/*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* misc image utilities
*/
+#include "common.h"
#include "imgutils.h"
#include "internal.h"
-#include "libavutil/pixdesc.h"
+#include "intreadwrite.h"
+#include "log.h"
+#include "mathematics.h"
+#include "pixdesc.h"
+#include "rational.h"
void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
const AVPixFmtDescriptor *pixdesc)
for (i = 0; i < 4; i++) {
const AVComponentDescriptor *comp = &(pixdesc->comp[i]);
- if ((comp->step_minus1+1) > max_pixsteps[comp->plane]) {
- max_pixsteps[comp->plane] = comp->step_minus1+1;
+ if (comp->step > max_pixsteps[comp->plane]) {
+ max_pixsteps[comp->plane] = comp->step;
if (max_pixstep_comps)
max_pixstep_comps[comp->plane] = i;
}
}
}
-int av_image_get_linesize(enum PixelFormat pix_fmt, int width, int plane)
+int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)
{
- const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
int max_step [4]; /* max pixel step for each plane */
int max_step_comp[4]; /* the component for each plane which has the max pixel step */
int s;
- if (desc->flags & PIX_FMT_BITSTREAM)
- return (width * (desc->comp[0].step_minus1+1) + 7) >> 3;
+ if (!desc)
+ return AVERROR(EINVAL);
+
+ if (desc->flags & AV_PIX_FMT_FLAG_BITSTREAM)
+ return (width * desc->comp[0].step + 7) >> 3;
av_image_fill_max_pixsteps(max_step, max_step_comp, desc);
s = (max_step_comp[plane] == 1 || max_step_comp[plane] == 2) ? desc->log2_chroma_w : 0;
return max_step[plane] * (((width + (1 << s) - 1)) >> s);
}
-int av_image_fill_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width)
+int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
{
int i;
- const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
int max_step [4]; /* max pixel step for each plane */
int max_step_comp[4]; /* the component for each plane which has the max pixel step */
memset(linesizes, 0, 4*sizeof(linesizes[0]));
- if ((unsigned)pix_fmt >= PIX_FMT_NB || desc->flags & PIX_FMT_HWACCEL)
+ if (!desc || desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
return AVERROR(EINVAL);
- if (desc->flags & PIX_FMT_BITSTREAM) {
- if (width > (INT_MAX -7) / (desc->comp[0].step_minus1+1))
+ if (desc->flags & AV_PIX_FMT_FLAG_BITSTREAM) {
+ if (width > (INT_MAX - 7) / desc->comp[0].step)
return AVERROR(EINVAL);
- linesizes[0] = (width * (desc->comp[0].step_minus1+1) + 7) >> 3;
+ linesizes[0] = (width * desc->comp[0].step + 7) >> 3;
return 0;
}
return 0;
}
-int av_image_fill_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
+int av_image_fill_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt, int height,
uint8_t *ptr, const int linesizes[4])
{
- int i, total_size, size[4], has_plane[4];
+ int i, total_size, size[4] = { 0 }, has_plane[4] = { 0 };
- const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
memset(data , 0, sizeof(data[0])*4);
- memset(size , 0, sizeof(size));
- memset(has_plane, 0, sizeof(has_plane));
- if ((unsigned)pix_fmt >= PIX_FMT_NB || desc->flags & PIX_FMT_HWACCEL)
+ if (!desc || desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
return AVERROR(EINVAL);
data[0] = ptr;
return AVERROR(EINVAL);
size[0] = linesizes[0] * height;
- if (desc->flags & PIX_FMT_PAL) {
+ if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
+ desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) {
size[0] = (size[0] + 3) & ~3;
data[1] = ptr + size[0]; /* palette is stored here as 256 32 bits words */
return size[0] + 256 * 4;
has_plane[desc->comp[i].plane] = 1;
total_size = size[0];
- for (i = 1; has_plane[i] && i < 4; i++) {
+ for (i = 1; i < 4 && has_plane[i]; i++) {
int h, s = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
data[i] = data[i-1] + size[i-1];
h = (height + (1 << s) - 1) >> s;
return total_size;
}
-int ff_set_systematic_pal2(uint32_t pal[256], enum PixelFormat pix_fmt)
+int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
{
int i;
int r, g, b;
switch (pix_fmt) {
- case PIX_FMT_RGB8:
+ case AV_PIX_FMT_RGB8:
r = (i>>5 )*36;
g = ((i>>2)&7)*36;
b = (i&3 )*85;
break;
- case PIX_FMT_BGR8:
+ case AV_PIX_FMT_BGR8:
b = (i>>6 )*85;
g = ((i>>3)&7)*36;
r = (i&7 )*36;
break;
- case PIX_FMT_RGB4_BYTE:
+ case AV_PIX_FMT_RGB4_BYTE:
r = (i>>3 )*255;
g = ((i>>1)&3)*85;
b = (i&1 )*255;
break;
- case PIX_FMT_BGR4_BYTE:
+ case AV_PIX_FMT_BGR4_BYTE:
b = (i>>3 )*255;
g = ((i>>1)&3)*85;
r = (i&1 )*255;
break;
- case PIX_FMT_GRAY8:
+ case AV_PIX_FMT_GRAY8:
r = b = g = i;
break;
default:
return AVERROR(EINVAL);
}
- pal[i] = b + (g<<8) + (r<<16);
+ pal[i] = b + (g << 8) + (r << 16) + (0xFFU << 24);
}
return 0;
}
int av_image_alloc(uint8_t *pointers[4], int linesizes[4],
- int w, int h, enum PixelFormat pix_fmt, int align)
+ int w, int h, enum AVPixelFormat pix_fmt, int align)
{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
int i, ret;
uint8_t *buf;
+ if (!desc)
+ return AVERROR(EINVAL);
+
if ((ret = av_image_check_size(w, h, 0, NULL)) < 0)
return ret;
if ((ret = av_image_fill_linesizes(linesizes, pix_fmt, w)) < 0)
av_free(buf);
return ret;
}
- if (av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_PAL)
- ff_set_systematic_pal2((uint32_t*)pointers[1], pix_fmt);
+ if (desc->flags & AV_PIX_FMT_FLAG_PAL || desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
+ avpriv_set_systematic_pal2((uint32_t*)pointers[1], pix_fmt);
return ret;
}
return AVERROR(EINVAL);
}
+int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
+{
+ int64_t scaled_dim;
+
+ if (!sar.den)
+ return AVERROR(EINVAL);
+
+ if (!sar.num || sar.num == sar.den)
+ return 0;
+
+ if (sar.num < sar.den)
+ scaled_dim = av_rescale_rnd(w, sar.num, sar.den, AV_ROUND_ZERO);
+ else
+ scaled_dim = av_rescale_rnd(h, sar.den, sar.num, AV_ROUND_ZERO);
+
+ if (scaled_dim > 0)
+ return 0;
+
+ return AVERROR(EINVAL);
+}
+
void av_image_copy_plane(uint8_t *dst, int dst_linesize,
const uint8_t *src, int src_linesize,
int bytewidth, int height)
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
const uint8_t *src_data[4], const int src_linesizes[4],
- enum PixelFormat pix_fmt, int width, int height)
+ enum AVPixelFormat pix_fmt, int width, int height)
{
- const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
- if (desc->flags & PIX_FMT_HWACCEL)
+ if (!desc || desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
return;
- if (desc->flags & PIX_FMT_PAL) {
+ if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
+ desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) {
av_image_copy_plane(dst_data[0], dst_linesizes[0],
src_data[0], src_linesizes[0],
width, height);
}
}
-#if FF_API_OLD_IMAGE_NAMES
-void av_fill_image_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
- const AVPixFmtDescriptor *pixdesc)
+int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4],
+ const uint8_t *src, enum AVPixelFormat pix_fmt,
+ int width, int height, int align)
{
- av_image_fill_max_pixsteps(max_pixsteps, max_pixstep_comps, pixdesc);
-}
+ int ret, i;
-int av_get_image_linesize(enum PixelFormat pix_fmt, int width, int plane)
-{
- return av_image_get_linesize(pix_fmt, width, plane);
-}
+ ret = av_image_check_size(width, height, 0, NULL);
+ if (ret < 0)
+ return ret;
-int av_fill_image_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width)
-{
- return av_image_fill_linesizes(linesizes, pix_fmt, width);
+ ret = av_image_fill_linesizes(dst_linesize, pix_fmt, width);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < 4; i++)
+ dst_linesize[i] = FFALIGN(dst_linesize[i], align);
+
+ return av_image_fill_pointers(dst_data, pix_fmt, height, src, dst_linesize);
}
-int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
- uint8_t *ptr, const int linesizes[4])
+int av_image_get_buffer_size(enum AVPixelFormat pix_fmt,
+ int width, int height, int align)
{
- return av_image_fill_pointers(data, pix_fmt, height, ptr, linesizes);
+ uint8_t *data[4];
+ int linesize[4];
+ int ret;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+ if (!desc)
+ return AVERROR_BUG;
+
+ ret = av_image_check_size(width, height, 0, NULL);
+ if (ret < 0)
+ return ret;
+
+ // do not include palette for these pseudo-paletted formats
+ if (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
+ return width * height;
+
+ return av_image_fill_arrays(data, linesize, NULL, pix_fmt,
+ width, height, align);
}
-int av_check_image_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
+int av_image_copy_to_buffer(uint8_t *dst, int dst_size,
+ const uint8_t * const src_data[4],
+ const int src_linesize[4],
+ enum AVPixelFormat pix_fmt,
+ int width, int height, int align)
{
- return av_image_check_size(w, h, log_offset, log_ctx);
+ int i, j, nb_planes = 0, linesize[4];
+ int size = av_image_get_buffer_size(pix_fmt, width, height, align);
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+
+ if (size > dst_size || size < 0 || !desc)
+ return AVERROR(EINVAL);
+
+ for (i = 0; i < desc->nb_components; i++)
+ nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
+
+ nb_planes++;
+
+ av_image_fill_linesizes(linesize, pix_fmt, width);
+ for (i = 0; i < nb_planes; i++) {
+ int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
+ const uint8_t *src = src_data[i];
+ h = (height + (1 << shift) - 1) >> shift;
+
+ for (j = 0; j < h; j++) {
+ memcpy(dst, src, linesize[i]);
+ dst += FFALIGN(linesize[i], align);
+ src += src_linesize[i];
+ }
+ }
+
+ if (desc->flags & AV_PIX_FMT_FLAG_PAL)
+ memcpy((unsigned char *)(((size_t)dst + 3) & ~3),
+ src_data[1], 256 * 4);
+
+ return size;
}
-#endif
projects / ffmpeg / blobdiff