mp4info.cpp

6410BSP1

        "MPEG-2 SNR",
        "MPEG-2 Spatial",
        "MPEG-2 High",
        "MPEG-2 4:2:2",
        "MPEG-1",
        "JPEG",
        "YUV12",
        "H.263",
        "H.261",
    };
    u_int8_t numMpegVideoTypes =
        sizeof(mpegVideoTypes) / sizeof(u_int8_t);
    bool foundTypeName = false;
    const char* typeName = "Unknown";

    const char *media_data_name;
    uint8_t type = 0;
    
    media_data_name = MP4GetTrackMediaDataName(mp4File, trackId);
    char  typebuffer[80];
    if (media_data_name == NULL) {
      typeName = "Unknown - no media data name";
      foundTypeName = true;
    } else if (strcasecmp(media_data_name, "avc1") == 0) {
      // avc
      uint8_t profile, level;
      char profileb[20], levelb[20];
      if (MP4GetTrackH264ProfileLevel(mp4File, trackId, 
                      &profile, &level)) {
        if (profile == 66) {
          strcpy(profileb, "Baseline");
        } else if (profile == 77) {
          strcpy(profileb, "Main");
        } else if (profile == 88) {
          strcpy(profileb, "Extended");
        } else if (profile == 100) {
          strcpy(profileb, "High");
        } else if (profile == 110) {
          strcpy(profileb, "High 10");
        } else if (profile == 122) {
          strcpy(profileb, "High 4:2:2");
        } else if (profile == 144) {
          strcpy(profileb, "High 4:4:4");
        } else {
          sprintf(profileb, "Unknown Profile %x", profile);
        } 
        switch (level) {
        case 10: case 20: case 30: case 40: case 50:
          sprintf(levelb, "%u", level / 10);
          break;
        case 11: case 12: case 13:
        case 21: case 22:
        case 31: case 32:
        case 41: case 42:
        case 51:
          sprintf(levelb, "%u.%u", level / 10, level % 10);
          break;
        default:
          sprintf(levelb, "unknown level %x", level);
          break;
        }
        sprintf(typebuffer, "H264 %s@%s", profileb, levelb);
        typeName = typebuffer;
      } else {
        typeName = "H.264 - profile/level error";
      }
      foundTypeName = true;
    } else if (strcasecmp(media_data_name, "s263") == 0) {
      // 3gp h.263
      typeName = "H.263";
      foundTypeName = true;
    } else if ((strcasecmp(media_data_name, "mp4v") == 0) ||
           (strcasecmp(media_data_name, "encv") == 0)) {
      // note encv might needs it's own field eventually.
      type = MP4GetTrackEsdsObjectTypeId(mp4File, trackId);
      if (type == MP4_MPEG4_VIDEO_TYPE) {
        type = MP4GetVideoProfileLevel(mp4File, trackId);
        typeName = Mpeg4VisualProfileName(type);
        if (typeName == NULL) {
          typeName = "MPEG-4 Unknown Profile";
        } else {
          foundTypeName = true;
        }
      } else {
        for (u_int8_t i = 0; i < numMpegVideoTypes; i++) {
          if (type == mpegVideoTypes[i]) {
        typeName = mpegVideoNames[i];
        foundTypeName = true;
        break;
          }
        }
      }
    } else {
      typeName = media_data_name;
      foundTypeName = true; // we don't have a type value to display
    }

    MP4Duration trackDuration =
        MP4GetTrackDuration(mp4File, trackId);

    double msDuration =
        UINT64_TO_DOUBLE(MP4ConvertFromTrackDuration(mp4File, trackId,
            trackDuration, MP4_MSECS_TIME_SCALE));

    u_int32_t avgBitRate =
        MP4GetTrackBitRate(mp4File, trackId);

    // Note not all mp4 implementations set width and height correctly
    // The real answer can be buried inside the ES configuration info
    u_int16_t width = MP4GetTrackVideoWidth(mp4File, trackId);

    u_int16_t height = MP4GetTrackVideoHeight(mp4File, trackId);

    double fps = MP4GetTrackVideoFrameRate(mp4File, trackId);

    char *sInfo = (char*)MP4Malloc(256);

    // type duration avgBitrate frameSize frameRate
    if (foundTypeName) {
      sprintf(sInfo,
          "%u\tvideo\t%s%s, %.3f secs, %u kbps, %ux%u @ %f fps\n",
          trackId,
          MP4IsIsmaCrypMediaTrack(mp4File, trackId) ? "encv - " : "",
          typeName,
          msDuration / 1000.0,
          (avgBitRate + 500) / 1000,
          width,
          height,
          fps
          );
    } else {
      sprintf(sInfo,
          "%u\tvideo\t%s(%u), %.3f secs, %u kbps, %ux%u @ %f fps\n",
          trackId,
          typeName,
          type, 
          msDuration / 1000.0,
          (avgBitRate + 500) / 1000,
          width,
          height,
          fps
          );
    }

    return sInfo;
}
static char* PrintCntlInfo(
    MP4FileHandle mp4File,
    MP4TrackId trackId)
{
  const char *media_data_name = MP4GetTrackMediaDataName(mp4File, trackId);
  const char *typeName = "Unknown";

  if (media_data_name == NULL) {
    typeName = "Unknown - no media data name";
  } else if (strcasecmp(media_data_name, "href") == 0) {
    typeName = "ISMA Href";
  } else {
    typeName = media_data_name;
  }

  MP4Duration trackDuration = 
    MP4GetTrackDuration(mp4File, trackId);
 
  double msDuration = 
    UINT64_TO_DOUBLE(MP4ConvertFromTrackDuration(mp4File, trackId, 
                         trackDuration, MP4_MSECS_TIME_SCALE));
  char *sInfo = (char *)MP4Malloc(256);

  snprintf(sInfo, 256,
       "%u\tcontrol\t%s, %.3f secs\n",
       trackId, 
       typeName,
       msDuration / 1000.0);
  return sInfo;
}

      
static char* PrintHintInfo(
    MP4FileHandle mp4File,
    MP4TrackId trackId)
{
    MP4TrackId referenceTrackId =
        MP4GetHintTrackReferenceTrackId(mp4File, trackId);

    char* payloadName = NULL;
    MP4GetHintTrackRtpPayload(mp4File, trackId, &payloadName);

    char *sInfo = (char*)MP4Malloc(256);

    sprintf(sInfo,
        "%u\thint\tPayload %s for track %u\n",
        trackId,
        payloadName,
        referenceTrackId);

    free(payloadName);

    return sInfo;
}

static char* PrintTrackInfo(
    MP4FileHandle mp4File,
    MP4TrackId trackId)
{
    char* trackInfo = NULL;

    const char* trackType =
        MP4GetTrackType(mp4File, trackId);

    if (!strcmp(trackType, MP4_AUDIO_TRACK_TYPE)) {
        trackInfo = PrintAudioInfo(mp4File, trackId);
    } else if (!strcmp(trackType, MP4_VIDEO_TRACK_TYPE)) {
        trackInfo = PrintVideoInfo(mp4File, trackId);
    } else if (!strcmp(trackType, MP4_HINT_TRACK_TYPE)) {
        trackInfo = PrintHintInfo(mp4File, trackId);
    } else if (strcmp(trackType, MP4_CNTL_TRACK_TYPE) == 0) {
      trackInfo = PrintCntlInfo(mp4File, trackId);
    } else {
        trackInfo = (char*)MP4Malloc(256);
        if (!strcmp(trackType, MP4_OD_TRACK_TYPE)) {
            sprintf(trackInfo,
                "%u\tod\tObject Descriptors\n",
                trackId);
        } else if (!strcmp(trackType, MP4_SCENE_TRACK_TYPE)) {
            sprintf(trackInfo,
                "%u\tscene\tBIFS\n",
                trackId);
        } else {
            sprintf(trackInfo,
                    "%u\t%s\n",
                    trackId, trackType);
        }
    }

    return trackInfo;
}

extern "C" char* MP4Info(
    MP4FileHandle mp4File,
    MP4TrackId trackId)
{
    char* info = NULL;

    if (MP4_IS_VALID_FILE_HANDLE(mp4File)) {
        __try {
            if (trackId == MP4_INVALID_TRACK_ID) {
                info = (char*)MP4Calloc(4*1024);

                sprintf(info, "Track\tType\tInfo\n");

                u_int32_t numTracks = MP4GetNumberOfTracks(mp4File);

                for (u_int32_t i = 0; i < numTracks; i++) {
                    trackId = MP4FindTrackId(mp4File, i);
                    char* trackInfo = PrintTrackInfo(mp4File, trackId);
                    strcat(info, trackInfo);
                    MP4Free(trackInfo);
                }
            } else {
                info = PrintTrackInfo(mp4File, trackId);
            }
        }
        __except (EXCEPTION_EXECUTE_HANDLER) {
//            delete e;
        }
    }

    return info;
}

extern "C" char* MP4FileInfo(
    const char* fileName,
    MP4TrackId trackId)
{
    MP4FileHandle mp4File =
        MP4Read(fileName);

    if (!mp4File) {
        return NULL;
    }

    char* info = MP4Info(mp4File, trackId);

    MP4Close(mp4File);

    return info;    // caller should free this
}