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/* |
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* Copyright (c) 2000 Fabrice Bellard |
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* Copyright (c) 2002 Francois Revol |
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* Copyright (c) 2006 Baptiste Coudurier |
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* Copyright (c) 2018 Bjorn Roche |
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* Copyright (c) 2018 Paul B Mahol |
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* |
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* first version by Francois Revol <revol@free.fr> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* GIF encoder |
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* @see http://www.w3.org/Graphics/GIF/spec-gif89a.txt |
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*/ |
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#define BITSTREAM_WRITER_LE |
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#include "libavutil/opt.h" |
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#include "libavutil/imgutils.h" |
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#include "avcodec.h" |
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#include "bytestream.h" |
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#include "internal.h" |
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#include "lzw.h" |
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#include "gif.h" |
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#include "put_bits.h" |
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#define DEFAULT_TRANSPARENCY_INDEX 0x1f |
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typedef struct GIFContext { |
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const AVClass *class; |
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LZWState *lzw; |
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uint8_t *buf; |
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int buf_size; |
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AVFrame *last_frame; |
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int flags; |
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int image; |
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uint32_t palette[AVPALETTE_COUNT]; ///< local reference palette for !pal8 |
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int palette_loaded; |
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int transparent_index; |
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uint8_t *tmpl; ///< temporary line buffer |
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} GIFContext; |
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enum { |
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GF_OFFSETTING = 1<<0, |
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GF_TRANSDIFF = 1<<1, |
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}; |
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1063 |
static int is_image_translucent(AVCodecContext *avctx, |
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const uint8_t *buf, const int linesize) |
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{ |
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1063 |
GIFContext *s = avctx->priv_data; |
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1063 |
int trans = s->transparent_index; |
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✓✗ |
1063 |
if (trans < 0) |
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1063 |
return 0; |
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for (int y = 0; y < avctx->height; y++) { |
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for (int x = 0; x < avctx->width; x++) { |
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if (buf[x] == trans) { |
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return 1; |
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} |
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} |
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buf += linesize; |
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} |
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return 0; |
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} |
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static int get_palette_transparency_index(const uint32_t *palette) |
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{ |
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int transparent_color_index = -1; |
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unsigned i, smallest_alpha = 0xff; |
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✓✓ |
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if (!palette) |
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return -1; |
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✓✓ |
2313 |
for (i = 0; i < AVPALETTE_COUNT; i++) { |
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2304 |
const uint32_t v = palette[i]; |
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✓✓ |
2304 |
if (v >> 24 < smallest_alpha) { |
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smallest_alpha = v >> 24; |
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transparent_color_index = i; |
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} |
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} |
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✓✓ |
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return smallest_alpha < 128 ? transparent_color_index : -1; |
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} |
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1056 |
static int pick_palette_entry(const uint8_t *buf, int linesize, int w, int h) |
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{ |
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int histogram[AVPALETTE_COUNT] = {0}; |
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int x, y, i; |
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✓✓ |
33543 |
for (y = 0; y < h; y++) { |
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✓✓ |
3190262 |
for (x = 0; x < w; x++) |
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3157775 |
histogram[buf[x]]++; |
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32487 |
buf += linesize; |
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} |
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✓✓ |
7312 |
for (i = 0; i < FF_ARRAY_ELEMS(histogram); i++) |
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✓✓ |
7288 |
if (!histogram[i]) |
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1032 |
return i; |
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return -1; |
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} |
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static void gif_crop_translucent(AVCodecContext *avctx, |
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const uint8_t *buf, const int linesize, |
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int *width, int *height, |
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int *x_start, int *y_start) |
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{ |
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GIFContext *s = avctx->priv_data; |
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int trans = s->transparent_index; |
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/* Crop image */ |
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if ((s->flags & GF_OFFSETTING) && trans >= 0) { |
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const int w = avctx->width; |
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const int h = avctx->height; |
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int x_end = w - 1, |
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y_end = h - 1; |
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// crop top |
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while (*y_start < y_end) { |
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int is_trans = 1; |
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for (int i = 0; i < w; i++) { |
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if (buf[linesize * *y_start + i] != trans) { |
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is_trans = 0; |
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break; |
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} |
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} |
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if (!is_trans) |
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break; |
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(*y_start)++; |
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} |
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// crop bottom |
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while (y_end > *y_start) { |
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int is_trans = 1; |
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for (int i = 0; i < w; i++) { |
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if (buf[linesize * y_end + i] != trans) { |
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is_trans = 0; |
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break; |
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} |
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} |
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if (!is_trans) |
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break; |
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y_end--; |
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} |
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164 |
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// crop left |
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while (*x_start < x_end) { |
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int is_trans = 1; |
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for (int i = *y_start; i < y_end; i++) { |
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if (buf[linesize * i + *x_start] != trans) { |
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is_trans = 0; |
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break; |
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} |
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} |
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if (!is_trans) |
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break; |
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(*x_start)++; |
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} |
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// crop right |
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while (x_end > *x_start) { |
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int is_trans = 1; |
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for (int i = *y_start; i < y_end; i++) { |
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if (buf[linesize * i + x_end] != trans) { |
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is_trans = 0; |
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break; |
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} |
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} |
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if (!is_trans) |
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break; |
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x_end--; |
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} |
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*height = y_end + 1 - *y_start; |
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*width = x_end + 1 - *x_start; |
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av_log(avctx, AV_LOG_DEBUG,"%dx%d image at pos (%d;%d) [area:%dx%d]\n", |
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*width, *height, *x_start, *y_start, avctx->width, avctx->height); |
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} |
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} |
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1063 |
static void gif_crop_opaque(AVCodecContext *avctx, |
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const uint32_t *palette, |
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const uint8_t *buf, const int linesize, |
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int *width, int *height, int *x_start, int *y_start) |
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{ |
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GIFContext *s = avctx->priv_data; |
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/* Crop image */ |
207 |
✓✗✓✓ ✓✗ |
1063 |
if ((s->flags & GF_OFFSETTING) && s->last_frame && !palette) { |
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1056 |
const uint8_t *ref = s->last_frame->data[0]; |
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1056 |
const int ref_linesize = s->last_frame->linesize[0]; |
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1056 |
int x_end = avctx->width - 1, |
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1056 |
y_end = avctx->height - 1; |
212 |
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213 |
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/* skip common lines */ |
214 |
✓✗ |
100704 |
while (*y_start < y_end) { |
215 |
✓✓ |
100704 |
if (memcmp(ref + *y_start*ref_linesize, buf + *y_start*linesize, *width)) |
216 |
|
1056 |
break; |
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99648 |
(*y_start)++; |
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} |
219 |
✓✗ |
99777 |
while (y_end > *y_start) { |
220 |
✓✓ |
99777 |
if (memcmp(ref + y_end*ref_linesize, buf + y_end*linesize, *width)) |
221 |
|
1056 |
break; |
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98721 |
y_end--; |
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} |
224 |
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1056 |
*height = y_end + 1 - *y_start; |
225 |
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226 |
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/* skip common columns */ |
227 |
✓✗ |
96923 |
while (*x_start < x_end) { |
228 |
|
96923 |
int same_column = 1; |
229 |
✓✓ |
2498501 |
for (int y = *y_start; y <= y_end; y++) { |
230 |
✓✓ |
2402634 |
if (ref[y*ref_linesize + *x_start] != buf[y*linesize + *x_start]) { |
231 |
|
1056 |
same_column = 0; |
232 |
|
1056 |
break; |
233 |
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} |
234 |
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} |
235 |
✓✓ |
96923 |
if (!same_column) |
236 |
|
1056 |
break; |
237 |
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95867 |
(*x_start)++; |
238 |
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} |
239 |
✓✗ |
104460 |
while (x_end > *x_start) { |
240 |
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104460 |
int same_column = 1; |
241 |
✓✓ |
2546113 |
for (int y = *y_start; y <= y_end; y++) { |
242 |
✓✓ |
2442709 |
if (ref[y*ref_linesize + x_end] != buf[y*linesize + x_end]) { |
243 |
|
1056 |
same_column = 0; |
244 |
|
1056 |
break; |
245 |
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} |
246 |
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} |
247 |
✓✓ |
104460 |
if (!same_column) |
248 |
|
1056 |
break; |
249 |
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103404 |
x_end--; |
250 |
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} |
251 |
|
1056 |
*width = x_end + 1 - *x_start; |
252 |
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253 |
|
1056 |
av_log(avctx, AV_LOG_DEBUG,"%dx%d image at pos (%d;%d) [area:%dx%d]\n", |
254 |
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*width, *height, *x_start, *y_start, avctx->width, avctx->height); |
255 |
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} |
256 |
|
1063 |
} |
257 |
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258 |
|
1063 |
static int gif_image_write_image(AVCodecContext *avctx, |
259 |
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uint8_t **bytestream, uint8_t *end, |
260 |
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const uint32_t *palette, |
261 |
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const uint8_t *buf, const int linesize, |
262 |
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AVPacket *pkt) |
263 |
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{ |
264 |
|
1063 |
GIFContext *s = avctx->priv_data; |
265 |
|
1063 |
int disposal, len = 0, height = avctx->height, width = avctx->width, x, y; |
266 |
|
1063 |
int x_start = 0, y_start = 0, trans = s->transparent_index; |
267 |
✓✗✓✓ ✓✗ |
1063 |
int bcid = -1, honor_transparency = (s->flags & GF_TRANSDIFF) && s->last_frame && !palette; |
268 |
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const uint8_t *ptr; |
269 |
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|
270 |
✓✗✗✓
|
1063 |
if (!s->image && is_image_translucent(avctx, buf, linesize)) { |
271 |
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gif_crop_translucent(avctx, buf, linesize, &width, &height, &x_start, &y_start); |
272 |
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honor_transparency = 0; |
273 |
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disposal = GCE_DISPOSAL_BACKGROUND; |
274 |
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} else { |
275 |
|
1063 |
gif_crop_opaque(avctx, palette, buf, linesize, &width, &height, &x_start, &y_start); |
276 |
|
1063 |
disposal = GCE_DISPOSAL_INPLACE; |
277 |
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} |
278 |
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|
279 |
✓✗✓✓
|
1063 |
if (s->image || !avctx->frame_number) { /* GIF header */ |
280 |
✓✓ |
7 |
const uint32_t *global_palette = palette ? palette : s->palette; |
281 |
|
7 |
const AVRational sar = avctx->sample_aspect_ratio; |
282 |
|
7 |
int64_t aspect = 0; |
283 |
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|
284 |
✗✓✗✗
|
7 |
if (sar.num > 0 && sar.den > 0) { |
285 |
|
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aspect = sar.num * 64LL / sar.den - 15; |
286 |
|
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if (aspect < 0 || aspect > 255) |
287 |
|
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aspect = 0; |
288 |
|
|
} |
289 |
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|
290 |
|
7 |
bytestream_put_buffer(bytestream, gif89a_sig, sizeof(gif89a_sig)); |
291 |
|
7 |
bytestream_put_le16(bytestream, avctx->width); |
292 |
|
7 |
bytestream_put_le16(bytestream, avctx->height); |
293 |
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|
294 |
|
7 |
bcid = get_palette_transparency_index(global_palette); |
295 |
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|
296 |
|
7 |
bytestream_put_byte(bytestream, 0xf7); /* flags: global clut, 256 entries */ |
297 |
✓✓ |
7 |
bytestream_put_byte(bytestream, bcid < 0 ? DEFAULT_TRANSPARENCY_INDEX : bcid); /* background color index */ |
298 |
|
7 |
bytestream_put_byte(bytestream, aspect); |
299 |
✓✓ |
1799 |
for (int i = 0; i < 256; i++) { |
300 |
|
1792 |
const uint32_t v = global_palette[i] & 0xffffff; |
301 |
|
1792 |
bytestream_put_be24(bytestream, v); |
302 |
|
|
} |
303 |
|
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} |
304 |
|
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|
305 |
✓✓✓✗
|
1063 |
if (honor_transparency && trans < 0) { |
306 |
|
1056 |
trans = pick_palette_entry(buf + y_start*linesize + x_start, |
307 |
|
|
linesize, width, height); |
308 |
✓✓ |
1056 |
if (trans < 0) // TODO, patch welcome |
309 |
|
24 |
av_log(avctx, AV_LOG_DEBUG, "No available color, can not use transparency\n"); |
310 |
|
|
} |
311 |
|
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|
312 |
✓✓ |
1063 |
if (trans < 0) |
313 |
|
31 |
honor_transparency = 0; |
314 |
|
|
|
315 |
✓✓✓✗
|
1063 |
bcid = honor_transparency || disposal == GCE_DISPOSAL_BACKGROUND ? trans : get_palette_transparency_index(palette); |
316 |
|
|
|
317 |
|
|
/* graphic control extension */ |
318 |
|
1063 |
bytestream_put_byte(bytestream, GIF_EXTENSION_INTRODUCER); |
319 |
|
1063 |
bytestream_put_byte(bytestream, GIF_GCE_EXT_LABEL); |
320 |
|
1063 |
bytestream_put_byte(bytestream, 0x04); /* block size */ |
321 |
|
1063 |
bytestream_put_byte(bytestream, disposal<<2 | (bcid >= 0)); |
322 |
|
1063 |
bytestream_put_le16(bytestream, 5); // default delay |
323 |
✓✓ |
1063 |
bytestream_put_byte(bytestream, bcid < 0 ? DEFAULT_TRANSPARENCY_INDEX : bcid); |
324 |
|
1063 |
bytestream_put_byte(bytestream, 0x00); |
325 |
|
|
|
326 |
|
|
/* image block */ |
327 |
|
1063 |
bytestream_put_byte(bytestream, GIF_IMAGE_SEPARATOR); |
328 |
|
1063 |
bytestream_put_le16(bytestream, x_start); |
329 |
|
1063 |
bytestream_put_le16(bytestream, y_start); |
330 |
|
1063 |
bytestream_put_le16(bytestream, width); |
331 |
|
1063 |
bytestream_put_le16(bytestream, height); |
332 |
|
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|
333 |
✓✓ |
1063 |
if (!palette) { |
334 |
|
1062 |
bytestream_put_byte(bytestream, 0x00); /* flags */ |
335 |
|
|
} else { |
336 |
|
|
unsigned i; |
337 |
|
1 |
bytestream_put_byte(bytestream, 1<<7 | 0x7); /* flags */ |
338 |
✓✓ |
257 |
for (i = 0; i < AVPALETTE_COUNT; i++) { |
339 |
|
256 |
const uint32_t v = palette[i]; |
340 |
|
256 |
bytestream_put_be24(bytestream, v); |
341 |
|
|
} |
342 |
|
|
} |
343 |
|
|
|
344 |
|
1063 |
bytestream_put_byte(bytestream, 0x08); |
345 |
|
|
|
346 |
|
1063 |
ff_lzw_encode_init(s->lzw, s->buf, s->buf_size, |
347 |
|
|
12, FF_LZW_GIF, 1); |
348 |
|
|
|
349 |
|
1063 |
ptr = buf + y_start*linesize + x_start; |
350 |
✓✓ |
1063 |
if (honor_transparency) { |
351 |
|
1032 |
const int ref_linesize = s->last_frame->linesize[0]; |
352 |
|
1032 |
const uint8_t *ref = s->last_frame->data[0] + y_start*ref_linesize + x_start; |
353 |
|
|
|
354 |
✓✓ |
26607 |
for (y = 0; y < height; y++) { |
355 |
|
25575 |
memcpy(s->tmpl, ptr, width); |
356 |
✓✓ |
750326 |
for (x = 0; x < width; x++) |
357 |
✓✓ |
724751 |
if (ref[x] == ptr[x]) |
358 |
|
367271 |
s->tmpl[x] = trans; |
359 |
|
25575 |
len += ff_lzw_encode(s->lzw, s->tmpl, width); |
360 |
|
25575 |
ptr += linesize; |
361 |
|
25575 |
ref += ref_linesize; |
362 |
|
|
} |
363 |
|
|
} else { |
364 |
✓✓ |
8533 |
for (y = 0; y < height; y++) { |
365 |
|
8502 |
len += ff_lzw_encode(s->lzw, ptr, width); |
366 |
|
8502 |
ptr += linesize; |
367 |
|
|
} |
368 |
|
|
} |
369 |
|
1063 |
len += ff_lzw_encode_flush(s->lzw); |
370 |
|
|
|
371 |
|
1063 |
ptr = s->buf; |
372 |
✓✓ |
10314 |
while (len > 0) { |
373 |
|
9251 |
int size = FFMIN(255, len); |
374 |
|
9251 |
bytestream_put_byte(bytestream, size); |
375 |
✗✓ |
9251 |
if (end - *bytestream < size) |
376 |
|
|
return -1; |
377 |
|
9251 |
bytestream_put_buffer(bytestream, ptr, size); |
378 |
|
9251 |
ptr += size; |
379 |
|
9251 |
len -= size; |
380 |
|
|
} |
381 |
|
1063 |
bytestream_put_byte(bytestream, 0x00); /* end of image block */ |
382 |
|
1063 |
return 0; |
383 |
|
|
} |
384 |
|
|
|
385 |
|
7 |
static av_cold int gif_encode_init(AVCodecContext *avctx) |
386 |
|
|
{ |
387 |
|
7 |
GIFContext *s = avctx->priv_data; |
388 |
|
|
|
389 |
✓✗✗✓
|
7 |
if (avctx->width > 65535 || avctx->height > 65535) { |
390 |
|
|
av_log(avctx, AV_LOG_ERROR, "GIF does not support resolutions above 65535x65535\n"); |
391 |
|
|
return AVERROR(EINVAL); |
392 |
|
|
} |
393 |
|
|
|
394 |
|
7 |
s->transparent_index = -1; |
395 |
|
|
|
396 |
|
7 |
s->lzw = av_mallocz(ff_lzw_encode_state_size); |
397 |
|
7 |
s->buf_size = avctx->width*avctx->height*2 + 1000; |
398 |
|
7 |
s->buf = av_malloc(s->buf_size); |
399 |
|
7 |
s->tmpl = av_malloc(avctx->width); |
400 |
✓✗✓✗ ✗✓ |
7 |
if (!s->tmpl || !s->buf || !s->lzw) |
401 |
|
|
return AVERROR(ENOMEM); |
402 |
|
|
|
403 |
✓✓ |
7 |
if (avpriv_set_systematic_pal2(s->palette, avctx->pix_fmt) < 0) |
404 |
✗✓ |
1 |
av_assert0(avctx->pix_fmt == AV_PIX_FMT_PAL8); |
405 |
|
|
|
406 |
|
7 |
return 0; |
407 |
|
|
} |
408 |
|
|
|
409 |
|
1063 |
static int gif_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
410 |
|
|
const AVFrame *pict, int *got_packet) |
411 |
|
|
{ |
412 |
|
1063 |
GIFContext *s = avctx->priv_data; |
413 |
|
|
uint8_t *outbuf_ptr, *end; |
414 |
|
1063 |
const uint32_t *palette = NULL; |
415 |
|
|
int ret; |
416 |
|
|
|
417 |
✗✓ |
1063 |
if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width*avctx->height*7/5 + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0) |
418 |
|
|
return ret; |
419 |
|
1063 |
outbuf_ptr = pkt->data; |
420 |
|
1063 |
end = pkt->data + pkt->size; |
421 |
|
|
|
422 |
✓✓ |
1063 |
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
423 |
|
173 |
palette = (uint32_t*)pict->data[1]; |
424 |
|
|
|
425 |
✓✓ |
173 |
if (!s->palette_loaded) { |
426 |
|
1 |
memcpy(s->palette, palette, AVPALETTE_SIZE); |
427 |
|
1 |
s->transparent_index = get_palette_transparency_index(palette); |
428 |
|
1 |
s->palette_loaded = 1; |
429 |
✓✗ |
172 |
} else if (!memcmp(s->palette, palette, AVPALETTE_SIZE)) { |
430 |
|
172 |
palette = NULL; |
431 |
|
|
} |
432 |
|
|
} |
433 |
|
|
|
434 |
|
1063 |
gif_image_write_image(avctx, &outbuf_ptr, end, palette, |
435 |
|
1063 |
pict->data[0], pict->linesize[0], pkt); |
436 |
✓✓✓✗
|
1063 |
if (!s->last_frame && !s->image) { |
437 |
|
7 |
s->last_frame = av_frame_alloc(); |
438 |
✗✓ |
7 |
if (!s->last_frame) |
439 |
|
|
return AVERROR(ENOMEM); |
440 |
|
|
} |
441 |
|
|
|
442 |
✓✗ |
1063 |
if (!s->image) { |
443 |
|
1063 |
av_frame_unref(s->last_frame); |
444 |
|
1063 |
ret = av_frame_ref(s->last_frame, (AVFrame*)pict); |
445 |
✗✓ |
1063 |
if (ret < 0) |
446 |
|
|
return ret; |
447 |
|
|
} |
448 |
|
|
|
449 |
|
1063 |
pkt->size = outbuf_ptr - pkt->data; |
450 |
✓✗✓✓
|
1063 |
if (s->image || !avctx->frame_number) |
451 |
|
7 |
pkt->flags |= AV_PKT_FLAG_KEY; |
452 |
|
1063 |
*got_packet = 1; |
453 |
|
|
|
454 |
|
1063 |
return 0; |
455 |
|
|
} |
456 |
|
|
|
457 |
|
7 |
static int gif_encode_close(AVCodecContext *avctx) |
458 |
|
|
{ |
459 |
|
7 |
GIFContext *s = avctx->priv_data; |
460 |
|
|
|
461 |
|
7 |
av_freep(&s->lzw); |
462 |
|
7 |
av_freep(&s->buf); |
463 |
|
7 |
s->buf_size = 0; |
464 |
|
7 |
av_frame_free(&s->last_frame); |
465 |
|
7 |
av_freep(&s->tmpl); |
466 |
|
7 |
return 0; |
467 |
|
|
} |
468 |
|
|
|
469 |
|
|
#define OFFSET(x) offsetof(GIFContext, x) |
470 |
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
471 |
|
|
static const AVOption gif_options[] = { |
472 |
|
|
{ "gifflags", "set GIF flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = GF_OFFSETTING|GF_TRANSDIFF}, 0, INT_MAX, FLAGS, "flags" }, |
473 |
|
|
{ "offsetting", "enable picture offsetting", 0, AV_OPT_TYPE_CONST, {.i64=GF_OFFSETTING}, INT_MIN, INT_MAX, FLAGS, "flags" }, |
474 |
|
|
{ "transdiff", "enable transparency detection between frames", 0, AV_OPT_TYPE_CONST, {.i64=GF_TRANSDIFF}, INT_MIN, INT_MAX, FLAGS, "flags" }, |
475 |
|
|
{ "gifimage", "enable encoding only images per frame", OFFSET(image), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS }, |
476 |
|
|
{ NULL } |
477 |
|
|
}; |
478 |
|
|
|
479 |
|
|
static const AVClass gif_class = { |
480 |
|
|
.class_name = "GIF encoder", |
481 |
|
|
.item_name = av_default_item_name, |
482 |
|
|
.option = gif_options, |
483 |
|
|
.version = LIBAVUTIL_VERSION_INT, |
484 |
|
|
}; |
485 |
|
|
|
486 |
|
|
AVCodec ff_gif_encoder = { |
487 |
|
|
.name = "gif", |
488 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("GIF (Graphics Interchange Format)"), |
489 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
490 |
|
|
.id = AV_CODEC_ID_GIF, |
491 |
|
|
.priv_data_size = sizeof(GIFContext), |
492 |
|
|
.init = gif_encode_init, |
493 |
|
|
.encode2 = gif_encode_frame, |
494 |
|
|
.close = gif_encode_close, |
495 |
|
|
.pix_fmts = (const enum AVPixelFormat[]){ |
496 |
|
|
AV_PIX_FMT_RGB8, AV_PIX_FMT_BGR8, AV_PIX_FMT_RGB4_BYTE, AV_PIX_FMT_BGR4_BYTE, |
497 |
|
|
AV_PIX_FMT_GRAY8, AV_PIX_FMT_PAL8, AV_PIX_FMT_NONE |
498 |
|
|
}, |
499 |
|
|
.priv_class = &gif_class, |
500 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP, |
501 |
|
|
}; |