C++ (Cpp) vp9_get_tile_n_bits Beispiele

Beispiel #1

Datei: vp9_ethread.c Projekt: thedmd/libvpx

static int get_max_tile_cols(VP9_COMP *cpi) {
  const int aligned_width = ALIGN_POWER_OF_TWO(cpi->oxcf.width, MI_SIZE_LOG2);
  int mi_cols = aligned_width >> MI_SIZE_LOG2;
  int min_log2_tile_cols, max_log2_tile_cols;
  int log2_tile_cols;

  vp9_get_tile_n_bits(mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);
  log2_tile_cols = clamp(cpi->oxcf.tile_columns,
                   min_log2_tile_cols, max_log2_tile_cols);
  return (1 << log2_tile_cols);
}

Beispiel #2

Datei: vp9_bitstream.c Projekt: george-hopkins/pkg-webrtc

static void write_tile_info(const VP9_COMMON *const cm,
                            struct vpx_write_bit_buffer *wb) {
  int min_log2_tile_cols, max_log2_tile_cols, ones;
  vp9_get_tile_n_bits(cm->mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);

  // columns
  ones = cm->log2_tile_cols - min_log2_tile_cols;
  while (ones--)
    vpx_wb_write_bit(wb, 1);

  if (cm->log2_tile_cols < max_log2_tile_cols)
    vpx_wb_write_bit(wb, 0);

  // rows
  vpx_wb_write_bit(wb, cm->log2_tile_rows != 0);
  if (cm->log2_tile_rows != 0)
    vpx_wb_write_bit(wb, cm->log2_tile_rows != 1);
}

Beispiel #3

Datei: vp9_ethread.c Projekt: wolfviking0/webcl-webkit

static int get_max_tile_cols(VP9_COMP *cpi) {
  const int aligned_width = ALIGN_POWER_OF_TWO(cpi->oxcf.width, MI_SIZE_LOG2);
  int mi_cols = aligned_width >> MI_SIZE_LOG2;
  int min_log2_tile_cols, max_log2_tile_cols;
  int log2_tile_cols;

  vp9_get_tile_n_bits(mi_cols, &min_log2_tile_cols, &max_log2_tile_cols);
  log2_tile_cols =
      clamp(cpi->oxcf.tile_columns, min_log2_tile_cols, max_log2_tile_cols);
  if (cpi->oxcf.target_level == LEVEL_AUTO) {
    const int level_tile_cols =
        log_tile_cols_from_picsize_level(cpi->common.width, cpi->common.height);
    if (log2_tile_cols > level_tile_cols) {
      log2_tile_cols = VPXMAX(level_tile_cols, min_log2_tile_cols);
    }
  }
  return (1 << log2_tile_cols);
}