FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/dpxenc.c
Date: 2022-07-04 19:11:22
Exec Total Coverage
Lines: 124 154 80.5%
Branches: 47 63 74.6%

Line Branch Exec Source
1 /*
2 * DPX (.dpx) image encoder
3 * Copyright (c) 2011 Peter Ross <pross@xvid.org>
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 #include "libavutil/common.h"
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/imgutils.h"
25 #include "avcodec.h"
26 #include "codec_internal.h"
27 #include "encode.h"
28 #include "version.h"
29
30 typedef struct DPXContext {
31 int big_endian;
32 int bits_per_component;
33 int num_components;
34 int descriptor;
35 int planar;
36 } DPXContext;
37
38 6 static av_cold int encode_init(AVCodecContext *avctx)
39 {
40 6 DPXContext *s = avctx->priv_data;
41 6 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
42
43 6 s->big_endian = !!(desc->flags & AV_PIX_FMT_FLAG_BE);
44 6 s->bits_per_component = desc->comp[0].depth;
45 6 s->num_components = desc->nb_components;
46
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6 s->descriptor = (desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? 51 : 50;
47 6 s->planar = !!(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
48
49
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6 switch (avctx->pix_fmt) {
50 case AV_PIX_FMT_ABGR:
51 s->descriptor = 52;
52 break;
53 case AV_PIX_FMT_GRAY16BE:
54 case AV_PIX_FMT_GRAY16LE:
55 case AV_PIX_FMT_GRAY8:
56 s->descriptor = 6;
57 break;
58 4 case AV_PIX_FMT_GBRP10BE:
59 case AV_PIX_FMT_GBRP10LE:
60 case AV_PIX_FMT_GBRP12BE:
61 case AV_PIX_FMT_GBRP12LE:
62 case AV_PIX_FMT_RGB24:
63 case AV_PIX_FMT_RGBA64BE:
64 case AV_PIX_FMT_RGBA64LE:
65 case AV_PIX_FMT_RGBA:
66 4 break;
67 2 case AV_PIX_FMT_RGB48LE:
68 case AV_PIX_FMT_RGB48BE:
69
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2 if (avctx->bits_per_raw_sample)
70 1 s->bits_per_component = avctx->bits_per_raw_sample;
71 2 break;
72 }
73
74 6 return 0;
75 }
76
77 3953898 static av_always_inline void write16_internal(int big_endian, void *p, int value)
78 {
79
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3953898 if (big_endian) AV_WB16(p, value);
80 3953898 else AV_WL16(p, value);
81 3953898 }
82
83 2636634 static av_always_inline void write32_internal(int big_endian, void *p, int value)
84 {
85
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2636634 if (big_endian) AV_WB32(p, value);
86 2636634 else AV_WL32(p, value);
87 2636634 }
88
89 #define write16(p, value) write16_internal(s->big_endian, p, value)
90 #define write32(p, value) write32_internal(s->big_endian, p, value)
91
92 13 static void encode_rgb48_10bit(AVCodecContext *avctx, const AVFrame *pic,
93 uint8_t *dst)
94 {
95 13 DPXContext *s = avctx->priv_data;
96 13 const uint8_t *src = pic->data[0];
97 int x, y;
98
99
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3757 for (y = 0; y < avctx->height; y++) {
100
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1321632 for (x = 0; x < avctx->width; x++) {
101 int value;
102
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1317888 if (s->big_endian) {
103 value = ((AV_RB16(src + 6*x + 4) & 0xFFC0U) >> 4)
104 | ((AV_RB16(src + 6*x + 2) & 0xFFC0U) << 6)
105 | ((AV_RB16(src + 6*x + 0) & 0xFFC0U) << 16);
106 } else {
107 1317888 value = ((AV_RL16(src + 6*x + 4) & 0xFFC0U) >> 4)
108 1317888 | ((AV_RL16(src + 6*x + 2) & 0xFFC0U) << 6)
109 1317888 | ((AV_RL16(src + 6*x + 0) & 0xFFC0U) << 16);
110 }
111 1317888 write32(dst, value);
112 1317888 dst += 4;
113 }
114 3744 src += pic->linesize[0];
115 }
116 13 }
117
118 13 static void encode_gbrp10(AVCodecContext *avctx, const AVFrame *pic, uint8_t *dst)
119 {
120 13 DPXContext *s = avctx->priv_data;
121 13 const uint8_t *src[3] = {pic->data[0], pic->data[1], pic->data[2]};
122 int x, y, i;
123
124
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3757 for (y = 0; y < avctx->height; y++) {
125
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1321632 for (x = 0; x < avctx->width; x++) {
126 int value;
127
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1317888 if (s->big_endian) {
128 value = (AV_RB16(src[0] + 2*x) << 12)
129 | (AV_RB16(src[1] + 2*x) << 2)
130 | ((unsigned)AV_RB16(src[2] + 2*x) << 22);
131 } else {
132 1317888 value = (AV_RL16(src[0] + 2*x) << 12)
133 1317888 | (AV_RL16(src[1] + 2*x) << 2)
134 1317888 | ((unsigned)AV_RL16(src[2] + 2*x) << 22);
135 }
136 1317888 write32(dst, value);
137 1317888 dst += 4;
138 }
139
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14976 for (i = 0; i < 3; i++)
140 11232 src[i] += pic->linesize[i];
141 }
142 13 }
143
144 13 static void encode_gbrp12(AVCodecContext *avctx, const AVFrame *pic, uint8_t *dst)
145 {
146 13 DPXContext *s = avctx->priv_data;
147 13 const uint16_t *src[3] = {(uint16_t*)pic->data[0],
148 13 (uint16_t*)pic->data[1],
149 13 (uint16_t*)pic->data[2]};
150 int x, y, i, pad;
151 13 pad = avctx->width*6;
152 13 pad = (FFALIGN(pad, 4) - pad) >> 1;
153
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3757 for (y = 0; y < avctx->height; y++) {
154
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155 uint16_t value[3];
156
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1317888 if (s->big_endian) {
157 value[1] = AV_RB16(src[0] + x) << 4;
158 value[2] = AV_RB16(src[1] + x) << 4;
159 value[0] = AV_RB16(src[2] + x) << 4;
160 } else {
161 1317888 value[1] = AV_RL16(src[0] + x) << 4;
162 1317888 value[2] = AV_RL16(src[1] + x) << 4;
163 1317888 value[0] = AV_RL16(src[2] + x) << 4;
164 }
165
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5271552 for (i = 0; i < 3; i++, dst += 2)
166 3953664 write16(dst, value[i]);
167 }
168
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3744 for (i = 0; i < pad; i++, dst += 2)
169 AV_WN16(dst, 0);
170
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14976 for (i = 0; i < 3; i++)
171 11232 src[i] += pic->linesize[i]/2;
172 }
173 13 }
174
175 78 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
176 const AVFrame *frame, int *got_packet)
177 {
178 78 DPXContext *s = avctx->priv_data;
179 int size, ret, need_align, len;
180 uint8_t *buf;
181
182 #define HEADER_SIZE 1664 /* DPX Generic header */
183
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78 if (s->bits_per_component == 10)
184 26 size = avctx->height * avctx->width * 4;
185
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52 else if (s->bits_per_component == 12) {
186 // 3 components, 12 bits put on 16 bits
187 13 len = avctx->width*6;
188 13 size = FFALIGN(len, 4);
189 13 need_align = size - len;
190 13 size *= avctx->height;
191 } else {
192 // N components, M bits
193 39 len = avctx->width * s->num_components * s->bits_per_component >> 3;
194 39 size = FFALIGN(len, 4);
195 39 need_align = size - len;
196 39 size *= avctx->height;
197 }
198
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78 if ((ret = ff_get_encode_buffer(avctx, pkt, size + HEADER_SIZE, 0)) < 0)
199 return ret;
200 78 buf = pkt->data;
201
202 78 memset(buf, 0, HEADER_SIZE);
203
204 /* File information header */
205 78 write32(buf, MKBETAG('S','D','P','X'));
206 78 write32(buf + 4, HEADER_SIZE);
207 78 memcpy (buf + 8, "V1.0", 4);
208 78 write32(buf + 20, 1); /* new image */
209 78 write32(buf + 24, HEADER_SIZE);
210
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78 if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT))
211 memcpy (buf + 160, LIBAVCODEC_IDENT, FFMIN(sizeof(LIBAVCODEC_IDENT), 100));
212 78 write32(buf + 660, 0xFFFFFFFF); /* unencrypted */
213
214 /* Image information header */
215 78 write16(buf + 768, 0); /* orientation; left to right, top to bottom */
216 78 write16(buf + 770, 1); /* number of elements */
217 78 write32(buf + 772, avctx->width);
218 78 write32(buf + 776, avctx->height);
219 78 buf[800] = s->descriptor;
220 78 buf[801] = 2; /* linear transfer */
221 78 buf[802] = 2; /* linear colorimetric */
222 78 buf[803] = s->bits_per_component;
223
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78 write16(buf + 804, (s->bits_per_component == 10 || s->bits_per_component == 12) ?
224 1 : 0); /* packing method */
225 78 write32(buf + 808, HEADER_SIZE); /* data offset */
226
227 /* Image source information header */
228 78 write32(buf + 1628, avctx->sample_aspect_ratio.num);
229 78 write32(buf + 1632, avctx->sample_aspect_ratio.den);
230
231
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78 switch(s->bits_per_component) {
232 39 case 8:
233 case 16:
234
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39 if (need_align) {
235 int j;
236 const uint8_t *src = frame->data[0];
237 uint8_t *dst = pkt->data + HEADER_SIZE;
238 size = (len + need_align) * avctx->height;
239 for (j=0; j<avctx->height; j++) {
240 memcpy(dst, src, len);
241 memset(dst + len, 0, need_align);
242 dst += len + need_align;
243 src += frame->linesize[0];
244 }
245 } else {
246 39 size = av_image_copy_to_buffer(buf + HEADER_SIZE, pkt->size - HEADER_SIZE,
247 39 (const uint8_t**)frame->data, frame->linesize,
248 avctx->pix_fmt,
249 avctx->width, avctx->height, 1);
250 }
251
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39 if (size < 0)
252 return size;
253 39 break;
254 26 case 10:
255
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26 if (s->planar)
256 13 encode_gbrp10(avctx, frame, buf + HEADER_SIZE);
257 else
258 13 encode_rgb48_10bit(avctx, frame, buf + HEADER_SIZE);
259 26 break;
260 13 case 12:
261 13 encode_gbrp12(avctx, frame, buf + HEADER_SIZE);
262 13 break;
263 default:
264 av_log(avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n", s->bits_per_component);
265 return -1;
266 }
267
268 78 size += HEADER_SIZE;
269
270 78 write32(buf + 16, size); /* file size */
271
272 78 *got_packet = 1;
273
274 78 return 0;
275 }
276
277 const FFCodec ff_dpx_encoder = {
278 .p.name = "dpx",
279 .p.long_name = NULL_IF_CONFIG_SMALL("DPX (Digital Picture Exchange) image"),
280 .p.type = AVMEDIA_TYPE_VIDEO,
281 .p.id = AV_CODEC_ID_DPX,
282 .p.capabilities = AV_CODEC_CAP_DR1,
283 .priv_data_size = sizeof(DPXContext),
284 .init = encode_init,
285 FF_CODEC_ENCODE_CB(encode_frame),
286 .p.pix_fmts = (const enum AVPixelFormat[]){
287 AV_PIX_FMT_GRAY8,
288 AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, AV_PIX_FMT_ABGR,
289 AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE,
290 AV_PIX_FMT_RGB48LE, AV_PIX_FMT_RGB48BE,
291 AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_RGBA64BE,
292 AV_PIX_FMT_GBRP10LE, AV_PIX_FMT_GBRP10BE,
293 AV_PIX_FMT_GBRP12LE, AV_PIX_FMT_GBRP12BE,
294 AV_PIX_FMT_NONE},
295 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
296 };
297