mp4_parser_stbl.c

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/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2005
*
*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
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*  AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
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*  THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
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/*******************************************************************************
 *
 * Filename:
 * ---------
 * mp4_parser_stbl.c
 *
 * Project:
 * --------
 *   MAUI
 *
 * Description:
 * ------------
 *   MPEG-4 Parser, sample table related functions.
 *
 * Author:
 * -------
 * -------
 *
 *==============================================================================
 *             HISTORY
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 *******************************************************************************/


#include "mp4_parser.h"

static MP4_Parser_Status MP4_STTS_ProcCacheTableByTrack( STMp4Parser *pstMp4Parser, MP4_Track_Type eTrackType, kal_uint16 uCount );
static MP4_Parser_Status MP4_STSS_ProcCacheTableByTrack( STMp4Parser *pstMp4Parser, MP4_Track_Type eTrackType, kal_uint32 uCount );

/*******************************************************************************
   Get the track index number with respect to the specified track type.
*******************************************************************************/
static MP4_Parser_Status MP4_GetTrackNoByType(STMp4Parser *pstMp4Parser, MP4_Track_Type eTrackType, kal_uint8 *pbTrackNo)
{
   MP4_PARSER_CHECK_ARG(pstMp4Parser!=NULL);
   MP4_PARSER_CHECK_ARG(pbTrackNo!=NULL);

   if (MP4_TRACK_AUDIO == eTrackType) {
      *pbTrackNo = pstMp4Parser->bAudioTrack;
   } else if (MP4_TRACK_VIDEO == eTrackType) {
      *pbTrackNo = pstMp4Parser->bVideoTrack;
   } else {
      return MP4_PARSER_NO_SUCH_TRACK;
   }
   /// Note: the initial value of bAudioTrack or bVideoTrack is MP4_RESERVED_TRACK_NO.
   if (MP4_RESERVED_TRACK_NO == *pbTrackNo)
      return MP4_PARSER_NO_SUCH_TRACK;

   return MP4_PARSER_OK;
}



/* --------------------- Media Header related functions --------------------- */

/*******************************************************************************
   Get the media time scale with respect to the specified track type.
*******************************************************************************/
MP4_Parser_Status MP4_GetMediaTimeScale(STMp4Parser *pstMp4Parser, kal_uint32 *puTimeScale, MP4_Track_Type eTrackType)
{
   MP4_Parser_Status ret;
   kal_uint8 bTrackNo;

   MP4_PARSER_CHECK_ARG(pstMp4Parser!=NULL);
   MP4_PARSER_CHECK_ARG(puTimeScale!=NULL);

   if ((ret=MP4_GetTrackNoByType(pstMp4Parser, eTrackType, &bTrackNo))!=MP4_PARSER_OK)
      return ret;

   *puTimeScale = pstMp4Parser->stMp4Track[bTrackNo].uMediaTimeScale;

   return MP4_PARSER_OK;
}

/*******************************************************************************
   Get the duration with respect to the specified track type.
*******************************************************************************/
MP4_Parser_Status MP4_GetMediaDuration(STMp4Parser *pstMp4Parser, kal_uint32 *puDuration, MP4_Track_Type eTrackType)
{
   MP4_Parser_Status ret;
   kal_uint8 bTrackNo;

   MP4_PARSER_CHECK_ARG(pstMp4Parser!=NULL);
   MP4_PARSER_CHECK_ARG(puDuration!=NULL);

   if ((ret=MP4_GetTrackNoByType(pstMp4Parser, eTrackType, &bTrackNo))!=MP4_PARSER_OK)
      return ret;

   *puDuration = pstMp4Parser->stMp4Track[bTrackNo].uMediaDuration;

   return MP4_PARSER_OK;
}



/* --------------------- Sample Size Table related functions --------------------- */

/*******************************************************************************
   Get the sample count of the specified track.
*******************************************************************************/
MP4_Parser_Status MP4_GetSampleCount(STMp4Parser *pstMp4Parser, MP4_Track_Type eTrackType, kal_uint32 *puSampleCount)
{
   MP4_Parser_Status ret;
   kal_uint8 bTrackNo;

   MP4_PARSER_CHECK_ARG(pstMp4Parser!=NULL);
   MP4_PARSER_CHECK_ARG(puSampleCount!=NULL);

   if ((ret=MP4_GetTrackNoByType(pstMp4Parser, eTrackType, &bTrackNo))!=MP4_PARSER_OK)
      return ret;

   *puSampleCount = pstMp4Parser->stMp4Track[bTrackNo].uSampleCount;

   return MP4_PARSER_OK;
}

/*******************************************************************************
   Get the sample size of the specified sample in the specified track.
*******************************************************************************/
MP4_Parser_Status MP4_GetSampleSize(STMp4Parser *pstMp4Parser, kal_uint32 uSampleNo,
                                    kal_uint32 *puSampleSize, MP4_Track_Type eTrackType)
{
   MP4_Parser_Status ret;
   kal_uint8 bTrackNo;
   STFSAL *pstFSAL_STSZ;

   MP4_PARSER_CHECK_ARG(pstMp4Parser!=NULL);
   MP4_PARSER_CHECK_ARG(puSampleSize!=NULL);

   if ((ret=MP4_GetTrackNoByType(pstMp4Parser, eTrackType, &bTrackNo))!=MP4_PARSER_OK)
      return ret;

   *puSampleSize = pstMp4Parser->stMp4Track[bTrackNo].uConstantSampleSize;
   pstFSAL_STSZ = pstMp4Parser->stMp4Track[bTrackNo].pstFSAL_STSZ;

   if (*puSampleSize != 0) {
      return MP4_PARSER_OK;
   } else {
      kal_uint32 uOffset;
      MP4_PARSER_ASSERT(uSampleNo<pstMp4Parser->stMp4Track[bTrackNo].uSampleCount);
      uOffset = pstMp4Parser->stMp4Track[bTrackNo].uOffsetSampleSizeTable;
      uOffset += (uSampleNo * 4);
      if ((pstMp4Parser->eFSALErr=FSAL_Seek(pstFSAL_STSZ, uOffset))!=FSAL_OK)
         return MP4_PARSER_FILE_SEEK_ERROR;
      if ((pstMp4Parser->eFSALErr=FSAL_Read_UINT(pstFSAL_STSZ, puSampleSize))!=FSAL_OK)
         return MP4_PARSER_FILE_READ_ERROR;

      return MP4_PARSER_OK;
   }
}



/* --------------------- Chunk Offset Table related functions --------------------- */

/*******************************************************************************
   Get the number of chunks in the specified track.
*******************************************************************************/
MP4_Parser_Status MP4_GetChunkCount(STMp4Parser *pstMp4Parser, MP4_Track_Type eTrackType, kal_uint32 *puChunkCount)
{
   MP4_Parser_Status ret;
   kal_uint8 bTrackNo;

   MP4_PARSER_CHECK_ARG(pstMp4Parser!=NULL);
   MP4_PARSER_CHECK_ARG(puChunkCount!=NULL);

   if ((ret=MP4_GetTrackNoByType(pstMp4Parser, eTrackType, &bTrackNo))!=MP4_PARSER_OK)
      return ret;

   *puChunkCount = pstMp4Parser->stMp4Track[bTrackNo].uChunkCount;

   return MP4_PARSER_OK;
}

/*******************************************************************************
   Get the number of chunks in the specified track.
*******************************************************************************/
static MP4_Parser_Status MP4_GetChunkOffset(STMp4Parser *pstMp4Parser, kal_uint32 uChunkNo,
                                            kal_uint32 *puChunkOffset, MP4_Track_Type type)
{
   MP4_Parser_Status ret;