDIO,MSGL_ERR,"a52: error decoding frame -> nosound\n");
- return 0;
- }
- mp_msg(MSGT_DECAUDIO,MSGL_V,"A52 flags after a52_frame: 0x%X\n",flags);
- /* frame decoded, let's init resampler:*/
- channel_map = 0;
- if (sh_audio->sample_format == AF_FORMAT_FLOAT_NE) {
- if (!(flags & A52_LFE)) {
- switch ((flags<<3) | sh_audio->channels) {
- case (A52_MONO << 3) | 1: channel_map = 0x1; break;
- case (A52_CHANNEL << 3) | 2:
- case (A52_STEREO << 3) | 2:
- case (A52_DOLBY << 3) | 2: channel_map = 0x21; break;
- case (A52_2F1R << 3) | 3: channel_map = 0x321; break;
- case (A52_2F2R << 3) | 4: channel_map = 0x4321; break;
- case (A52_3F << 3) | 5: channel_map = 0x2ff31; break;
- case (A52_3F2R << 3) | 5: channel_map = 0x25431; break;
- }
- } else if (sh_audio->channels == 6) {
- switch (flags & ~A52_LFE) {
- case A52_MONO : channel_map = 0x12ffff; break;
- case A52_CHANNEL:
- case A52_STEREO :
- case A52_DOLBY : channel_map = 0x1fff32; break;
- case A52_3F : channel_map = 0x13ff42; break;
- case A52_2F1R : channel_map = 0x1f4432; break;
- case A52_2F2R : channel_map = 0x1f5432; break;
- case A52_3F2R : channel_map = 0x136542; break;
- }
- }
- if (channel_map) {
- a52_resample = a52_resample_float;
- break;
- }
- } else
- break;
-}
- if(sh_audio->channels<=0){
- mp_msg(MSGT_DECAUDIO,MSGL_ERR,"a52: no resampler. try different channel setup!\n");
- return 0;
- }
- return 1;
-}
-
-static void uninit(sh_audio_t *sh)
-{
- a52_free(a52_state);
-}
-
-static int control(sh_audio_t *sh,int cmd,void* arg, ...)
-{
- switch(cmd)
- {
- case ADCTRL_RESYNC_STREAM:
- case ADCTRL_SKIP_FRAME:
- a52_fillbuff(sh);
- return CONTROL_TRUE;
- case ADCTRL_SET_VOLUME: {
- float vol = *(float*)arg;
- if (vol > 60.0) vol = 60.0;
- a52_level = vol <= -200.0 ? 0 : pow(10.0,vol/20.0);
- return CONTROL_TRUE;
- }
- case ADCTRL_QUERY_FORMAT:
- if (*(int*)arg == AF_FORMAT_S16_NE ||
- *(int*)arg == AF_FORMAT_FLOAT_NE)
- return CONTROL_TRUE;
- return CONTROL_FALSE;
- }
- return CONTROL_UNKNOWN;
-}
-
-static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
-{
- sample_t level=a52_level, bias=384;
- int flags=a52_flags|A52_ADJUST_LEVEL;
- int i,len=-1;
- if (sh_audio->sample_format == AF_FORMAT_FLOAT_NE)
- bias = 0;
- if(!sh_audio->a_in_buffer_len)
- if(a52_fillbuff(sh_audio)<0) return len; /* EOF */
- sh_audio->a_in_buffer_len=0;
- if (a52_frame (a52_state, sh_audio->a_in_buffer, &flags, &level, bias)){
- mp_msg(MSGT_DECAUDIO,MSGL_WARN,"a52: error decoding frame\n");
- return len;
- }
-
- /* handle dynrng */
- if (a52_drc_action != DRC_NO_ACTION) {
- if (a52_drc_action == DRC_NO_COMPRESSION)
- a52_dynrng(a52_state, NULL, NULL);
- else
- a52_dynrng(a52_state, dynrng_call, sh_audio->opts);
- }
-
- len=0;
- for (i = 0; i < 6; i++) {
- if (a52_block (a52_state)){
- mp_msg(MSGT_DECAUDIO,MSGL_WARN,"a52: error at resampling\n");
- break;
- }
- len+=2*a52_resample(a52_samples(a52_state),(int16_t *)&buf[len]);
- }
- assert(len <= maxlen);
- return len;
-}
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