FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/rawdec.c
Date: 2023-12-04 05:51:44
Exec Total Coverage
Lines: 161 271 59.4%
Functions: 3 6 50.0%
Branches: 154 288 53.5%
Line Branch Exec Source
1 /*
2 * Raw Video Decoder
3 * Copyright (c) 2001 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Raw Video Decoder
25 */
26
27 #include "avcodec.h"
28 #include "bswapdsp.h"
29 #include "codec_internal.h"
30 #include "decode.h"
31 #include "get_bits.h"
32 #include "internal.h"
33 #include "raw.h"
34 #include "libavutil/avassert.h"
35 #include "libavutil/buffer.h"
36 #include "libavutil/common.h"
37 #include "libavutil/intreadwrite.h"
38 #include "libavutil/imgutils.h"
39 #include "libavutil/opt.h"
40
41 typedef struct RawVideoContext {
42 AVClass *av_class;
43 AVBufferRef *palette;
44 int frame_size; /* size of the frame in bytes */
45 int flip;
46 int is_1_2_4_8_bpp; // 1, 2, 4 and 8 bpp in avi/mov, 1 and 8 bpp in nut
47 int is_mono;
48 int is_pal8;
49 int is_nut_mono;
50 int is_nut_pal8;
51 int is_yuv2;
52 int is_lt_16bpp; // 16bpp pixfmt and bits_per_coded_sample < 16
53 int tff;
54
55 BswapDSPContext bbdsp;
56 void *bitstream_buf;
57 unsigned int bitstream_buf_size;
58 } RawVideoContext;
59
60 static const AVOption options[]={
61 {"top", "top field first", offsetof(RawVideoContext, tff), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_VIDEO_PARAM},
62 {NULL}
63 };
64
65 static const AVClass rawdec_class = {
66 .class_name = "rawdec",
67 .option = options,
68 .version = LIBAVUTIL_VERSION_INT,
69 };
70
71 1173 static av_cold int raw_init_decoder(AVCodecContext *avctx)
72 {
73 1173 RawVideoContext *context = avctx->priv_data;
74 const AVPixFmtDescriptor *desc;
75
76 1173 ff_bswapdsp_init(&context->bbdsp);
77
78
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 1173 if ( avctx->codec_tag == MKTAG('r','a','w',' ')
79
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 1173 || avctx->codec_tag == MKTAG('N','O','1','6'))
80 ✗ avctx->pix_fmt = avpriv_pix_fmt_find(PIX_FMT_LIST_MOV,
81 ✗ avctx->bits_per_coded_sample);
82
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 1173 else if (avctx->codec_tag == MKTAG('W', 'R', 'A', 'W'))
83 ✗ avctx->pix_fmt = avpriv_pix_fmt_find(PIX_FMT_LIST_AVI,
84 ✗ avctx->bits_per_coded_sample);
85
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 1173 else if (avctx->codec_tag && (avctx->codec_tag & 0xFFFFFF) != MKTAG('B','I','T', 0))
86 599 avctx->pix_fmt = avpriv_pix_fmt_find(PIX_FMT_LIST_RAW, avctx->codec_tag);
87
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 574 else if (avctx->pix_fmt == AV_PIX_FMT_NONE && avctx->bits_per_coded_sample)
88 15 avctx->pix_fmt = avpriv_pix_fmt_find(PIX_FMT_LIST_AVI,
89 15 avctx->bits_per_coded_sample);
90
91 1173 desc = av_pix_fmt_desc_get(avctx->pix_fmt);
92
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 1173 if (!desc) {
93 ✗ av_log(avctx, AV_LOG_ERROR, "Invalid pixel format.\n");
94 ✗ return AVERROR(EINVAL);
95 }
96
97
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 1173 if (desc->flags & AV_PIX_FMT_FLAG_PAL) {
98 8 context->palette = av_buffer_alloc(AVPALETTE_SIZE);
99
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 8 if (!context->palette)
100 ✗ return AVERROR(ENOMEM);
101 8 memset(context->palette->data, 0, AVPALETTE_SIZE);
102
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 8 if (avctx->bits_per_coded_sample == 1)
103 8 memset(context->palette->data, 0xff, 4);
104 }
105
106
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 1173 if ((avctx->extradata_size >= 9 &&
107
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 2 !memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) ||
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 1171 avctx->codec_tag == MKTAG('c','y','u','v') ||
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 1171 avctx->codec_tag == MKTAG(3, 0, 0, 0) ||
110
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 1171 avctx->codec_tag == MKTAG('W','R','A','W'))
111 2 context->flip = 1;
112
113
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 1173 if (avctx->pix_fmt == AV_PIX_FMT_MONOWHITE ||
114
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 1171 avctx->pix_fmt == AV_PIX_FMT_MONOBLACK)
115 4 context->is_mono = 1;
116
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 1169 else if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
117 8 context->is_pal8 = 1;
118
119
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 1173 if (avctx->codec_tag == MKTAG('B','1','W','0') ||
120
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 1172 avctx->codec_tag == MKTAG('B','0','W','1'))
121 2 context->is_nut_mono = 1;
122
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 1171 else if (avctx->codec_tag == MKTAG('P','A','L',8))
123 ✗ context->is_nut_pal8 = 1;
124
125
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 1173 if (avctx->codec_tag == AV_RL32("yuv2") &&
126 ✗ avctx->pix_fmt == AV_PIX_FMT_YUYV422)
127 ✗ context->is_yuv2 = 1;
128
129 1173 return 0;
130 }
131
132 ✗ static void flip(AVCodecContext *avctx, AVFrame *frame)
133 {
134 ✗ frame->data[0] += frame->linesize[0] * (avctx->height - 1);
135 ✗ frame->linesize[0] *= -1;
136 ✗ }
137
138 /*
139 * Scale sample to 16-bit resolution
140 */
141 #define SCALE16(x, bits) (((x) << (16 - (bits))) | ((x) >> (2 * (bits) - 16)))
142
143 /**
144 * Scale buffer to 16 bits per coded sample resolution
145 */
146 #define MKSCALE16(name, r16, w16) \
147 static void name(AVCodecContext *avctx, uint8_t * dst, const uint8_t *buf, int buf_size, int packed) \
148 { \
149 int i; \
150 if (!packed) { \
151 for (i = 0; i + 1 < buf_size; i += 2) \
152 w16(dst + i, SCALE16(r16(buf + i), avctx->bits_per_coded_sample)); \
153 } else { \
154 GetBitContext gb; \
155 init_get_bits(&gb, buf, buf_size * 8); \
156 for (i = 0; i < avctx->width * avctx->height; i++) { \
157 int sample = get_bits(&gb, avctx->bits_per_coded_sample); \
158 w16(dst + i*2, SCALE16(sample, avctx->bits_per_coded_sample)); \
159 } \
160 } \
161 }
162
163 ✗ MKSCALE16(scale16be, AV_RB16, AV_WB16)
164 ✗ MKSCALE16(scale16le, AV_RL16, AV_WL16)
165
166 22793 static int raw_decode(AVCodecContext *avctx, AVFrame *frame,
167 int *got_frame, AVPacket *avpkt)
168 {
169 const AVPixFmtDescriptor *desc;
170 22793 RawVideoContext *context = avctx->priv_data;
171 22793 const uint8_t *buf = avpkt->data;
172 22793 int buf_size = avpkt->size;
173 22793 int linesize_align = 4;
174 int stride;
175 int res, len;
176 int need_copy;
177
178
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 22793 if (avctx->width <= 0) {
179 ✗ av_log(avctx, AV_LOG_ERROR, "width is not set\n");
180 ✗ return AVERROR_INVALIDDATA;
181 }
182
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 22793 if (avctx->height <= 0) {
183 ✗ av_log(avctx, AV_LOG_ERROR, "height is not set\n");
184 ✗ return AVERROR_INVALIDDATA;
185 }
186
187
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 22793 if (context->is_nut_mono)
188 2 stride = avctx->width / 8 + (avctx->width & 7 ? 1 : 0);
189
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 22791 else if (context->is_nut_pal8)
190 ✗ stride = avctx->width;
191 else
192 22791 stride = avpkt->size / avctx->height;
193
194 22793 av_log(avctx, AV_LOG_DEBUG, "PACKET SIZE: %d, STRIDE: %d\n", avpkt->size, stride);
195
196
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 22793 if (stride == 0 || avpkt->size < stride * avctx->height) {
197 1 av_log(avctx, AV_LOG_ERROR, "Packet too small (%d)\n", avpkt->size);
198 1 return AVERROR_INVALIDDATA;
199 }
200
201 22792 desc = av_pix_fmt_desc_get(avctx->pix_fmt);
202
203
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 22792 if ((avctx->bits_per_coded_sample == 8 || avctx->bits_per_coded_sample == 4 ||
204
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 22792 avctx->bits_per_coded_sample == 2 || avctx->bits_per_coded_sample == 1 ||
205
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 22592 (avctx->bits_per_coded_sample == 0 && (context->is_nut_pal8 || context->is_mono)) ) &&
206
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 202 (context->is_mono || context->is_pal8) &&
207
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 202 (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' ') ||
208
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 2 context->is_nut_mono || context->is_nut_pal8)) {
209 202 context->is_1_2_4_8_bpp = 1;
210
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 202 if (context->is_mono) {
211 2 int row_bytes = avctx->width / 8 + (avctx->width & 7 ? 1 : 0);
212 2 context->frame_size = av_image_get_buffer_size(avctx->pix_fmt,
213 2 FFALIGN(row_bytes, 16) * 8,
214 avctx->height, 1);
215 } else
216 200 context->frame_size = av_image_get_buffer_size(avctx->pix_fmt,
217 200 FFALIGN(avctx->width, 16),
218 avctx->height, 1);
219 } else {
220
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 22590 context->is_lt_16bpp = av_get_bits_per_pixel(desc) == 16 && avctx->bits_per_coded_sample > 8 && avctx->bits_per_coded_sample < 16;
221 22590 context->frame_size = av_image_get_buffer_size(avctx->pix_fmt, avctx->width,
222 avctx->height, 1);
223 }
224
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 22792 if (context->frame_size < 0)
225 ✗ return context->frame_size;
226
227
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 22792 need_copy = !avpkt->buf || context->is_1_2_4_8_bpp || context->is_yuv2 || context->is_lt_16bpp;
228
229 22792 frame->pict_type = AV_PICTURE_TYPE_I;
230 22792 frame->flags |= AV_FRAME_FLAG_KEY;
231
232 22792 res = ff_decode_frame_props(avctx, frame);
233
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 22792 if (res < 0)
234 ✗ return res;
235
236
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 22792 if (context->tff >= 0) {
237 ✗ frame->flags |= AV_FRAME_FLAG_INTERLACED;
238 ✗ if (context->tff == 1)
239 ✗ frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
240 }
241
242
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 22792 if ((res = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
243 ✗ return res;
244
245
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 22792 if (need_copy)
246 202 frame->buf[0] = av_buffer_alloc(FFMAX(context->frame_size, buf_size));
247 else
248 22590 frame->buf[0] = av_buffer_ref(avpkt->buf);
249
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 22792 if (!frame->buf[0])
250 ✗ return AVERROR(ENOMEM);
251
252 // 1, 2, 4 and 8 bpp in avi/mov, 1 and 8 bpp in nut
253
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 22792 if (context->is_1_2_4_8_bpp) {
254 202 int i, j, row_pix = 0;
255 202 uint8_t *dst = frame->buf[0]->data;
256
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 202 buf_size = context->frame_size - (context->is_pal8 ? AVPALETTE_SIZE : 0);
257
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 204 if (avctx->bits_per_coded_sample == 8 || context->is_nut_pal8 || context->is_mono) {
258
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 2 int pix_per_byte = context->is_mono ? 8 : 1;
259
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 25346 for (i = 0, j = 0; j < buf_size && i<avpkt->size; i++, j++) {
260 25344 dst[j] = buf[i];
261 25344 row_pix += pix_per_byte;
262
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 25344 if (row_pix >= avctx->width) {
263 576 i += stride - (i % stride) - 1;
264 576 j += 16 - (j % 16) - 1;
265 576 row_pix = 0;
266 }
267 }
268
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 200 } else if (avctx->bits_per_coded_sample == 4) {
269 ✗ for (i = 0, j = 0; 2 * j + 1 < buf_size && i<avpkt->size; i++, j++) {
270 ✗ dst[2 * j + 0] = buf[i] >> 4;
271 ✗ dst[2 * j + 1] = buf[i] & 15;
272 ✗ row_pix += 2;
273 ✗ if (row_pix >= avctx->width) {
274 ✗ i += stride - (i % stride) - 1;
275 ✗ j += 8 - (j % 8) - 1;
276 ✗ row_pix = 0;
277 }
278 }
279
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 200 } else if (avctx->bits_per_coded_sample == 2) {
280 ✗ for (i = 0, j = 0; 4 * j + 3 < buf_size && i<avpkt->size; i++, j++) {
281 ✗ dst[4 * j + 0] = buf[i] >> 6;
282 ✗ dst[4 * j + 1] = buf[i] >> 4 & 3;
283 ✗ dst[4 * j + 2] = buf[i] >> 2 & 3;
284 ✗ dst[4 * j + 3] = buf[i] & 3;
285 ✗ row_pix += 4;
286 ✗ if (row_pix >= avctx->width) {
287 ✗ i += stride - (i % stride) - 1;
288 ✗ j += 4 - (j % 4) - 1;
289 ✗ row_pix = 0;
290 }
291 }
292 } else {
293
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 200 av_assert0(avctx->bits_per_coded_sample == 1);
294
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 1909500 for (i = 0, j = 0; 8 * j + 7 < buf_size && i<avpkt->size; i++, j++) {
295 1909300 dst[8 * j + 0] = buf[i] >> 7;
296 1909300 dst[8 * j + 1] = buf[i] >> 6 & 1;
297 1909300 dst[8 * j + 2] = buf[i] >> 5 & 1;
298 1909300 dst[8 * j + 3] = buf[i] >> 4 & 1;
299 1909300 dst[8 * j + 4] = buf[i] >> 3 & 1;
300 1909300 dst[8 * j + 5] = buf[i] >> 2 & 1;
301 1909300 dst[8 * j + 6] = buf[i] >> 1 & 1;
302 1909300 dst[8 * j + 7] = buf[i] & 1;
303 1909300 row_pix += 8;
304
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 1909300 if (row_pix >= avctx->width) {
305 44900 i += stride - (i % stride) - 1;
306 44900 j += 2 - (j % 2) - 1;
307 44900 row_pix = 0;
308 }
309 }
310 }
311 202 linesize_align = 16;
312 202 buf = dst;
313
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 22590 } else if (context->is_lt_16bpp) {
314 ✗ uint8_t *dst = frame->buf[0]->data;
315 ✗ int packed = (avctx->codec_tag & 0xFFFFFF) == MKTAG('B','I','T', 0);
316 ✗ int swap = avctx->codec_tag >> 24;
317
318 ✗ if (packed && swap) {
319 ✗ av_fast_padded_malloc(&context->bitstream_buf, &context->bitstream_buf_size, buf_size);
320 ✗ if (!context->bitstream_buf)
321 ✗ return AVERROR(ENOMEM);
322 ✗ if (swap == 16)
323 ✗ context->bbdsp.bswap16_buf(context->bitstream_buf, (const uint16_t*)buf, buf_size / 2);
324 ✗ else if (swap == 32)
325 ✗ context->bbdsp.bswap_buf(context->bitstream_buf, (const uint32_t*)buf, buf_size / 4);
326 else
327 ✗ return AVERROR_INVALIDDATA;
328 ✗ buf = context->bitstream_buf;
329 }
330
331 ✗ if (desc->flags & AV_PIX_FMT_FLAG_BE)
332 ✗ scale16be(avctx, dst, buf, buf_size, packed);
333 else
334 ✗ scale16le(avctx, dst, buf, buf_size, packed);
335
336 ✗ buf = dst;
337
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 22590 } else if (need_copy) {
338 ✗ memcpy(frame->buf[0]->data, buf, buf_size);
339 ✗ buf = frame->buf[0]->data;
340 }
341
342
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 22792 if (avctx->codec_tag == MKTAG('A', 'V', '1', 'x') ||
343
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 22792 avctx->codec_tag == MKTAG('A', 'V', 'u', 'p'))
344 ✗ buf += buf_size - context->frame_size;
345
346
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 22792 len = context->frame_size - (avctx->pix_fmt==AV_PIX_FMT_PAL8 ? AVPALETTE_SIZE : 0);
347
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 22792 if (buf_size < len && ((avctx->codec_tag & 0xFFFFFF) != MKTAG('B','I','T', 0) || !need_copy)) {
348 ✗ av_log(avctx, AV_LOG_ERROR, "Invalid buffer size, packet size %d < expected frame_size %d\n", buf_size, len);
349 ✗ av_buffer_unref(&frame->buf[0]);
350 ✗ return AVERROR(EINVAL);
351 }
352
353
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 22792 if ((res = av_image_fill_arrays(frame->data, frame->linesize,
354 buf, avctx->pix_fmt,
355 avctx->width, avctx->height, 1)) < 0) {
356 ✗ av_buffer_unref(&frame->buf[0]);
357 ✗ return res;
358 }
359
360
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 22792 if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
361 int ret;
362
363
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 200 if (!context->palette)
364 ✗ context->palette = av_buffer_alloc(AVPALETTE_SIZE);
365
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 200 if (!context->palette) {
366 ✗ av_buffer_unref(&frame->buf[0]);
367 ✗ return AVERROR(ENOMEM);
368 }
369 200 ret = av_buffer_make_writable(&context->palette);
370
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 200 if (ret < 0) {
371 ✗ av_buffer_unref(&frame->buf[0]);
372 ✗ return ret;
373 }
374
375
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 200 if (ff_copy_palette(context->palette->data, avpkt, avctx)) {
376 #if FF_API_PALETTE_HAS_CHANGED
377 FF_DISABLE_DEPRECATION_WARNINGS
378 4 frame->palette_has_changed = 1;
379 FF_ENABLE_DEPRECATION_WARNINGS
380 #endif
381
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 196 } else if (context->is_nut_pal8) {
382 ✗ int vid_size = avctx->width * avctx->height;
383 ✗ int pal_size = avpkt->size - vid_size;
384
385 ✗ if (avpkt->size > vid_size && pal_size <= AVPALETTE_SIZE) {
386 ✗ const uint8_t *pal = avpkt->data + vid_size;
387 ✗ memcpy(context->palette->data, pal, pal_size);
388 #if FF_API_PALETTE_HAS_CHANGED
389 FF_DISABLE_DEPRECATION_WARNINGS
390 ✗ frame->palette_has_changed = 1;
391 FF_ENABLE_DEPRECATION_WARNINGS
392 #endif
393 }
394 }
395 }
396
397
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 22792 if ((avctx->pix_fmt==AV_PIX_FMT_RGB24 ||
398
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 22727 avctx->pix_fmt==AV_PIX_FMT_BGR24 ||
399
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 22325 avctx->pix_fmt==AV_PIX_FMT_GRAY8 ||
400
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 22324 avctx->pix_fmt==AV_PIX_FMT_RGB555LE ||
401
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 21923 avctx->pix_fmt==AV_PIX_FMT_RGB555BE ||
402
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 21923 avctx->pix_fmt==AV_PIX_FMT_RGB565LE ||
403
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 21722 avctx->pix_fmt==AV_PIX_FMT_MONOWHITE ||
404
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 21721 avctx->pix_fmt==AV_PIX_FMT_MONOBLACK ||
405
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 21720 avctx->pix_fmt==AV_PIX_FMT_PAL8) &&
406
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 1272 FFALIGN(frame->linesize[0], linesize_align) * avctx->height <= buf_size)
407 1222 frame->linesize[0] = FFALIGN(frame->linesize[0], linesize_align);
408
409
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 22792 if (avctx->pix_fmt == AV_PIX_FMT_NV12 && avctx->codec_tag == MKTAG('N', 'V', '1', '2') &&
410 ✗ FFALIGN(frame->linesize[0], linesize_align) * avctx->height +
411 ✗ FFALIGN(frame->linesize[1], linesize_align) * ((avctx->height + 1) / 2) <= buf_size) {
412 ✗ int la0 = FFALIGN(frame->linesize[0], linesize_align);
413 ✗ frame->data[1] += (la0 - frame->linesize[0]) * avctx->height;
414 ✗ frame->linesize[0] = la0;
415 ✗ frame->linesize[1] = FFALIGN(frame->linesize[1], linesize_align);
416 }
417
418
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 22792 if (avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->frame_size) {
419 200 frame->buf[1] = av_buffer_ref(context->palette);
420
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 200 if (!frame->buf[1]) {
421 ✗ av_buffer_unref(&frame->buf[0]);
422 ✗ return AVERROR(ENOMEM);
423 }
424 200 frame->data[1] = frame->buf[1]->data;
425 }
426
427
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 22792 if (avctx->pix_fmt == AV_PIX_FMT_BGR24 &&
428
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 402 ((frame->linesize[0] + 3) & ~3) * avctx->height <= buf_size)
429 352 frame->linesize[0] = (frame->linesize[0] + 3) & ~3;
430
431
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 22792 if (context->flip)
432 ✗ flip(avctx, frame);
433
434
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 22792 if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2') ||
435
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 22792 avctx->codec_tag == MKTAG('Y', 'V', '1', '6') ||
436
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437
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 22792 avctx->codec_tag == MKTAG('Y', 'V', 'U', '9'))
438 ✗ FFSWAP(uint8_t *, frame->data[1], frame->data[2]);
439
440
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 22792 if (avctx->codec_tag == AV_RL32("I420") && (avctx->width+1)*(avctx->height+1) * 3/2 == buf_size) {
441 ✗ frame->data[1] = frame->data[1] + (avctx->width+1)*(avctx->height+1) -avctx->width*avctx->height;
442 ✗ frame->data[2] = frame->data[2] + ((avctx->width+1)*(avctx->height+1) -avctx->width*avctx->height)*5/4;
443 }
444
445
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 22792 if (avctx->codec_tag == AV_RL32("yuv2") &&
446 ✗ avctx->pix_fmt == AV_PIX_FMT_YUYV422) {
447 int x, y;
448 ✗ uint8_t *line = frame->data[0];
449 ✗ for (y = 0; y < avctx->height; y++) {
450 ✗ for (x = 0; x < avctx->width; x++)
451 ✗ line[2 * x + 1] ^= 0x80;
452 ✗ line += frame->linesize[0];
453 }
454 }
455
456
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 22792 if (avctx->codec_tag == AV_RL32("b64a") &&
457 ✗ avctx->pix_fmt == AV_PIX_FMT_RGBA64BE) {
458 ✗ uint8_t *dst = frame->data[0];
459 uint64_t v;
460 int x, y;
461 ✗ for (y = 0; y < avctx->height; y++) {
462 ✗ for (x = 0; x >> 3 < avctx->width; x += 8) {
463 ✗ v = AV_RB64(&dst[x]);
464 ✗ AV_WB64(&dst[x], v << 16 | v >> 48);
465 }
466 ✗ dst += frame->linesize[0];
467 }
468 }
469
470
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 22792 if (avctx->field_order > AV_FIELD_PROGRESSIVE) { /* we have interlaced material flagged in container */
471 ✗ frame->flags |= AV_FRAME_FLAG_INTERLACED;
472 ✗ if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
473 ✗ frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
474 }
475
476 22792 *got_frame = 1;
477 22792 return buf_size;
478 }
479
480 1173 static av_cold int raw_close_decoder(AVCodecContext *avctx)
481 {
482 1173 RawVideoContext *context = avctx->priv_data;
483
484 1173 av_buffer_unref(&context->palette);
485 1173 av_freep(&context->bitstream_buf);
486 1173 return 0;
487 }
488
489 const FFCodec ff_rawvideo_decoder = {
490 .p.name = "rawvideo",
491 CODEC_LONG_NAME("raw video"),
492 .p.type = AVMEDIA_TYPE_VIDEO,
493 .p.id = AV_CODEC_ID_RAWVIDEO,
494 .priv_data_size = sizeof(RawVideoContext),
495 .init = raw_init_decoder,
496 .close = raw_close_decoder,
497 FF_CODEC_DECODE_CB(raw_decode),
498 .p.priv_class = &rawdec_class,
499 .p.capabilities = AV_CODEC_CAP_PARAM_CHANGE,
500 };
501