/src/gpac/src/odf/descriptors.c

Source
/*
 *      GPAC - Multimedia Framework C SDK
 *
 *      Authors: Jean Le Feuvre
 *      Copyright (c) Telecom ParisTech 2000-2025
 *          All rights reserved
 *
 *  This file is part of GPAC / MPEG-4 ObjectDescriptor sub-project
 *
 *  GPAC 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, or (at your option)
 *  any later version.
 *
 *  GPAC 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; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <gpac/internal/odf_dev.h>
#include <gpac/constants.h>

#include <gpac/avparse.h>
#include <gpac/internal/media_dev.h>

s32 gf_odf_size_field_size(u32 size_desc)
{
  if (size_desc < 0x00000080) {
    return 1 + 1;
  } else if (size_desc < 0x00004000) {
    return 2 + 1;
  } else if (size_desc < 0x00200000) {
    return 3 + 1;
  } else if (size_desc < 0x10000000) {
    return 4 + 1;
  } else {
    return -1;
  }

}


GF_EXPORT
GF_Err gf_odf_parse_descriptor(GF_BitStream *bs, GF_Descriptor **desc, u32 *desc_size)
{
  u32 val, size, sizeHeader;
  u8 tag;
  GF_Err err;
  GF_Descriptor *newDesc;
  if (!bs) return GF_BAD_PARAM;

  *desc_size = 0;

  //tag
  tag = (u8) gf_bs_read_int(bs, 8);
  sizeHeader = 1;

  //size
  size = 0;
  do {
    val = gf_bs_read_int(bs, 8);
    sizeHeader++;
    if (sizeHeader > 5) {
      GF_LOG(GF_LOG_ERROR, GF_LOG_CODEC, ("[ODF] Descriptor size on more than 4 bytes\n"));
      return GF_ODF_INVALID_DESCRIPTOR;
    }
    size <<= 7;
    size |= val & 0x7F;
  } while ( val & 0x80);
  *desc_size = size;

  if (gf_bs_available(bs) < size) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_CODEC, ("[ODF] Not enough bytes (%d) to read descriptor (size=%d)\n", gf_bs_available(bs), size));
    return GF_ODF_INVALID_DESCRIPTOR;
  }

  GF_LOG(GF_LOG_DEBUG, GF_LOG_CODEC, ("[ODF] Reading descriptor (tag %d size %d)\n", tag, size ));

  newDesc = gf_odf_create_descriptor(tag);
  if (! newDesc) {
    *desc = NULL;
    *desc_size = sizeHeader;
    if ( (tag >= GF_ODF_ISO_RES_BEGIN_TAG) &&
            (tag <= GF_ODF_ISO_RES_END_TAG) ) {
      return GF_ODF_FORBIDDEN_DESCRIPTOR;
    }
    else if (!tag || (tag == 0xFF)) {
      return GF_ODF_INVALID_DESCRIPTOR;
    }
#ifndef GPAC_MINIMAL_ODF
    return GF_OUT_OF_MEM;
#else
    gf_bs_skip_bytes(bs, size);
    *desc_size = size + sizeHeader - gf_odf_size_field_size(*desc_size);
    return GF_OK;
#endif
  }

  newDesc->tag = tag;
  err = gf_odf_read_descriptor(bs, newDesc, *desc_size);

  /*FFmpeg fix*/
  if ((tag==GF_ODF_SLC_TAG) && (((GF_SLConfig*)newDesc)->predefined==2)) {
    if (*desc_size==3) {
      *desc_size = 1;
      err = GF_OK;
    }
  }

  //little trick to handle lazy bitstreams that encode
  //SizeOfInstance on a fix number of bytes
  //This nb of bytes is added in Read methods
  *desc_size += sizeHeader - gf_odf_size_field_size(*desc_size);
  *desc = newDesc;
  if (err) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_CODEC, ("[ODF] Error reading descriptor (tag %d size %d): %s\n", tag, size, gf_error_to_string(err) ));
    gf_odf_delete_descriptor(newDesc);
    *desc = NULL;
  }
  return err;
}



GF_Err gf_odf_delete_descriptor_list(GF_List *descList)
{
  GF_Err e;
  GF_Descriptor*tmp;
  u32 i;
  //no error if NULL chain...
  if (! descList) return GF_OK;
  i=0;
  while ((tmp = (GF_Descriptor*)gf_list_enum(descList, &i))) {
    e = gf_odf_delete_descriptor(tmp);
    if (e) return e;
  }
  gf_list_del(descList);
  return GF_OK;
}

GF_Err gf_odf_write_base_descriptor(GF_BitStream *bs, u8 tag, u32 size)
{
  u32 length;
  unsigned char vals[4];

  if (!tag ) return GF_BAD_PARAM;

  length = size;
  vals[3] = (unsigned char) (length & 0x7f);
  length >>= 7;
  vals[2] = (unsigned char) ((length & 0x7f) | 0x80);
  length >>= 7;
  vals[1] = (unsigned char) ((length & 0x7f) | 0x80);
  length >>= 7;
  vals[0] = (unsigned char) ((length & 0x7f) | 0x80);

  gf_bs_write_int(bs, tag, 8);
  if (size < 0x00000080) {
    gf_bs_write_int(bs, vals[3], 8);
  } else if (size < 0x00004000) {
    gf_bs_write_int(bs, vals[2], 8);
    gf_bs_write_int(bs, vals[3], 8);
  } else if (size < 0x00200000) {
    gf_bs_write_int(bs, vals[1], 8);
    gf_bs_write_int(bs, vals[2], 8);
    gf_bs_write_int(bs, vals[3], 8);
  } else if (size < 0x10000000) {
    gf_bs_write_int(bs, vals[0], 8);
    gf_bs_write_int(bs, vals[1], 8);
    gf_bs_write_int(bs, vals[2], 8);
    gf_bs_write_int(bs, vals[3], 8);
  } else {
    return GF_ODF_INVALID_DESCRIPTOR;
  }
  return GF_OK;
}


GF_Err gf_odf_size_descriptor_list(GF_List *descList, u32 *outSize)
{
  GF_Err e;
  u32 tmpSize, count, i;
  if (! descList) return GF_OK;

  count = gf_list_count(descList);
  for ( i = 0; i < count; i++ ) {
    GF_Descriptor *tmp = (GF_Descriptor*)gf_list_get(descList, i);
    if (tmp) {
      e = gf_odf_size_descriptor(tmp, &tmpSize);
      if (e) return e;
      if (tmpSize) *outSize += tmpSize + gf_odf_size_field_size(tmpSize);
    }
  }
  return GF_OK;
}

GF_Err gf_odf_write_descriptor_list(GF_BitStream *bs, GF_List *descList)
{
  GF_Err e;
  u32 count, i;

  if (! descList) return GF_OK;
  count = gf_list_count(descList);
  for ( i = 0; i < count; i++ ) {
    GF_Descriptor *tmp = (GF_Descriptor*)gf_list_get(descList, i);
    if (tmp) {
      e = gf_odf_write_descriptor(bs, tmp);
      if (e) return e;
    }
  }
  return GF_OK;
}

GF_Err gf_odf_write_descriptor_list_filter(GF_BitStream *bs, GF_List *descList, u8 only_tag)
{
  GF_Err e;
  u32 count, i;

  if (! descList) return GF_OK;
  count = gf_list_count(descList);
  for ( i = 0; i < count; i++ ) {
    GF_Descriptor *tmp = (GF_Descriptor*)gf_list_get(descList, i);
    if (tmp && (tmp->tag==only_tag) ) {
      e = gf_odf_write_descriptor(bs, tmp);
      if (e) return e;
    }
  }
  return GF_OK;
}

#ifndef GPAC_MINIMAL_ODF

u32 gf_ipmpx_array_size(GF_BitStream *bs, u32 *array_size)
{
  u32 val, size, io_size;

  io_size = size = 0;
  do {
    val = gf_bs_read_int(bs, 8);
    io_size ++;
    size <<= 7;
    size |= val & 0x7F;
  } while ( val & 0x80 );
  *array_size = size;
  return io_size;
}

void gf_ipmpx_write_array(GF_BitStream *bs, u8 *data, u32 data_len)
{
  u32 length;
  unsigned char vals[4];

  if (!data || !data_len) return;

  length = data_len;
  vals[3] = (unsigned char) (length & 0x7f);
  length >>= 7;
  vals[2] = (unsigned char) ((length & 0x7f) | 0x80);
  length >>= 7;
  vals[1] = (unsigned char) ((length & 0x7f) | 0x80);
  length >>= 7;
  vals[0] = (unsigned char) ((length & 0x7f) | 0x80);

  if (data_len < 0x00000080) {
    gf_bs_write_int(bs, vals[3], 8);
  } else if (data_len < 0x00004000) {
    gf_bs_write_int(bs, vals[2], 8);
    gf_bs_write_int(bs, vals[3], 8);
  } else if (data_len < 0x00200000) {
    gf_bs_write_int(bs, vals[1], 8);
    gf_bs_write_int(bs, vals[2], 8);
    gf_bs_write_int(bs, vals[3], 8);
  } else if (data_len < 0x10000000) {
    gf_bs_write_int(bs, vals[0], 8);
    gf_bs_write_int(bs, vals[1], 8);
    gf_bs_write_int(bs, vals[2], 8);
    gf_bs_write_int(bs, vals[3], 8);
  } else {
    return;
  }
  gf_bs_write_data(bs, data, data_len);
}


#endif /*GPAC_MINIMAL_ODF*/

/*special authoring functions*/
GF_EXPORT
GF_BIFSConfig *gf_odf_get_bifs_config(GF_DefaultDescriptor *dsi, u32 oti)
{
  Bool hasSize, cmd_stream;
  GF_BitStream *bs;
  GF_BIFSConfig *cfg;

  if (oti>=GF_CODECID_BIFS_EXTENDED) return NULL;

  if (!dsi || !dsi->data || !dsi->dataLength ) {
    /* Hack for T-DMB non compliant streams (OnTimeTek ?) */
    cfg = (GF_BIFSConfig *) gf_odf_desc_new(GF_ODF_BIFS_CFG_TAG);
    cfg->pixelMetrics = GF_TRUE;
    cfg->version = 1;
    return cfg;
  }
  bs = gf_bs_new(dsi->data, dsi->dataLength, GF_BITSTREAM_READ);

  cfg = (GF_BIFSConfig *) gf_odf_desc_new(GF_ODF_BIFS_CFG_TAG);
  if (oti==2) {
    /*3D Mesh Coding*/
    gf_bs_read_int(bs, 1);
    /*PMF*/
    gf_bs_read_int(bs, 1);
  }
  cfg->nodeIDbits = gf_bs_read_int(bs, 5);
  cfg->routeIDbits = gf_bs_read_int(bs, 5);
  if (oti==2) cfg->protoIDbits = gf_bs_read_int(bs, 5);

  cmd_stream = (Bool)gf_bs_read_int(bs, 1);
  if (!cmd_stream) {
    cfg->elementaryMasks = gf_list_new();
    while (1) {
      GF_ElementaryMask* em = (GF_ElementaryMask* ) gf_odf_New_ElemMask();
      em->node_id = gf_bs_read_int(bs, cfg->nodeIDbits);
      gf_list_add(cfg->elementaryMasks, em);
      /*this assumes only FDP, BDP and IFS2D (no elem mask)*/
      if (gf_bs_read_int(bs, 1) == 0) break;
    }
    gf_bs_align(bs);
    if (gf_bs_get_size(bs) != gf_bs_get_position(bs)) {
      GF_LOG(GF_LOG_WARNING, GF_LOG_CODEC, ("[ODF] Reading bifs config: shift in sizes (not supported)\n"));
    }
  } else {
    cfg->pixelMetrics = (Bool)gf_bs_read_int(bs, 1);
    hasSize = (Bool)gf_bs_read_int(bs, 1);
    if (hasSize) {
      cfg->pixelWidth = gf_bs_read_int(bs, 16);
      cfg->pixelHeight = gf_bs_read_int(bs, 16);
    }
    gf_bs_align(bs);
    if (gf_bs_get_size(bs) != gf_bs_get_position(bs))
      GF_LOG(GF_LOG_WARNING, GF_LOG_CODEC, ("[ODF] Reading bifs config: shift in sizes (invalid descriptor)\n"));
  }
  gf_bs_del(bs);
  return cfg;
}

/*special function for authoring - convert DSI to LASERConfig*/
GF_EXPORT
GF_Err gf_odf_get_laser_config(GF_DefaultDescriptor *dsi, GF_LASERConfig *cfg)
{
  u32 to_skip;
  GF_BitStream *bs;

  if (!cfg) return GF_BAD_PARAM;
  memset(cfg, 0, sizeof(GF_LASERConfig));

  if (!dsi || !dsi->data || !dsi->dataLength) return GF_BAD_PARAM;
  bs = gf_bs_new(dsi->data, dsi->dataLength, GF_BITSTREAM_READ);
  memset(cfg, 0, sizeof(GF_LASERConfig));
  cfg->tag = GF_ODF_LASER_CFG_TAG;
  cfg->profile = gf_bs_read_int(bs, 8);
  cfg->level = gf_bs_read_int(bs, 8);
  /*cfg->reserved = */gf_bs_read_int(bs, 3);
  cfg->pointsCodec = gf_bs_read_int(bs, 2);
  cfg->pathComponents = gf_bs_read_int(bs, 4);
  cfg->fullRequestHost = gf_bs_read_int(bs, 1);
  if (gf_bs_read_int(bs, 1)) cfg->time_resolution = gf_bs_read_int(bs, 16);
  else cfg->time_resolution = 1000;
  cfg->colorComponentBits = 1 + gf_bs_read_int(bs, 4);
  cfg->resolution = gf_bs_read_int(bs, 4);
  if (cfg->resolution>7) cfg->resolution -= 16;
  cfg->coord_bits = gf_bs_read_int(bs, 5);
  cfg->scale_bits_minus_coord_bits = gf_bs_read_int(bs, 4);
  cfg->newSceneIndicator = gf_bs_read_int(bs, 1);
  /*reserved2*/ gf_bs_read_int(bs, 3);
  cfg->extensionIDBits = gf_bs_read_int(bs, 4);
  /*hasExtConfig - we just ignore it*/
  if (gf_bs_read_int(bs, 1)) {
    to_skip = gf_bs_read_vluimsbf5(bs);
    while (to_skip) {
      gf_bs_read_int(bs, 8);
      to_skip--;
    }
  }
  /*hasExtension - we just ignore it*/
  if (gf_bs_read_int(bs, 1)) {
    to_skip = gf_bs_read_vluimsbf5(bs);
    while (to_skip) {
      gf_bs_read_int(bs, 8);
      to_skip--;
    }
  }
  gf_bs_del(bs);
  return GF_OK;
}
//unused
#if 0
GF_Err gf_odf_get_ui_config(GF_DefaultDescriptor *dsi, GF_UIConfig *cfg)
{
  u32 len, i;
  GF_BitStream *bs;
  if (!dsi || !dsi->data || !dsi->dataLength || !cfg) return GF_BAD_PARAM;
  memset(cfg, 0, sizeof(GF_UIConfig));
  cfg->tag = GF_ODF_UI_CFG_TAG;
  bs = gf_bs_new(dsi->data, dsi->dataLength, GF_BITSTREAM_READ);
  len = gf_bs_read_int(bs, 8);
  cfg->deviceName = (char*)gf_malloc(sizeof(char) * (len+1));
  for (i=0; i<len; i++) cfg->deviceName[i] = gf_bs_read_int(bs, 8);
  cfg->deviceName[i] = 0;

  if (!stricmp(cfg->deviceName, "StringSensor") && gf_bs_available(bs)) {
    cfg->termChar = gf_bs_read_int(bs, 8);
    cfg->delChar = gf_bs_read_int(bs, 8);
  }
  gf_bs_del(bs);
  return GF_OK;
}
#endif

GF_EXPORT
GF_Err gf_odf_encode_ui_config(GF_UIConfig *cfg, GF_DefaultDescriptor **out_dsi)
{
  u32 i, len;
  GF_BitStream *bs;
  GF_DefaultDescriptor *dsi;
  if (!out_dsi || (cfg->tag != GF_ODF_UI_CFG_TAG)) return GF_BAD_PARAM;

  *out_dsi = NULL;
  if (!cfg->deviceName) return GF_OK;

  bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  len = (u32) strlen(cfg->deviceName);
  gf_bs_write_int(bs, len, 8);
  for (i=0; i<len; i++) gf_bs_write_int(bs, cfg->deviceName[i], 8);
  if (!stricmp(cfg->deviceName, "StringSensor")) {
    /*fixme - this should be UTF-8 chars*/
    if (cfg->delChar || cfg->termChar) {
      gf_bs_write_int(bs, cfg->termChar, 8);
      gf_bs_write_int(bs, cfg->delChar, 8);
    }
  }
  if (cfg->ui_data) gf_bs_write_data(bs, cfg->ui_data, cfg->ui_data_length);

  dsi = (GF_DefaultDescriptor *) gf_odf_desc_new(GF_ODF_DSI_TAG);
  gf_bs_get_content(bs, &dsi->data, &dsi->dataLength);
  gf_bs_del(bs);
  *out_dsi = dsi;
  return GF_OK;
}


GF_EXPORT
GF_AVCConfig *gf_odf_avc_cfg_new()
{
  GF_AVCConfig *cfg;
  GF_SAFEALLOC(cfg, GF_AVCConfig);
  if (!cfg) return NULL;
  cfg->sequenceParameterSets = gf_list_new();
  cfg->pictureParameterSets = gf_list_new();
  cfg->AVCLevelIndication = 1;
  cfg->chroma_format = 1;
  cfg->chroma_bit_depth = 8;
  cfg->luma_bit_depth = 8;
  return cfg;
}

GF_EXPORT
void gf_odf_avc_cfg_del(GF_AVCConfig *cfg)
{
  if (!cfg) return;
  while (gf_list_count(cfg->sequenceParameterSets)) {
    GF_NALUFFParam *sl = (GF_NALUFFParam *)gf_list_get(cfg->sequenceParameterSets, 0);
    gf_list_rem(cfg->sequenceParameterSets, 0);
    if (sl->data) gf_free(sl->data);
    gf_free(sl);
  }
  gf_list_del(cfg->sequenceParameterSets);
  cfg->sequenceParameterSets = NULL;

  while (gf_list_count(cfg->pictureParameterSets)) {
    GF_NALUFFParam *sl = (GF_NALUFFParam *)gf_list_get(cfg->pictureParameterSets, 0);
    gf_list_rem(cfg->pictureParameterSets, 0);
    if (sl->data) gf_free(sl->data);
    gf_free(sl);
  }
  gf_list_del(cfg->pictureParameterSets);
  cfg->pictureParameterSets = NULL;

  if (cfg->sequenceParameterSetExtensions) {
    while (gf_list_count(cfg->sequenceParameterSetExtensions)) {
      GF_NALUFFParam *sl = (GF_NALUFFParam *)gf_list_get(cfg->sequenceParameterSetExtensions, 0);
      gf_list_rem(cfg->sequenceParameterSetExtensions, 0);
      if (sl->data) gf_free(sl->data);
      gf_free(sl);
    }
    gf_list_del(cfg->sequenceParameterSetExtensions);
    cfg->sequenceParameterSetExtensions = NULL;
  }
  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_avc_cfg_write_bs(GF_AVCConfig *cfg, GF_BitStream *bs)
{
  u32 i, count;

  if (!cfg) return GF_BAD_PARAM;

  count = gf_list_count(cfg->sequenceParameterSets);

  if (!cfg->write_annex_b) {
    gf_bs_write_int(bs, cfg->configurationVersion, 8);
    gf_bs_write_int(bs, cfg->AVCProfileIndication , 8);
    gf_bs_write_int(bs, cfg->profile_compatibility, 8);
    gf_bs_write_int(bs, cfg->AVCLevelIndication, 8);
    gf_bs_write_int(bs, 0x3F, 6);
    gf_bs_write_int(bs, cfg->nal_unit_size - 1, 2);
    gf_bs_write_int(bs, 0x7, 3);
    gf_bs_write_int(bs, count, 5);
  }
  for (i=0; i<count; i++) {
    GF_NALUFFParam *sl = (GF_NALUFFParam *)gf_list_get(cfg->sequenceParameterSets, i);
    if (!cfg->write_annex_b) {
      gf_bs_write_u16(bs, sl->size);
    } else {
      gf_bs_write_u32(bs, 1);
    }
    gf_bs_write_data(bs, sl->data, sl->size);
  }
  count = gf_list_count(cfg->pictureParameterSets);
  if (!cfg->write_annex_b) {
    gf_bs_write_int(bs, count, 8);
  }
  for (i=0; i<count; i++) {
    GF_NALUFFParam *sl = (GF_NALUFFParam *)gf_list_get(cfg->pictureParameterSets, i);
    if (!cfg->write_annex_b) {
      gf_bs_write_u16(bs, sl->size);
    } else {
      gf_bs_write_u32(bs, 1);
    }
    gf_bs_write_data(bs, sl->data, sl->size);
  }
  if (gf_avcc_use_extensions(cfg->AVCProfileIndication)) {
    if (!cfg->write_annex_b) {
      gf_bs_write_int(bs, 0xFF, 6);
      gf_bs_write_int(bs, cfg->chroma_format, 2);
      gf_bs_write_int(bs, 0xFF, 5);
      gf_bs_write_int(bs, cfg->luma_bit_depth - 8, 3);
      gf_bs_write_int(bs, 0xFF, 5);
      gf_bs_write_int(bs, cfg->chroma_bit_depth - 8, 3);
    }
    count = cfg->sequenceParameterSetExtensions ? gf_list_count(cfg->sequenceParameterSetExtensions) : 0;
    if (!cfg->write_annex_b) {
      gf_bs_write_u8(bs, count);
    }
    for (i=0; i<count; i++) {
      GF_NALUFFParam *sl = (GF_NALUFFParam *) gf_list_get(cfg->sequenceParameterSetExtensions, i);
      if (!cfg->write_annex_b) {
        gf_bs_write_u16(bs, sl->size);
      } else {
        gf_bs_write_u32(bs, 1);
      }
      gf_bs_write_data(bs, sl->data, sl->size);
    }
  }
  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_avc_cfg_write(GF_AVCConfig *cfg, u8 **outData, u32 *outSize)
{
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  gf_odf_avc_cfg_write_bs(cfg, bs);
  *outSize = 0;
  *outData = NULL;
  gf_bs_get_content(bs, outData, outSize);
  gf_bs_del(bs);
  return GF_OK;
}

GF_EXPORT
GF_AVCConfig *gf_odf_avc_cfg_read(u8 *dsi, u32 dsi_size)
{
  u32 i, count;
  GF_AVCConfig *avcc = gf_odf_avc_cfg_new();
  GF_BitStream *bs = gf_bs_new(dsi, dsi_size, GF_BITSTREAM_READ);
  avcc->configurationVersion = gf_bs_read_int(bs, 8);
  avcc->AVCProfileIndication  = gf_bs_read_int(bs, 8);
  avcc->profile_compatibility = gf_bs_read_int(bs, 8);
  avcc->AVCLevelIndication  = gf_bs_read_int(bs, 8);
  gf_bs_read_int(bs, 6);
  avcc->nal_unit_size = 1 + gf_bs_read_int(bs, 2);
  gf_bs_read_int(bs, 3);
  count = gf_bs_read_int(bs, 5);
  for (i=0; i<count; i++) {
    GF_NALUFFParam *sl;
    u32 size = gf_bs_read_int(bs, 16);
    if ((size>gf_bs_available(bs)) || (size<2)) {
      GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[AVC] Wrong param set size %d\n", size));
      gf_bs_del(bs);
      gf_odf_avc_cfg_del(avcc);
      return NULL;
    }
    GF_SAFEALLOC(sl, GF_NALUFFParam );
    if (!sl) {
      gf_bs_del(bs);
      gf_odf_avc_cfg_del(avcc);
      return NULL;
    }
    sl->size = size;
    sl->data = (char*)gf_malloc(sizeof(char)*sl->size);
    if (!sl->data) {
      gf_bs_del(bs);
      gf_odf_avc_cfg_del(avcc);
      return NULL;
    }
    gf_bs_read_data(bs, sl->data, sl->size);
    gf_list_add(avcc->sequenceParameterSets, sl);
  }
  count = gf_bs_read_int(bs, 8);
  for (i=0; i<count; i++) {
    GF_NALUFFParam *sl;
    u32 size = gf_bs_read_int(bs, 16);
    if ((size>gf_bs_available(bs)) || (size<2)) {
      GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[AVC] Wrong param set size %d\n", size));
      gf_bs_del(bs);
      gf_odf_avc_cfg_del(avcc);
      return NULL;
    }
    GF_SAFEALLOC(sl, GF_NALUFFParam );
    if (!sl) {
      gf_bs_del(bs);
      gf_odf_avc_cfg_del(avcc);
      return NULL;
    }
    sl->size = size;
    sl->data = (char*)gf_malloc(sizeof(char)*sl->size);
    if (!sl->data) {
      gf_bs_del(bs);
      gf_odf_avc_cfg_del(avcc);
      return NULL;
    }
    gf_bs_read_data(bs, sl->data, sl->size);
    gf_list_add(avcc->pictureParameterSets, sl);
  }
  if (gf_avcc_use_extensions(avcc->AVCProfileIndication)) {
    gf_bs_read_int(bs, 6);
    avcc->chroma_format = gf_bs_read_int(bs, 2);
    gf_bs_read_int(bs, 5);
    avcc->luma_bit_depth = 8 + gf_bs_read_int(bs, 3);
    gf_bs_read_int(bs, 5);
    avcc->chroma_bit_depth = 8 + gf_bs_read_int(bs, 3);

    count = gf_bs_read_int(bs, 8);
    if (count) {
      avcc->sequenceParameterSetExtensions = gf_list_new();
      for (i=0; i<count; i++) {
        GF_NALUFFParam *sl;
        u32 size = gf_bs_read_int(bs, 16);
        if ((size>gf_bs_available(bs)) || (size<2)) {
          GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[AVC] Wrong param set size %d\n", size));
          gf_bs_del(bs);
          gf_odf_avc_cfg_del(avcc);
          return NULL;
        }
        GF_SAFEALLOC(sl, GF_NALUFFParam );
        if (!sl) {
          gf_bs_del(bs);
          gf_odf_avc_cfg_del(avcc);
          return NULL;
        }
        sl->size = size;
        sl->data = (char*)gf_malloc(sizeof(char)*sl->size);
        if (!sl->data) {
          gf_bs_del(bs);
          gf_odf_avc_cfg_del(avcc);
          return NULL;
        }
        gf_bs_read_data(bs, sl->data, sl->size);
        gf_list_add(avcc->sequenceParameterSetExtensions, sl);
      }
    }
  }


  gf_bs_del(bs);
  return avcc;
}


GF_Descriptor *gf_odf_new_tx3g()
{
  GF_TextSampleDescriptor *newDesc = (GF_TextSampleDescriptor*) gf_malloc(sizeof(GF_TextSampleDescriptor));
  if (!newDesc) return NULL;
  memset(newDesc, 0, sizeof(GF_TextSampleDescriptor));
  newDesc->tag = GF_ODF_TX3G_TAG;
  return (GF_Descriptor *) newDesc;
}
GF_Err gf_odf_del_tx3g(GF_TextSampleDescriptor *sd)
{
  u32 i;
  for (i=0; i<sd->font_count; i++)
    if (sd->fonts[i].fontName) gf_free(sd->fonts[i].fontName);
  gf_free(sd->fonts);
  gf_free(sd);
  return GF_OK;
}

GF_EXPORT
GF_TextSampleDescriptor *gf_odf_tx3g_read(u8 *dsi, u32 dsi_size)
{
#ifndef GPAC_DISABLE_ISOM
  u32 i;
  u32 gpp_read_rgba(GF_BitStream *bs);
  void gpp_read_style(GF_BitStream *bs, GF_StyleRecord *rec);
  void gpp_read_box(GF_BitStream *bs, GF_BoxRecord *rec);

  GF_TextSampleDescriptor *txtc = (GF_TextSampleDescriptor *) gf_odf_new_tx3g();
  GF_BitStream *bs = gf_bs_new(dsi, dsi_size, GF_BITSTREAM_READ);

  txtc->displayFlags = gf_bs_read_int(bs, 32);
  txtc->horiz_justif = gf_bs_read_int(bs, 8);
  txtc->vert_justif  = gf_bs_read_int(bs, 8);
  txtc->back_color = gpp_read_rgba(bs);
  gpp_read_box(bs, &txtc->default_pos);
  gpp_read_style(bs, &txtc->default_style);
  txtc->font_count = gf_bs_read_u16(bs);
  txtc->fonts = gf_malloc(sizeof(GF_FontRecord)*txtc->font_count);
  for (i=0; i<txtc->font_count; i++) {
    u8 len;
    txtc->fonts[i].fontID = gf_bs_read_u16(bs);
    len = gf_bs_read_u8(bs);
    txtc->fonts[i].fontName = gf_malloc(sizeof(char)*(len+1));
    gf_bs_read_data(bs, txtc->fonts[i].fontName, len);
    txtc->fonts[i].fontName[len] = 0;
  }
  gf_bs_del(bs);
  return txtc;
#else
  return NULL;
#endif
}

GF_Err gf_odf_tx3g_write(GF_TextSampleDescriptor *a, u8 **outData, u32 *outSize)
{
#ifndef GPAC_DISABLE_ISOM
  u32 j;
  void gpp_write_rgba(GF_BitStream *bs, u32 col);
  void gpp_write_box(GF_BitStream *bs, GF_BoxRecord *rec);
  void gpp_write_style(GF_BitStream *bs, GF_StyleRecord *rec);
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);

  gf_bs_write_u32(bs, a->displayFlags);
  gf_bs_write_u8(bs, a->horiz_justif);
  gf_bs_write_u8(bs, a->vert_justif);
  gpp_write_rgba(bs, a->back_color);
  gpp_write_box(bs, &a->default_pos);
  gpp_write_style(bs, &a->default_style);

  gf_bs_write_u16(bs, a->font_count);
  for (j=0; j<a->font_count; j++) {
    gf_bs_write_u16(bs, a->fonts[j].fontID);
    if (a->fonts[j].fontName) {
      u32 len = (u32) strlen(a->fonts[j].fontName);
      gf_bs_write_u8(bs, len);
      gf_bs_write_data(bs, a->fonts[j].fontName, len);
    } else {
      gf_bs_write_u8(bs, 0);
    }
  }
  gf_bs_get_content(bs, outData, outSize);
  gf_bs_del(bs);
  return GF_OK;
#else
  return GF_NOT_SUPPORTED;
#endif
}

/*TextConfig*/
GF_Descriptor *gf_odf_new_text_cfg()
{
  GF_TextConfig *newDesc = (GF_TextConfig*) gf_malloc(sizeof(GF_TextConfig));
  if (!newDesc) return NULL;
  memset(newDesc, 0, sizeof(GF_TextConfig));
  newDesc->tag = GF_ODF_TEXT_CFG_TAG;
  newDesc->sample_descriptions = gf_list_new();
  newDesc->Base3GPPFormat = 0x10;
  newDesc->MPEGExtendedFormat = 0x10;
  newDesc->profileLevel = 0x10;
  newDesc->timescale = 1000;
  return (GF_Descriptor *) newDesc;
}

void ResetTextConfig(GF_TextConfig *desc)
{
  GF_List *bck;
  while (gf_list_count(desc->sample_descriptions)) {
    GF_TextSampleDescriptor *sd = (GF_TextSampleDescriptor *)gf_list_get(desc->sample_descriptions, 0);
    gf_list_rem(desc->sample_descriptions, 0);
    gf_odf_del_tx3g(sd);
  }
  bck = desc->sample_descriptions;
  memset(desc, 0, sizeof(GF_TextConfig));
  desc->tag = GF_ODF_TEXT_CFG_TAG;
  desc->sample_descriptions = bck;
}

GF_Err gf_odf_del_text_cfg(GF_TextConfig *desc)
{
  ResetTextConfig(desc);
  gf_list_del(desc->sample_descriptions);
  gf_free(desc);
  return GF_OK;
}

/*we need box parsing*/
#include <gpac/internal/isomedia_dev.h>
GF_EXPORT
GF_Err gf_odf_get_text_config(u8 *data, u32 data_len, u32 codecid, GF_TextConfig *cfg)
{
  u32 i;
  Bool has_alt_format;
#ifndef GPAC_DISABLE_ISOM
  Bool has_sd;
  u32 j;
#endif
  GF_Err e;
  GF_BitStream *bs;
  if (data || data_len || !cfg) return GF_BAD_PARAM;
  if (codecid != GF_CODECID_TEXT_MPEG4) return GF_NOT_SUPPORTED;

  /*reset*/
  ResetTextConfig(cfg);
  bs = gf_bs_new(data, data_len, GF_BITSTREAM_READ);

  e = GF_OK;
  cfg->Base3GPPFormat = gf_bs_read_int(bs, 8);
  cfg->MPEGExtendedFormat = gf_bs_read_int(bs, 8);
  cfg->profileLevel = gf_bs_read_int(bs, 8);
  cfg->timescale = gf_bs_read_int(bs, 24);
  has_alt_format = (Bool)gf_bs_read_int(bs, 1);
  cfg->sampleDescriptionFlags = gf_bs_read_int(bs, 2);
#ifndef GPAC_DISABLE_ISOM
  has_sd = (Bool)gf_bs_read_int(bs, 1);
#else
  gf_bs_read_int(bs, 1);
#endif
  cfg->has_vid_info = (Bool)gf_bs_read_int(bs, 1);
  gf_bs_read_int(bs, 3);
  cfg->layer = gf_bs_read_int(bs, 8);
  cfg->text_width = gf_bs_read_int(bs, 16);
  cfg->text_height = gf_bs_read_int(bs, 16);
  if (has_alt_format) {
    cfg->nb_compatible_formats = gf_bs_read_int(bs, 8);
    for (i=0; i<cfg->nb_compatible_formats; i++) cfg->compatible_formats[i] = gf_bs_read_int(bs, 8);
  }
#ifndef GPAC_DISABLE_ISOM
  if (has_sd) {
    u8 sample_index;
    GF_TextSampleDescriptor *txdesc;
    GF_Tx3gSampleEntryBox *a;
    s64 avail;
    u32 nb_desc = gf_bs_read_int(bs, 8);

    /*parse TTU[5]s*/
    avail = (s64) gf_bs_available(bs);
    for (i=0; i<nb_desc; i++) {
      sample_index = gf_bs_read_int(bs, 8);
      avail -= 1;
      e = gf_isom_box_parse((GF_Box **) &a, bs);
      if (e) goto exit;
      avail -= (s32) a->size;

      if (avail<0) {
        e = GF_NON_COMPLIANT_BITSTREAM;
        goto exit;
      }
      txdesc = (GF_TextSampleDescriptor *)gf_malloc(sizeof(GF_TextSampleDescriptor));
      txdesc->sample_index = sample_index;
      txdesc->displayFlags = a->displayFlags;
      txdesc->back_color = a->back_color;
      txdesc->default_pos = a->default_box;
      txdesc->default_style = a->default_style;
      txdesc->vert_justif = a->vertical_justification;
      txdesc->horiz_justif = a->horizontal_justification;
      txdesc->font_count = a->font_table ? a->font_table->entry_count : 0;
      if (txdesc->font_count) {
        txdesc->fonts = (GF_FontRecord*)gf_malloc(sizeof(GF_FontRecord)*txdesc->font_count);
        for (j=0; j<txdesc->font_count; j++) {
          txdesc->fonts[j].fontID = a->font_table->fonts[j].fontID;
          txdesc->fonts[j].fontName = a->font_table->fonts[j].fontName ? gf_strdup(a->font_table->fonts[j].fontName) : NULL;
        }
      }
      gf_list_add(cfg->sample_descriptions, txdesc);
      gf_isom_box_del((GF_Box *)a);
    }
  }
#endif

  if (cfg->has_vid_info) {
    cfg->video_width = gf_bs_read_int(bs, 16);
    cfg->video_height = gf_bs_read_int(bs, 16);
    cfg->horiz_offset = gf_bs_read_int(bs, 16);
    cfg->vert_offset = gf_bs_read_int(bs, 16);
  }

#ifndef GPAC_DISABLE_ISOM
exit:
#endif
  gf_bs_del(bs);
  if (e) ResetTextConfig(cfg);
  return e;
}



GF_EXPORT
GF_HEVCConfig *gf_odf_hevc_cfg_new()
{
  GF_HEVCConfig *cfg;
  GF_SAFEALLOC(cfg, GF_HEVCConfig);
  if (!cfg) return NULL;
  cfg->param_array = gf_list_new();
  cfg->nal_unit_size = 4;
  return cfg;
}

GF_EXPORT
void gf_odf_hevc_cfg_del(GF_HEVCConfig *cfg)
{
  if (!cfg) return;
  while (gf_list_count(cfg->param_array)) {
    GF_NALUFFParamArray *pa = (GF_NALUFFParamArray*)gf_list_get(cfg->param_array, 0);
    gf_list_rem(cfg->param_array, 0);

    while (gf_list_count(pa->nalus)) {
      GF_NALUFFParam *n = (GF_NALUFFParam*)gf_list_get(pa->nalus, 0);
      gf_list_rem(pa->nalus, 0);
      if (n->data) gf_free(n->data);
      gf_free(n);
    }
    gf_list_del(pa->nalus);
    gf_free(pa);
  }
  gf_list_del(cfg->param_array);
  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_hevc_cfg_write_bs(GF_HEVCConfig *cfg, GF_BitStream *bs)
{
  u32 i, count;

  count = gf_list_count(cfg->param_array);

  if (!cfg->write_annex_b) {
    gf_bs_write_int(bs, cfg->configurationVersion, 8);

    if (!cfg->is_lhvc) {
      gf_bs_write_int(bs, cfg->profile_space, 2);
      gf_bs_write_int(bs, cfg->tier_flag, 1);
      gf_bs_write_int(bs, cfg->profile_idc, 5);
      gf_bs_write_int(bs, cfg->general_profile_compatibility_flags, 32);
      gf_bs_write_int(bs, cfg->progressive_source_flag, 1);
      gf_bs_write_int(bs, cfg->interlaced_source_flag, 1);
      gf_bs_write_int(bs, cfg->non_packed_constraint_flag, 1);
      gf_bs_write_int(bs, cfg->frame_only_constraint_flag, 1);
      /*only lowest 44 bits used*/
      gf_bs_write_long_int(bs, cfg->constraint_indicator_flags, 44);
      gf_bs_write_int(bs, cfg->level_idc, 8);
    }

    gf_bs_write_int(bs, 0xFF, 4);
    gf_bs_write_int(bs, cfg->min_spatial_segmentation_idc, 12);

    gf_bs_write_int(bs, 0xFF, 6);
    gf_bs_write_int(bs, cfg->parallelismType, 2);

    if (!cfg->is_lhvc) {
      gf_bs_write_int(bs, 0xFF, 6);
      gf_bs_write_int(bs, cfg->chromaFormat, 2);
      gf_bs_write_int(bs, 0xFF, 5);
      gf_bs_write_int(bs, cfg->luma_bit_depth-8, 3);
      gf_bs_write_int(bs, 0xFF, 5);
      gf_bs_write_int(bs, cfg->chroma_bit_depth-8, 3);
      gf_bs_write_int(bs, cfg->avgFrameRate, 16);

      gf_bs_write_int(bs, cfg->constantFrameRate, 2);
    } else {
      gf_bs_write_int(bs, 0xFF, 2);
    }

    gf_bs_write_int(bs, cfg->numTemporalLayers, 3);
    gf_bs_write_int(bs, cfg->temporalIdNested, 1);
    gf_bs_write_int(bs, cfg->nal_unit_size - 1, 2);

    gf_bs_write_int(bs, count, 8);
  }

  for (i=0; i<count; i++) {
    u32 nalucount, j;
    GF_NALUFFParamArray *ar = (GF_NALUFFParamArray*)gf_list_get(cfg->param_array, i);

    nalucount = gf_list_count(ar->nalus);
    if (!cfg->write_annex_b) {
      gf_bs_write_int(bs, ar->array_completeness, 1);
      gf_bs_write_int(bs, 0, 1);
      gf_bs_write_int(bs, ar->type, 6);
      gf_bs_write_int(bs, nalucount, 16);
    }

    for (j=0; j<nalucount; j++) {
      GF_NALUFFParam *sl = (GF_NALUFFParam *)gf_list_get(ar->nalus, j);
      if (!cfg->write_annex_b) {
        gf_bs_write_int(bs, sl->size, 16);
      } else {
        gf_bs_write_u32(bs, 1);
      }
      gf_bs_write_data(bs, sl->data, sl->size);
    }
  }
  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_hevc_cfg_write(GF_HEVCConfig *cfg, u8 **outData, u32 *outSize)
{
  GF_Err e;
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  *outSize = 0;
  *outData = NULL;
  e = gf_odf_hevc_cfg_write_bs(cfg, bs);
  if (e==GF_OK)
    gf_bs_get_content(bs, outData, outSize);

  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_HEVCConfig *gf_odf_hevc_cfg_read_bs(GF_BitStream *bs, Bool is_lhvc)
{
  u32 i, count;
  GF_HEVCConfig *cfg = gf_odf_hevc_cfg_new();

  cfg->is_lhvc = is_lhvc;

  cfg->configurationVersion = gf_bs_read_int(bs, 8);

  if (!is_lhvc) {
    cfg->profile_space = gf_bs_read_int(bs, 2);
    cfg->tier_flag = gf_bs_read_int(bs, 1);
    cfg->profile_idc = gf_bs_read_int(bs, 5);
    cfg->general_profile_compatibility_flags = gf_bs_read_int(bs, 32);

    cfg->progressive_source_flag = gf_bs_read_int(bs, 1);
    cfg->interlaced_source_flag = gf_bs_read_int(bs, 1);
    cfg->non_packed_constraint_flag = gf_bs_read_int(bs, 1);
    cfg->frame_only_constraint_flag = gf_bs_read_int(bs, 1);
    /*only lowest 44 bits used*/
    cfg->constraint_indicator_flags = gf_bs_read_long_int(bs, 44);
    cfg->level_idc = gf_bs_read_int(bs, 8);
  }

  gf_bs_read_int(bs, 4); //reserved
  cfg->min_spatial_segmentation_idc = gf_bs_read_int(bs, 12);

  gf_bs_read_int(bs, 6);//reserved
  cfg->parallelismType = gf_bs_read_int(bs, 2);

  if (!is_lhvc) {
    gf_bs_read_int(bs, 6);
    cfg->chromaFormat = gf_bs_read_int(bs, 2);
    gf_bs_read_int(bs, 5);
    cfg->luma_bit_depth = gf_bs_read_int(bs, 3) + 8;
    gf_bs_read_int(bs, 5);
    cfg->chroma_bit_depth = gf_bs_read_int(bs, 3) + 8;
    cfg->avgFrameRate = gf_bs_read_int(bs, 16);

    cfg->constantFrameRate = gf_bs_read_int(bs, 2);
  } else {
    gf_bs_read_int(bs, 2); //reserved
  }

  cfg->numTemporalLayers = gf_bs_read_int(bs, 3);
  cfg->temporalIdNested = gf_bs_read_int(bs, 1);

  cfg->nal_unit_size = 1 + gf_bs_read_int(bs, 2);

  count = gf_bs_read_int(bs, 8);
  for (i=0; i<count; i++) {
    u32 nalucount, j;
    GF_NALUFFParamArray *ar;
    GF_SAFEALLOC(ar, GF_NALUFFParamArray);
    if (!ar) {
      gf_odf_hevc_cfg_del(cfg);
      return NULL;
    }
    ar->nalus = gf_list_new();
    gf_list_add(cfg->param_array, ar);

    ar->array_completeness = gf_bs_read_int(bs, 1);
    gf_bs_read_int(bs, 1);
    ar->type = gf_bs_read_int(bs, 6);
    nalucount = gf_bs_read_int(bs, 16);
    for (j=0; j<nalucount; j++) {
      GF_NALUFFParam *sl;
      u32 size = gf_bs_read_int(bs, 16);
      if ((size>gf_bs_available(bs)) || (size<2)) {
        GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[HEVC] Wrong param set size %d\n", size));
        gf_odf_hevc_cfg_del(cfg);
        return NULL;
      }
      GF_SAFEALLOC(sl, GF_NALUFFParam );
      if (!sl) {
        gf_odf_hevc_cfg_del(cfg);
        return NULL;
      }

      sl->size = size;
      sl->data = (char *)gf_malloc(sizeof(char) * sl->size);
      gf_bs_read_data(bs, sl->data, sl->size);
      gf_list_add(ar->nalus, sl);
    }
  }
  return cfg;
}

GF_EXPORT
GF_HEVCConfig *gf_odf_hevc_cfg_read(u8 *dsi, u32 dsi_size, Bool is_lhvc)
{
  GF_BitStream *bs = gf_bs_new(dsi, dsi_size, GF_BITSTREAM_READ);
  GF_HEVCConfig *cfg = gf_odf_hevc_cfg_read_bs(bs, is_lhvc);
  gf_bs_del(bs);
  return cfg;
}

GF_EXPORT
GF_VVCConfig *gf_odf_vvc_cfg_new()
{
  GF_VVCConfig *cfg;
  GF_SAFEALLOC(cfg, GF_VVCConfig);
  if (!cfg) return NULL;
  cfg->param_array = gf_list_new();
  cfg->nal_unit_size = 4;
  cfg->chroma_format = 1;
  cfg->bit_depth = 8;
  return cfg;
}

GF_EXPORT
void gf_odf_vvc_cfg_del(GF_VVCConfig *cfg)
{
  if (!cfg) return;
  while (gf_list_count(cfg->param_array)) {
    GF_NALUFFParamArray *pa = (GF_NALUFFParamArray*)gf_list_get(cfg->param_array, 0);
    gf_list_rem(cfg->param_array, 0);

    while (gf_list_count(pa->nalus)) {
      GF_NALUFFParam *n = (GF_NALUFFParam*)gf_list_get(pa->nalus, 0);
      gf_list_rem(pa->nalus, 0);
      if (n->data) gf_free(n->data);
      gf_free(n);
    }
    gf_list_del(pa->nalus);
    gf_free(pa);
  }
  gf_list_del(cfg->param_array);
  if (cfg->general_constraint_info)
    gf_free(cfg->general_constraint_info);
  if (cfg->sub_profiles_idc)
    gf_free(cfg->sub_profiles_idc);
  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_vvc_cfg_write_bs(GF_VVCConfig *cfg, GF_BitStream *bs)
{
  u32 i, count;

  count = gf_list_count(cfg->param_array);

  if (!cfg->write_annex_b) {

    gf_bs_write_int(bs, 0xFF, 5);
    gf_bs_write_int(bs, cfg->nal_unit_size - 1, 2);
    gf_bs_write_int(bs, cfg->ptl_present, 1);

    if (cfg->ptl_present) {
      s32 idx;

      gf_bs_write_int(bs, cfg->ols_idx, 9);
      gf_bs_write_int(bs, cfg->numTemporalLayers, 3);
      gf_bs_write_int(bs, cfg->constantFrameRate, 2);
      gf_bs_write_int(bs, cfg->chroma_format, 2);
      gf_bs_write_int(bs, cfg->bit_depth - 8, 3);
      gf_bs_write_int(bs, 0xFF, 5);

      if (!cfg->general_constraint_info)
        cfg->num_constraint_info = 0;

      //write PTL
      gf_bs_write_int(bs, 0, 2);
      gf_bs_write_int(bs, cfg->num_constraint_info, 6);
      gf_bs_write_int(bs, cfg->general_profile_idc, 7);
      gf_bs_write_int(bs, cfg->general_tier_flag, 1);
      gf_bs_write_u8(bs, cfg->general_level_idc);
      gf_bs_write_int(bs, cfg->ptl_frame_only_constraint, 1);
      gf_bs_write_int(bs, cfg->ptl_multilayer_enabled, 1);

      if (cfg->num_constraint_info) {
        gf_bs_write_data(bs, cfg->general_constraint_info, cfg->num_constraint_info - 1);
        gf_bs_write_int(bs, cfg->general_constraint_info[cfg->num_constraint_info - 1], 6);
      } else {
        gf_bs_write_int(bs, 0, 6);
      }

      for (idx=cfg->numTemporalLayers-2; idx>=0; idx--) {
        u8 val = cfg->ptl_sublayer_present_mask & (1<<idx);
        gf_bs_write_int(bs, val ? 1 : 0, 1);
      }
      for (idx=cfg->numTemporalLayers; idx<=8 && cfg->numTemporalLayers>1; idx++) {
        gf_bs_write_int(bs, 0, 1);
      }
      for (idx=cfg->numTemporalLayers-2; idx>=0; idx--) {
        if (cfg->ptl_sublayer_present_mask & (1<<idx))
          gf_bs_write_u8(bs, cfg->sublayer_level_idc[idx]);
      }
      if (!cfg->sub_profiles_idc) cfg->num_sub_profiles = 0;
      gf_bs_write_u8(bs, cfg->num_sub_profiles);
      for (idx=0; idx<cfg->num_sub_profiles; idx++) {
        gf_bs_write_u32(bs, cfg->sub_profiles_idc[idx]);
      }
      //end PTL

      gf_bs_write_u16(bs, cfg->maxPictureWidth);
      gf_bs_write_u16(bs, cfg->maxPictureHeight);
      gf_bs_write_u16(bs, cfg->avgFrameRate);
    }
    gf_bs_write_int(bs, count, 8);
  }

  for (i=0; i<count; i++) {
    u32 nalucount, j;
    GF_NALUFFParamArray *ar = (GF_NALUFFParamArray*)gf_list_get(cfg->param_array, i);

    nalucount = gf_list_count(ar->nalus);
    if (!cfg->write_annex_b) {
      gf_bs_write_int(bs, ar->array_completeness, 1);
      gf_bs_write_int(bs, 0, 2);
      gf_bs_write_int(bs, ar->type, 5);

      if ((ar->type != GF_VVC_NALU_DEC_PARAM) && (ar->type != GF_VVC_NALU_OPI))
        gf_bs_write_int(bs, nalucount, 16);
      else
        nalucount = 1;
    }

    for (j=0; j<nalucount; j++) {
      GF_NALUFFParam *sl = (GF_NALUFFParam *)gf_list_get(ar->nalus, j);
      if (!sl)
        return GF_ISOM_INVALID_MEDIA;
      if (!cfg->write_annex_b) {
        gf_bs_write_int(bs, sl->size, 16);
      } else {
        gf_bs_write_u32(bs, 1);
      }
      gf_bs_write_data(bs, sl->data, sl->size);
    }
  }
  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_vvc_cfg_write(GF_VVCConfig *cfg, u8 **outData, u32 *outSize)
{
  GF_Err e;
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  *outSize = 0;
  *outData = NULL;
  e = gf_odf_vvc_cfg_write_bs(cfg, bs);
  if (e==GF_OK)
    gf_bs_get_content(bs, outData, outSize);

  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_VVCConfig *gf_odf_vvc_cfg_read_bs(GF_BitStream *bs)
{
  u32 i, count;
  GF_VVCConfig *cfg = gf_odf_vvc_cfg_new();

  gf_bs_read_int(bs, 5);
  cfg->nal_unit_size = 1 + gf_bs_read_int(bs, 2);
  cfg->ptl_present = gf_bs_read_int(bs, 1);

  if (cfg->ptl_present) {
    s32 j;

    cfg->ols_idx = gf_bs_read_int(bs, 9);
    cfg->numTemporalLayers = gf_bs_read_int(bs, 3);
    cfg->constantFrameRate = gf_bs_read_int(bs, 2);
    cfg->chroma_format = gf_bs_read_int(bs, 2);
    cfg->bit_depth = 8 + gf_bs_read_int(bs, 3);
    gf_bs_read_int(bs, 5);

    //parse PTL
    gf_bs_read_int(bs, 2);
    cfg->num_constraint_info = gf_bs_read_int(bs, 6);
    cfg->general_profile_idc = gf_bs_read_int(bs, 7);
    cfg->general_tier_flag = gf_bs_read_int(bs, 1);
    cfg->general_level_idc = gf_bs_read_u8(bs);
    cfg->ptl_frame_only_constraint = gf_bs_read_int(bs, 1);
    cfg->ptl_multilayer_enabled = gf_bs_read_int(bs, 1);

    if (cfg->num_constraint_info) {
      cfg->general_constraint_info = gf_malloc(sizeof(u8)*cfg->num_constraint_info);
      if (!cfg->general_constraint_info) {
        gf_free(cfg);
        GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[VVC] alloc failed while parsing vvc config\n"));
        return NULL;
      }
      gf_bs_read_data(bs, cfg->general_constraint_info, cfg->num_constraint_info - 1);
      cfg->general_constraint_info[cfg->num_constraint_info-1] =  gf_bs_read_int(bs, 6);
    } else {
      //forbidden in spec!
      gf_bs_read_int(bs, 6);
    }

    cfg->ptl_sublayer_present_mask = 0;
    for (j=cfg->numTemporalLayers-2; j>=0; j--) {
      u32 val = gf_bs_read_int(bs, 1);
      cfg->ptl_sublayer_present_mask |= val << j;
    }
    for (j=cfg->numTemporalLayers; j<=8 && cfg->numTemporalLayers>1; j++) {
      gf_bs_read_int(bs, 1);
    }
    for (j=cfg->numTemporalLayers-2; j>=0; j--) {
      if (cfg->ptl_sublayer_present_mask & (1<<j)) {
        cfg->sublayer_level_idc[j] = gf_bs_read_u8(bs);
      }
    }
    cfg->num_sub_profiles = gf_bs_read_u8(bs);
    if (cfg->num_sub_profiles) {
      cfg->sub_profiles_idc = gf_malloc(sizeof(u32)*cfg->num_sub_profiles);
      if (!cfg->sub_profiles_idc) {
        gf_free(cfg->general_constraint_info);
        gf_free(cfg);
        GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[VVC] alloc failed while parsing vvc config\n"));
        return NULL;
      }
    }
    for (i=0; i<cfg->num_sub_profiles; i++) {
      cfg->sub_profiles_idc[i] = gf_bs_read_u32(bs);
    }

    //end PTL

    cfg->maxPictureWidth = gf_bs_read_u16(bs);
    cfg->maxPictureHeight = gf_bs_read_u16(bs);
    cfg->avgFrameRate = gf_bs_read_u16(bs);
  }

  count = gf_bs_read_int(bs, 8);
  for (i=0; i<count; i++) {
    u32 nalucount, j;
    Bool valid = GF_FALSE;
    GF_NALUFFParamArray *ar;
    GF_SAFEALLOC(ar, GF_NALUFFParamArray);
    if (!ar) {
      gf_odf_vvc_cfg_del(cfg);
      GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[VVC] alloc failed while parsing vvc config\n"));
      return NULL;
    }
    ar->array_completeness = gf_bs_read_int(bs, 1);
    gf_bs_read_int(bs, 2);
    ar->type = gf_bs_read_int(bs, 5);

    switch (ar->type) {
    case GF_VVC_NALU_DEC_PARAM:
    case GF_VVC_NALU_OPI:
    case GF_VVC_NALU_VID_PARAM:
    case GF_VVC_NALU_SEQ_PARAM:
    case GF_VVC_NALU_PIC_PARAM:
    case GF_VVC_NALU_SEI_PREFIX:
    case GF_VVC_NALU_SEI_SUFFIX:
      valid = GF_TRUE;
      ar->nalus = gf_list_new();
      gf_list_add(cfg->param_array, ar);
      break;
    default:
      GF_LOG(GF_LOG_WARNING, GF_LOG_CODING, ("[VVC] Invalid NALU type %d in vvcC - ignoring\n", ar->type));
      gf_free(ar);
      break;
    }

    if (!valid || ((ar->type != GF_VVC_NALU_DEC_PARAM) && (ar->type != GF_VVC_NALU_OPI)))
      nalucount = gf_bs_read_int(bs, 16);
    else
      nalucount = 1;

    for (j=0; j<nalucount; j++) {
      GF_NALUFFParam *sl;
      u32 size = gf_bs_read_int(bs, 16);
      if ((size>gf_bs_available(bs)) || (size<2)) {
        GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[VVC] Wrong param set size %d\n", size));
        gf_odf_vvc_cfg_del(cfg);
        return NULL;
      }
      if (!valid) {
        gf_bs_skip_bytes(bs, size);
        continue;
      }
      GF_SAFEALLOC(sl, GF_NALUFFParam );
      if (!sl) {
        gf_odf_vvc_cfg_del(cfg);
        GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[VVC] alloc failed while parsing vvc config\n"));
        return NULL;
      }

      sl->size = size;
      sl->data = (char *)gf_malloc(sizeof(char) * sl->size);
      if (!sl->data) {
        gf_free(sl);
        gf_odf_vvc_cfg_del(cfg);
        GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[VVC] alloc failed while parsing vvc config\n"));
        return NULL;
      }
      gf_bs_read_data(bs, sl->data, sl->size);
      gf_list_add(ar->nalus, sl);
    }
  }
  return cfg;
}

GF_EXPORT
GF_VVCConfig *gf_odf_vvc_cfg_read(u8 *dsi, u32 dsi_size)
{
  GF_BitStream *bs = gf_bs_new(dsi, dsi_size, GF_BITSTREAM_READ);
  GF_VVCConfig *cfg = gf_odf_vvc_cfg_read_bs(bs);
  gf_bs_del(bs);
  return cfg;
}

GF_EXPORT
GF_AV1Config *gf_odf_av1_cfg_new()
{
  GF_AV1Config *cfg;
  GF_SAFEALLOC(cfg, GF_AV1Config);
  if (!cfg) return NULL;
  cfg->marker = 1;
  cfg->version = 1;
  cfg->initial_presentation_delay_minus_one = 0;
  cfg->obu_array = gf_list_new();
  return cfg;
}

GF_EXPORT
void gf_odf_av1_cfg_del(GF_AV1Config *cfg)
{
  if (!cfg) return;
  while (gf_list_count(cfg->obu_array)) {
    GF_AV1_OBUArrayEntry *a = (GF_AV1_OBUArrayEntry*)gf_list_get(cfg->obu_array, 0);
    if (a->obu) gf_free(a->obu);
    gf_list_rem(cfg->obu_array, 0);
    gf_free(a);
  }
  gf_list_del(cfg->obu_array);
  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_av1_cfg_write_bs(GF_AV1Config *cfg, GF_BitStream *bs)
{
  u32 i = 0;
  gf_bs_write_int(bs, cfg->marker, 1);
  gf_assert(cfg->marker == 1);
  gf_bs_write_int(bs, cfg->version, 7);
  gf_assert(cfg->version == 1);
  gf_bs_write_int(bs, cfg->seq_profile, 3);
  gf_bs_write_int(bs, cfg->seq_level_idx_0, 5);
  gf_bs_write_int(bs, cfg->seq_tier_0, 1);
  gf_bs_write_int(bs, cfg->high_bitdepth, 1);
  gf_bs_write_int(bs, cfg->twelve_bit, 1);
  gf_bs_write_int(bs, cfg->monochrome, 1);
  gf_bs_write_int(bs, cfg->chroma_subsampling_x, 1);
  gf_bs_write_int(bs, cfg->chroma_subsampling_y, 1);
  gf_bs_write_int(bs, cfg->chroma_sample_position, 2);
  gf_bs_write_int(bs, 0, 3); /*reserved*/
  gf_bs_write_int(bs, cfg->initial_presentation_delay_present, 1);
  gf_bs_write_int(bs, cfg->initial_presentation_delay_minus_one, 4); /*TODO: compute initial_presentation_delay_minus_one*/
  for (i = 0; i < gf_list_count(cfg->obu_array); ++i) {
    GF_AV1_OBUArrayEntry *a = gf_list_get(cfg->obu_array, i);
    gf_bs_write_data(bs, a->obu, (u32)a->obu_length); //TODO: we are supposed to omit the size on the last OBU...
  }
  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_av1_cfg_write(GF_AV1Config *cfg, u8 **outData, u32 *outSize) {
  GF_Err e;
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  *outSize = 0;
  *outData = NULL;
  e = gf_odf_av1_cfg_write_bs(cfg, bs);
  if (e == GF_OK)
    gf_bs_get_content(bs, outData, outSize);

  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_VPConfig *gf_odf_vp_cfg_new()
{
  GF_VPConfig *cfg;
  GF_SAFEALLOC(cfg, GF_VPConfig);
  if (!cfg) return NULL;
  cfg->codec_initdata_size = 0;
  cfg->codec_initdata = NULL;
  return cfg;
}

GF_EXPORT
void gf_odf_vp_cfg_del(GF_VPConfig *cfg)
{
  if (!cfg) return;

  if (cfg->codec_initdata) {
    gf_free(cfg->codec_initdata);
    cfg->codec_initdata = NULL;
  }

  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_vp_cfg_write_bs(GF_VPConfig *cfg, GF_BitStream *bs, Bool is_v0)
{
  gf_bs_write_int(bs, cfg->profile, 8);
  gf_bs_write_int(bs, cfg->level, 8);
  gf_bs_write_int(bs, cfg->bit_depth, 4);
  gf_bs_write_int(bs, cfg->chroma_subsampling, 3);
  gf_bs_write_int(bs, cfg->video_fullRange_flag, 1);
  gf_bs_write_int(bs, cfg->colour_primaries, 8);
  gf_bs_write_int(bs, cfg->transfer_characteristics, 8);
  gf_bs_write_int(bs, cfg->matrix_coefficients, 8);

  if (!is_v0) {
    if (cfg->codec_initdata_size) {
      GF_LOG(GF_LOG_WARNING, GF_LOG_CODING, ("[VPX] Invalid data in configuration: codec_initdata_size must be 0, was %d - ignoring\n", cfg->codec_initdata_size));
    }

    gf_bs_write_int(bs, (u16)0, 16);
  }

  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_vp_cfg_write(GF_VPConfig *cfg, u8 **outData, u32 *outSize, Bool is_v0)
{
  GF_Err e;
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  *outSize = 0;
  *outData = NULL;
  e = gf_odf_vp_cfg_write_bs(cfg, bs, is_v0);
  if (e==GF_OK)
    gf_bs_get_content(bs, outData, outSize);

  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_VPConfig *gf_odf_vp_cfg_read_bs(GF_BitStream *bs, Bool is_v0)
{
  GF_VPConfig *cfg = gf_odf_vp_cfg_new();

  cfg->profile = gf_bs_read_int(bs, 8);
  cfg->level = gf_bs_read_int(bs, 8);

  cfg->bit_depth = gf_bs_read_int(bs, 4);
  cfg->chroma_subsampling = gf_bs_read_int(bs, 3);
  cfg->video_fullRange_flag = gf_bs_read_int(bs, 1);

  cfg->colour_primaries = gf_bs_read_int(bs, 8);
  cfg->transfer_characteristics = gf_bs_read_int(bs, 8);
  cfg->matrix_coefficients = gf_bs_read_int(bs, 8);

  if (is_v0)
    return cfg;

  cfg->codec_initdata_size = gf_bs_read_int(bs, 16);

  // must be 0 according to spec
  if (cfg->codec_initdata_size) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[VPX] Invalid data in configuration: codec_initdata_size must be 0, was %d\n", cfg->codec_initdata_size));
    gf_odf_vp_cfg_del(cfg);
    return NULL;
  }

  return cfg;
}

GF_EXPORT
GF_VPConfig *gf_odf_vp_cfg_read(u8 *dsi, u32 dsi_size)
{
  GF_BitStream *bs = gf_bs_new(dsi, dsi_size, GF_BITSTREAM_READ);
  GF_VPConfig *cfg = gf_odf_vp_cfg_read_bs(bs, GF_FALSE);
  gf_bs_del(bs);
  return cfg;
}

GF_EXPORT
GF_AV1Config *gf_odf_av1_cfg_read_bs_size(GF_BitStream *bs, u32 size)
{
#ifndef GPAC_DISABLE_AV_PARSERS
  AV1State *av1_state;
  u8 reserved;
  GF_AV1Config *cfg;

  if (!size) size = (u32) gf_bs_available(bs);
  if (!size) return NULL;

  GF_SAFEALLOC(av1_state, AV1State);
  if (!av1_state) return NULL;
  cfg = gf_odf_av1_cfg_new();
  gf_av1_init_state(av1_state);
  av1_state->config = cfg;

  cfg->marker = gf_bs_read_int(bs, 1);
  cfg->version = gf_bs_read_int(bs, 7);
  cfg->seq_profile = gf_bs_read_int(bs, 3);
  cfg->seq_level_idx_0 = gf_bs_read_int(bs, 5);
  cfg->seq_tier_0 = gf_bs_read_int(bs, 1);
  cfg->high_bitdepth = gf_bs_read_int(bs, 1);
  cfg->twelve_bit = gf_bs_read_int(bs, 1);
  cfg->monochrome = gf_bs_read_int(bs, 1);
  cfg->chroma_subsampling_x = gf_bs_read_int(bs, 1);
  cfg->chroma_subsampling_y = gf_bs_read_int(bs, 1);
  cfg->chroma_sample_position = gf_bs_read_int(bs, 2);

  reserved = gf_bs_read_int(bs, 3);
  cfg->initial_presentation_delay_present = gf_bs_read_int(bs, 1);
  if (cfg->initial_presentation_delay_present) {
    cfg->initial_presentation_delay_minus_one = gf_bs_read_int(bs, 4);
  } else {
    /*reserved = */gf_bs_read_int(bs, 4);
    cfg->initial_presentation_delay_minus_one = 0;
  }
  size -= 4;

  if (reserved != 0 || cfg->marker != 1 || cfg->version != 1) {
    GF_LOG(GF_LOG_DEBUG, GF_LOG_CODING, ("[AV1] av1C: wrong reserved %d / marker %d / version %d expecting 0 1 1\n", reserved, cfg->marker, cfg->version));
    gf_odf_av1_cfg_del(cfg);
    gf_free(av1_state);
    return NULL;
  }

  while (size) {
    u64 pos, obu_size;
    ObuType obu_type;
    GF_AV1_OBUArrayEntry *a;

    pos = gf_bs_get_position(bs);
    obu_size = 0;
    if (gf_av1_parse_obu(bs, &obu_type, &obu_size, NULL, av1_state) != GF_OK) {
      GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[AV1] av1C: could not parse AV1 OBU at position "LLU". Leaving parsing.\n", pos));
      break;
    }
    gf_assert(obu_size == gf_bs_get_position(bs) - pos);
    GF_LOG(GF_LOG_DEBUG, GF_LOG_CODING, ("[AV1] av1C: parsed AV1 OBU type=%u size="LLU" at position "LLU".\n", obu_type, obu_size, pos));

    if (!av1_is_obu_header(obu_type)) {
      GF_LOG(GF_LOG_DEBUG, GF_LOG_CODING, ("[AV1] av1C: AV1 unexpected OBU type=%u size="LLU" found at position "LLU". Forwarding.\n", pos));
    }
    GF_SAFEALLOC(a, GF_AV1_OBUArrayEntry);
    if (!a) break;
    a->obu = gf_malloc((size_t)obu_size);
    if (!a->obu) {
      gf_free(a);
      break;
    }
    gf_bs_seek(bs, pos);
    gf_bs_read_data(bs, (char *) a->obu, (u32)obu_size);
    a->obu_length = obu_size;
    a->obu_type = obu_type;
    gf_list_add(cfg->obu_array, a);

    if (size<obu_size) {
      GF_LOG(GF_LOG_WARNING, GF_LOG_CODING, ("[AV1] AV1 config misses %d bytes to fit the entire OBU\n", obu_size - size));
      break;
    }
    size -= (u32) obu_size;
  }
  gf_av1_reset_state(av1_state, GF_TRUE);
  gf_bs_align(bs);
  gf_free(av1_state);
  return cfg;
#else
  return NULL;
#endif
}

GF_EXPORT
GF_AV1Config *gf_odf_av1_cfg_read_bs(GF_BitStream *bs)
{
  return gf_odf_av1_cfg_read_bs_size(bs, 0);

}
GF_EXPORT
GF_AV1Config *gf_odf_av1_cfg_read(u8 *dsi, u32 dsi_size)
{
  GF_BitStream *bs = gf_bs_new(dsi, dsi_size, GF_BITSTREAM_READ);
  GF_AV1Config *cfg = gf_odf_av1_cfg_read_bs(bs);
  gf_bs_del(bs);
  return cfg;
}



GF_EXPORT
GF_AVS3VConfig *gf_odf_avs3v_cfg_new()
{
  GF_AVS3VConfig *cfg;
  GF_SAFEALLOC(cfg, GF_AVS3VConfig);
  if (!cfg) return NULL;
  return cfg;
}

GF_EXPORT
void gf_odf_avs3v_cfg_del(GF_AVS3VConfig *cfg)
{
  if (!cfg) return;
  if (cfg->sequence_header) gf_free(cfg->sequence_header);
  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_avs3v_cfg_write_bs(GF_AVS3VConfig *cfg, GF_BitStream *bs)
{
  gf_bs_write_int(bs, cfg->configurationVersion, 8);
  gf_bs_write_int(bs, cfg->sequence_header_length, 16);
  gf_bs_write_data(bs, cfg->sequence_header, cfg->sequence_header_length);
  gf_bs_write_int(bs, 0xFF, 6); //reserved
  gf_bs_write_int(bs, cfg->library_dependency_idc, 2);

  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_avs3v_cfg_write(GF_AVS3VConfig *cfg, u8 **outData, u32 *outSize)
{
  GF_Err e;
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  *outSize = 0;
  *outData = NULL;
  e = gf_odf_avs3v_cfg_write_bs(cfg, bs);
  if (e==GF_OK)
    gf_bs_get_content(bs, outData, outSize);

  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_AVS3VConfig *gf_odf_avs3v_cfg_read_bs(GF_BitStream *bs)
{
  GF_AVS3VConfig *cfg = gf_odf_avs3v_cfg_new();

  cfg->configurationVersion = gf_bs_read_int(bs, 8);
  cfg->sequence_header_length = gf_bs_read_int(bs, 16);
  cfg->sequence_header = gf_malloc(cfg->sequence_header_length);
  if (!cfg->sequence_header) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[AVS3 Video] Sequence header allocation failed\n"));
    gf_odf_avs3v_cfg_del(cfg);
    return NULL;
  }
  gf_bs_read_data(bs, (char *)cfg->sequence_header, (u32)cfg->sequence_header_length);
  gf_bs_read_int(bs, 6); //reserved
  cfg->library_dependency_idc = gf_bs_read_int(bs, 2); // 6 bits reserved at '1' + 2 bits

  return cfg;
}

GF_EXPORT
GF_AVS3VConfig *gf_odf_avs3v_cfg_read(u8 *dsi, u32 dsi_size)
{
  GF_BitStream *bs = gf_bs_new(dsi, dsi_size, GF_BITSTREAM_READ);
  GF_AVS3VConfig *cfg = gf_odf_avs3v_cfg_read_bs(bs);
  gf_bs_del(bs);
  return cfg;
}


GF_EXPORT
GF_DOVIDecoderConfigurationRecord *gf_odf_dovi_cfg_read_bs(GF_BitStream *bs)
{
  GF_DOVIDecoderConfigurationRecord *cfg;
  GF_SAFEALLOC(cfg, GF_DOVIDecoderConfigurationRecord);

  cfg->dv_version_major = gf_bs_read_u8(bs);
  cfg->dv_version_minor = gf_bs_read_u8(bs);
  cfg->dv_profile = gf_bs_read_int(bs, 7);
  cfg->dv_level = gf_bs_read_int(bs, 6);
  cfg->rpu_present_flag = gf_bs_read_int(bs, 1);
  cfg->el_present_flag = gf_bs_read_int(bs, 1);
  cfg->bl_present_flag = gf_bs_read_int(bs, 1);
  cfg->dv_bl_signal_compatibility_id = gf_bs_read_int(bs, 4);
  if (gf_bs_read_int(bs, 28)) {
    GF_LOG(GF_LOG_WARNING, GF_LOG_CODING, ("[DOVI] Configuration reserved bits are not zero\n"));
  }
  for (u32 i=0; i<4; i++) {
    if (gf_bs_read_u32(bs)) {
      GF_LOG(GF_LOG_WARNING, GF_LOG_CODING, ("[DOVII] Configuration reserved bits are not zero\n"));
    }
  }
  return cfg;
}

GF_EXPORT
void gf_odf_dovi_cfg_del(GF_DOVIDecoderConfigurationRecord *cfg)
{
  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_dovi_cfg_write_bs(GF_DOVIDecoderConfigurationRecord *cfg, GF_BitStream *bs)
{
  gf_bs_write_u8(bs,  cfg->dv_version_major);
  gf_bs_write_u8(bs,  cfg->dv_version_minor);
  gf_bs_write_int(bs, cfg->dv_profile, 7);
  gf_bs_write_int(bs, cfg->dv_level, 6);
  gf_bs_write_int(bs, cfg->rpu_present_flag, 1);
  gf_bs_write_int(bs, cfg->el_present_flag, 1);
  gf_bs_write_int(bs, cfg->bl_present_flag, 1);
  gf_bs_write_int(bs, cfg->dv_bl_signal_compatibility_id, 4);
  gf_bs_write_int(bs, 0, 28);
  gf_bs_write_u32(bs, 0);
  gf_bs_write_u32(bs, 0);
  gf_bs_write_u32(bs, 0);
  gf_bs_write_u32(bs, 0);
  return GF_OK;
}


GF_EXPORT
GF_Err gf_odf_ac3_cfg_write_bs(GF_AC3Config *cfg, GF_BitStream *bs)
{
  if (!cfg || !bs) return GF_BAD_PARAM;

  if (cfg->is_ec3) {
    u32 i;
    gf_bs_write_int(bs, cfg->brcode, 13);
    gf_bs_write_int(bs, cfg->nb_streams - 1, 3);
    for (i=0; i<cfg->nb_streams; i++) {
      gf_bs_write_int(bs, cfg->streams[i].fscod, 2);
      gf_bs_write_int(bs, cfg->streams[i].bsid, 5);
      gf_bs_write_int(bs, cfg->streams[i].bsmod, 5);
      gf_bs_write_int(bs, cfg->streams[i].acmod, 3);
      gf_bs_write_int(bs, cfg->streams[i].lfon, 1);
      gf_bs_write_int(bs, 0, 3);
      gf_bs_write_int(bs, cfg->streams[i].nb_dep_sub, 4);
      if (cfg->streams[i].nb_dep_sub) {
        gf_bs_write_int(bs, cfg->streams[i].chan_loc, 9);
      } else {
        gf_bs_write_int(bs, 0, 1);
      }
    }
  } else {
    gf_bs_write_int(bs, cfg->streams[0].fscod, 2);
    gf_bs_write_int(bs, cfg->streams[0].bsid, 5);
    gf_bs_write_int(bs, cfg->streams[0].bsmod, 3);
    gf_bs_write_int(bs, cfg->streams[0].acmod, 3);
    gf_bs_write_int(bs, cfg->streams[0].lfon, 1);
    gf_bs_write_int(bs, cfg->brcode, 5);
    gf_bs_write_int(bs, 0, 5);
  }
  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_ac3_cfg_write(GF_AC3Config *cfg, u8 **data, u32 *size)
{
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  GF_Err e = gf_odf_ac3_cfg_write_bs(cfg, bs);

  if (cfg->is_ec3 && (cfg->atmos_ec3_ext || cfg->complexity_index_type)) {
    gf_bs_write_int(bs, 0, 7);
    gf_bs_write_int(bs, cfg->atmos_ec3_ext, 1);
    gf_bs_write_u8(bs, cfg->complexity_index_type);
  }
  gf_bs_get_content(bs, data, size);

  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_Err gf_odf_ac3_cfg_parse_bs(GF_BitStream *bs, Bool is_ec3, GF_AC3Config *cfg)
{
  if (!cfg || !bs) return GF_BAD_PARAM;
  memset(cfg, 0, sizeof(GF_AC3Config));
  cfg->is_ec3 = is_ec3;
  if (is_ec3) {
    u32 j;
    cfg->is_ec3 = 1;
    cfg->brcode = gf_bs_read_int(bs, 13);
    cfg->nb_streams = 1 + gf_bs_read_int(bs, 3);
    for (j=0; j<cfg->nb_streams; j++) {
      cfg->streams[j].fscod = gf_bs_read_int(bs, 2);
      cfg->streams[j].bsid = gf_bs_read_int(bs, 5);
      gf_bs_read_int(bs, 1);
      cfg->streams[j].asvc = gf_bs_read_int(bs, 1);
      cfg->streams[j].bsmod = gf_bs_read_int(bs, 3);
      cfg->streams[j].acmod = gf_bs_read_int(bs, 3);
      cfg->streams[j].lfon = gf_bs_read_int(bs, 1);
      gf_bs_read_int(bs, 3);
      cfg->streams[j].nb_dep_sub = gf_bs_read_int(bs, 4);
      if (cfg->streams[j].nb_dep_sub) {
        cfg->streams[j].chan_loc = gf_bs_read_int(bs, 9);
      } else {
        gf_bs_read_int(bs, 1);
      }
    }
  } else {
    cfg->nb_streams = 1;
    cfg->streams[0].fscod = gf_bs_read_int(bs, 2);
    cfg->streams[0].bsid = gf_bs_read_int(bs, 5);
    cfg->streams[0].bsmod = gf_bs_read_int(bs, 3);
    cfg->streams[0].acmod = gf_bs_read_int(bs, 3);
    cfg->streams[0].lfon = gf_bs_read_int(bs, 1);
    cfg->brcode = gf_bs_read_int(bs, 5);
    gf_bs_read_int(bs, 5);
  }
  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_ac3_cfg_parse(u8 *dsi, u32 dsi_len, Bool is_ec3, GF_AC3Config *cfg)
{
  GF_BitStream *bs;
  GF_Err e;
  if (!cfg || !dsi) return GF_BAD_PARAM;
  bs = gf_bs_new(dsi, dsi_len, GF_BITSTREAM_READ);
  e = gf_odf_ac3_cfg_parse_bs(bs, is_ec3, cfg);
  if (is_ec3 && gf_bs_available(bs)>=2) {
    gf_bs_read_int(bs, 7);
    cfg->atmos_ec3_ext = gf_bs_read_int(bs, 1);
    cfg->complexity_index_type = gf_bs_read_u8(bs);
  }
  gf_bs_del(bs);
  return e;
}

#define GF_AC4_SSS(bs, value, nbits, size, mode) { \
  if (mode == GF_AC4_DESCMODE_PARSE) value = gf_bs_read_int(bs, nbits); \
  else if (mode == GF_AC4_DESCMODE_WRITE) gf_bs_write_int(bs, value, nbits); \
  else if (mode == GF_AC4_DESCMODE_GETSIZE) *size += nbits;}

#define GF_AC4_ALLIGN(bs, size, mode) { \
  if (mode == GF_AC4_DESCMODE_PARSE) gf_bs_align(bs); \
  else if (mode == GF_AC4_DESCMODE_WRITE) gf_bs_align(bs); \
  else if (mode == GF_AC4_DESCMODE_GETSIZE && (*size % 8 != 0)) *size = ((*size / 8) + 1) * 8;}

GF_Err gf_odf_ac4_cfg_alternative_info(GF_AC4AlternativeInfo *info, GF_BitStream *bs, u64 *size, u8 desc_mode)
{
  u32 i;

  GF_AC4_SSS(bs, info->name_len, 16, size, desc_mode);

  if (info->name_len >= GF_ARRAY_LENGTH(info->presentation_name))
    return GF_ISOM_INVALID_MEDIA;

  for (i = 0; i < info->name_len; i++) {
    GF_AC4_SSS(bs, info->presentation_name[i], 8, size, desc_mode);
  }

  GF_AC4_SSS(bs, info->n_targets, 5, size, desc_mode);

  if (info->n_targets >= MIN(GF_ARRAY_LENGTH(info->target_md_compat), GF_ARRAY_LENGTH(info->target_device_category)))
    return GF_ISOM_INVALID_MEDIA;

  for (i = 0; i < info->n_targets; i++) {
    GF_AC4_SSS(bs, info->target_md_compat[i], 3, size, desc_mode);
    GF_AC4_SSS(bs, info->target_device_category[i], 8, size, desc_mode);
  }
  return GF_OK;
}

GF_Err gf_odf_ac4_cfg_substream_dsi(GF_AC4SubStream *s, GF_BitStream *bs, u8 b_channel_coded, u64 *size, u8 desc_mode)
{
  u32 zero_val = 0;

  GF_AC4_SSS(bs, s->dsi_sf_multiplier, 2, size, desc_mode);
  GF_AC4_SSS(bs, s->b_substream_bitrate_indicator, 1, size, desc_mode);
  if (s->b_substream_bitrate_indicator == 1) {
    GF_AC4_SSS(bs, s->substream_bitrate_indicator, 5, size, desc_mode);
  }
  if (b_channel_coded == 1) {
    GF_AC4_SSS(bs, s->dsi_substream_channel_mask, 24, size, desc_mode);
  } else {
    GF_AC4_SSS(bs, s->b_ajoc, 1, size, desc_mode);
    if (s->b_ajoc == 1) {
      GF_AC4_SSS(bs, s->b_static_dmx, 1, size, desc_mode);
      if (s->b_static_dmx == 0) {
        GF_AC4_SSS(bs, s->n_dmx_objects_minus1, 4, size, desc_mode);
      }
      GF_AC4_SSS(bs, s->n_umx_objects_minus1, 6, size, desc_mode);
    }
    GF_AC4_SSS(bs, s->b_substream_contains_bed_objects, 1, size, desc_mode);
    GF_AC4_SSS(bs, s->b_substream_contains_dynamic_objects, 1, size, desc_mode);
    GF_AC4_SSS(bs, s->b_substream_contains_ISF_objects, 1, size, desc_mode);
    GF_AC4_SSS(bs, zero_val, 1, size, desc_mode); //reserved bit
  }
  return GF_OK;
}

GF_Err gf_odf_ac4_cfg_content_type(GF_AC4SubStreamGroupV1 *g, GF_BitStream *bs, u64 *size, u8 desc_mode)
{
  u32 i;

  GF_AC4_SSS(bs, g->b_content_type, 1, size, desc_mode);
  if (g->b_content_type == 1){
    GF_AC4_SSS(bs, g->content_classifier, 3, size, desc_mode);
    GF_AC4_SSS(bs, g->b_language_indicator, 1, size, desc_mode);
    if (g->b_language_indicator == 1){
      GF_AC4_SSS(bs, g->n_language_tag_bytes, 6, size, desc_mode);
      for (i = 0; i < g->n_language_tag_bytes; i++ ){
        GF_AC4_SSS(bs, g->language_tag_bytes[i], 8, size, desc_mode);
      }
    }
  }
  return GF_OK;
}

GF_Err gf_odf_ac4_cfg_substream_group_dsi(GF_AC4SubStreamGroupV1 *g, GF_BitStream *bs, u64 *size, u8 desc_mode)
{
  u32 i;
  GF_AC4SubStream *s;

  if (!g)
    return GF_BAD_PARAM;

  GF_AC4_SSS(bs, g->b_substreams_present, 1, size, desc_mode);
  GF_AC4_SSS(bs, g->b_hsf_ext, 1, size, desc_mode);
  GF_AC4_SSS(bs, g->b_channel_coded, 1, size, desc_mode);
  GF_AC4_SSS(bs, g->n_lf_substreams, 8, size, desc_mode);

  if (desc_mode == GF_AC4_DESCMODE_PARSE) {
    g->substreams = gf_list_new();
  }
  for (i = 0; i < g->n_lf_substreams; i++ ){
    if (desc_mode == GF_AC4_DESCMODE_PARSE) {
      GF_SAFEALLOC(s, GF_AC4SubStream);
    } else { // write or get_size
      s = (GF_AC4SubStream*)gf_list_get(g->substreams, i);
    }
    gf_odf_ac4_cfg_substream_dsi(s, bs, g->b_channel_coded, size, desc_mode);
    if (desc_mode == GF_AC4_DESCMODE_PARSE) {
      gf_list_add(g->substreams, s);
    }
  }
  gf_odf_ac4_cfg_content_type(g, bs, size, desc_mode);
  return GF_OK;
}

GF_Err gf_odf_ac4_cfg_bitrate_dsi(GF_AC4BitrateDsi *bitr, GF_BitStream *bs, u64 *size, u8 desc_mode)
{
  GF_AC4_SSS(bs, bitr->bit_rate_mode, 2, size, desc_mode);
  GF_AC4_SSS(bs, bitr->bit_rate, 32, size, desc_mode);
  GF_AC4_SSS(bs, bitr->bit_rate_precision, 32, size, desc_mode);
  return GF_OK;
}

GF_Err gf_odf_ac4_cfg_presentation_v1_dsi(GF_AC4PresentationV1 *p, GF_BitStream *bs, u64 *size, u8 desc_mode)
{
  GF_AC4SubStreamGroupV1 *g;
  u32 i, zero_val = 0;

  GF_AC4_SSS(bs, p->presentation_config, 5, size, desc_mode);
  if (p->presentation_config == 0x06) {
    p->b_add_emdf_substreams = 1;
  } else {
    GF_AC4_SSS(bs, p->mdcompat, 3, size, desc_mode);
    GF_AC4_SSS(bs, p->b_presentation_id, 1, size, desc_mode);
    if (p->b_presentation_id) {
      GF_AC4_SSS(bs, p->presentation_id, 5, size, desc_mode);
    }
    GF_AC4_SSS(bs, p->dsi_frame_rate_multiply_info, 2, size, desc_mode);
    GF_AC4_SSS(bs, p->dsi_frame_rate_fraction_info, 2, size, desc_mode);
    GF_AC4_SSS(bs, p->presentation_emdf_version, 5, size, desc_mode);
    GF_AC4_SSS(bs, p->presentation_key_id, 10, size, desc_mode);

    GF_AC4_SSS(bs, p->b_presentation_channel_coded, 1, size, desc_mode);
    if (p->b_presentation_channel_coded) {
      GF_AC4_SSS(bs, p->dsi_presentation_ch_mode, 5, size, desc_mode);
      if (p->dsi_presentation_ch_mode >= 11 && p->dsi_presentation_ch_mode <= 14) {
        GF_AC4_SSS(bs, p->pres_b_4_back_channels_present, 1, size, desc_mode);
        GF_AC4_SSS(bs, p->pres_top_channel_pairs, 2, size, desc_mode);
      }
      GF_AC4_SSS(bs, p->presentation_channel_mask_v1, 24, size, desc_mode);
    }

    GF_AC4_SSS(bs, p->b_presentation_core_differs, 1, size, desc_mode);
    if (p->b_presentation_core_differs) {
      GF_AC4_SSS(bs, p->b_presentation_core_channel_coded, 1, size, desc_mode);
      if (p->b_presentation_core_channel_coded) {
        GF_AC4_SSS(bs, p->dsi_presentation_channel_mode_core, 2, size, desc_mode);
      }
    }
    GF_AC4_SSS(bs, p->b_presentation_filter, 1, size, desc_mode);
    if (p->b_presentation_filter) {
      GF_AC4_SSS(bs, p->b_enable_presentation, 1, size, desc_mode);
      GF_AC4_SSS(bs, p->n_filter_bytes, 8, size, desc_mode);
      for (i = 0; i < p->n_filter_bytes; i++) {
        GF_AC4_SSS(bs, zero_val, 8, size, desc_mode); // filter_data
      }
    }
    // calloc memory for substream_groups
    if (desc_mode == GF_AC4_DESCMODE_PARSE) {
      p->substream_groups = gf_list_new();
    }

    if (p->presentation_config == 0x1f) {
      if (desc_mode == GF_AC4_DESCMODE_PARSE) {
        GF_SAFEALLOC(g, GF_AC4SubStreamGroupV1);
        gf_list_add(p->substream_groups, g);
        p->n_substream_groups = 1;
      } else { // write or get_size
        g = (GF_AC4SubStreamGroupV1*)gf_list_get(p->substream_groups, 0);
      }
      if (g)
        gf_odf_ac4_cfg_substream_group_dsi(g, bs, size, desc_mode);
    }
    else {
      GF_AC4_SSS(bs, p->b_multi_pid, 1, size, desc_mode);
      if (p->presentation_config >= 0 && p->presentation_config <= 2) {
        p->n_substream_groups = 2;
      }
      if (p->presentation_config == 3 || p->presentation_config == 4) {
        p->n_substream_groups = 3;
      }

      if (p->presentation_config == 5) {
        // n_substream_groups_minus2
        if (desc_mode == GF_AC4_DESCMODE_PARSE)
          p->n_substream_groups = gf_bs_read_int(bs, 3) + 2;
        else if (desc_mode == GF_AC4_DESCMODE_WRITE)
          gf_bs_write_int(bs, p->n_substream_groups - 2, 3);
        else if(desc_mode == GF_AC4_DESCMODE_GETSIZE)
          *size += 3;
      }

      for (i = 0; i < p->n_substream_groups; i++) {
        if (desc_mode == GF_AC4_DESCMODE_PARSE) {
          GF_SAFEALLOC(g, GF_AC4SubStreamGroupV1);
          gf_list_add(p->substream_groups, g);
        } else { // write or get_size
          g = (GF_AC4SubStreamGroupV1*)gf_list_get(p->substream_groups, i);
        }
        gf_odf_ac4_cfg_substream_group_dsi(g, bs, size, desc_mode);
      }

      if (p->presentation_config > 5) {
        GF_AC4_SSS(bs, p->n_skip_bytes, 7, size, desc_mode);
        for (i = 0; i < p->n_skip_bytes; i++) {
          GF_AC4_SSS(bs, zero_val, 8, size, desc_mode); // skip_data
        }
      }
    }
    GF_AC4_SSS(bs, p->b_pre_virtualized, 1, size, desc_mode);
    GF_AC4_SSS(bs, p->b_add_emdf_substreams, 1, size, desc_mode);
  }
  if (p->b_add_emdf_substreams) {
    GF_AC4_SSS(bs, p->n_add_emdf_substreams, 7, size, desc_mode);
    for (i = 0; i < p->n_add_emdf_substreams && i < GF_ARRAY_LENGTH(p->substream_emdf_version) && i < GF_ARRAY_LENGTH(p->substream_key_id); i++) {
      GF_AC4_SSS(bs, p->substream_emdf_version[i], 5, size, desc_mode);
      GF_AC4_SSS(bs, p->substream_key_id[i], 10, size, desc_mode);
    }
  }
  GF_AC4_SSS(bs, p->b_presentation_bitrate_info, 1, size, desc_mode);
  if (p->b_presentation_bitrate_info) {
    gf_odf_ac4_cfg_bitrate_dsi(&(p->ac4_bitrate_dsi), bs, size, desc_mode);
  }
  GF_AC4_SSS(bs, p->b_alternative, 1, size, desc_mode);
  if (p->b_alternative) {
    GF_AC4_ALLIGN(bs, size, desc_mode);
    gf_odf_ac4_cfg_alternative_info(&(p->alternative_info), bs, size, desc_mode);
  }
  GF_AC4_ALLIGN(bs, size, desc_mode);
   /*
   * TODO: Not implement, need the information from ac4_substream.
   * Currently just set the value to 1 according to Dolby's internal discussion.
   */
  p->de_indicator = 1;
  GF_AC4_SSS(bs, p->de_indicator, 1, size, desc_mode);
  GF_AC4_SSS(bs, p->dolby_atmos_indicator, 1, size, desc_mode);
  GF_AC4_SSS(bs, zero_val, 4, size, desc_mode);

  if (p->presentation_id > 31) {
    p->b_extended_presentation_id = 1;
    p->extended_presentation_id = p->presentation_id;
  }
  GF_AC4_SSS(bs, p->b_extended_presentation_id, 1, size, desc_mode);
  if (p->b_extended_presentation_id) {
    GF_AC4_SSS(bs, p->extended_presentation_id, 9, size, desc_mode);
  }
  else {
    GF_AC4_SSS(bs, zero_val, 1, size, desc_mode);
  }

  return GF_OK;
}

static void gf_odf_ac4_presentation_deep_copy(GF_AC4PresentationV1 *pres_dst, GF_AC4PresentationV1 *pres_src);

GF_Err gf_odf_ac4_cfg_dsi_v1(GF_AC4StreamInfo *dsi, GF_BitStream *bs, u64 *size, u8 desc_mode)
{
  u32 i, j, add_pres_bytes, presentation_bytes, skip_bytes, ims_pres_num = 0, legacy_pres_num = 0;
  u32 pres_bytes = 0, t_size_bytes = 0;
  GF_AC4PresentationV1* p = NULL, *imsp = NULL;
  u64 pos, t_size_bits = 0;
  u8 *t_data = NULL;
  GF_BitStream *t_bs;

  if (!dsi)
    return GF_BAD_PARAM;

  GF_AC4_SSS(bs, dsi->ac4_dsi_version, 3, size, desc_mode);
  GF_AC4_SSS(bs, dsi->bitstream_version, 7, size, desc_mode);
  GF_AC4_SSS(bs, dsi->fs_index, 1, size, desc_mode);
  GF_AC4_SSS(bs, dsi->frame_rate_index, 4, size, desc_mode);

  if (desc_mode == GF_AC4_DESCMODE_WRITE) {
    // check whether legacy presentations are added in the presentations
    for (i = 0; i < dsi->n_presentations; i++) {
      p = gf_list_get(dsi->presentations, i);
      if (!p) continue;
      if (p->presentation_version == 1) {
        legacy_pres_num += 1;
      } else if (p->presentation_version == 2) {
        ims_pres_num += 1;
      }
    }

    // In WRITE mode, modify n_presentations for IMS content and add legacy presentations
    // For more information, please read Dolby AC-4 Online Delivery Kit - Signaling immersive stereo content
    if (legacy_pres_num == 0 && ims_pres_num > 0) {
      GF_LOG(GF_LOG_INFO, GF_LOG_APP, ("[AC4] This is a Dolby AC-4 bitstreams signal immersive stereo content.\n"));

      for (i = 0; i < dsi->n_presentations; i++) {
        p = gf_list_get(dsi->presentations, i);
        if (!p) continue;
        if (p->presentation_version == 2) {
          GF_SAFEALLOC(imsp, GF_AC4PresentationV1);
          gf_odf_ac4_presentation_deep_copy(imsp, p);

          imsp->presentation_version = 1;
          imsp->b_pre_virtualized = 0;
          imsp->dolby_atmos_indicator = 0;
          gf_list_add(dsi->presentations, imsp);
        }
      }
      dsi->n_presentations += ims_pres_num;
    }
  }

  GF_AC4_SSS(bs, dsi->n_presentations, 9, size, desc_mode);
  if (dsi->bitstream_version > 1) {
    GF_AC4_SSS(bs, dsi->b_program_id, 1, size, desc_mode);
    if (dsi->b_program_id) {
      GF_AC4_SSS(bs, dsi->short_program_id, 16, size, desc_mode);
      GF_AC4_SSS(bs, dsi->b_uuid, 1, size, desc_mode);
      if (dsi->b_uuid) {
        for (i = 0; i < 16; i++)
          GF_AC4_SSS(bs, dsi->program_uuid[i], 8, size, desc_mode);
      }
    }
  }

  // ac4_bitrate_dsi
  gf_odf_ac4_cfg_bitrate_dsi(&dsi->ac4_bitrate_dsi, bs, size, desc_mode);
  GF_AC4_ALLIGN(bs, size, desc_mode);

  if (desc_mode == GF_AC4_DESCMODE_PARSE) {
    dsi->presentations = gf_list_new();
  }

  for (i = 0; i < dsi->n_presentations; i++) {
    if (desc_mode == GF_AC4_DESCMODE_PARSE) {
      GF_SAFEALLOC(p, GF_AC4PresentationV1);
      gf_list_add(dsi->presentations, p);

      p->presentation_version = gf_bs_read_int(bs, 8);
      pres_bytes = gf_bs_read_int(bs, 8);
      if (pres_bytes == 255) {
        add_pres_bytes = gf_bs_read_int(bs, 16);
        pres_bytes += add_pres_bytes;
      }

      pos = gf_bs_get_position(bs);

      if (p->presentation_version == 0) {
        GF_LOG(GF_LOG_ERROR, GF_LOG_APP, ("[AC4] Don't support presentation_version 0.\n"));
      } else if (p->presentation_version == 1) {
        gf_odf_ac4_cfg_presentation_v1_dsi(p, bs, size, desc_mode);
      } else if (p->presentation_version == 2) {
        gf_odf_ac4_cfg_presentation_v1_dsi(p, bs, size, desc_mode);
      }

      presentation_bytes = (u32) (gf_bs_get_position(bs) - pos);
      skip_bytes = pres_bytes - presentation_bytes;

      for (j = 0; j < skip_bytes && gf_bs_available(bs); j++) {
        gf_bs_read_int(bs, 8);
      }
    }
    else if (desc_mode == GF_AC4_DESCMODE_WRITE) {
      p = gf_list_get(dsi->presentations, i);
      if (!p) continue;

      t_bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
      if (p->presentation_version == 0) {
        GF_LOG(GF_LOG_ERROR, GF_LOG_APP, ("[AC4] Don't support presentation_version 0.\n"));
      } else if (p->presentation_version == 1 || p->presentation_version == 2) {
        gf_odf_ac4_cfg_presentation_v1_dsi(p, t_bs, size, desc_mode);
      }

      // write into output bitstream
      gf_bs_write_int(bs, p->presentation_version, 8);
      presentation_bytes = (u32) gf_bs_get_position(t_bs);
      if (presentation_bytes < 255) {
        gf_bs_write_int(bs, presentation_bytes, 8);
      } else {
        gf_bs_write_int(bs, 255, 8);
        gf_bs_write_int(bs, presentation_bytes - 255, 16);
      }
      gf_bs_get_content(t_bs, &t_data, &t_size_bytes);
      gf_bs_write_data(bs, t_data, t_size_bytes);

      gf_bs_del(t_bs);
      gf_free(t_data);
    }
    else if (desc_mode == GF_AC4_DESCMODE_GETSIZE) {
      p = gf_list_get(dsi->presentations, i);

      t_size_bits = 0; // t_size in bits
      if (p->presentation_version == 0) {
        GF_LOG(GF_LOG_ERROR, GF_LOG_APP, ("[AC4] Don't support presentation_version 0.\n"));
        return GF_OK;
      } else if (p->presentation_version == 1 || p->presentation_version == 2) {
        gf_odf_ac4_cfg_presentation_v1_dsi(p, bs, &t_size_bits, desc_mode);
      }

      if (t_size_bits < 255 * 8) {
        *size += (8 + 8 + t_size_bits);
      } else {
        *size += (8 + 8 + 16 + t_size_bits);
      }
    }
  }

  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_ac4_cfg_write_bs(GF_AC4Config *cfg, GF_BitStream *bs)
{
  if (!cfg || !bs) return GF_BAD_PARAM;
  GF_AC4StreamInfo* dsi = &cfg->stream;
  if (dsi->ac4_dsi_version == 0) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_APP, ("[AC4] Don't support ac4_dsi_version 0.\n"));
    return GF_OK;
  }
  GF_Err e = gf_odf_ac4_cfg_dsi_v1(dsi, bs, NULL, GF_AC4_DESCMODE_WRITE);
  return e;
}

GF_EXPORT
GF_Err gf_odf_ac4_cfg_write(GF_AC4Config *cfg, u8 **data, u32 *size)
{
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  GF_Err e = gf_odf_ac4_cfg_write_bs(cfg, bs);
  gf_bs_get_content(bs, data, size);
  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_Err gf_odf_ac4_cfg_parse_bs(GF_BitStream *bs, GF_AC4Config *cfg)
{
  GF_AC4StreamInfo* dsi = &cfg->stream;
  u64 pos = gf_bs_get_position(bs);
  dsi->ac4_dsi_version = gf_bs_read_int(bs, 3);
  if (dsi->ac4_dsi_version == 0) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_APP, ("[AC4] Don't support ac4_dsi_version 0.\n"));
    return GF_OK;
  }
  gf_bs_seek(bs, pos);
  GF_Err e = gf_odf_ac4_cfg_dsi_v1(dsi, bs, NULL, GF_AC4_DESCMODE_PARSE);
  if (e) return e;
  cfg->sample_rate = dsi->fs_index ? 48000 : 44100;
  return e;
}

GF_EXPORT
GF_Err gf_odf_ac4_cfg_parse(u8 *dsi, u32 dsi_len, GF_AC4Config *cfg)
{
  GF_BitStream *bs;
  GF_Err e;
  if (!cfg || !dsi) return GF_BAD_PARAM;
  bs = gf_bs_new(dsi, dsi_len, GF_BITSTREAM_READ);
  e = gf_odf_ac4_cfg_parse_bs(bs, cfg);
  gf_bs_del(bs);
  return e;
}

GF_EXPORT
u64 gf_odf_ac4_cfg_size(GF_AC4Config *cfg)
{
  GF_AC4StreamInfo* dsi = &cfg->stream;
  u64 size = 0;
  if (dsi->ac4_dsi_version == 0) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_APP, ("[AC4] Don't support ac4_dsi_version 0.\n"));
    return 0;
  } else {
    gf_odf_ac4_cfg_dsi_v1(dsi, NULL, &size, GF_AC4_DESCMODE_GETSIZE);
  }
  return size / 8;
}

GF_EXPORT
void gf_odf_ac4_cfg_deep_copy(GF_AC4Config *dst, GF_AC4Config *src)
{
  u32 i;
  GF_List *presentations_src = src->stream.presentations;
  GF_AC4PresentationV1 *pres_dst, *pres_src;

  if (!dst || !src) {
    return;
  }

  memcpy(dst, src, sizeof(GF_AC4Config));

  if (!src->stream.presentations) {
    return;
  }

  dst->stream.presentations = gf_list_new();
  for (i = 0; i < gf_list_count(presentations_src); i++) {
    pres_src = gf_list_get(presentations_src, i);

    GF_SAFEALLOC(pres_dst, GF_AC4PresentationV1);
    gf_odf_ac4_presentation_deep_copy(pres_dst, pres_src);
    gf_list_add(dst->stream.presentations, pres_dst);
  }
}

static void gf_odf_ac4_presentation_deep_copy(GF_AC4PresentationV1 *pres_dst, GF_AC4PresentationV1 *pres_src)
{
  u32 j, s;
  GF_AC4SubStreamGroupV1 *group_dst, *group_src;
  GF_AC4SubStream *subs_dst, *subs_src;

  if (!pres_dst || !pres_src) {
    return;
  }

  memcpy(pres_dst, pres_src, sizeof(GF_AC4PresentationV1));

  if (!pres_src->substream_groups) {
    return;
  }

  pres_dst->substream_groups = gf_list_new();
  for (j = 0; j < gf_list_count(pres_src->substream_groups); j++) {
    group_src = gf_list_get(pres_src->substream_groups, j);

    GF_SAFEALLOC(group_dst, GF_AC4SubStreamGroupV1);
    memcpy(group_dst, group_src, sizeof(GF_AC4SubStreamGroupV1));
    gf_list_add(pres_dst->substream_groups, group_dst);

    if (!group_src->substreams) {
      continue;
    }

    group_dst->substreams = gf_list_new();
    for (s = 0; s < gf_list_count(group_src->substreams); s++) {
      subs_src = gf_list_get(group_src->substreams, s);

      GF_SAFEALLOC(subs_dst, GF_AC4SubStream);
      memcpy(subs_dst, subs_src, sizeof(GF_AC4SubStream));
      gf_list_add(group_dst->substreams, subs_dst);
    }
  }
}

GF_EXPORT
void gf_odf_ac4_cfg_clean_list(GF_AC4Config *cfg)
{
  u32 s;
  GF_AC4PresentationV1 *pres;
  GF_AC4SubStreamGroupV1 *group;
  GF_AC4SubStream *subs;

  if (!cfg)
    return;


  if (cfg->stream.presentations) {

    GF_List* groups_to_del = gf_list_new();

    while ( (pres = gf_list_pop_back(cfg->stream.presentations)) ) {

      if (pres->substream_groups) {

        while ( (group = gf_list_pop_back(pres->substream_groups)) ) {

          if (group && gf_list_find(groups_to_del, group) < 0)
            gf_list_add(groups_to_del, group);

        }
        gf_list_del(pres->substream_groups);

      }
      gf_free(pres);
    }

    while ( (group = gf_list_pop_back(groups_to_del)) ) {
      if (group->substreams) {

        for (s = 0; s < gf_list_count(group->substreams); s++) {
          subs = gf_list_get(group->substreams, s);
          if (!subs) {
            continue;
          }

          gf_free(subs);
        }
        gf_list_del(group->substreams);

      }
      gf_free(group);

    }
    gf_list_del(groups_to_del);

    gf_list_del(cfg->stream.presentations);
    cfg->stream.presentations = NULL;
  }
}

GF_EXPORT
void gf_odf_ac4_cfg_del(GF_AC4Config *cfg)
{
  if (!cfg) return;
  gf_odf_ac4_cfg_clean_list(cfg);
  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_opus_cfg_parse_bs(GF_BitStream *bs, GF_OpusConfig *cfg)
{
  memset(cfg, 0, sizeof(GF_OpusConfig));
  cfg->version = gf_bs_read_u8(bs);
  cfg->OutputChannelCount = gf_bs_read_u8(bs);
  cfg->PreSkip = gf_bs_read_u16_le(bs);
  cfg->InputSampleRate = gf_bs_read_u32_le(bs);
  cfg->OutputGain = gf_bs_read_u16_le(bs);
  cfg->ChannelMappingFamily = gf_bs_read_u8(bs);
  if (cfg->ChannelMappingFamily) {
    cfg->StreamCount = gf_bs_read_u8(bs);
    cfg->CoupledCount = gf_bs_read_u8(bs);
    gf_bs_read_data(bs, (char *) cfg->ChannelMapping, cfg->OutputChannelCount);
  }
  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_opus_cfg_parse(u8 *dsi, u32 dsi_len, GF_OpusConfig *cfg)
{
  GF_BitStream *bs;
  GF_Err e;
  if (!cfg || !dsi) return GF_BAD_PARAM;
  bs = gf_bs_new(dsi, dsi_len, GF_BITSTREAM_READ);
  e = gf_odf_opus_cfg_parse_bs(bs, cfg);
  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_Err gf_odf_opus_cfg_write_bs(GF_OpusConfig *cfg, GF_BitStream *bs)
{
  if (!cfg || !bs) return GF_BAD_PARAM;
  gf_bs_write_u8(bs, cfg->version);
  gf_bs_write_u8(bs, cfg->OutputChannelCount);
  gf_bs_write_u16_le(bs, cfg->PreSkip);
  gf_bs_write_u32_le(bs, cfg->InputSampleRate);
  gf_bs_write_u16_le(bs, cfg->OutputGain);
  gf_bs_write_u8(bs, cfg->ChannelMappingFamily);
  if (cfg->ChannelMappingFamily) {
    gf_bs_write_u8(bs, cfg->StreamCount);
    gf_bs_write_u8(bs, cfg->CoupledCount);
    gf_bs_write_data(bs, (char *) cfg->ChannelMapping, cfg->OutputChannelCount);
  }
  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_opus_cfg_write(GF_OpusConfig *cfg, u8 **data, u32 *size)
{
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  GF_Err e = gf_odf_opus_cfg_write_bs(cfg, bs);

  gf_bs_get_content(bs, data, size);
  gf_bs_del(bs);
  return e;
}

GF_EXPORT
GF_IAConfig *gf_odf_iamf_cfg_new()
{
  GF_IAConfig *cfg = NULL;
  GF_SAFEALLOC(cfg, GF_IAConfig);
  if (!cfg) return NULL;
  cfg->configurationVersion = 1;
  cfg->configOBUs_size = 0;
  cfg->configOBUs = gf_list_new();
  if (!cfg->configOBUs) {
    gf_free(cfg);
    return NULL;
  }
  return cfg;
}

GF_EXPORT
GF_IAConfig *gf_odf_iamf_cfg_read_bs_size(GF_BitStream *bs, u32 size) {
#ifndef GPAC_DISABLE_AV_PARSERS
  IAMFState *state = NULL;
  GF_IAConfig *cfg = NULL;
  u8 leb128_size;

  if (!size) size = (u32) gf_bs_available(bs);
  if (!size) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[IAMF] Unknown IAConfigurationBox size to read\n"));
    return NULL;
  }

  GF_SAFEALLOC(state, IAMFState);
  if (!state) return NULL;
  cfg = gf_odf_iamf_cfg_new();
  gf_iamf_init_state(state);

  cfg->configurationVersion = gf_bs_read_u8(bs);
  if (cfg->configurationVersion != 1) {
    GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[IAMF] Unknown configurationVersion %d\n", cfg->configurationVersion));
    gf_odf_iamf_cfg_del(cfg);
    gf_free(state);
    return NULL;
  }
  size--;

  cfg->configOBUs_size = (u32)gf_av1_leb128_read(bs, &leb128_size);
  size -= leb128_size;

  while(size) {
    u64 pos, obu_size;
    IamfObuType obu_type;
    GF_IamfObu *config_obu;

    pos = gf_bs_get_position(bs);
    obu_size = 0;
    if (gf_iamf_parse_obu(bs, &obu_type, &obu_size, state) != GF_OK) {
      GF_LOG(GF_LOG_ERROR, GF_LOG_CODING, ("[IAMF] could not parse configOBUs at position "LLU". Leaving parsing.\n", pos));
      break;
    }
    gf_assert(obu_size == gf_bs_get_position(bs) - pos);
    GF_LOG(GF_LOG_DEBUG, GF_LOG_CODING, ("[IAMF] parsed OBU type=%u size="LLU" at position "LLU".\n", obu_type, obu_size, pos));

    GF_SAFEALLOC(config_obu, GF_IamfObu);
    if (!config_obu) break;
    config_obu->raw_obu_bytes = gf_malloc((size_t)obu_size);
    if (!config_obu->raw_obu_bytes) {
      gf_free(config_obu);
      break;
    }
    gf_bs_seek(bs, pos);
    gf_bs_read_data(bs, (char *)config_obu->raw_obu_bytes, (u32)obu_size);
    config_obu->obu_length = obu_size;
    config_obu->obu_type = obu_type;
    gf_list_add(cfg->configOBUs, config_obu);

    if (size < obu_size) {
      GF_LOG(GF_LOG_WARNING, GF_LOG_CODING, ("[IAMF] IAMF config misses %d bytes to fit the entire OBU\n", obu_size - size));
      break;
    }
    size -= (u32) obu_size;
  }

  gf_iamf_reset_state(state, GF_TRUE);
  gf_bs_align(bs);
  gf_free(state);
  return cfg;
#else
  return NULL;
#endif
}

GF_EXPORT
GF_IAConfig *gf_odf_iamf_cfg_read_bs(GF_BitStream *bs) {
  return gf_odf_iamf_cfg_read_bs_size(bs, 0);
}

GF_EXPORT
GF_IAConfig *gf_odf_iamf_cfg_read(u8 *dsi, u32 dsi_size)
{
  GF_BitStream *bs = gf_bs_new(dsi, dsi_size, GF_BITSTREAM_READ);
  GF_IAConfig *cfg = gf_odf_iamf_cfg_read_bs(bs);
  gf_bs_del(bs);
  return cfg;
}

GF_EXPORT
void gf_odf_iamf_cfg_del(GF_IAConfig *cfg)
{
  if (!cfg) return;
  while (gf_list_count(cfg->configOBUs)) {
    GF_IamfObu *configOBU = (GF_IamfObu*)gf_list_get(cfg->configOBUs, 0);
    if (configOBU->raw_obu_bytes) gf_free(configOBU->raw_obu_bytes);
    gf_list_rem(cfg->configOBUs, 0);
    gf_free(configOBU);
  }
  gf_list_del(cfg->configOBUs);
  gf_free(cfg);
}

GF_EXPORT
GF_Err gf_odf_iamf_cfg_write_bs(GF_IAConfig *cfg, GF_BitStream *bs)
{
  u32 i;
  if (!cfg || !bs) return GF_BAD_PARAM;

  #ifndef GPAC_DISABLE_AV_PARSERS
    gf_bs_write_u8(bs, cfg->configurationVersion);
    gf_av1_leb128_write(bs, cfg->configOBUs_size);
    for (i = 0; i < gf_list_count(cfg->configOBUs); ++i) {
        GF_IamfObu *configOBU = gf_list_get(cfg->configOBUs, i);
        gf_bs_write_data(bs, configOBU->raw_obu_bytes, (u32)configOBU->obu_length);
    }
  #endif

  return GF_OK;
}

GF_EXPORT
GF_Err gf_odf_iamf_cfg_write(GF_IAConfig *cfg, u8 **outData, u32 *outSize) {
  GF_Err e;
  GF_BitStream *bs = gf_bs_new(NULL, 0, GF_BITSTREAM_WRITE);
  *outSize = 0;
  *outData = NULL;
  e = gf_odf_iamf_cfg_write_bs(cfg, bs);
  if (e == GF_OK)
    gf_bs_get_content(bs, outData, outSize);

  gf_bs_del(bs);
  return e;
}

GF_EXPORT
u32 gf_odf_iamf_cfg_size(GF_IAConfig *cfg)
{
  if (!cfg) return 0;

  #ifndef GPAC_DISABLE_AV_PARSERS
    u32 cfg_size = 1; // configurationVersion
    cfg_size += gf_av1_leb128_size(cfg->configOBUs_size);
    cfg_size += cfg->configOBUs_size;
    return cfg_size;
  #else
    return 0;
  #endif
}

Coverage Report

Created: 2026-01-25 07:15