C++ (Cpp) is_two_pass_svc Examples

Example #1

File: vp9_svc_layercontext.c Project: wangdangpeng/libvpx

int vp9_is_upper_layer_key_frame(const VP9_COMP *const cpi) {
  return is_two_pass_svc(cpi) &&
         cpi->svc.spatial_layer_id > 0 &&
         cpi->svc.layer_context[cpi->svc.spatial_layer_id *
                                cpi->svc.number_temporal_layers +
                                cpi->svc.temporal_layer_id].is_key_frame;
}

Example #2

File: vp9_svc_layercontext.c Project: wangdangpeng/libvpx

void vp9_restore_layer_context(VP9_COMP *const cpi) {
  LAYER_CONTEXT *const lc = get_layer_context(cpi);
  const int old_frame_since_key = cpi->rc.frames_since_key;
  const int old_frame_to_key = cpi->rc.frames_to_key;

  cpi->rc = lc->rc;
  cpi->twopass = lc->twopass;
  cpi->oxcf.target_bandwidth = lc->target_bandwidth;
  cpi->alt_ref_source = lc->alt_ref_source;
  // Reset the frames_since_key and frames_to_key counters to their values
  // before the layer restore. Keep these defined for the stream (not layer).
  if (cpi->svc.number_temporal_layers > 1 ||
      (cpi->svc.number_spatial_layers > 1 && !is_two_pass_svc(cpi))) {
    cpi->rc.frames_since_key = old_frame_since_key;
    cpi->rc.frames_to_key = old_frame_to_key;
  }

  // For spatial-svc, allow cyclic-refresh to be applied on the spatial layers,
  // for the base temporal layer.
  if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ &&
      cpi->svc.number_spatial_layers > 1 &&
      cpi->svc.temporal_layer_id == 0) {
    CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;
    signed char *temp = cr->map;
    uint8_t *temp2 = cr->last_coded_q_map;
    uint8_t *temp3 = cpi->consec_zero_mv;
    cr->map = lc->map;
    lc->map = temp;
    cr->last_coded_q_map = lc->last_coded_q_map;
    lc->last_coded_q_map = temp2;
    cpi->consec_zero_mv = lc->consec_zero_mv;
    lc->consec_zero_mv = temp3;
    cr->sb_index = lc->sb_index;
  }
}

Example #3

File: vp9_bitstream.c Project: george-hopkins/pkg-webrtc

static void write_frame_size_with_refs(VP9_COMP *cpi,
                                       struct vpx_write_bit_buffer *wb) {
  VP9_COMMON *const cm = &cpi->common;
  int found = 0;

  MV_REFERENCE_FRAME ref_frame;
  for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {
    YV12_BUFFER_CONFIG *cfg = get_ref_frame_buffer(cpi, ref_frame);

    // Set "found" to 0 for temporal svc and for spatial svc key frame
    if (cpi->use_svc &&
        ((cpi->svc.number_temporal_layers > 1 &&
         cpi->oxcf.rc_mode == VPX_CBR) ||
        (cpi->svc.number_spatial_layers > 1 &&
         cpi->svc.layer_context[cpi->svc.spatial_layer_id].is_key_frame) ||
        (is_two_pass_svc(cpi) &&
         cpi->svc.encode_empty_frame_state == ENCODING &&
         cpi->svc.layer_context[0].frames_from_key_frame <
         cpi->svc.number_temporal_layers + 1))) {
      found = 0;
    } else if (cfg != NULL) {
      found = cm->width == cfg->y_crop_width &&
              cm->height == cfg->y_crop_height;
    }
    vpx_wb_write_bit(wb, found);
    if (found) {
      break;
    }
  }

  if (!found) {
    vpx_wb_write_literal(wb, cm->width - 1, 16);
    vpx_wb_write_literal(wb, cm->height - 1, 16);
  }

  write_render_size(cm, wb);
}