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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
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240
media/libvpx/vpx_scale/generic/gen_scalers.c Normal file
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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_scale_rtcd.h"
#include "vpx_scale/vpx_scale.h"
#include "vpx_mem/vpx_mem.h"
/****************************************************************************
* Imports
****************************************************************************/
/****************************************************************************
*
*
* INPUTS : const unsigned char *source : Pointer to source data.
* unsigned int source_width : Stride of source.
* unsigned char *dest : Pointer to destination data.
* unsigned int dest_width : Stride of destination (NOT USED).
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Copies horizontal line of pixels from source to
* destination scaling up by 4 to 5.
*
* SPECIAL NOTES : None.
*
****************************************************************************/
void vp8_horizontal_line_5_4_scale_c(const unsigned char *source,
unsigned int source_width,
unsigned char *dest,
unsigned int dest_width) {
unsigned i;
unsigned int a, b, c, d, e;
unsigned char *des = dest;
const unsigned char *src = source;
(void) dest_width;
for (i = 0; i < source_width; i += 5) {
a = src[0];
b = src[1];
c = src[2];
d = src[3];
e = src[4];
des[0] = (unsigned char) a;
des[1] = (unsigned char)((b * 192 + c * 64 + 128) >> 8);
des[2] = (unsigned char)((c * 128 + d * 128 + 128) >> 8);
des[3] = (unsigned char)((d * 64 + e * 192 + 128) >> 8);
src += 5;
des += 4;
}
}
void vp8_vertical_band_5_4_scale_c(unsigned char *source,
unsigned int src_pitch,
unsigned char *dest,
unsigned int dest_pitch,
unsigned int dest_width) {
unsigned int i;
unsigned int a, b, c, d, e;
unsigned char *des = dest;
unsigned char *src = source;
for (i = 0; i < dest_width; i++) {
a = src[0 * src_pitch];
b = src[1 * src_pitch];
c = src[2 * src_pitch];
d = src[3 * src_pitch];
e = src[4 * src_pitch];
des[0 * dest_pitch] = (unsigned char) a;
des[1 * dest_pitch] = (unsigned char)((b * 192 + c * 64 + 128) >> 8);
des[2 * dest_pitch] = (unsigned char)((c * 128 + d * 128 + 128) >> 8);
des[3 * dest_pitch] = (unsigned char)((d * 64 + e * 192 + 128) >> 8);
src++;
des++;
}
}
/*7***************************************************************************
*
* ROUTINE : vp8_horizontal_line_3_5_scale_c
*
* INPUTS : const unsigned char *source : Pointer to source data.
* unsigned int source_width : Stride of source.
* unsigned char *dest : Pointer to destination data.
* unsigned int dest_width : Stride of destination (NOT USED).
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Copies horizontal line of pixels from source to
* destination scaling up by 3 to 5.
*
* SPECIAL NOTES : None.
*
*
****************************************************************************/
void vp8_horizontal_line_5_3_scale_c(const unsigned char *source,
unsigned int source_width,
unsigned char *dest,
unsigned int dest_width) {
unsigned int i;
unsigned int a, b, c, d, e;
unsigned char *des = dest;
const unsigned char *src = source;
(void) dest_width;
for (i = 0; i < source_width; i += 5) {
a = src[0];
b = src[1];
c = src[2];
d = src[3];
e = src[4];
des[0] = (unsigned char) a;
des[1] = (unsigned char)((b * 85 + c * 171 + 128) >> 8);
des[2] = (unsigned char)((d * 171 + e * 85 + 128) >> 8);
src += 5;
des += 3;
}
}
void vp8_vertical_band_5_3_scale_c(unsigned char *source,
unsigned int src_pitch,
unsigned char *dest,
unsigned int dest_pitch,
unsigned int dest_width) {
unsigned int i;
unsigned int a, b, c, d, e;
unsigned char *des = dest;
unsigned char *src = source;
for (i = 0; i < dest_width; i++) {
a = src[0 * src_pitch];
b = src[1 * src_pitch];
c = src[2 * src_pitch];
d = src[3 * src_pitch];
e = src[4 * src_pitch];
des[0 * dest_pitch] = (unsigned char) a;
des[1 * dest_pitch] = (unsigned char)((b * 85 + c * 171 + 128) >> 8);
des[2 * dest_pitch] = (unsigned char)((d * 171 + e * 85 + 128) >> 8);
src++;
des++;
}
}
/****************************************************************************
*
* ROUTINE : vp8_horizontal_line_1_2_scale_c
*
* INPUTS : const unsigned char *source : Pointer to source data.
* unsigned int source_width : Stride of source.
* unsigned char *dest : Pointer to destination data.
* unsigned int dest_width : Stride of destination (NOT USED).
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Copies horizontal line of pixels from source to
* destination scaling up by 1 to 2.
*
* SPECIAL NOTES : None.
*
****************************************************************************/
void vp8_horizontal_line_2_1_scale_c(const unsigned char *source,
unsigned int source_width,
unsigned char *dest,
unsigned int dest_width) {
unsigned int i;
unsigned int a;
unsigned char *des = dest;
const unsigned char *src = source;
(void) dest_width;
for (i = 0; i < source_width; i += 2) {
a = src[0];
des [0] = (unsigned char)(a);
src += 2;
des += 1;
}
}
void vp8_vertical_band_2_1_scale_c(unsigned char *source,
unsigned int src_pitch,
unsigned char *dest,
unsigned int dest_pitch,
unsigned int dest_width) {
(void) dest_pitch;
(void) src_pitch;
memcpy(dest, source, dest_width);
}
void vp8_vertical_band_2_1_scale_i_c(unsigned char *source,
unsigned int src_pitch,
unsigned char *dest,
unsigned int dest_pitch,
unsigned int dest_width) {
int i;
int temp;
int width = dest_width;
(void) dest_pitch;
for (i = 0; i < width; i++) {
temp = 8;
temp += source[i - (int)src_pitch] * 3;
temp += source[i] * 10;
temp += source[i + src_pitch] * 3;
temp >>= 4;
dest[i] = (unsigned char)(temp);
}
}

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media/libvpx/vpx_scale/generic/vpx_scale.c Normal file
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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.
*/
/****************************************************************************
*
* Module Title : scale.c
*
* Description : Image scaling functions.
*
***************************************************************************/
/****************************************************************************
* Header Files
****************************************************************************/
#include "./vpx_scale_rtcd.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_scale/vpx_scale.h"
#include "vpx_scale/yv12config.h"
typedef struct {
int expanded_frame_width;
int expanded_frame_height;
int HScale;
int HRatio;
int VScale;
int VRatio;
YV12_BUFFER_CONFIG *src_yuv_config;
YV12_BUFFER_CONFIG *dst_yuv_config;
} SCALE_VARS;
/****************************************************************************
*
* ROUTINE : scale1d_2t1_i
*
* INPUTS : const unsigned char *source : Pointer to data to be scaled.
* int source_step : Number of pixels to step on in source.
* unsigned int source_scale : Scale for source (UNUSED).
* unsigned int source_length : Length of source (UNUSED).
* unsigned char *dest : Pointer to output data array.
* int dest_step : Number of pixels to step on in destination.
* unsigned int dest_scale : Scale for destination (UNUSED).
* unsigned int dest_length : Length of destination.
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Performs 2-to-1 interpolated scaling.
*
* SPECIAL NOTES : None.
*
****************************************************************************/
static
void scale1d_2t1_i
(
const unsigned char *source,
int source_step,
unsigned int source_scale,
unsigned int source_length,
unsigned char *dest,
int dest_step,
unsigned int dest_scale,
unsigned int dest_length
) {
unsigned int i, j;
unsigned int temp;
int source_pitch = source_step;
(void) source_length;
(void) source_scale;
(void) dest_scale;
source_step *= 2;
dest[0] = source[0];
for (i = dest_step, j = source_step; i < dest_length * dest_step; i += dest_step, j += source_step) {
temp = 8;
temp += 3 * source[j - source_pitch];
temp += 10 * source[j];
temp += 3 * source[j + source_pitch];
temp >>= 4;
dest[i] = (char)(temp);
}
}
/****************************************************************************
*
* ROUTINE : scale1d_2t1_ps
*
* INPUTS : const unsigned char *source : Pointer to data to be scaled.
* int source_step : Number of pixels to step on in source.
* unsigned int source_scale : Scale for source (UNUSED).
* unsigned int source_length : Length of source (UNUSED).
* unsigned char *dest : Pointer to output data array.
* int dest_step : Number of pixels to step on in destination.
* unsigned int dest_scale : Scale for destination (UNUSED).
* unsigned int dest_length : Length of destination.
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Performs 2-to-1 point subsampled scaling.
*
* SPECIAL NOTES : None.
*
****************************************************************************/
static
void scale1d_2t1_ps
(
const unsigned char *source,
int source_step,
unsigned int source_scale,
unsigned int source_length,
unsigned char *dest,
int dest_step,
unsigned int dest_scale,
unsigned int dest_length
) {
unsigned int i, j;
(void) source_length;
(void) source_scale;
(void) dest_scale;
source_step *= 2;
j = 0;
for (i = 0; i < dest_length * dest_step; i += dest_step, j += source_step)
dest[i] = source[j];
}
/****************************************************************************
*
* ROUTINE : scale1d_c
*
* INPUTS : const unsigned char *source : Pointer to data to be scaled.
* int source_step : Number of pixels to step on in source.
* unsigned int source_scale : Scale for source.
* unsigned int source_length : Length of source (UNUSED).
* unsigned char *dest : Pointer to output data array.
* int dest_step : Number of pixels to step on in destination.
* unsigned int dest_scale : Scale for destination.
* unsigned int dest_length : Length of destination.
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Performs linear interpolation in one dimension.
*
* SPECIAL NOTES : None.
*
****************************************************************************/
static
void scale1d_c
(
const unsigned char *source,
int source_step,
unsigned int source_scale,
unsigned int source_length,
unsigned char *dest,
int dest_step,
unsigned int dest_scale,
unsigned int dest_length
) {
unsigned int i;
unsigned int round_value = dest_scale / 2;
unsigned int left_modifier = dest_scale;
unsigned int right_modifier = 0;
unsigned char left_pixel = *source;
unsigned char right_pixel = *(source + source_step);
(void) source_length;
/* These asserts are needed if there are boundary issues... */
/*assert ( dest_scale > source_scale );*/
/*assert ( (source_length-1) * dest_scale >= (dest_length-1) * source_scale );*/
for (i = 0; i < dest_length * dest_step; i += dest_step) {
dest[i] = (char)((left_modifier * left_pixel + right_modifier * right_pixel + round_value) / dest_scale);
right_modifier += source_scale;
while (right_modifier > dest_scale) {
right_modifier -= dest_scale;
source += source_step;
left_pixel = *source;
right_pixel = *(source + source_step);
}
left_modifier = dest_scale - right_modifier;
}
}
/****************************************************************************
*
* ROUTINE : Scale2D
*
* INPUTS : const unsigned char *source : Pointer to data to be scaled.
* int source_pitch : Stride of source image.
* unsigned int source_width : Width of input image.
* unsigned int source_height : Height of input image.
* unsigned char *dest : Pointer to output data array.
* int dest_pitch : Stride of destination image.
* unsigned int dest_width : Width of destination image.
* unsigned int dest_height : Height of destination image.
* unsigned char *temp_area : Pointer to temp work area.
* unsigned char temp_area_height : Height of temp work area.
* unsigned int hscale : Horizontal scale factor numerator.
* unsigned int hratio : Horizontal scale factor denominator.
* unsigned int vscale : Vertical scale factor numerator.
* unsigned int vratio : Vertical scale factor denominator.
* unsigned int interlaced : Interlace flag.
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Performs 2-tap linear interpolation in two dimensions.
*
* SPECIAL NOTES : Expansion is performed one band at a time to help with
* caching.
*
****************************************************************************/
static
void Scale2D
(
/*const*/
unsigned char *source,
int source_pitch,
unsigned int source_width,
unsigned int source_height,
unsigned char *dest,
int dest_pitch,
unsigned int dest_width,
unsigned int dest_height,
unsigned char *temp_area,
unsigned char temp_area_height,
unsigned int hscale,
unsigned int hratio,
unsigned int vscale,
unsigned int vratio,
unsigned int interlaced
) {
/*unsigned*/
int i, j, k;
int bands;
int dest_band_height;
int source_band_height;
typedef void (*Scale1D)(const unsigned char * source, int source_step, unsigned int source_scale, unsigned int source_length,
unsigned char * dest, int dest_step, unsigned int dest_scale, unsigned int dest_length);
Scale1D Scale1Dv = scale1d_c;
Scale1D Scale1Dh = scale1d_c;
void (*horiz_line_scale)(const unsigned char *, unsigned int, unsigned char *, unsigned int) = NULL;
void (*vert_band_scale)(unsigned char *, unsigned int, unsigned char *, unsigned int, unsigned int) = NULL;
int ratio_scalable = 1;
int interpolation = 0;
unsigned char *source_base; /* = (unsigned char *) ((source_pitch >= 0) ? source : (source + ((source_height-1) * source_pitch))); */
unsigned char *line_src;
source_base = (unsigned char *)source;
if (source_pitch < 0) {
int offset;
offset = (source_height - 1);
offset *= source_pitch;
source_base += offset;
}
/* find out the ratio for each direction */
switch (hratio * 10 / hscale) {
case 8:
/* 4-5 Scale in Width direction */
horiz_line_scale = vp8_horizontal_line_5_4_scale;
break;
case 6:
/* 3-5 Scale in Width direction */
horiz_line_scale = vp8_horizontal_line_5_3_scale;
break;
case 5:
/* 1-2 Scale in Width direction */
horiz_line_scale = vp8_horizontal_line_2_1_scale;
break;
default:
/* The ratio is not acceptable now */
/* throw("The ratio is not acceptable for now!"); */
ratio_scalable = 0;
break;
}
switch (vratio * 10 / vscale) {
case 8:
/* 4-5 Scale in vertical direction */
vert_band_scale = vp8_vertical_band_5_4_scale;
source_band_height = 5;
dest_band_height = 4;
break;
case 6:
/* 3-5 Scale in vertical direction */
vert_band_scale = vp8_vertical_band_5_3_scale;
source_band_height = 5;
dest_band_height = 3;
break;
case 5:
/* 1-2 Scale in vertical direction */
if (interlaced) {
/* if the content is interlaced, point sampling is used */
vert_band_scale = vp8_vertical_band_2_1_scale;
} else {
interpolation = 1;
/* if the content is progressive, interplo */
vert_band_scale = vp8_vertical_band_2_1_scale_i;
}
source_band_height = 2;
dest_band_height = 1;
break;
default:
/* The ratio is not acceptable now */
/* throw("The ratio is not acceptable for now!"); */
ratio_scalable = 0;
break;
}
if (ratio_scalable) {
if (source_height == dest_height) {
/* for each band of the image */
for (k = 0; k < (int)dest_height; k++) {
horiz_line_scale(source, source_width, dest, dest_width);
source += source_pitch;
dest += dest_pitch;
}
return;
}
if (interpolation) {
if (source < source_base)
source = source_base;
horiz_line_scale(source, source_width, temp_area, dest_width);
}
for (k = 0; k < (int)(dest_height + dest_band_height - 1) / dest_band_height; k++) {
/* scale one band horizontally */
for (i = 0; i < source_band_height; i++) {
/* Trap case where we could read off the base of the source buffer */
line_src = (unsigned char *)source + i * source_pitch;
if (line_src < source_base)
line_src = source_base;
horiz_line_scale(line_src, source_width,
temp_area + (i + 1)*dest_pitch, dest_width);
}
/* Vertical scaling is in place */
vert_band_scale(temp_area + dest_pitch, dest_pitch, dest, dest_pitch, dest_width);
if (interpolation)
memcpy(temp_area, temp_area + source_band_height * dest_pitch, dest_width);
/* Next band... */
source += (unsigned long) source_band_height * source_pitch;
dest += (unsigned long) dest_band_height * dest_pitch;
}
return;
}
if (hscale == 2 && hratio == 1)
Scale1Dh = scale1d_2t1_ps;
if (vscale == 2 && vratio == 1) {
if (interlaced)
Scale1Dv = scale1d_2t1_ps;
else
Scale1Dv = scale1d_2t1_i;
}
if (source_height == dest_height) {
/* for each band of the image */
for (k = 0; k < (int)dest_height; k++) {
Scale1Dh(source, 1, hscale, source_width + 1, dest, 1, hratio, dest_width);
source += source_pitch;
dest += dest_pitch;
}
return;
}
if (dest_height > source_height) {
dest_band_height = temp_area_height - 1;
source_band_height = dest_band_height * source_height / dest_height;
} else {
source_band_height = temp_area_height - 1;
dest_band_height = source_band_height * vratio / vscale;
}
/* first row needs to be done so that we can stay one row ahead for vertical zoom */
Scale1Dh(source, 1, hscale, source_width + 1, temp_area, 1, hratio, dest_width);
/* for each band of the image */
bands = (dest_height + dest_band_height - 1) / dest_band_height;
for (k = 0; k < bands; k++) {
/* scale one band horizontally */
for (i = 1; i < source_band_height + 1; i++) {
if (k * source_band_height + i < (int) source_height) {
Scale1Dh(source + i * source_pitch, 1, hscale, source_width + 1,
temp_area + i * dest_pitch, 1, hratio, dest_width);
} else { /* Duplicate the last row */
/* copy temp_area row 0 over from last row in the past */
memcpy(temp_area + i * dest_pitch, temp_area + (i - 1)*dest_pitch, dest_pitch);
}
}
/* scale one band vertically */
for (j = 0; j < (int)dest_width; j++) {
Scale1Dv(&temp_area[j], dest_pitch, vscale, source_band_height + 1,
&dest[j], dest_pitch, vratio, dest_band_height);
}
/* copy temp_area row 0 over from last row in the past */
memcpy(temp_area, temp_area + source_band_height * dest_pitch, dest_pitch);
/* move to the next band */
source += source_band_height * source_pitch;
dest += dest_band_height * dest_pitch;
}
}
/****************************************************************************
*
* ROUTINE : vpx_scale_frame
*
* INPUTS : YV12_BUFFER_CONFIG *src : Pointer to frame to be scaled.
* YV12_BUFFER_CONFIG *dst : Pointer to buffer to hold scaled frame.
* unsigned char *temp_area : Pointer to temp work area.
* unsigned char temp_area_height : Height of temp work area.
* unsigned int hscale : Horizontal scale factor numerator.
* unsigned int hratio : Horizontal scale factor denominator.
* unsigned int vscale : Vertical scale factor numerator.
* unsigned int vratio : Vertical scale factor denominator.
* unsigned int interlaced : Interlace flag.
*
* OUTPUTS : None.
*
* RETURNS : void
*
* FUNCTION : Performs 2-tap linear interpolation in two dimensions.
*
* SPECIAL NOTES : Expansion is performed one band at a time to help with
* caching.
*
****************************************************************************/
void vpx_scale_frame
(
YV12_BUFFER_CONFIG *src,
YV12_BUFFER_CONFIG *dst,
unsigned char *temp_area,
unsigned char temp_height,
unsigned int hscale,
unsigned int hratio,
unsigned int vscale,
unsigned int vratio,
unsigned int interlaced
) {
int i;
int dw = (hscale - 1 + src->y_width * hratio) / hscale;
int dh = (vscale - 1 + src->y_height * vratio) / vscale;
/* call our internal scaling routines!! */
Scale2D((unsigned char *) src->y_buffer, src->y_stride, src->y_width, src->y_height,
(unsigned char *) dst->y_buffer, dst->y_stride, dw, dh,
temp_area, temp_height, hscale, hratio, vscale, vratio, interlaced);
if (dw < (int)dst->y_width)
for (i = 0; i < dh; i++)
memset(dst->y_buffer + i * dst->y_stride + dw - 1, dst->y_buffer[i * dst->y_stride + dw - 2], dst->y_width - dw + 1);
if (dh < (int)dst->y_height)
for (i = dh - 1; i < (int)dst->y_height; i++)
memcpy(dst->y_buffer + i * dst->y_stride, dst->y_buffer + (dh - 2) * dst->y_stride, dst->y_width + 1);
Scale2D((unsigned char *) src->u_buffer, src->uv_stride, src->uv_width, src->uv_height,
(unsigned char *) dst->u_buffer, dst->uv_stride, dw / 2, dh / 2,
temp_area, temp_height, hscale, hratio, vscale, vratio, interlaced);
if (dw / 2 < (int)dst->uv_width)
for (i = 0; i < dst->uv_height; i++)
memset(dst->u_buffer + i * dst->uv_stride + dw / 2 - 1, dst->u_buffer[i * dst->uv_stride + dw / 2 - 2], dst->uv_width - dw / 2 + 1);
if (dh / 2 < (int)dst->uv_height)
for (i = dh / 2 - 1; i < (int)dst->y_height / 2; i++)
memcpy(dst->u_buffer + i * dst->uv_stride, dst->u_buffer + (dh / 2 - 2)*dst->uv_stride, dst->uv_width);
Scale2D((unsigned char *) src->v_buffer, src->uv_stride, src->uv_width, src->uv_height,
(unsigned char *) dst->v_buffer, dst->uv_stride, dw / 2, dh / 2,
temp_area, temp_height, hscale, hratio, vscale, vratio, interlaced);
if (dw / 2 < (int)dst->uv_width)
for (i = 0; i < dst->uv_height; i++)
memset(dst->v_buffer + i * dst->uv_stride + dw / 2 - 1, dst->v_buffer[i * dst->uv_stride + dw / 2 - 2], dst->uv_width - dw / 2 + 1);
if (dh / 2 < (int) dst->uv_height)
for (i = dh / 2 - 1; i < (int)dst->y_height / 2; i++)
memcpy(dst->v_buffer + i * dst->uv_stride, dst->v_buffer + (dh / 2 - 2)*dst->uv_stride, dst->uv_width);
}

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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 <assert.h>
#include "vpx_scale/yv12config.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_ports/mem.h"
/****************************************************************************
* Exports
****************************************************************************/
/****************************************************************************
*
****************************************************************************/
#define yv12_align_addr(addr, align) \
(void*)(((size_t)(addr) + ((align) - 1)) & (size_t)-(align))
int
vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
if (ybf) {
// If libvpx is using frame buffer callbacks then buffer_alloc_sz must
// not be set.
if (ybf->buffer_alloc_sz > 0) {
vpx_free(ybf->buffer_alloc);
}
/* buffer_alloc isn't accessed by most functions. Rather y_buffer,
u_buffer and v_buffer point to buffer_alloc and are used. Clear out
all of this so that a freed pointer isn't inadvertently used */
memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
} else {
return -1;
}
return 0;
}
int vp8_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height, int border) {
if (ybf) {
int aligned_width = (width + 15) & ~15;
int aligned_height = (height + 15) & ~15;
int y_stride = ((aligned_width + 2 * border) + 31) & ~31;
int yplane_size = (aligned_height + 2 * border) * y_stride;
int uv_width = aligned_width >> 1;
int uv_height = aligned_height >> 1;
/** There is currently a bunch of code which assumes
* uv_stride == y_stride/2, so enforce this here. */
int uv_stride = y_stride >> 1;
int uvplane_size = (uv_height + border) * uv_stride;
const int frame_size = yplane_size + 2 * uvplane_size;
if (!ybf->buffer_alloc) {
ybf->buffer_alloc = (uint8_t *)vpx_memalign(32, frame_size);
ybf->buffer_alloc_sz = frame_size;
}
if (!ybf->buffer_alloc || ybf->buffer_alloc_sz < frame_size)
return -1;
/* Only support allocating buffers that have a border that's a multiple
* of 32. The border restriction is required to get 16-byte alignment of
* the start of the chroma rows without introducing an arbitrary gap
* between planes, which would break the semantics of things like
* vpx_img_set_rect(). */
if (border & 0x1f)
return -3;
ybf->y_crop_width = width;
ybf->y_crop_height = height;
ybf->y_width = aligned_width;
ybf->y_height = aligned_height;
ybf->y_stride = y_stride;
ybf->uv_crop_width = (width + 1) / 2;
ybf->uv_crop_height = (height + 1) / 2;
ybf->uv_width = uv_width;
ybf->uv_height = uv_height;
ybf->uv_stride = uv_stride;
ybf->alpha_width = 0;
ybf->alpha_height = 0;
ybf->alpha_stride = 0;
ybf->border = border;
ybf->frame_size = frame_size;
ybf->y_buffer = ybf->buffer_alloc + (border * y_stride) + border;
ybf->u_buffer = ybf->buffer_alloc + yplane_size + (border / 2 * uv_stride) + border / 2;
ybf->v_buffer = ybf->buffer_alloc + yplane_size + uvplane_size + (border / 2 * uv_stride) + border / 2;
ybf->alpha_buffer = NULL;
ybf->corrupted = 0; /* assume not currupted by errors */
return 0;
}
return -2;
}
int vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height, int border) {
if (ybf) {
vp8_yv12_de_alloc_frame_buffer(ybf);
return vp8_yv12_realloc_frame_buffer(ybf, width, height, border);
}
return -2;
}
#if CONFIG_VP9
// TODO(jkoleszar): Maybe replace this with struct vpx_image
int vp9_free_frame_buffer(YV12_BUFFER_CONFIG *ybf) {
if (ybf) {
if (ybf->buffer_alloc_sz > 0) {
vpx_free(ybf->buffer_alloc);
}
/* buffer_alloc isn't accessed by most functions. Rather y_buffer,
u_buffer and v_buffer point to buffer_alloc and are used. Clear out
all of this so that a freed pointer isn't inadvertently used */
memset(ybf, 0, sizeof(YV12_BUFFER_CONFIG));
} else {
return -1;
}
return 0;
}
int vp9_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height,
int ss_x, int ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
int use_highbitdepth,
#endif
int border,
int byte_alignment,
vpx_codec_frame_buffer_t *fb,
vpx_get_frame_buffer_cb_fn_t cb,
void *cb_priv) {
if (ybf) {
const int vp9_byte_align = (byte_alignment == 0) ? 1 : byte_alignment;
const int aligned_width = (width + 7) & ~7;
const int aligned_height = (height + 7) & ~7;
const int y_stride = ((aligned_width + 2 * border) + 31) & ~31;
const uint64_t yplane_size = (aligned_height + 2 * border) *
(uint64_t)y_stride + byte_alignment;
const int uv_width = aligned_width >> ss_x;
const int uv_height = aligned_height >> ss_y;
const int uv_stride = y_stride >> ss_x;
const int uv_border_w = border >> ss_x;
const int uv_border_h = border >> ss_y;
const uint64_t uvplane_size = (uv_height + 2 * uv_border_h) *
(uint64_t)uv_stride + byte_alignment;
#if CONFIG_ALPHA
const int alpha_width = aligned_width;
const int alpha_height = aligned_height;
const int alpha_stride = y_stride;
const int alpha_border_w = border;
const int alpha_border_h = border;
const uint64_t alpha_plane_size = (alpha_height + 2 * alpha_border_h) *
(uint64_t)alpha_stride + byte_alignment;
#if CONFIG_VP9_HIGHBITDEPTH
const uint64_t frame_size = (1 + use_highbitdepth) *
(yplane_size + 2 * uvplane_size + alpha_plane_size);
#else
const uint64_t frame_size = yplane_size + 2 * uvplane_size +
alpha_plane_size;
#endif // CONFIG_VP9_HIGHBITDEPTH
#else
#if CONFIG_VP9_HIGHBITDEPTH
const uint64_t frame_size =
(1 + use_highbitdepth) * (yplane_size + 2 * uvplane_size);
#else
const uint64_t frame_size = yplane_size + 2 * uvplane_size;
#endif // CONFIG_VP9_HIGHBITDEPTH
#endif // CONFIG_ALPHA
uint8_t *buf = NULL;
if (cb != NULL) {
const int align_addr_extra_size = 31;
const uint64_t external_frame_size = frame_size + align_addr_extra_size;
assert(fb != NULL);
if (external_frame_size != (size_t)external_frame_size)
return -1;
// Allocation to hold larger frame, or first allocation.
if (cb(cb_priv, (size_t)external_frame_size, fb) < 0)
return -1;
if (fb->data == NULL || fb->size < external_frame_size)
return -1;
ybf->buffer_alloc = (uint8_t *)yv12_align_addr(fb->data, 32);
} else if (frame_size > (size_t)ybf->buffer_alloc_sz) {
// Allocation to hold larger frame, or first allocation.
vpx_free(ybf->buffer_alloc);
ybf->buffer_alloc = NULL;
if (frame_size != (size_t)frame_size)
return -1;
ybf->buffer_alloc = (uint8_t *)vpx_memalign(32, (size_t)frame_size);
if (!ybf->buffer_alloc)
return -1;
ybf->buffer_alloc_sz = (int)frame_size;
// This memset is needed for fixing valgrind error from C loop filter
// due to access uninitialized memory in frame border. It could be
// removed if border is totally removed.
memset(ybf->buffer_alloc, 0, ybf->buffer_alloc_sz);
}
/* Only support allocating buffers that have a border that's a multiple
* of 32. The border restriction is required to get 16-byte alignment of
* the start of the chroma rows without introducing an arbitrary gap
* between planes, which would break the semantics of things like
* vpx_img_set_rect(). */
if (border & 0x1f)
return -3;
ybf->y_crop_width = width;
ybf->y_crop_height = height;
ybf->y_width = aligned_width;
ybf->y_height = aligned_height;
ybf->y_stride = y_stride;
ybf->uv_crop_width = (width + ss_x) >> ss_x;
ybf->uv_crop_height = (height + ss_y) >> ss_y;
ybf->uv_width = uv_width;
ybf->uv_height = uv_height;
ybf->uv_stride = uv_stride;
ybf->border = border;
ybf->frame_size = (int)frame_size;
ybf->subsampling_x = ss_x;
ybf->subsampling_y = ss_y;
buf = ybf->buffer_alloc;
#if CONFIG_VP9_HIGHBITDEPTH
if (use_highbitdepth) {
// Store uint16 addresses when using 16bit framebuffers
buf = CONVERT_TO_BYTEPTR(ybf->buffer_alloc);
ybf->flags = YV12_FLAG_HIGHBITDEPTH;
} else {
ybf->flags = 0;
}
#endif // CONFIG_VP9_HIGHBITDEPTH
ybf->y_buffer = (uint8_t *)yv12_align_addr(
buf + (border * y_stride) + border, vp9_byte_align);
ybf->u_buffer = (uint8_t *)yv12_align_addr(
buf + yplane_size + (uv_border_h * uv_stride) + uv_border_w,
vp9_byte_align);
ybf->v_buffer = (uint8_t *)yv12_align_addr(
buf + yplane_size + uvplane_size + (uv_border_h * uv_stride) +
uv_border_w, vp9_byte_align);
#if CONFIG_ALPHA
ybf->alpha_width = alpha_width;
ybf->alpha_height = alpha_height;
ybf->alpha_stride = alpha_stride;
ybf->alpha_buffer = (uint8_t *)yv12_align_addr(
buf + yplane_size + 2 * uvplane_size +
(alpha_border_h * alpha_stride) + alpha_border_w, vp9_byte_align);
#endif
ybf->corrupted = 0; /* assume not corrupted by errors */
return 0;
}
return -2;
}
int vp9_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height,
int ss_x, int ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
int use_highbitdepth,
#endif
int border,
int byte_alignment) {
if (ybf) {
vp9_free_frame_buffer(ybf);
return vp9_realloc_frame_buffer(ybf, width, height, ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
use_highbitdepth,
#endif
border, byte_alignment, NULL, NULL, NULL);
}
return -2;
}
#endif

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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 <assert.h>
#include "./vpx_config.h"
#include "./vpx_scale_rtcd.h"
#include "vpx/vpx_integer.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_ports/mem.h"
#include "vpx_scale/yv12config.h"
#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
#include "vp9/common/vp9_common.h"
#endif
static void extend_plane(uint8_t *const src, int src_stride,
int width, int height,
int extend_top, int extend_left,
int extend_bottom, int extend_right) {
int i;
const int linesize = extend_left + extend_right + width;
/* copy the left and right most columns out */
uint8_t *src_ptr1 = src;
uint8_t *src_ptr2 = src + width - 1;
uint8_t *dst_ptr1 = src - extend_left;
uint8_t *dst_ptr2 = src + width;
for (i = 0; i < height; ++i) {
memset(dst_ptr1, src_ptr1[0], extend_left);
memset(dst_ptr2, src_ptr2[0], extend_right);
src_ptr1 += src_stride;
src_ptr2 += src_stride;
dst_ptr1 += src_stride;
dst_ptr2 += src_stride;
}
/* Now copy the top and bottom lines into each line of the respective
* borders
*/
src_ptr1 = src - extend_left;
src_ptr2 = src + src_stride * (height - 1) - extend_left;
dst_ptr1 = src + src_stride * -extend_top - extend_left;
dst_ptr2 = src + src_stride * height - extend_left;
for (i = 0; i < extend_top; ++i) {
memcpy(dst_ptr1, src_ptr1, linesize);
dst_ptr1 += src_stride;
}
for (i = 0; i < extend_bottom; ++i) {
memcpy(dst_ptr2, src_ptr2, linesize);
dst_ptr2 += src_stride;
}
}
#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
static void extend_plane_high(uint8_t *const src8, int src_stride,
int width, int height,
int extend_top, int extend_left,
int extend_bottom, int extend_right) {
int i;
const int linesize = extend_left + extend_right + width;
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
/* copy the left and right most columns out */
uint16_t *src_ptr1 = src;
uint16_t *src_ptr2 = src + width - 1;
uint16_t *dst_ptr1 = src - extend_left;
uint16_t *dst_ptr2 = src + width;
for (i = 0; i < height; ++i) {
vpx_memset16(dst_ptr1, src_ptr1[0], extend_left);
vpx_memset16(dst_ptr2, src_ptr2[0], extend_right);
src_ptr1 += src_stride;
src_ptr2 += src_stride;
dst_ptr1 += src_stride;
dst_ptr2 += src_stride;
}
/* Now copy the top and bottom lines into each line of the respective
* borders
*/
src_ptr1 = src - extend_left;
src_ptr2 = src + src_stride * (height - 1) - extend_left;
dst_ptr1 = src + src_stride * -extend_top - extend_left;
dst_ptr2 = src + src_stride * height - extend_left;
for (i = 0; i < extend_top; ++i) {
memcpy(dst_ptr1, src_ptr1, linesize * sizeof(uint16_t));
dst_ptr1 += src_stride;
}
for (i = 0; i < extend_bottom; ++i) {
memcpy(dst_ptr2, src_ptr2, linesize * sizeof(uint16_t));
dst_ptr2 += src_stride;
}
}
#endif
void vp8_yv12_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf) {
const int uv_border = ybf->border / 2;
assert(ybf->border % 2 == 0);
assert(ybf->y_height - ybf->y_crop_height < 16);
assert(ybf->y_width - ybf->y_crop_width < 16);
assert(ybf->y_height - ybf->y_crop_height >= 0);
assert(ybf->y_width - ybf->y_crop_width >= 0);
#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
if (ybf->flags & YV12_FLAG_HIGHBITDEPTH) {
extend_plane_high(
ybf->y_buffer, ybf->y_stride,
ybf->y_crop_width, ybf->y_crop_height,
ybf->border, ybf->border,
ybf->border + ybf->y_height - ybf->y_crop_height,
ybf->border + ybf->y_width - ybf->y_crop_width);
extend_plane_high(
ybf->u_buffer, ybf->uv_stride,
ybf->uv_crop_width, ybf->uv_crop_height,
uv_border, uv_border,
uv_border + ybf->uv_height - ybf->uv_crop_height,
uv_border + ybf->uv_width - ybf->uv_crop_width);
extend_plane_high(
ybf->v_buffer, ybf->uv_stride,
ybf->uv_crop_width, ybf->uv_crop_height,
uv_border, uv_border,
uv_border + ybf->uv_height - ybf->uv_crop_height,
uv_border + ybf->uv_width - ybf->uv_crop_width);
return;
}
#endif
extend_plane(ybf->y_buffer, ybf->y_stride,
ybf->y_crop_width, ybf->y_crop_height,
ybf->border, ybf->border,
ybf->border + ybf->y_height - ybf->y_crop_height,
ybf->border + ybf->y_width - ybf->y_crop_width);
extend_plane(ybf->u_buffer, ybf->uv_stride,
ybf->uv_crop_width, ybf->uv_crop_height,
uv_border, uv_border,
uv_border + ybf->uv_height - ybf->uv_crop_height,
uv_border + ybf->uv_width - ybf->uv_crop_width);
extend_plane(ybf->v_buffer, ybf->uv_stride,
ybf->uv_crop_width, ybf->uv_crop_height,
uv_border, uv_border,
uv_border + ybf->uv_height - ybf->uv_crop_height,
uv_border + ybf->uv_width - ybf->uv_crop_width);
}
#if CONFIG_VP9
static void extend_frame(YV12_BUFFER_CONFIG *const ybf, int ext_size) {
const int c_w = ybf->uv_crop_width;
const int c_h = ybf->uv_crop_height;
const int ss_x = ybf->uv_width < ybf->y_width;
const int ss_y = ybf->uv_height < ybf->y_height;
const int c_et = ext_size >> ss_y;
const int c_el = ext_size >> ss_x;
const int c_eb = c_et + ybf->uv_height - ybf->uv_crop_height;
const int c_er = c_el + ybf->uv_width - ybf->uv_crop_width;
assert(ybf->y_height - ybf->y_crop_height < 16);
assert(ybf->y_width - ybf->y_crop_width < 16);
assert(ybf->y_height - ybf->y_crop_height >= 0);
assert(ybf->y_width - ybf->y_crop_width >= 0);
#if CONFIG_VP9_HIGHBITDEPTH
if (ybf->flags & YV12_FLAG_HIGHBITDEPTH) {
extend_plane_high(ybf->y_buffer, ybf->y_stride,
ybf->y_crop_width, ybf->y_crop_height,
ext_size, ext_size,
ext_size + ybf->y_height - ybf->y_crop_height,
ext_size + ybf->y_width - ybf->y_crop_width);
extend_plane_high(ybf->u_buffer, ybf->uv_stride,
c_w, c_h, c_et, c_el, c_eb, c_er);
extend_plane_high(ybf->v_buffer, ybf->uv_stride,
c_w, c_h, c_et, c_el, c_eb, c_er);
return;
}
#endif
extend_plane(ybf->y_buffer, ybf->y_stride,
ybf->y_crop_width, ybf->y_crop_height,
ext_size, ext_size,
ext_size + ybf->y_height - ybf->y_crop_height,
ext_size + ybf->y_width - ybf->y_crop_width);
extend_plane(ybf->u_buffer, ybf->uv_stride,
c_w, c_h, c_et, c_el, c_eb, c_er);
extend_plane(ybf->v_buffer, ybf->uv_stride,
c_w, c_h, c_et, c_el, c_eb, c_er);
}
void vp9_extend_frame_borders_c(YV12_BUFFER_CONFIG *ybf) {
extend_frame(ybf, ybf->border);
}
void vp9_extend_frame_inner_borders_c(YV12_BUFFER_CONFIG *ybf) {
const int inner_bw = (ybf->border > VP9INNERBORDERINPIXELS) ?
VP9INNERBORDERINPIXELS : ybf->border;
extend_frame(ybf, inner_bw);
}
#if CONFIG_VP9_HIGHBITDEPTH
void memcpy_short_addr(uint8_t *dst8, const uint8_t *src8, int num) {
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
memcpy(dst, src, num * sizeof(uint16_t));
}
#endif // CONFIG_VP9_HIGHBITDEPTH
#endif // CONFIG_VP9
// Copies the source image into the destination image and updates the
// destination's UMV borders.
// Note: The frames are assumed to be identical in size.
void vp8_yv12_copy_frame_c(const YV12_BUFFER_CONFIG *src_ybc,
YV12_BUFFER_CONFIG *dst_ybc) {
int row;
const uint8_t *src = src_ybc->y_buffer;
uint8_t *dst = dst_ybc->y_buffer;
#if 0
/* These assertions are valid in the codec, but the libvpx-tester uses
* this code slightly differently.
*/
assert(src_ybc->y_width == dst_ybc->y_width);
assert(src_ybc->y_height == dst_ybc->y_height);
#endif
#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
if (src_ybc->flags & YV12_FLAG_HIGHBITDEPTH) {
assert(dst_ybc->flags & YV12_FLAG_HIGHBITDEPTH);
for (row = 0; row < src_ybc->y_height; ++row) {
memcpy_short_addr(dst, src, src_ybc->y_width);
src += src_ybc->y_stride;
dst += dst_ybc->y_stride;
}
src = src_ybc->u_buffer;
dst = dst_ybc->u_buffer;
for (row = 0; row < src_ybc->uv_height; ++row) {
memcpy_short_addr(dst, src, src_ybc->uv_width);
src += src_ybc->uv_stride;
dst += dst_ybc->uv_stride;
}
src = src_ybc->v_buffer;
dst = dst_ybc->v_buffer;
for (row = 0; row < src_ybc->uv_height; ++row) {
memcpy_short_addr(dst, src, src_ybc->uv_width);
src += src_ybc->uv_stride;
dst += dst_ybc->uv_stride;
}
vp8_yv12_extend_frame_borders_c(dst_ybc);
return;
} else {
assert(!(dst_ybc->flags & YV12_FLAG_HIGHBITDEPTH));
}
#endif
for (row = 0; row < src_ybc->y_height; ++row) {
memcpy(dst, src, src_ybc->y_width);
src += src_ybc->y_stride;
dst += dst_ybc->y_stride;
}
src = src_ybc->u_buffer;
dst = dst_ybc->u_buffer;
for (row = 0; row < src_ybc->uv_height; ++row) {
memcpy(dst, src, src_ybc->uv_width);
src += src_ybc->uv_stride;
dst += dst_ybc->uv_stride;
}
src = src_ybc->v_buffer;
dst = dst_ybc->v_buffer;
for (row = 0; row < src_ybc->uv_height; ++row) {
memcpy(dst, src, src_ybc->uv_width);
src += src_ybc->uv_stride;
dst += dst_ybc->uv_stride;
}
vp8_yv12_extend_frame_borders_c(dst_ybc);
}
void vpx_yv12_copy_y_c(const YV12_BUFFER_CONFIG *src_ybc,
YV12_BUFFER_CONFIG *dst_ybc) {
int row;
const uint8_t *src = src_ybc->y_buffer;
uint8_t *dst = dst_ybc->y_buffer;
#if CONFIG_VP9 && CONFIG_VP9_HIGHBITDEPTH
if (src_ybc->flags & YV12_FLAG_HIGHBITDEPTH) {
const uint16_t *src16 = CONVERT_TO_SHORTPTR(src);
uint16_t *dst16 = CONVERT_TO_SHORTPTR(dst);
for (row = 0; row < src_ybc->y_height; ++row) {
memcpy(dst16, src16, src_ybc->y_width * sizeof(uint16_t));
src16 += src_ybc->y_stride;
dst16 += dst_ybc->y_stride;
}
return;
}
#endif
for (row = 0; row < src_ybc->y_height; ++row) {
memcpy(dst, src, src_ybc->y_width);
src += src_ybc->y_stride;
dst += dst_ybc->y_stride;
}
}

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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.
*/
#ifndef VPX_SCALE_VPX_SCALE_H_
#define VPX_SCALE_VPX_SCALE_H_
#include "vpx_scale/yv12config.h"
extern void vpx_scale_frame(YV12_BUFFER_CONFIG *src,
YV12_BUFFER_CONFIG *dst,
unsigned char *temp_area,
unsigned char temp_height,
unsigned int hscale,
unsigned int hratio,
unsigned int vscale,
unsigned int vratio,
unsigned int interlaced);
#endif // VPX_SCALE_VPX_SCALE_H_

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media/libvpx/vpx_scale/vpx_scale_rtcd.c Normal file
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/*
* Copyright (c) 2011 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"
#define RTCD_C
#include "./vpx_scale_rtcd.h"
#include "vpx_ports/vpx_once.h"
#ifdef _MSC_VER
#include <intrin.h>
#endif
void vpx_scale_rtcd()
{
once(setup_rtcd_internal);
}

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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.
*/
#ifndef VPX_SCALE_YV12CONFIG_H_
#define VPX_SCALE_YV12CONFIG_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "./vpx_config.h"
#include "vpx/vpx_codec.h"
#include "vpx/vpx_frame_buffer.h"
#include "vpx/vpx_integer.h"
#define VP8BORDERINPIXELS 32
#define VP9INNERBORDERINPIXELS 96
#define VP9_INTERP_EXTEND 4
#define VP9_ENC_BORDER_IN_PIXELS 160
#define VP9_DEC_BORDER_IN_PIXELS 32
typedef struct yv12_buffer_config {
int y_width;
int y_height;
int y_crop_width;
int y_crop_height;
int y_stride;
int uv_width;
int uv_height;
int uv_crop_width;
int uv_crop_height;
int uv_stride;
int alpha_width;
int alpha_height;
int alpha_stride;
uint8_t *y_buffer;
uint8_t *u_buffer;
uint8_t *v_buffer;
uint8_t *alpha_buffer;
uint8_t *buffer_alloc;
int buffer_alloc_sz;
int border;
int frame_size;
int subsampling_x;
int subsampling_y;
unsigned int bit_depth;
vpx_color_space_t color_space;
int corrupted;
int flags;
} YV12_BUFFER_CONFIG;
#define YV12_FLAG_HIGHBITDEPTH 8
int vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height, int border);
int vp8_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height, int border);
int vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf);
int vp9_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height, int ss_x, int ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
int use_highbitdepth,
#endif
int border, int byte_alignment);
// Updates the yv12 buffer config with the frame buffer. |byte_alignment| must
// be a power of 2, from 32 to 1024. 0 sets legacy alignment. If cb is not
// NULL, then libvpx is using the frame buffer callbacks to handle memory.
// If cb is not NULL, libvpx will call cb with minimum size in bytes needed
// to decode the current frame. If cb is NULL, libvpx will allocate memory
// internally to decode the current frame. Returns 0 on success. Returns < 0
// on failure.
int vp9_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
int width, int height, int ss_x, int ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
int use_highbitdepth,
#endif
int border,
int byte_alignment,
vpx_codec_frame_buffer_t *fb,
vpx_get_frame_buffer_cb_fn_t cb,
void *cb_priv);
int vp9_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
#ifdef __cplusplus
}
#endif
#endif // VPX_SCALE_YV12CONFIG_H_