コード例 #1
0
ファイル: vp9_encodemb.c プロジェクト: anantgarg/webrtc-ios-1
static void encode_block(int plane, int block, BLOCK_SIZE plane_bsize,
                         TX_SIZE tx_size, void *arg) {
  struct encode_b_args *const args = arg;
  MACROBLOCK *const x = args->x;
  MACROBLOCKD *const xd = &x->e_mbd;
  struct optimize_ctx *const ctx = args->ctx;
  struct macroblock_plane *const p = &x->plane[plane];
  struct macroblockd_plane *const pd = &xd->plane[plane];
  int16_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
  int i, j;
  uint8_t *dst;
  txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &i, &j);
  dst = &pd->dst.buf[4 * j * pd->dst.stride + 4 * i];

  // TODO(jingning): per transformed block zero forcing only enabled for
  // luma component. will integrate chroma components as well.
  if (x->zcoeff_blk[tx_size][block] && plane == 0) {
    p->eobs[block] = 0;
    ctx->ta[plane][i] = 0;
    ctx->tl[plane][j] = 0;
    return;
  }

  if (!x->skip_recode)
    vp9_xform_quant(x, plane, block, plane_bsize, tx_size);

  if (x->optimize && (!x->skip_recode || !x->skip_optimize)) {
    optimize_b(plane, block, plane_bsize, tx_size, x, ctx);
  } else {
    ctx->ta[plane][i] = p->eobs[block] > 0;
    ctx->tl[plane][j] = p->eobs[block] > 0;
  }

  if (p->eobs[block])
    *(args->skip) = 0;

  if (x->skip_encode || p->eobs[block] == 0)
    return;

  switch (tx_size) {
    case TX_32X32:
      vp9_idct32x32_add(dqcoeff, dst, pd->dst.stride, p->eobs[block]);
      break;
    case TX_16X16:
      vp9_idct16x16_add(dqcoeff, dst, pd->dst.stride, p->eobs[block]);
      break;
    case TX_8X8:
      vp9_idct8x8_add(dqcoeff, dst, pd->dst.stride, p->eobs[block]);
      break;
    case TX_4X4:
      // this is like vp9_short_idct4x4 but has a special case around eob<=1
      // which is significant (not just an optimization) for the lossless
      // case.
      xd->itxm_add(dqcoeff, dst, pd->dst.stride, p->eobs[block]);
      break;
    default:
      assert(0 && "Invalid transform size");
  }
}
コード例 #2
0
ファイル: vp9_encodemb.c プロジェクト: venkatarajasekhar/Qt
static void encode_block_pass1(int plane, int block, BLOCK_SIZE plane_bsize,
                               TX_SIZE tx_size, void *arg) {
  MACROBLOCK *const x = (MACROBLOCK *)arg;
  MACROBLOCKD *const xd = &x->e_mbd;
  struct macroblock_plane *const p = &x->plane[plane];
  struct macroblockd_plane *const pd = &xd->plane[plane];
  int16_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
  int i, j;
  uint8_t *dst;
  txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &i, &j);
  dst = &pd->dst.buf[4 * j * pd->dst.stride + 4 * i];

  vp9_xform_quant(x, plane, block, plane_bsize, tx_size);

  if (p->eobs[block] > 0)
    xd->itxm_add(dqcoeff, dst, pd->dst.stride, p->eobs[block]);
}