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-rw-r--r--media/libvpx/vp8/encoder/encodeintra.c139
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);
+}