/*****************************************************************
 * gmerlin-avdecoder - a general purpose multimedia decoding library
 *
 * Copyright (c) 2001 - 2012 Members of the Gmerlin project
 * gmerlin-general@lists.sourceforge.net
 * http://gmerlin.sourceforge.net
 *
 * This program 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.
 *
 * This program 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, see <http://www.gnu.org/licenses/>.
 * *****************************************************************/

#include <avdec_private.h>
#include <bswap.h>

#include <stdlib.h>
#include <string.h>

#include <stdio.h>

#include <config.h>
#include <codecs.h>

#include <libavcodec/avcodec.h>

#define LOG_DOMAIN "audio_ffmpeg"

#ifdef HAVE_LIBAVCORE_AVCORE_H
#include <libavcore/avcore.h>
#endif

// #define DUMP_DECODE
// #define DUMP_PACKET
// #define DUMP_EXTRADATA

/* Different decoding functions */

// #define DECODE_FUNC avcodec_decode_audio2

#if (LIBAVCORE_VERSION_INT >= ((0<<16)|(10<<8)|0)) || (LIBAVUTIL_VERSION_INT >= ((50<<16)|(38<<8)|0))
#define SampleFormat    AVSampleFormat
#define SAMPLE_FMT_U8   AV_SAMPLE_FMT_U8
#define SAMPLE_FMT_S16  AV_SAMPLE_FMT_S16
#define SAMPLE_FMT_S32  AV_SAMPLE_FMT_S32
#define SAMPLE_FMT_FLT  AV_SAMPLE_FMT_FLT
#define SAMPLE_FMT_DBL  AV_SAMPLE_FMT_DBL
#define SAMPLE_FMT_NONE AV_SAMPLE_FMT_NONE
#endif

/* Sample formats */

static const struct
  {
  enum AVSampleFormat  ffmpeg_fmt;
  gavl_sample_format_t gavl_fmt;
  int planar;
  }
sampleformats[] =
  {
    { AV_SAMPLE_FMT_U8,   GAVL_SAMPLE_U8,     0 },
    { AV_SAMPLE_FMT_S16,  GAVL_SAMPLE_S16,    0 },    ///< signed 16 bits
    { AV_SAMPLE_FMT_S32,  GAVL_SAMPLE_S32,    0 },    ///< signed 32 bits
    { AV_SAMPLE_FMT_FLT,  GAVL_SAMPLE_FLOAT,  0 },  ///< float
    { AV_SAMPLE_FMT_DBL,  GAVL_SAMPLE_DOUBLE, 0 }, ///< double
    { AV_SAMPLE_FMT_U8P,  GAVL_SAMPLE_U8,     1 },
    { AV_SAMPLE_FMT_S16P, GAVL_SAMPLE_S16,    1 },    ///< signed 16 bits
    { AV_SAMPLE_FMT_S32P, GAVL_SAMPLE_S32,    1 },    ///< signed 32 bits
    { AV_SAMPLE_FMT_FLTP, GAVL_SAMPLE_FLOAT,  1 },  ///< float
    { AV_SAMPLE_FMT_DBLP, GAVL_SAMPLE_DOUBLE, 1 }, ///< double
  };

static gavl_sample_format_t
sample_format_ffmpeg_2_gavl(enum SampleFormat p, int * planar)
  {
  int i;
  for(i = 0; i < sizeof(sampleformats)/sizeof(sampleformats[0]); i++)
    {
    if(sampleformats[i].ffmpeg_fmt == p)
      {
      *planar = sampleformats[i].planar;
      return sampleformats[i].gavl_fmt;
      }
    }
  return GAVL_SAMPLE_NONE;
  }


/* Map of ffmpeg codecs to fourccs (from ffmpeg's avienc.c) */

typedef struct
  {
  const char * decoder_name;
  const char * format_name;
  enum AVCodecID ffmpeg_id;
  uint32_t * fourccs;
  int codec_tag;
  int preroll;
  } codec_info_t;

typedef struct
  {
  AVCodecContext * ctx;
  codec_info_t * info;
  
  gavl_audio_frame_t * frame;
  
  /* ffmpeg changes the extradata sometimes,
     so we save them locally here */
  uint8_t * ext_data;

  AVPacket pkt;
  int sample_size;

  AVFrame * f;
  
  } ffmpeg_audio_priv;

static codec_info_t * lookup_codec(bgav_stream_t * s);

static int init_format(bgav_stream_t * s)
  {
  ffmpeg_audio_priv * priv;
  int planar = 0;

  priv= s->decoder_priv;

  /* These might be set from the codec or the container */
  
  s->data.audio.format->num_channels = priv->ctx->ch_layout.nb_channels;
  s->data.audio.format->samplerate   = priv->ctx->sample_rate;

  if(s->data.audio.format->samplerate == 2 * s->timescale)
    {
    gavl_log(GAVL_LOG_INFO, LOG_DOMAIN, "Detected SBR");
    s->ci.flags |= GAVL_COMPRESSION_SBR;
    }
  
  /* These come from the codec */
  
  s->data.audio.format->sample_format =
    sample_format_ffmpeg_2_gavl(priv->ctx->sample_fmt, &planar);

  if(planar)
    s->data.audio.format->interleave_mode = GAVL_INTERLEAVE_NONE;
  else
    s->data.audio.format->interleave_mode = GAVL_INTERLEAVE_ALL;
  
  /* If we got no sample format, initialization went wrong */
  if(s->data.audio.format->sample_format == GAVL_SAMPLE_NONE)
    {
    gavl_log(GAVL_LOG_ERROR, LOG_DOMAIN,
             "Could not get sample format (maybe codec init failed)");
    return 0;
    }
  priv->sample_size =
    gavl_bytes_per_sample(s->data.audio.format->sample_format);
  
  gavl_set_channel_setup(s->data.audio.format);

  

  //  fprintf(stderr, "Got format\n");
  return 1;
  }


/*
 *  Decode one frame
 */

static gavl_source_status_t decode_frame_ffmpeg(bgav_stream_t * s)
  {
  ffmpeg_audio_priv * priv;
  gavl_source_status_t st;
  int result;
  
  priv= s->decoder_priv;
  
  while(1)
    {
    result = avcodec_receive_frame(priv->ctx, priv->f);

    if(!result)
      break; // Got frame
    
    if(result == AVERROR(EAGAIN))
      {
      /* Get data */
      
      bgav_packet_t * p = NULL;
      
      /* Get packet */
      if((st = bgav_stream_get_packet_read(s, &p)) != GAVL_SOURCE_OK)
        {
        /* Flush */
        priv->pkt.data = NULL;
        priv->pkt.size = 0;
        }
      else
        {
        priv->pkt.data = p->data;
        priv->pkt.size = p->data_size;
        }
#ifdef DUMP_PACKET
      if(p)
        {
        bgav_dprintf("Got packet\n");
        bgav_packet_dump(p);
        gavl_hexdump(p->data, 16, 16);
        }
#endif
      avcodec_send_packet(priv->ctx, &priv->pkt);

      if(p)
        bgav_stream_done_packet_read(s, p);
      }
    else
      return GAVL_SOURCE_EOF;
    }
  
  if(!result && priv->f->nb_samples)
    {
    /* Detect if we need the format */
    if(!priv->sample_size && !init_format(s))
      {
      gavl_log(GAVL_LOG_ERROR, LOG_DOMAIN, "Init format failed");
      return GAVL_SOURCE_EOF;
      }
    
    /* Allocate frame */
    
    if(!priv->frame)
      priv->frame = gavl_audio_frame_create(NULL);
    
    /* This will break with planar formats */
    if(s->data.audio.format->interleave_mode == GAVL_INTERLEAVE_ALL)
      priv->frame->samples.u_8 = priv->f->extended_data[0];
    else
      {
      int i;
      for(i = 0; i < s->data.audio.format->num_channels; i++)
        {
        priv->frame->channels.u_8[i] = priv->f->extended_data[i];
        }
      
      //      fprintf(stderr, "Got frame %p %p\n",
      //              priv->frame->channels.u_8[0], priv->frame->channels.u_8[1]);
      
      }   
    
    if(!s->data.audio.format->samples_per_frame)
      {
      // fprintf(stderr, "num_samples: %d, frame_size: %d\n",
      //         f.nb_samples, priv->ctx->frame_size);
      s->data.audio.format->samples_per_frame = priv->f->nb_samples;
      }

    priv->frame->valid_samples = priv->f->nb_samples;
    }
  
#ifdef DUMP_DECODE
  bgav_dprintf("Got %d samples\n", priv->frame->valid_samples);
#endif

  s->flags |= STREAM_HAVE_FRAME;
  
  gavl_audio_frame_copy_ptrs(s->data.audio.format,
                             s->data.audio.frame, priv->frame);
  
  return GAVL_SOURCE_OK;
  }

static int init_ffmpeg_audio(bgav_stream_t * s)
  {
  const AVCodec * codec;
  ffmpeg_audio_priv * priv;
  priv = calloc(1, sizeof(*priv));
  priv->info = lookup_codec(s);
  codec = avcodec_find_decoder(priv->info->ffmpeg_id);
  priv->f = av_frame_alloc();
  
#if LIBAVCODEC_VERSION_INT < ((53<<16)|(8<<8)|0)
  priv->ctx = avcodec_alloc_context();
#else
  priv->ctx = avcodec_alloc_context3(NULL);
#endif

  /* We never know what weird frame sizes we'll get */
  s->src_flags |= GAVL_SOURCE_SRC_FRAMESIZE_MAX;
  
  if(s->ci.global_header_len)
    {
    priv->ext_data = calloc(1, s->ci.global_header_len +
                            AV_INPUT_BUFFER_PADDING_SIZE);
    memcpy(priv->ext_data, s->ci.global_header, s->ci.global_header_len);
    
    priv->ctx->extradata = priv->ext_data;
    priv->ctx->extradata_size = s->ci.global_header_len;
    }
  
#ifdef DUMP_EXTRADATA
  bgav_dprintf("Adding extradata %d bytes\n", priv->ctx->extradata_size);
  gavl_hexdump(priv->ctx->extradata, priv->ctx->extradata_size, 16);
#endif    
  //JMZ:priv->ctx->channels        = s->data.audio.format->num_channels;
  priv->ctx->ch_layout.order              = AV_CHANNEL_ORDER_UNSPEC;
  priv->ctx->ch_layout.nb_channels        = s->data.audio.format->num_channels;
  priv->ctx->sample_rate     = s->data.audio.format->samplerate;
  priv->ctx->block_align     = s->data.audio.block_align;
  priv->ctx->bit_rate        = s->codec_bitrate;
  priv->ctx->bits_per_coded_sample = s->data.audio.bits_per_sample;
  if(priv->info->codec_tag != -1)
    priv->ctx->codec_tag = priv->info->codec_tag;
  else
    priv->ctx->codec_tag = bswap_32(s->fourcc);

  priv->ctx->codec_type  = codec->type;
  priv->ctx->codec_id    = codec->id;
  
  /* Some codecs need extra stuff */
    
  /* Open codec */

  bgav_ffmpeg_lock();
  
#if LIBAVCODEC_VERSION_INT < ((53<<16)|(8<<8)|0)
  if(avcodec_open(priv->ctx, codec) != 0)
    {
    bgav_ffmpeg_unlock();
    gavl_log(GAVL_LOG_ERROR, LOG_DOMAIN,
             "avcodec_open failed");
    return 0;
    }
#else
  if(avcodec_open2(priv->ctx, codec, NULL) != 0)
    {
    bgav_ffmpeg_unlock();
    gavl_log(GAVL_LOG_ERROR, LOG_DOMAIN,
             "avcodec_open2 failed");
    return 0;
    }
#endif
  
  bgav_ffmpeg_unlock();
  
  s->decoder_priv = priv;

  /* Set missing format values */
  
  s->data.audio.format->interleave_mode = GAVL_INTERLEAVE_ALL;
  s->data.audio.preroll = priv->info->preroll;

  //  /* Check if we know the format already */
  //  if(s->data.audio.format->num_channels &&
  //     s->data.audio.format->samplerate &&
  //     (priv->ctx->sample_fmt != SAMPLE_FMT_NONE))
  //    {
  //    if(!init_format(s))
  //      return 0;
  //    }
  //  else /* Let ffmpeg find out the format */
  //    {
    if(!decode_frame_ffmpeg(s))
      return 0;
  //    }
    
  gavl_dictionary_set_string(s->m, GAVL_META_FORMAT,
                    priv->info->format_name);
  return 1;
  }

static void resync_ffmpeg(bgav_stream_t * s)
  {
  ffmpeg_audio_priv * priv;
  priv = s->decoder_priv;
  avcodec_flush_buffers(priv->ctx);
  if(priv->frame)
    priv->frame->valid_samples = 0;
  }

static void close_ffmpeg(bgav_stream_t * s)
  {
  ffmpeg_audio_priv * priv;
  priv= s->decoder_priv;

  if(!priv)
    return;
  if(priv->ext_data)
    free(priv->ext_data);
  
  if(priv->frame)
    {
    gavl_audio_frame_null(priv->frame);
    gavl_audio_frame_destroy(priv->frame);
    }
  if(priv->ctx)
    {
    bgav_ffmpeg_lock();
    avcodec_close(priv->ctx);
    bgav_ffmpeg_unlock();
    free(priv->ctx);
    }
  av_frame_unref(priv->f);
  av_frame_free(&priv->f);
  free(priv);
  }



static codec_info_t codec_infos[] =
  {
    /*     AV_CODEC_ID_PCM_S16LE= 0x10000, */
    /*     AV_CODEC_ID_PCM_S16BE, */
    /*     AV_CODEC_ID_PCM_U16LE, */
    /*     AV_CODEC_ID_PCM_U16BE, */
    /*     AV_CODEC_ID_PCM_S8, */
    /*     AV_CODEC_ID_PCM_U8, */
    /*     AV_CODEC_ID_PCM_MULAW, */
    /*     AV_CODEC_ID_PCM_ALAW, */
    /*     AV_CODEC_ID_PCM_S32LE, */
    /*     AV_CODEC_ID_PCM_S32BE, */
    /*     AV_CODEC_ID_PCM_U32LE, */
    /*     AV_CODEC_ID_PCM_U32BE, */
    /*     AV_CODEC_ID_PCM_S24LE, */
    /*     AV_CODEC_ID_PCM_S24BE, */
    /*     AV_CODEC_ID_PCM_U24LE, */
    /*     AV_CODEC_ID_PCM_U24BE, */
    /*     AV_CODEC_ID_PCM_S24DAUD, */
    { "FFmpeg D-Cinema decoder", "D-Cinema", AV_CODEC_ID_PCM_S24DAUD,
      (uint32_t[]){ BGAV_MK_FOURCC('d','a','u','d'),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_PCM_ZORK, */

    /*     AV_CODEC_ID_ADPCM_IMA_QT= 0x11000, */
    { "FFmpeg ima4 decoder", "ima4", AV_CODEC_ID_ADPCM_IMA_QT,
      (uint32_t[]){ BGAV_MK_FOURCC('i', 'm', 'a', '4'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_IMA_WAV, */

    { "FFmpeg WAV ADPCM decoder", "WAV IMA ADPCM", AV_CODEC_ID_ADPCM_IMA_WAV,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x11),
                    BGAV_MK_FOURCC('m', 's', 0x00, 0x11), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_IMA_DK3, */
    { "FFmpeg IMA DK3 decoder", "IMA DK3", AV_CODEC_ID_ADPCM_IMA_DK3,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x62), 0x00 },
      -1 },  /* rogue format number */
    /*     AV_CODEC_ID_ADPCM_IMA_DK4, */
    { "FFmpeg IMA DK4 decoder", "IMA DK4", AV_CODEC_ID_ADPCM_IMA_DK4,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x61), 0x00 },
      -1 },  /* rogue format number */
    /*     AV_CODEC_ID_ADPCM_IMA_WS, */
    { "FFmpeg Westwood ADPCM decoder", "Westwood ADPCM", AV_CODEC_ID_ADPCM_IMA_WS,
      (uint32_t[]){ BGAV_MK_FOURCC('w','s','p','c'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_IMA_SMJPEG, */
    { "FFmpeg SMJPEG audio decoder", "SMJPEG audio", AV_CODEC_ID_ADPCM_IMA_SMJPEG,
      (uint32_t[]){ BGAV_MK_FOURCC('S','M','J','A'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_MS, */
    { "FFmpeg MS ADPCM decoder", "MS ADPCM", AV_CODEC_ID_ADPCM_MS,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x02),
                    BGAV_MK_FOURCC('m', 's', 0x00, 0x02), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_4XM, */
    { "FFmpeg 4xm audio decoder", "4XM ADPCM", AV_CODEC_ID_ADPCM_4XM,
      (uint32_t[]){ BGAV_MK_FOURCC('4', 'X', 'M', 'A'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_XA, */
    { "FFmpeg Playstation ADPCM decoder", "Playstation ADPCM", AV_CODEC_ID_ADPCM_XA,
      (uint32_t[]){ BGAV_MK_FOURCC('A','D','X','A'),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_ADX, */
    
    /*     AV_CODEC_ID_ADPCM_EA, */
    { "FFmpeg Electronicarts ADPCM decoder", "Electronicarts ADPCM",
      AV_CODEC_ID_ADPCM_EA,
      (uint32_t[]){ BGAV_MK_FOURCC('w','v','e','a'),
                    0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_G726, */
    { "FFmpeg G726 decoder", "G726 ADPCM", AV_CODEC_ID_ADPCM_G726,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x0045),
                    0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_CT, */
    { "FFmpeg Creative ADPCM decoder", "Creative ADPCM", AV_CODEC_ID_ADPCM_CT,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x200),
                    0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_SWF, */
#if 1 // Sounds disgusting (with ffplay as well). zelda.flv
    { "FFmpeg Flash ADPCM decoder", "Flash ADPCM", AV_CODEC_ID_ADPCM_SWF,
      (uint32_t[]){ BGAV_MK_FOURCC('F', 'L', 'A', '1'), 0x00 },
      -1 },
#endif
    /*     AV_CODEC_ID_ADPCM_YAMAHA, */
    { "FFmpeg SMAF audio decoder", "SMAF", AV_CODEC_ID_ADPCM_YAMAHA,
      (uint32_t[]){ BGAV_MK_FOURCC('S', 'M', 'A', 'F'),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_SBPRO_4, */
    { "FFmpeg Soundblaster Pro ADPCM 4 decoder", "Soundblaster Pro ADPCM 4",
      AV_CODEC_ID_ADPCM_SBPRO_4,
      (uint32_t[]){ BGAV_MK_FOURCC('S', 'B', 'P', '4'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_SBPRO_3, */
    { "FFmpeg Soundblaster Pro ADPCM 3 decoder", "Soundblaster Pro ADPCM 3",
      AV_CODEC_ID_ADPCM_SBPRO_3,
      (uint32_t[]){ BGAV_MK_FOURCC('S', 'B', 'P', '3'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_SBPRO_2, */
    { "FFmpeg Soundblaster Pro ADPCM 2 decoder", "Soundblaster Pro ADPCM 2",
      AV_CODEC_ID_ADPCM_SBPRO_2,
      (uint32_t[]){ BGAV_MK_FOURCC('S', 'B', 'P', '2'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_ADPCM_THP, */
    { "FFmpeg THP Audio decoder", "THP Audio", AV_CODEC_ID_ADPCM_THP,
      (uint32_t[]){ BGAV_MK_FOURCC('T', 'H', 'P', 'A'),
               0x00 } },
    /*     AV_CODEC_ID_ADPCM_IMA_AMV, */
    /*     AV_CODEC_ID_ADPCM_EA_R1, */
    /*     AV_CODEC_ID_ADPCM_EA_R3, */
    /*     AV_CODEC_ID_ADPCM_EA_R2, */
    /*     AV_CODEC_ID_ADPCM_IMA_EA_SEAD, */
    /*     AV_CODEC_ID_ADPCM_IMA_EA_EACS, */
    /*     AV_CODEC_ID_ADPCM_EA_XAS, */
    /*     AV_CODEC_ID_AMR_NB= 0x12000, */
    /*     AV_CODEC_ID_AMR_WB, */
    /*     AV_CODEC_ID_RA_144= 0x13000, */
    { "FFmpeg ra14.4 decoder", "Real audio 14.4", AV_CODEC_ID_RA_144,
      (uint32_t[]){ BGAV_MK_FOURCC('1', '4', '_', '4'),
               BGAV_MK_FOURCC('l', 'p', 'c', 'J'),
                    0x00 },
      -1 },
    /*     AV_CODEC_ID_RA_288, */
    { "FFmpeg ra28.8 decoder", "Real audio 28.8", AV_CODEC_ID_RA_288,
      (uint32_t[]){ BGAV_MK_FOURCC('2', '8', '_', '8'), 0x00 },
      -1 },

    /*     AV_CODEC_ID_ROQ_DPCM= 0x14000, */
    { "FFmpeg ID Roq Audio decoder", "ID Roq Audio", AV_CODEC_ID_ROQ_DPCM,
      (uint32_t[]){ BGAV_MK_FOURCC('R','O','Q','A'),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_INTERPLAY_DPCM, */
    { "FFmpeg Interplay DPCM decoder", "Interplay DPCM", AV_CODEC_ID_INTERPLAY_DPCM,
      (uint32_t[]){ BGAV_MK_FOURCC('I','P','D','C'),
               0x00 },
      1 },
    
    /*     AV_CODEC_ID_XAN_DPCM, */
    /*     AV_CODEC_ID_SOL_DPCM, */
    { "FFmpeg Old SOL decoder", "SOL (old)", AV_CODEC_ID_SOL_DPCM,
      (uint32_t[]){ BGAV_MK_FOURCC('S','O','L','1'),
               0x00 },
      1 },

    { "FFmpeg SOL decoder (8 bit)", "SOL 8 bit", AV_CODEC_ID_SOL_DPCM,
      (uint32_t[]){ BGAV_MK_FOURCC('S','O','L','2'),
               0x00 },
      2 },

    { "FFmpeg SOL decoder (16 bit)", "SOL 16 bit", AV_CODEC_ID_SOL_DPCM,
      (uint32_t[]){ BGAV_MK_FOURCC('S','O','L','3'),
                    0x00 },
      3 },

    /*     AV_CODEC_ID_MP2= 0x15000, */
#if 0
    { "FFmpeg mp2 decoder", "MPEG audio Layer 1/2/3", AV_CODEC_ID_MP2,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x50), 0x00 },
      -1 },
#endif
    /*     AV_CODEC_ID_MP3, /\* preferred ID for decoding MPEG audio layer 1, 2 or 3 *\/ */
#if 1
    { "FFmpeg mp3 decoder", "MPEG audio Layer 1/2/3", AV_CODEC_ID_MP3,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x55),
               BGAV_MK_FOURCC('.', 'm', 'p', '3'),
               BGAV_MK_FOURCC('m', 's', 0x00, 0x55),
               0x00 },
      -1 },
    
#endif
    /*     AV_CODEC_ID_AAC, */
    { "FFmpeg aac decoder", "AAC", AV_CODEC_ID_AAC,
      (uint32_t[]){ BGAV_MK_FOURCC('m','p','4','a'),
                    BGAV_MK_FOURCC('A','D','T','S'),
                    BGAV_MK_FOURCC('A','D','I','F'),
                    BGAV_MK_FOURCC('a','a','c',' '),
                    BGAV_MK_FOURCC('A','A','C',' '),
                    BGAV_MK_FOURCC('A','A','C','P'),
                    BGAV_MK_FOURCC('r','a','a','c'),
                    BGAV_MK_FOURCC('r','a','c','p'),
                    BGAV_WAVID_2_FOURCC(0x00ff),
                    BGAV_WAVID_2_FOURCC(0x706d),
                    0x0 },
      -1 },
    /*     AV_CODEC_ID_AC3, */
#if 0    
    { "FFmpeg ac3 decoder", "AC3", AV_CODEC_ID_AC3,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x2000),
                    BGAV_MK_FOURCC('.', 'a', 'c', '3'),
                    0x00 },
      -1 },
#endif
    /*     AV_CODEC_ID_DTS, */
    /*     AV_CODEC_ID_VORBIS, */
    /*     AV_CODEC_ID_DVAUDIO, */
    /*     AV_CODEC_ID_WMAV1, */
    { "FFmpeg WMA1 decoder", "Window Media Audio 1", AV_CODEC_ID_WMAV1,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x160), 0x00 },
      -1 },
    /*     AV_CODEC_ID_WMAV2, */
    { "FFmpeg WMA2 decoder", "Window Media Audio 2", AV_CODEC_ID_WMAV2,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x161), 0x00 },
      -1 },
    /*     AV_CODEC_ID_WMAV2, */
    { "FFmpeg WMA voice decoder", "Window Media Voice", AV_CODEC_ID_WMAVOICE,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x000A), 0x00 },
      -1 },

    
    /*     AV_CODEC_ID_MACE3, */
    { "FFmpeg MACE3 decoder", "Apple MACE 3", AV_CODEC_ID_MACE3,
      (uint32_t[]){ BGAV_MK_FOURCC('M', 'A', 'C', '3'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_MACE6, */
    { "FFmpeg MACE6 decoder", "Apple MACE 6", AV_CODEC_ID_MACE6,
      (uint32_t[]){ BGAV_MK_FOURCC('M', 'A', 'C', '6'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_VMDAUDIO, */
    { "FFmpeg Sierra VMD audio decoder", "Sierra VMD audio",
      AV_CODEC_ID_VMDAUDIO,
      (uint32_t[]){ BGAV_MK_FOURCC('V', 'M', 'D', 'A'),
                    0x00 } },
#if LIBAVCODEC_VERSION_MAJOR == 53
    /*     AV_CODEC_ID_SONIC, */
    { "FFmpeg Sonic decoder", "Sonic", AV_CODEC_ID_SONIC,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x2048), 0x00 },
      -1 },
    /*     AV_CODEC_ID_SONIC_LS, */
#endif
    /*     AV_CODEC_ID_FLAC, */
    /*     AV_CODEC_ID_MP3ADU, */
#if 1 // Sounds disgusting
    { "FFmpeg mp3 ADU decoder", "MP3 ADU", AV_CODEC_ID_MP3ADU,
      (uint32_t[]){ BGAV_MK_FOURCC('r', 'm', 'p', '3'),
                    0x00 },
      -1 },
#endif
    /*     AV_CODEC_ID_MP3ON4, */
    { "FFmpeg mp3on4 decoder", "MP3on4", AV_CODEC_ID_MP3ON4,
      (uint32_t[]){ BGAV_MK_FOURCC('m', '4', 'a', 29),
                    0x00 },
      -1, 1152*32 },
    /*     AV_CODEC_ID_SHORTEN, */
    { "FFmpeg Shorten decoder", "Shorten", AV_CODEC_ID_SHORTEN,
      (uint32_t[]){ BGAV_MK_FOURCC('.','s','h','n'),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_ALAC, */
    { "FFmpeg alac decoder", "alac", AV_CODEC_ID_ALAC,
      (uint32_t[]){ BGAV_MK_FOURCC('a', 'l', 'a', 'c'),
                    0x00 },
      -1 },
    /*     AV_CODEC_ID_WESTWOOD_SND1, */
    { "FFmpeg Westwood SND1 decoder", "Westwood SND1", AV_CODEC_ID_WESTWOOD_SND1,
      (uint32_t[]){ BGAV_MK_FOURCC('w','s','p','1'), 0x00 },
      -1 },
    /*     AV_CODEC_ID_GSM, /\* as in Berlin toast format *\/ */
    /*     AV_CODEC_ID_QDM2, */
    /*     AV_CODEC_ID_COOK, */
    { "FFmpeg Real cook decoder", "Real cook", AV_CODEC_ID_COOK,
      (uint32_t[]){ BGAV_MK_FOURCC('c', 'o', 'o', 'k'),
                    0x00 },
      -1 },
    /*     AV_CODEC_ID_TRUESPEECH, */
    { "FFmpeg Truespeech audio decoder", "Truespeech", AV_CODEC_ID_TRUESPEECH,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x0022),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_TTA, */
    { "FFmpeg True audio decoder", "True audio", AV_CODEC_ID_TTA,
      (uint32_t[]){ BGAV_MK_FOURCC('T', 'T', 'A', '1'),
                    0x00 },
      -1 },
    /*     AV_CODEC_ID_SMACKAUDIO, */
    { "FFmpeg Smacker Audio decoder", "Smacker Audio", AV_CODEC_ID_SMACKAUDIO,
      (uint32_t[]){ BGAV_MK_FOURCC('S','M','K','A'),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_QCELP, */
    /*     AV_CODEC_ID_WAVPACK, */
    { "FFmpeg Wavpack decoder", "Wavpack", AV_CODEC_ID_WAVPACK,
      (uint32_t[]){ BGAV_MK_FOURCC('w', 'v', 'p', 'k'),
                    0x00 },
      -1 },
    /*     AV_CODEC_ID_DSICINAUDIO, */
    { "FFmpeg Delphine CIN audio decoder", "Delphine CIN Audio",
      AV_CODEC_ID_DSICINAUDIO,
      (uint32_t[]){ BGAV_MK_FOURCC('d', 'c', 'i', 'n'),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_IMC, */
    { "FFmpeg Intel Music decoder", "Intel Music coder", AV_CODEC_ID_IMC,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x0401),
               0x00 },
      -1 },
    /*     AV_CODEC_ID_MUSEPACK7, */
    /*     AV_CODEC_ID_MLP, */
    /*     AV_CODEC_ID_GSM_MS, /\* as found in WAV *\/ */
    /*     AV_CODEC_ID_ATRAC3, */
    { "FFmpeg ATRAC3 decoder", "ATRAC3", AV_CODEC_ID_ATRAC3,
      (uint32_t[]){ BGAV_MK_FOURCC('a', 't', 'r', 'c'),
                    BGAV_WAVID_2_FOURCC(0x0270),
                    0x00  } },
    /*     AV_CODEC_ID_VOXWARE, */
    /*     AV_CODEC_ID_APE, */
    { "FFmpeg Monkey's Audio decoder", "Monkey's Audio", AV_CODEC_ID_APE,
      (uint32_t[]){ BGAV_MK_FOURCC('.', 'a', 'p', 'e'),
                    0x00  } },
    /*     AV_CODEC_ID_NELLYMOSER, */
    { "FFmpeg Nellymoser decoder", "Nellymoser", AV_CODEC_ID_NELLYMOSER,
      (uint32_t[]){ BGAV_MK_FOURCC('N', 'E', 'L', 'L'),
                    0x00 },
      -1 },
    
#if LIBAVCODEC_BUILD >= ((52<<16)+(55<<8)+0)
    { "FFmpeg AMR NB decoder", "AMR Narrowband", AV_CODEC_ID_AMR_NB,
      (uint32_t[]){ BGAV_MK_FOURCC('s', 'a', 'm', 'r'),
                    0x00 },
      -1 },
#endif

    
#if LIBAVCODEC_BUILD >= ((52<<16)+(40<<8)+0)
    { "FFmpeg MPEG-4 ALS decoder", "MPEG-4 ALS", AV_CODEC_ID_MP4ALS,
      (uint32_t[]){ BGAV_MK_FOURCC('m', 'a', 'l', 's'),
                    0x00 },
      -1 },
#endif

    { "FFmpeg MLP decoder", "MLP", AV_CODEC_ID_MLP,
      (uint32_t[]){ BGAV_MK_FOURCC('.', 'm', 'l', 'p'),
                    0x00 },
      -1 },

#if 0 // Experimental    
    { "FFmpeg WMA lossless decoder", "WMA lossless", AV_CODEC_ID_WMALOSSLESS,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x0163),
                    0x00 },
      -1 },
#endif
    { "FFmpeg WMA pro decoder", "WMA Pro", AV_CODEC_ID_WMAPRO,
      (uint32_t[]){ BGAV_WAVID_2_FOURCC(0x0162),
                    0x00 },
      -1 },
    
    /*     AV_CODEC_ID_MUSEPACK8, */
  };


#define NUM_CODECS sizeof(codec_infos)/sizeof(codec_infos[0])

static int real_num_codecs;

static struct
  {
  codec_info_t * info;
  bgav_audio_decoder_t decoder;
  } codecs[NUM_CODECS];


static codec_info_t * lookup_codec(bgav_stream_t * s)
  {
  int i;
  
  for(i = 0; i < real_num_codecs; i++)
    {
    if(s->data.audio.decoder == &codecs[i].decoder)
      return codecs[i].info;
    }
  return NULL;
  }

void
bgav_init_audio_decoders_ffmpeg(bgav_options_t * opt)
  {
  int i;
  real_num_codecs = 0;
#if LIBAVCODEC_VERSION_MAJOR < 54
  avcodec_init();
#endif

  for(i = 0; i < NUM_CODECS; i++)
    {
    if(avcodec_find_decoder(codec_infos[i].ffmpeg_id))
      {
      codecs[real_num_codecs].info = &codec_infos[i];
      codecs[real_num_codecs].decoder.name =
        codecs[real_num_codecs].info->decoder_name;
      codecs[real_num_codecs].decoder.fourccs =
        codecs[real_num_codecs].info->fourccs;
      codecs[real_num_codecs].decoder.init = init_ffmpeg_audio;
      codecs[real_num_codecs].decoder.decode_frame = decode_frame_ffmpeg;
      codecs[real_num_codecs].decoder.close = close_ffmpeg;
      codecs[real_num_codecs].decoder.resync = resync_ffmpeg;
      bgav_audio_decoder_register(&codecs[real_num_codecs].decoder);
      
      real_num_codecs++;
      }
    else
      gavl_log(GAVL_LOG_WARNING, LOG_DOMAIN, "Codec not found: %s",
               codec_infos[i].decoder_name);
    }
  }