diff options
Diffstat (limited to 'media/libvpx/vp8/encoder/encodeintra.c')
| -rw-r--r-- | media/libvpx/vp8/encoder/encodeintra.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/media/libvpx/vp8/encoder/encodeintra.c b/media/libvpx/vp8/encoder/encodeintra.c new file mode 100644 index 000000000..e2de5eecb --- /dev/null +++ b/media/libvpx/vp8/encoder/encodeintra.c @@ -0,0 +1,139 @@ +/* + * Copyright (c) 2010 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + + +#include "vpx_config.h" +#include "vp8_rtcd.h" +#include "./vpx_dsp_rtcd.h" +#include "quantize.h" +#include "vp8/common/reconintra4x4.h" +#include "encodemb.h" +#include "vp8/common/invtrans.h" +#include "encodeintra.h" + + +int vp8_encode_intra(VP8_COMP *cpi, MACROBLOCK *x, int use_dc_pred) +{ + + int i; + int intra_pred_var = 0; + (void) cpi; + + if (use_dc_pred) + { + x->e_mbd.mode_info_context->mbmi.mode = DC_PRED; + x->e_mbd.mode_info_context->mbmi.uv_mode = DC_PRED; + x->e_mbd.mode_info_context->mbmi.ref_frame = INTRA_FRAME; + + vp8_encode_intra16x16mby(x); + + vp8_inverse_transform_mby(&x->e_mbd); + } + else + { + for (i = 0; i < 16; i++) + { + x->e_mbd.block[i].bmi.as_mode = B_DC_PRED; + vp8_encode_intra4x4block(x, i); + } + } + + intra_pred_var = vpx_get_mb_ss(x->src_diff); + + return intra_pred_var; +} + +void vp8_encode_intra4x4block(MACROBLOCK *x, int ib) +{ + BLOCKD *b = &x->e_mbd.block[ib]; + BLOCK *be = &x->block[ib]; + int dst_stride = x->e_mbd.dst.y_stride; + unsigned char *dst = x->e_mbd.dst.y_buffer + b->offset; + unsigned char *Above = dst - dst_stride; + unsigned char *yleft = dst - 1; + unsigned char top_left = Above[-1]; + + vp8_intra4x4_predict(Above, yleft, dst_stride, b->bmi.as_mode, + b->predictor, 16, top_left); + + vp8_subtract_b(be, b, 16); + + x->short_fdct4x4(be->src_diff, be->coeff, 32); + + x->quantize_b(be, b); + + if (*b->eob > 1) + { + vp8_short_idct4x4llm(b->dqcoeff, b->predictor, 16, dst, dst_stride); + } + else + { + vp8_dc_only_idct_add(b->dqcoeff[0], b->predictor, 16, dst, dst_stride); + } +} + +void vp8_encode_intra4x4mby(MACROBLOCK *mb) +{ + int i; + + MACROBLOCKD *xd = &mb->e_mbd; + intra_prediction_down_copy(xd, xd->dst.y_buffer - xd->dst.y_stride + 16); + + for (i = 0; i < 16; i++) + vp8_encode_intra4x4block(mb, i); + return; +} + +void vp8_encode_intra16x16mby(MACROBLOCK *x) +{ + BLOCK *b = &x->block[0]; + MACROBLOCKD *xd = &x->e_mbd; + + vp8_build_intra_predictors_mby_s(xd, + xd->dst.y_buffer - xd->dst.y_stride, + xd->dst.y_buffer - 1, + xd->dst.y_stride, + xd->dst.y_buffer, + xd->dst.y_stride); + + vp8_subtract_mby(x->src_diff, *(b->base_src), + b->src_stride, xd->dst.y_buffer, xd->dst.y_stride); + + vp8_transform_intra_mby(x); + + vp8_quantize_mby(x); + + if (x->optimize) + vp8_optimize_mby(x); +} + +void vp8_encode_intra16x16mbuv(MACROBLOCK *x) +{ + MACROBLOCKD *xd = &x->e_mbd; + + vp8_build_intra_predictors_mbuv_s(xd, xd->dst.u_buffer - xd->dst.uv_stride, + xd->dst.v_buffer - xd->dst.uv_stride, + xd->dst.u_buffer - 1, + xd->dst.v_buffer - 1, + xd->dst.uv_stride, + xd->dst.u_buffer, xd->dst.v_buffer, + xd->dst.uv_stride); + + vp8_subtract_mbuv(x->src_diff, x->src.u_buffer, + x->src.v_buffer, x->src.uv_stride, xd->dst.u_buffer, + xd->dst.v_buffer, xd->dst.uv_stride); + + vp8_transform_mbuv(x); + + vp8_quantize_mbuv(x); + + if (x->optimize) + vp8_optimize_mbuv(x); +} |