libdts support by (Benjamin Zores <ben at geexbox dot org>)

Originally committed as revision 3310 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -22,6 +22,7 @@ echo "  --enable-faac            enable faac support via libfaac [default=no]"
 echo "  --enable-mingw32         enable mingw32 native/cross windows compile"
 echo "  --enable-a52             enable GPL'ed A52 support [default=no]"
 echo "  --enable-a52bin          open liba52.so.0 at runtime [default=no]"
+echo "  --enable-dts             enable GPL'ed DTS support [default=no]"
 echo "  --enable-pp              enable GPL'ed post processing support [default=no]"
 echo "  --enable-shared-pp       use libpostproc.so [default=no]"
 echo "  --enable-shared          build shared libraries [default=no]"
@@ -143,6 +144,7 @@ faadbin="no"
 faac="no"
 a52="no"
 a52bin="no"
+dts="no"
 pp="no"
 shared_pp="no"
 mingw32="no"
@@ -381,6 +383,8 @@ for opt do
   ;;
   --enable-a52bin) a52bin="yes" ; extralibs="$ldl $extralibs"
   ;;
+  --enable-dts) dts="yes" ; extralibs="$extralibs -ldts"
+  ;;
   --enable-pp) pp="yes"
   ;;
   --enable-shared-pp) shared_pp="yes"
@@ -444,6 +448,11 @@ if test "$gpl" != "yes"; then
         echo "liba52 is under GPL and --enable-gpl is not specified"
         fail="yes"
     fi
+
+    if test "$dts" != "no"; then
+        echo "libdts is under GPL and --enable-gpl is not specified"
+        fail="yes"
+    fi
     
     if test "$faad" != "no" -o "$faadbin" != "no"; then
         cat > $TMPC << EOF
@@ -973,6 +982,7 @@ echo "faadbin enabled  $faadbin"
 echo "faac enabled     $faac"
 echo "a52 support      $a52"
 echo "a52 dlopened     $a52bin"
+echo "dts support      $dts"
 echo "pp support       $pp"
 echo "debug symbols    $debug"
 echo "optimize         $optimize"
@@ -1169,6 +1179,12 @@ if test "$a52" = "yes" ; then
   fi
 fi
 
+# DTS
+if test "$dts" = "yes" ; then
+  echo "#define CONFIG_DTS 1" >> $TMPH
+  echo "CONFIG_DTS=yes" >> config.mak
+fi
+
 # PP
 if test "$pp" = "yes" ; then
   echo "#define CONFIG_PP 1" >> $TMPH

ffmpeg.c

@@ -1502,8 +1502,9 @@ static int av_encode(AVFormatContext **output_files,
                     ost->audio_resample = 0;
                 } else {
                     if (codec->channels != icodec->channels &&
-                        icodec->codec_id == CODEC_ID_AC3) {
-                        /* Special case for 5:1 AC3 input */
+                        (icodec->codec_id == CODEC_ID_AC3 ||
+                         icodec->codec_id == CODEC_ID_DTS)) {
+                        /* Special case for 5:1 AC3 and DTS input */
                         /* and mono or stereo output      */
                         /* Request specific number of channels */
                         icodec->channels = codec->channels;
@@ -3144,9 +3145,10 @@ static void opt_output_file(const char *filename)
                 audio_enc->bit_rate = audio_bit_rate;
                 audio_enc->strict_std_compliance = strict;
                 audio_enc->thread_count = thread_count;
-                /* For audio codecs other than AC3 we limit */
+                /* For audio codecs other than AC3 or DTS we limit */
                 /* the number of coded channels to stereo   */
-                if (audio_channels > 2 && codec_id != CODEC_ID_AC3) {
+                if (audio_channels > 2 && codec_id != CODEC_ID_AC3
+                    && codec_id != CODEC_ID_DTS) {
                     audio_enc->channels = 2;
                 } else
                     audio_enc->channels = audio_channels;

libavcodec/Makefile

@@ -73,6 +73,11 @@ OBJS+= liba52/bit_allocate.o liba52/bitstream.o liba52/downmix.o \
 endif
 endif
 
+# currently using libdts for dts decoding
+ifeq ($(CONFIG_DTS),yes)
+OBJS+= dtsdec.o
+endif
+
 ifeq ($(CONFIG_FAAD),yes)
 OBJS+= faad.o
 ifeq ($(CONFIG_FAADBIN),yes)

libavcodec/allcodecs.c

@@ -150,6 +150,9 @@ void avcodec_register_all(void)
     register_avcodec(&zlib_decoder);
 #ifdef CONFIG_AC3
     register_avcodec(&ac3_decoder);
+#endif
+#ifdef CONFIG_DTS
+    register_avcodec(&dts_decoder);
 #endif
     register_avcodec(&ra_144_decoder);
     register_avcodec(&ra_288_decoder);

libavcodec/avcodec.c

@@ -38,6 +38,7 @@ static AVCodec* avcodec_find_by_fcc(uint32_t fcc)
 	{ CODEC_ID_MJPEG, { MKTAG('M', 'J', 'P', 'G'), 0 } },
 	{ CODEC_ID_MPEG1VIDEO, { MKTAG('P', 'I', 'M', '1'), 0 } },
 	{ CODEC_ID_AC3, { 0x2000, 0 } },
+	{ CODEC_ID_DTS, { 0x10, 0 } },
 	{ CODEC_ID_MP2, { 0x50, 0x55, 0 } },
 	{ CODEC_ID_FLV1, { MKTAG('F', 'L', 'V', '1'), 0 } },
 

libavcodec/avcodec.h

@@ -140,6 +140,8 @@ enum CodecID {
     
     CODEC_ID_MPEG2TS, /* _FAKE_ codec to indicate a raw MPEG2 transport
                          stream (only used by libavformat) */
+
+    CODEC_ID_DTS,
 };
 
 /* CODEC_ID_MP3LAME is absolete */
@@ -1858,6 +1860,7 @@ extern AVCodec rawvideo_decoder;
 
 /* the following codecs use external GPL libs */
 extern AVCodec ac3_decoder;
+extern AVCodec dts_decoder;
 
 /* resample.c */
 

libavcodec/dts_internal.h

@@ -0,0 +1,203 @@
+/*
+ * dts_internal.h
+ * Copyright (C) 2004 Gildas Bazin <gbazin@videolan.org>
+ * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of dtsdec, a free DTS Coherent Acoustics stream decoder.
+ * See http://www.videolan.org/dtsdec.html for updates.
+ *
+ * dtsdec 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.
+ *
+ * dtsdec 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define DTS_SUBFRAMES_MAX (16)
+#define DTS_PRIM_CHANNELS_MAX (5)
+#define DTS_SUBBANDS (32)
+#define DTS_ABITS_MAX (32) /* Should be 28 */
+#define DTS_SUBSUBFAMES_MAX (4)
+#define DTS_LFE_MAX (3)
+
+struct dts_state_s {
+
+    /* Frame header */
+    int frame_type;             /* type of the current frame */
+    int samples_deficit;        /* deficit sample count */
+    int crc_present;            /* crc is present in the bitstream */
+    int sample_blocks;          /* number of PCM sample blocks */
+    int frame_size;             /* primary frame byte size */
+    int amode;                  /* audio channels arrangement */
+    int sample_rate;            /* audio sampling rate */
+    int bit_rate;               /* transmission bit rate */
+
+    int downmix;                /* embedded downmix enabled */
+    int dynrange;               /* embedded dynamic range flag */
+    int timestamp;              /* embedded time stamp flag */
+    int aux_data;               /* auxiliary data flag */
+    int hdcd;                   /* source material is mastered in HDCD */
+    int ext_descr;              /* extension audio descriptor flag */
+    int ext_coding;             /* extended coding flag */
+    int aspf;                   /* audio sync word insertion flag */
+    int lfe;                    /* low frequency effects flag */
+    int predictor_history;      /* predictor history flag */
+    int header_crc;             /* header crc check bytes */
+    int multirate_inter;        /* multirate interpolator switch */
+    int version;                /* encoder software revision */
+    int copy_history;           /* copy history */
+    int source_pcm_res;         /* source pcm resolution */
+    int front_sum;              /* front sum/difference flag */
+    int surround_sum;           /* surround sum/difference flag */
+    int dialog_norm;            /* dialog normalisation parameter */
+
+    /* Primary audio coding header */
+    int subframes;              /* number of subframes */
+    int prim_channels;          /* number of primary audio channels */
+    /* subband activity count */
+    int subband_activity[DTS_PRIM_CHANNELS_MAX];
+    /* high frequency vq start subband */
+    int vq_start_subband[DTS_PRIM_CHANNELS_MAX];
+    /* joint intensity coding index */
+    int joint_intensity[DTS_PRIM_CHANNELS_MAX];
+    /* transient mode code book */
+    int transient_huffman[DTS_PRIM_CHANNELS_MAX];
+    /* scale factor code book */
+    int scalefactor_huffman[DTS_PRIM_CHANNELS_MAX];
+    /* bit allocation quantizer select */
+    int bitalloc_huffman[DTS_PRIM_CHANNELS_MAX];
+    /* quantization index codebook select */
+    int quant_index_huffman[DTS_PRIM_CHANNELS_MAX][DTS_ABITS_MAX];
+    /* scale factor adjustment */
+    float scalefactor_adj[DTS_PRIM_CHANNELS_MAX][DTS_ABITS_MAX];
+
+    /* Primary audio coding side information */
+    int subsubframes;           /* number of subsubframes */
+    int partial_samples;        /* partial subsubframe samples count */
+    /* prediction mode (ADPCM used or not) */
+    int prediction_mode[DTS_PRIM_CHANNELS_MAX][DTS_SUBBANDS];
+    /* prediction VQ coefs */
+    int prediction_vq[DTS_PRIM_CHANNELS_MAX][DTS_SUBBANDS];
+    /* bit allocation index */
+    int bitalloc[DTS_PRIM_CHANNELS_MAX][DTS_SUBBANDS];
+    /* transition mode (transients) */
+    int transition_mode[DTS_PRIM_CHANNELS_MAX][DTS_SUBBANDS];
+    /* scale factors (2 if transient)*/
+    int scale_factor[DTS_PRIM_CHANNELS_MAX][DTS_SUBBANDS][2];
+    /* joint subband scale factors codebook */
+    int joint_huff[DTS_PRIM_CHANNELS_MAX];
+    /* joint subband scale factors */
+    int joint_scale_factor[DTS_PRIM_CHANNELS_MAX][DTS_SUBBANDS];
+    /* stereo downmix coefficients */
+    int downmix_coef[DTS_PRIM_CHANNELS_MAX][2];
+    /* dynamic range coefficient */
+    int dynrange_coef;
+
+    /* VQ encoded high frequency subbands */
+    int high_freq_vq[DTS_PRIM_CHANNELS_MAX][DTS_SUBBANDS];
+
+    /* Low frequency effect data */
+    double lfe_data[2*DTS_SUBSUBFAMES_MAX*DTS_LFE_MAX * 2 /*history*/];
+    int lfe_scale_factor;
+
+    /* Subband samples history (for ADPCM) */
+    double subband_samples_hist[DTS_PRIM_CHANNELS_MAX][DTS_SUBBANDS][4];
+    double subband_fir_hist[DTS_PRIM_CHANNELS_MAX][512];
+    double subband_fir_noidea[DTS_PRIM_CHANNELS_MAX][64];
+
+    /* Audio output */
+    level_t clev;            /* centre channel mix level */
+    level_t slev;            /* surround channels mix level */
+
+    int output;              /* type of output */
+    level_t level;           /* output level */
+    sample_t bias;           /* output bias */
+
+    sample_t * samples;      /* pointer to the internal audio samples buffer */
+    int downmixed;
+
+    int dynrnge;             /* apply dynamic range */
+    level_t dynrng;          /* dynamic range */
+    void * dynrngdata;       /* dynamic range callback funtion and data */
+    level_t (* dynrngcall) (level_t range, void * dynrngdata);
+
+    /* Bitstream handling */
+    uint32_t * buffer_start;
+    uint32_t bits_left;
+    uint32_t current_word;
+    int      word_mode;         /* 16/14 bits word format (1 -> 16, 0 -> 14) */
+    int      bigendian_mode;    /* endianness (1 -> be, 0 -> le) */
+
+    /* Current position in DTS frame */
+    int current_subframe;
+    int current_subsubframe;
+
+    /* Pre-calculated cosine modulation coefs for the QMF */
+    double cos_mod[544];
+
+    /* Debug flag */
+    int debug_flag;
+};
+
+#define LEVEL_PLUS6DB 2.0
+#define LEVEL_PLUS3DB 1.4142135623730951
+#define LEVEL_3DB 0.7071067811865476
+#define LEVEL_45DB 0.5946035575013605
+#define LEVEL_6DB 0.5
+
+int dts_downmix_init (int input, int flags, level_t * level,
+                      level_t clev, level_t slev);
+int dts_downmix_coeff (level_t * coeff, int acmod, int output, level_t level,
+                       level_t clev, level_t slev);
+void dts_downmix (sample_t * samples, int acmod, int output, sample_t bias,
+                  level_t clev, level_t slev);
+void dts_upmix (sample_t * samples, int acmod, int output);
+
+#define ROUND(x) ((int)((x) + ((x) > 0 ? 0.5 : -0.5)))
+
+#ifndef LIBDTS_FIXED
+
+typedef sample_t quantizer_t;
+#define SAMPLE(x) (x)
+#define LEVEL(x) (x)
+#define MUL(a,b) ((a) * (b))
+#define MUL_L(a,b) ((a) * (b))
+#define MUL_C(a,b) ((a) * (b))
+#define DIV(a,b) ((a) / (b))
+#define BIAS(x) ((x) + bias)
+
+#else /* LIBDTS_FIXED */
+
+typedef int16_t quantizer_t;
+#define SAMPLE(x) (sample_t)((x) * (1 << 30))
+#define LEVEL(x) (level_t)((x) * (1 << 26))
+
+#if 0
+#define MUL(a,b) ((int)(((int64_t)(a) * (b) + (1 << 29)) >> 30))
+#define MUL_L(a,b) ((int)(((int64_t)(a) * (b) + (1 << 25)) >> 26))
+#elif 1
+#define MUL(a,b) \
+({ int32_t _ta=(a), _tb=(b), _tc; \
+   _tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)(((_tc >> 14))+ (((_ta >> 16)*(_tb >> 16)) << 2 )); })
+#define MUL_L(a,b) \
+({ int32_t _ta=(a), _tb=(b), _tc; \
+   _tc=(_ta & 0xffff)*(_tb >> 16)+(_ta >> 16)*(_tb & 0xffff); (int32_t)((_tc >> 10) + (((_ta >> 16)*(_tb >> 16)) << 6)); })
+#else
+#define MUL(a,b) (((a) >> 15) * ((b) >> 15))
+#define MUL_L(a,b) (((a) >> 13) * ((b) >> 13))
+#endif
+
+#define MUL_C(a,b) MUL_L (a, LEVEL (b))
+#define DIV(a,b) ((((int64_t)LEVEL (a)) << 26) / (b))
+#define BIAS(x) (x)
+
+#endif

libavcodec/dtsdec.c

@@ -0,0 +1,349 @@
+/*
+ * dtsdec.c : free DTS Coherent Acoustics stream decoder.
+ * Copyright (C) 2004 Benjamin Zores <ben@geexbox.org>
+ *
+ * This file is part of libavcodec.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_AV_CONFIG_H
+#undef HAVE_AV_CONFIG_H
+#endif
+
+#include "avcodec.h"
+#include <dts.h>
+#include "dts_internal.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <malloc.h>
+#include <math.h>
+
+#define INBUF_SIZE 4096
+#define BUFFER_SIZE 4096
+#define HEADER_SIZE 14
+
+#ifdef LIBDTS_FIXED
+#define CONVERT_LEVEL (1 << 26)
+#define CONVERT_BIAS 0
+#else
+#define CONVERT_LEVEL 1
+#define CONVERT_BIAS 384
+#endif
+
+static void
+pre_calc_cosmod (dts_state_t * state)
+{
+  int i, j, k;
+
+  for (j=0,k=0;k<16;k++)
+    for (i=0;i<16;i++)
+      state->cos_mod[j++] = cos((2*i+1)*(2*k+1)*M_PI/64);
+
+  for (k=0;k<16;k++)
+    for (i=0;i<16;i++)
+      state->cos_mod[j++] = cos((i)*(2*k+1)*M_PI/32);
+
+  for (k=0;k<16;k++)
+    state->cos_mod[j++] = 0.25/(2*cos((2*k+1)*M_PI/128));
+
+  for (k=0;k<16;k++)
+    state->cos_mod[j++] = -0.25/(2.0*sin((2*k+1)*M_PI/128));
+}
+
+static inline
+int16_t convert (int32_t i)
+{
+#ifdef LIBDTS_FIXED
+    i >>= 15;
+#else
+    i -= 0x43c00000;
+#endif
+    return (i > 32767) ? 32767 : ((i < -32768) ? -32768 : i);
+}
+
+void
+convert2s16_2 (sample_t * _f, int16_t * s16)
+{
+  int i;
+  int32_t * f = (int32_t *) _f;
+
+  for (i = 0; i < 256; i++)
+    {
+      s16[2*i] = convert (f[i]);
+      s16[2*i+1] = convert (f[i+256]);
+    }
+}
+
+void
+convert2s16_4 (sample_t * _f, int16_t * s16)
+{
+  int i;
+  int32_t * f = (int32_t *) _f;
+
+  for (i = 0; i < 256; i++)
+    {
+      s16[4*i] = convert (f[i]);
+      s16[4*i+1] = convert (f[i+256]);
+      s16[4*i+2] = convert (f[i+512]);
+      s16[4*i+3] = convert (f[i+768]);
+    }
+}
+
+void
+convert2s16_5 (sample_t * _f, int16_t * s16)
+{
+  int i;
+  int32_t * f = (int32_t *) _f;
+
+  for (i = 0; i < 256; i++)
+    {
+      s16[5*i] = convert (f[i]);
+      s16[5*i+1] = convert (f[i+256]);
+      s16[5*i+2] = convert (f[i+512]);
+      s16[5*i+3] = convert (f[i+768]);
+      s16[5*i+4] = convert (f[i+1024]);
+    }
+}
+
+static void
+convert2s16_multi (sample_t * _f, int16_t * s16, int flags)
+{
+  int i;
+  int32_t * f = (int32_t *) _f;
+
+  switch (flags)
+    {
+    case DTS_MONO:
+      for (i = 0; i < 256; i++)
+        {
+          s16[5*i] = s16[5*i+1] = s16[5*i+2] = s16[5*i+3] = 0;
+          s16[5*i+4] = convert (f[i]);
+        }
+      break;
+    case DTS_CHANNEL:
+    case DTS_STEREO:
+    case DTS_DOLBY:
+      convert2s16_2 (_f, s16);
+      break;
+    case DTS_3F:
+      for (i = 0; i < 256; i++)
+        {
+          s16[5*i] = convert (f[i]);
+          s16[5*i+1] = convert (f[i+512]);
+          s16[5*i+2] = s16[5*i+3] = 0;
+          s16[5*i+4] = convert (f[i+256]);
+        }
+      break;
+    case DTS_2F2R:
+      convert2s16_4 (_f, s16);
+      break;
+    case DTS_3F2R:
+      convert2s16_5 (_f, s16);
+      break;
+    case DTS_MONO | DTS_LFE:
+      for (i = 0; i < 256; i++)
+        {
+          s16[6*i] = s16[6*i+1] = s16[6*i+2] = s16[6*i+3] = 0;
+          s16[6*i+4] = convert (f[i+256]);
+          s16[6*i+5] = convert (f[i]);
+        }
+      break;
+    case DTS_CHANNEL | DTS_LFE:
+    case DTS_STEREO | DTS_LFE:
+    case DTS_DOLBY | DTS_LFE:
+      for (i = 0; i < 256; i++)
+        {
+          s16[6*i] = convert (f[i+256]);
+          s16[6*i+1] = convert (f[i+512]);
+          s16[6*i+2] = s16[6*i+3] = s16[6*i+4] = 0;
+          s16[6*i+5] = convert (f[i]);
+        }
+      break;
+    case DTS_3F | DTS_LFE:
+      for (i = 0; i < 256; i++)
+        {
+          s16[6*i] = convert (f[i+256]);
+          s16[6*i+1] = convert (f[i+768]);
+          s16[6*i+2] = s16[6*i+3] = 0;
+          s16[6*i+4] = convert (f[i+512]);
+          s16[6*i+5] = convert (f[i]);
+        }
+      break;
+    case DTS_2F2R | DTS_LFE:
+      for (i = 0; i < 256; i++)
+        {
+          s16[6*i] = convert (f[i+256]);
+          s16[6*i+1] = convert (f[i+512]);
+          s16[6*i+2] = convert (f[i+768]);
+          s16[6*i+3] = convert (f[i+1024]);
+          s16[6*i+4] = 0;
+          s16[6*i+5] = convert (f[i]);
+        }
+      break;
+    case DTS_3F2R | DTS_LFE:
+      for (i = 0; i < 256; i++)
+        {
+          s16[6*i] = convert (f[i+256]);
+          s16[6*i+1] = convert (f[i+768]);
+          s16[6*i+2] = convert (f[i+1024]);
+          s16[6*i+3] = convert (f[i+1280]);
+          s16[6*i+4] = convert (f[i+512]);
+          s16[6*i+5] = convert (f[i]);
+        }
+      break;
+    }
+}
+
+static int
+channels_multi (int flags)
+{
+  if (flags & DTS_LFE)
+    return 6;
+  else if (flags & 1)	/* center channel */
+    return 5;
+  else if ((flags & DTS_CHANNEL_MASK) == DTS_2F2R)
+    return 4;
+  else
+    return 2;
+}
+
+static int
+dts_decode_frame (AVCodecContext *avctx, void *data, int *data_size,
+                  uint8_t *buff, int buff_size)
+{
+  uint8_t * start = buff;
+  uint8_t * end = buff + buff_size;
+  *data_size = 0;
+
+  static uint8_t buf[BUFFER_SIZE];
+  static uint8_t * bufptr = buf;
+  static uint8_t * bufpos = buf + HEADER_SIZE;
+
+  static int sample_rate;
+  static int frame_length;
+  static int flags;
+  int bit_rate;
+  int len;
+  dts_state_t *state = avctx->priv_data;
+
+  while (1)
+    {
+      len = end - start;
+      if (!len)
+        break;
+      if (len > bufpos - bufptr)
+        len = bufpos - bufptr;
+      memcpy (bufptr, start, len);
+      bufptr += len;
+      start += len;
+      if (bufptr == bufpos)
+        {
+          if (bufpos == buf + HEADER_SIZE)
+            {
+              int length;
+
+              length = dts_syncinfo (state, buf, &flags, &sample_rate,
+                                     &bit_rate, &frame_length);
+              if (!length)
+                {
+                  av_log (NULL, AV_LOG_INFO, "skip\n");
+                  for (bufptr = buf; bufptr < buf + HEADER_SIZE-1; bufptr++)
+                    bufptr[0] = bufptr[1];
+                  continue;
+                }
+              bufpos = buf + length;
+            }
+          else
+            {
+              level_t level;
+              sample_t bias;
+              int i;
+
+              flags = 2; /* ???????????? */
+              level = CONVERT_LEVEL;
+              bias = CONVERT_BIAS;
+
+              flags |= DTS_ADJUST_LEVEL;
+              if (dts_frame (state, buf, &flags, &level, bias))
+                goto error;
+              for (i = 0; i < dts_blocks_num (state); i++)
+                {
+                  if (dts_block (state))
+                    goto error;
+                  {
+                    int chans;
+                    chans = channels_multi (flags);
+                    convert2s16_multi (dts_samples (state), data,
+                                       flags & (DTS_CHANNEL_MASK | DTS_LFE));
+
+                    data += 256 * sizeof (int16_t) * chans;
+                    *data_size += 256 * sizeof (int16_t) * chans;
+                  }
+                }
+              bufptr = buf;
+              bufpos = buf + HEADER_SIZE;
+              continue;
+            error:
+              av_log (NULL, AV_LOG_ERROR, "error\n");
+              bufptr = buf;
+              bufpos = buf + HEADER_SIZE;
+            }
+        }
+    }
+
+  return buff_size;
+}
+
+static int
+dts_decode_init (AVCodecContext *avctx)
+{
+  dts_state_t * state;
+  int i;
+
+  state = avctx->priv_data;
+  memset (state, 0, sizeof (dts_state_t));
+
+  state->samples = (sample_t *) memalign (16, 256 * 12 * sizeof (sample_t));
+  if (state->samples == NULL)
+    return 1;
+
+  for (i = 0; i < 256 * 12; i++)
+    state->samples[i] = 0;
+
+  /* Pre-calculate cosine modulation coefficients */
+  pre_calc_cosmod (state);
+  state->downmixed = 1;
+
+  return 0;
+}
+
+static int
+dts_decode_end (AVCodecContext *s)
+{
+  return 0;
+}
+
+AVCodec dts_decoder = {
+  "dts", 
+  CODEC_TYPE_AUDIO,
+  CODEC_ID_DTS,
+  sizeof (dts_state_t),
+  dts_decode_init,
+  NULL,
+  dts_decode_end,
+  dts_decode_frame,
+};

libavformat/matroska.c

@@ -2228,6 +2228,9 @@ matroska_read_header (AVFormatContext    *s,
             else if (!strcmp(track->codec_id,
                              MATROSKA_CODEC_ID_AUDIO_AC3))
                 codec_id = CODEC_ID_AC3;
+            else if (!strcmp(track->codec_id,
+                             MATROSKA_CODEC_ID_AUDIO_DTS))
+                codec_id = CODEC_ID_DTS;
             /* No such codec id so far. */
 /*             else if (!strcmp(track->codec_id, */
 /*                              MATROSKA_CODEC_ID_AUDIO_DTS)) */

libavformat/mpeg.c

@@ -77,6 +77,7 @@ typedef struct {
 #define AUDIO_ID 0xc0
 #define VIDEO_ID 0xe0
 #define AC3_ID   0x80
+#define DTS_ID   0x8a
 #define LPCM_ID  0xa0
 
 static const int lpcm_freq_tab[4] = { 48000, 96000, 44100, 32000 };
@@ -235,7 +236,7 @@ static int get_system_header_size(AVFormatContext *ctx)
 static int mpeg_mux_init(AVFormatContext *ctx)
 {
     MpegMuxContext *s = ctx->priv_data;
-    int bitrate, i, mpa_id, mpv_id, ac3_id, lpcm_id, j;
+    int bitrate, i, mpa_id, mpv_id, ac3_id, dts_id, lpcm_id, j;
     AVStream *st;
     StreamInfo *stream;
     int audio_bitrate;
@@ -258,6 +259,7 @@ static int mpeg_mux_init(AVFormatContext *ctx)
     s->video_bound = 0;
     mpa_id = AUDIO_ID;
     ac3_id = AC3_ID;
+    dts_id = DTS_ID;
     mpv_id = VIDEO_ID;
     lpcm_id = LPCM_ID;
     s->scr_stream_index = -1;
@@ -272,6 +274,8 @@ static int mpeg_mux_init(AVFormatContext *ctx)
         case CODEC_TYPE_AUDIO:
             if (st->codec.codec_id == CODEC_ID_AC3) {
                 stream->id = ac3_id++;
+            } else if (st->codec.codec_id == CODEC_ID_DTS) {
+                stream->id = dts_id++;
             } else if (st->codec.codec_id == CODEC_ID_PCM_S16BE) {
                 stream->id = lpcm_id++;
                 for(j = 0; j < 4; j++) {
@@ -1304,9 +1308,12 @@ static int mpegps_read_packet(AVFormatContext *s,
     } else if (startcode >= 0x1c0 && startcode <= 0x1df) {
         type = CODEC_TYPE_AUDIO;
         codec_id = CODEC_ID_MP2;
-    } else if (startcode >= 0x80 && startcode <= 0x9f) {
+    } else if (startcode >= 0x80 && startcode <= 0x89) {
         type = CODEC_TYPE_AUDIO;
         codec_id = CODEC_ID_AC3;
+    } else if (startcode >= 0x8a && startcode <= 0x9f) {
+        type = CODEC_TYPE_AUDIO;
+        codec_id = CODEC_ID_DTS;
     } else if (startcode >= 0xa0 && startcode <= 0xbf) {
         type = CODEC_TYPE_AUDIO;
         codec_id = CODEC_ID_PCM_S16BE;

libavformat/mpegts.c

@@ -431,6 +431,7 @@ static void pmt_cb(void *opaque, const uint8_t *section, int section_len)
         case STREAM_TYPE_VIDEO_H264:
         case STREAM_TYPE_AUDIO_AAC:
         case STREAM_TYPE_AUDIO_AC3:
+        case STREAM_TYPE_AUDIO_DTS:
             add_pes_stream(ts, pid, stream_type);
             break;
         default:
@@ -753,6 +754,10 @@ static void mpegts_push_data(void *opaque,
                             codec_type = CODEC_TYPE_AUDIO;
                             codec_id = CODEC_ID_AC3;
                             break;
+                        case STREAM_TYPE_AUDIO_DTS:
+                            codec_type = CODEC_TYPE_AUDIO;
+                            codec_id = CODEC_ID_DTS;
+                            break;
                         default:
                             if (code >= 0x1c0 && code <= 0x1df) {
                                 codec_type = CODEC_TYPE_AUDIO;

libavformat/mpegts.h

@@ -42,6 +42,7 @@
 #define STREAM_TYPE_VIDEO_H264      0x1b
 
 #define STREAM_TYPE_AUDIO_AC3       0x81
+#define STREAM_TYPE_AUDIO_DTS       0x8a
 
 unsigned int mpegts_crc32(const uint8_t *data, int len);
 extern AVOutputFormat mpegts_mux;

libavformat/raw.c

@@ -184,6 +184,23 @@ static int ac3_read_header(AVFormatContext *s,
     return 0;
 }
 
+/* dts read */
+static int dts_read_header(AVFormatContext *s,
+                           AVFormatParameters *ap)
+{
+    AVStream *st;
+
+    st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR_NOMEM;
+
+    st->codec.codec_type = CODEC_TYPE_AUDIO;
+    st->codec.codec_id = CODEC_ID_DTS;
+    st->need_parsing = 1;
+    /* the parameters will be extracted from the compressed bitstream */
+    return 0;
+}
+
 /* mpeg1/h263 input */
 static int video_read_header(AVFormatContext *s,
                              AVFormatParameters *ap)
@@ -300,6 +317,17 @@ AVOutputFormat ac3_oformat = {
 };
 #endif //CONFIG_ENCODERS
 
+AVInputFormat dts_iformat = {
+    "dts",
+    "raw dts",
+    0,
+    NULL,
+    dts_read_header,
+    raw_read_partial_packet,
+    raw_read_close,
+    .extensions = "dts",
+};
+
 AVInputFormat h261_iformat = {
     "h261",
     "raw h261",
@@ -613,6 +641,8 @@ int raw_init(void)
     av_register_input_format(&ac3_iformat);
     av_register_output_format(&ac3_oformat);
 
+    av_register_input_format(&dts_iformat);
+
     av_register_input_format(&h261_iformat);
 
     av_register_input_format(&h263_iformat);

libavformat/wav.c

@@ -348,6 +348,7 @@ static int wav_read_seek(AVFormatContext *s,
     case CODEC_ID_MP2:
     case CODEC_ID_MP3:
     case CODEC_ID_AC3:
+    case CODEC_ID_DTS:
         /* use generic seeking with dynamically generated indexes */
         return -1;
     default: