Exemplo n.º 1
0
static void
flx_decode_chunks (GstFlxDec * flxdec, gulong count, guchar * data,
    guchar * dest)
{
  FlxFrameChunk *hdr;

  g_return_if_fail (data != NULL);

  while (count--) {
    hdr = (FlxFrameChunk *) data;
    FLX_FRAME_CHUNK_FIX_ENDIANNESS (hdr);
    data += FlxFrameChunkSize;

    switch (hdr->id) {
      case FLX_COLOR64:
        flx_decode_color (flxdec, data, dest, 2);
        data += rndalign (hdr->size) - FlxFrameChunkSize;
        break;

      case FLX_COLOR256:
        flx_decode_color (flxdec, data, dest, 0);
        data += rndalign (hdr->size) - FlxFrameChunkSize;
        break;

      case FLX_BRUN:
        flx_decode_brun (flxdec, data, dest);
        data += rndalign (hdr->size) - FlxFrameChunkSize;
        break;

      case FLX_LC:
        flx_decode_delta_fli (flxdec, data, dest);
        data += rndalign (hdr->size) - FlxFrameChunkSize;
        break;

      case FLX_SS2:
        flx_decode_delta_flc (flxdec, data, dest);
        data += rndalign (hdr->size) - FlxFrameChunkSize;
        break;

      case FLX_BLACK:
        memset (dest, 0, flxdec->size);
        break;

      case FLX_MINI:
        data += rndalign (hdr->size) - FlxFrameChunkSize;
        break;

      default:
        GST_WARNING ("Unimplented chunk type: 0x%02x size: %d - skipping",
            hdr->id, hdr->size);
        data += rndalign (hdr->size) - FlxFrameChunkSize;
        break;
    }
  }
}
Exemplo n.º 2
0
static gboolean
flx_decode_chunks (GstFlxDec * flxdec, gulong n_chunks, GstByteReader * reader,
    GstByteWriter * writer)
{
  gboolean ret = TRUE;

  while (n_chunks--) {
    GstByteReader chunk;
    guint32 size;
    guint16 type;

    if (!gst_byte_reader_get_uint32_le (reader, &size))
      goto parse_error;
    if (!gst_byte_reader_get_uint16_le (reader, &type))
      goto parse_error;
    GST_LOG_OBJECT (flxdec, "chunk has type 0x%02x size %d", type, size);

    if (!gst_byte_reader_get_sub_reader (reader, &chunk,
            size - FlxFrameChunkSize)) {
      GST_ERROR_OBJECT (flxdec, "Incorrect size in the chunk header");
      goto error;
    }

    switch (type) {
      case FLX_COLOR64:
        ret = flx_decode_color (flxdec, &chunk, writer, 2);
        break;

      case FLX_COLOR256:
        ret = flx_decode_color (flxdec, &chunk, writer, 0);
        break;

      case FLX_BRUN:
        ret = flx_decode_brun (flxdec, &chunk, writer);
        break;

      case FLX_LC:
        ret = flx_decode_delta_fli (flxdec, &chunk, writer);
        break;

      case FLX_SS2:
        ret = flx_decode_delta_flc (flxdec, &chunk, writer);
        break;

      case FLX_BLACK:
        ret = gst_byte_writer_fill (writer, 0, flxdec->size);
        break;

      case FLX_MINI:
        break;

      default:
        GST_WARNING ("Unimplemented chunk type: 0x%02x size: %d - skipping",
            type, size);
        break;
    }

    if (!ret)
      break;
  }

  return ret;

parse_error:
  GST_ERROR_OBJECT (flxdec, "Failed to decode chunk");
error:
  return FALSE;
}