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vpx/vp8/common/reconintra.c
Timothy B. Terriberry c4d7e5e67e Eliminate more warnings. 
This eliminates a large set of warnings exposed by the Mozilla build
 system (Use of C++ comments in ISO C90 source, commas at the end of
 enum lists, a couple incomplete initializers, and signed/unsigned
 comparisons).
It also eliminates many (but not all) of the warnings expose by newer
 GCC versions and _FORTIFY_SOURCE (e.g., calling fread and fwrite
 without checking the return values).
There are a few spurious warnings left on my system:

../vp8/encoder/encodemb.c:274:9: warning: 'sz' may be used
 uninitialized in this function
gcc seems to be unable to figure out that the value shortcut doesn't
 change between the two if blocks that test it here.

../vp8/encoder/onyx_if.c:5314:5: warning: comparison of unsigned
 expression >= 0 is always true
../vp8/encoder/onyx_if.c:5319:5: warning: comparison of unsigned
 expression >= 0 is always true
This is true, so far as it goes, but it's comparing against an enum, and the C
 standard does not mandate that enums be unsigned, so the checks can't be
 removed.

Change-Id: Iaf689ae3e3d0ddc5ade00faa474debe73b8d3395
2010-10-27 18:08:04 -07:00

557 lines
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/*
* 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_ports/config.h"
#include "recon.h"
#include "reconintra.h"
#include "vpx_mem/vpx_mem.h"
/* For skip_recon_mb(), add vp8_build_intra_predictors_mby_s(MACROBLOCKD *x) and
* vp8_build_intra_predictors_mbuv_s(MACROBLOCKD *x).
*/
void vp8_recon_intra_mbuv(const vp8_recon_rtcd_vtable_t *rtcd, MACROBLOCKD *x)
{
int i;
for (i = 16; i < 24; i += 2)
{
BLOCKD *b = &x->block[i];
RECON_INVOKE(rtcd, recon2)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride);
}
}
void vp8_build_intra_predictors_mby(MACROBLOCKD *x)
{
unsigned char *yabove_row = x->dst.y_buffer - x->dst.y_stride;
unsigned char yleft_col[16];
unsigned char ytop_left = yabove_row[-1];
unsigned char *ypred_ptr = x->predictor;
int r, c, i;
for (i = 0; i < 16; i++)
{
yleft_col[i] = x->dst.y_buffer [i* x->dst.y_stride -1];
}
/* for Y */
switch (x->mode_info_context->mbmi.mode)
{
case DC_PRED:
{
int expected_dc;
int i;
int shift;
int average = 0;
if (x->up_available || x->left_available)
{
if (x->up_available)
{
for (i = 0; i < 16; i++)
{
average += yabove_row[i];
}
}
if (x->left_available)
{
for (i = 0; i < 16; i++)
{
average += yleft_col[i];
}
}
shift = 3 + x->up_available + x->left_available;
expected_dc = (average + (1 << (shift - 1))) >> shift;
}
else
{
expected_dc = 128;
}
vpx_memset(ypred_ptr, expected_dc, 256);
}
break;
case V_PRED:
{
for (r = 0; r < 16; r++)
{
((int *)ypred_ptr)[0] = ((int *)yabove_row)[0];
((int *)ypred_ptr)[1] = ((int *)yabove_row)[1];
((int *)ypred_ptr)[2] = ((int *)yabove_row)[2];
((int *)ypred_ptr)[3] = ((int *)yabove_row)[3];
ypred_ptr += 16;
}
}
break;
case H_PRED:
{
for (r = 0; r < 16; r++)
{
vpx_memset(ypred_ptr, yleft_col[r], 16);
ypred_ptr += 16;
}
}
break;
case TM_PRED:
{
for (r = 0; r < 16; r++)
{
for (c = 0; c < 16; c++)
{
int pred = yleft_col[r] + yabove_row[ c] - ytop_left;
if (pred < 0)
pred = 0;
if (pred > 255)
pred = 255;
ypred_ptr[c] = pred;
}
ypred_ptr += 16;
}
}
break;
case B_PRED:
case NEARESTMV:
case NEARMV:
case ZEROMV:
case NEWMV:
case SPLITMV:
case MB_MODE_COUNT:
break;
}
}
void vp8_build_intra_predictors_mby_s(MACROBLOCKD *x)
{
unsigned char *yabove_row = x->dst.y_buffer - x->dst.y_stride;
unsigned char yleft_col[16];
unsigned char ytop_left = yabove_row[-1];
unsigned char *ypred_ptr = x->predictor;
int r, c, i;
int y_stride = x->dst.y_stride;
ypred_ptr = x->dst.y_buffer; /*x->predictor;*/
for (i = 0; i < 16; i++)
{
yleft_col[i] = x->dst.y_buffer [i* x->dst.y_stride -1];
}
/* for Y */
switch (x->mode_info_context->mbmi.mode)
{
case DC_PRED:
{
int expected_dc;
int i;
int shift;
int average = 0;
if (x->up_available || x->left_available)
{
if (x->up_available)
{
for (i = 0; i < 16; i++)
{
average += yabove_row[i];
}
}
if (x->left_available)
{
for (i = 0; i < 16; i++)
{
average += yleft_col[i];
}
}
shift = 3 + x->up_available + x->left_available;
expected_dc = (average + (1 << (shift - 1))) >> shift;
}
else
{
expected_dc = 128;
}
/*vpx_memset(ypred_ptr, expected_dc, 256);*/
for (r = 0; r < 16; r++)
{
vpx_memset(ypred_ptr, expected_dc, 16);
ypred_ptr += y_stride; /*16;*/
}
}
break;
case V_PRED:
{
for (r = 0; r < 16; r++)
{
((int *)ypred_ptr)[0] = ((int *)yabove_row)[0];
((int *)ypred_ptr)[1] = ((int *)yabove_row)[1];
((int *)ypred_ptr)[2] = ((int *)yabove_row)[2];
((int *)ypred_ptr)[3] = ((int *)yabove_row)[3];
ypred_ptr += y_stride; /*16;*/
}
}
break;
case H_PRED:
{
for (r = 0; r < 16; r++)
{
vpx_memset(ypred_ptr, yleft_col[r], 16);
ypred_ptr += y_stride; /*16;*/
}
}
break;
case TM_PRED:
{
for (r = 0; r < 16; r++)
{
for (c = 0; c < 16; c++)
{
int pred = yleft_col[r] + yabove_row[ c] - ytop_left;
if (pred < 0)
pred = 0;
if (pred > 255)
pred = 255;
ypred_ptr[c] = pred;
}
ypred_ptr += y_stride; /*16;*/
}
}
break;
case B_PRED:
case NEARESTMV:
case NEARMV:
case ZEROMV:
case NEWMV:
case SPLITMV:
case MB_MODE_COUNT:
break;
}
}
void vp8_build_intra_predictors_mbuv(MACROBLOCKD *x)
{
unsigned char *uabove_row = x->dst.u_buffer - x->dst.uv_stride;
unsigned char uleft_col[16];
unsigned char utop_left = uabove_row[-1];
unsigned char *vabove_row = x->dst.v_buffer - x->dst.uv_stride;
unsigned char vleft_col[20];
unsigned char vtop_left = vabove_row[-1];
unsigned char *upred_ptr = &x->predictor[256];
unsigned char *vpred_ptr = &x->predictor[320];
int i, j;
for (i = 0; i < 8; i++)
{
uleft_col[i] = x->dst.u_buffer [i* x->dst.uv_stride -1];
vleft_col[i] = x->dst.v_buffer [i* x->dst.uv_stride -1];
}
switch (x->mode_info_context->mbmi.uv_mode)
{
case DC_PRED:
{
int expected_udc;
int expected_vdc;
int i;
int shift;
int Uaverage = 0;
int Vaverage = 0;
if (x->up_available)
{
for (i = 0; i < 8; i++)
{
Uaverage += uabove_row[i];
Vaverage += vabove_row[i];
}
}
if (x->left_available)
{
for (i = 0; i < 8; i++)
{
Uaverage += uleft_col[i];
Vaverage += vleft_col[i];
}
}
if (!x->up_available && !x->left_available)
{
expected_udc = 128;
expected_vdc = 128;
}
else
{
shift = 2 + x->up_available + x->left_available;
expected_udc = (Uaverage + (1 << (shift - 1))) >> shift;
expected_vdc = (Vaverage + (1 << (shift - 1))) >> shift;
}
vpx_memset(upred_ptr, expected_udc, 64);
vpx_memset(vpred_ptr, expected_vdc, 64);
}
break;
case V_PRED:
{
int i;
for (i = 0; i < 8; i++)
{
vpx_memcpy(upred_ptr, uabove_row, 8);
vpx_memcpy(vpred_ptr, vabove_row, 8);
upred_ptr += 8;
vpred_ptr += 8;
}
}
break;
case H_PRED:
{
int i;
for (i = 0; i < 8; i++)
{
vpx_memset(upred_ptr, uleft_col[i], 8);
vpx_memset(vpred_ptr, vleft_col[i], 8);
upred_ptr += 8;
vpred_ptr += 8;
}
}
break;
case TM_PRED:
{
int i;
for (i = 0; i < 8; i++)
{
for (j = 0; j < 8; j++)
{
int predu = uleft_col[i] + uabove_row[j] - utop_left;
int predv = vleft_col[i] + vabove_row[j] - vtop_left;
if (predu < 0)
predu = 0;
if (predu > 255)
predu = 255;
if (predv < 0)
predv = 0;
if (predv > 255)
predv = 255;
upred_ptr[j] = predu;
vpred_ptr[j] = predv;
}
upred_ptr += 8;
vpred_ptr += 8;
}
}
break;
case B_PRED:
case NEARESTMV:
case NEARMV:
case ZEROMV:
case NEWMV:
case SPLITMV:
case MB_MODE_COUNT:
break;
}
}
void vp8_build_intra_predictors_mbuv_s(MACROBLOCKD *x)
{
unsigned char *uabove_row = x->dst.u_buffer - x->dst.uv_stride;
unsigned char uleft_col[16];
unsigned char utop_left = uabove_row[-1];
unsigned char *vabove_row = x->dst.v_buffer - x->dst.uv_stride;
unsigned char vleft_col[20];
unsigned char vtop_left = vabove_row[-1];
unsigned char *upred_ptr = x->dst.u_buffer; /*&x->predictor[256];*/
unsigned char *vpred_ptr = x->dst.v_buffer; /*&x->predictor[320];*/
int uv_stride = x->dst.uv_stride;
int i, j;
for (i = 0; i < 8; i++)
{
uleft_col[i] = x->dst.u_buffer [i* x->dst.uv_stride -1];
vleft_col[i] = x->dst.v_buffer [i* x->dst.uv_stride -1];
}
switch (x->mode_info_context->mbmi.uv_mode)
{
case DC_PRED:
{
int expected_udc;
int expected_vdc;
int i;
int shift;
int Uaverage = 0;
int Vaverage = 0;
if (x->up_available)
{
for (i = 0; i < 8; i++)
{
Uaverage += uabove_row[i];
Vaverage += vabove_row[i];
}
}
if (x->left_available)
{
for (i = 0; i < 8; i++)
{
Uaverage += uleft_col[i];
Vaverage += vleft_col[i];
}
}
if (!x->up_available && !x->left_available)
{
expected_udc = 128;
expected_vdc = 128;
}
else
{
shift = 2 + x->up_available + x->left_available;
expected_udc = (Uaverage + (1 << (shift - 1))) >> shift;
expected_vdc = (Vaverage + (1 << (shift - 1))) >> shift;
}
/*vpx_memset(upred_ptr,expected_udc,64);*/
/*vpx_memset(vpred_ptr,expected_vdc,64);*/
for (i = 0; i < 8; i++)
{
vpx_memset(upred_ptr, expected_udc, 8);
vpx_memset(vpred_ptr, expected_vdc, 8);
upred_ptr += uv_stride; /*8;*/
vpred_ptr += uv_stride; /*8;*/
}
}
break;
case V_PRED:
{
int i;
for (i = 0; i < 8; i++)
{
vpx_memcpy(upred_ptr, uabove_row, 8);
vpx_memcpy(vpred_ptr, vabove_row, 8);
upred_ptr += uv_stride; /*8;*/
vpred_ptr += uv_stride; /*8;*/
}
}
break;
case H_PRED:
{
int i;
for (i = 0; i < 8; i++)
{
vpx_memset(upred_ptr, uleft_col[i], 8);
vpx_memset(vpred_ptr, vleft_col[i], 8);
upred_ptr += uv_stride; /*8;*/
vpred_ptr += uv_stride; /*8;*/
}
}
break;
case TM_PRED:
{
int i;
for (i = 0; i < 8; i++)
{
for (j = 0; j < 8; j++)
{
int predu = uleft_col[i] + uabove_row[j] - utop_left;
int predv = vleft_col[i] + vabove_row[j] - vtop_left;
if (predu < 0)
predu = 0;
if (predu > 255)
predu = 255;
if (predv < 0)
predv = 0;
if (predv > 255)
predv = 255;
upred_ptr[j] = predu;
vpred_ptr[j] = predv;
}
upred_ptr += uv_stride; /*8;*/
vpred_ptr += uv_stride; /*8;*/
}
}
break;
case B_PRED:
case NEARESTMV:
case NEARMV:
case ZEROMV:
case NEWMV:
case SPLITMV:
case MB_MODE_COUNT:
break;
}
}
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