FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/pnmenc.c
Date: 2025-07-05 02:49:51
Exec Total Coverage
Lines: 85 146 58.2%
Functions: 1 2 50.0%
Branches: 55 88 62.5%
Line Branch Exec Source
1 /*
2 * PNM image format
3 * Copyright (c) 2002, 2003 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 #include "config_components.h"
23
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/pixdesc.h"
27 #include "libavutil/float2half.h"
28 #include "libavutil/intfloat.h"
29 #include "avcodec.h"
30 #include "codec_internal.h"
31 #include "encode.h"
32
33 typedef struct PHMEncContext {
34 Float2HalfTables f2h_tables;
35 } PHMEncContext;
36
37 153 static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
38 const AVFrame *p, int *got_packet)
39 {
40 153 PHMEncContext *s = avctx->priv_data;
41 uint8_t *bytestream, *bytestream_start, *bytestream_end;
42 int i, h, h1, c, n, linesize, ret;
43 153 int size = av_image_get_buffer_size(avctx->pix_fmt,
44 avctx->width, avctx->height, 1);
45
46
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 153 if (size < 0)
47 ✗ return size;
48
49
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 153 if ((ret = ff_get_encode_buffer(avctx, pkt, size + 200U, 0)) < 0)
50 ✗ return ret;
51
52 153 bytestream_start =
53 153 bytestream = pkt->data;
54 153 bytestream_end = pkt->data + pkt->size;
55
56 153 h = avctx->height;
57 153 h1 = h;
58
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 153 switch (avctx->pix_fmt) {
59 25 case AV_PIX_FMT_MONOWHITE:
60 25 c = '4';
61 25 n = (avctx->width + 7) >> 3;
62 25 break;
63 38 case AV_PIX_FMT_GRAY8:
64 38 c = '5';
65 38 n = avctx->width;
66 38 break;
67 ✗ case AV_PIX_FMT_GRAY16BE:
68 ✗ c = '5';
69 ✗ n = avctx->width * 2;
70 ✗ break;
71 38 case AV_PIX_FMT_RGB24:
72 38 c = '6';
73 38 n = avctx->width * 3;
74 38 break;
75 ✗ case AV_PIX_FMT_RGB48BE:
76 ✗ c = '6';
77 ✗ n = avctx->width * 6;
78 ✗ break;
79 ✗ case AV_PIX_FMT_YUV420P:
80 ✗ if (avctx->width & 1 || avctx->height & 1) {
81 ✗ av_log(avctx, AV_LOG_ERROR, "pgmyuv needs even width and height\n");
82 ✗ return AVERROR(EINVAL);
83 }
84 ✗ c = '5';
85 ✗ n = avctx->width;
86 ✗ h1 = (h * 3) / 2;
87 ✗ break;
88 ✗ case AV_PIX_FMT_YUV420P16BE:
89 ✗ c = '5';
90 ✗ n = avctx->width * 2;
91 ✗ h1 = (h * 3) / 2;
92 ✗ break;
93 26 case AV_PIX_FMT_GBRPF32BE:
94 case AV_PIX_FMT_GBRPF32LE:
95
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 26 if (avctx->codec_id == AV_CODEC_ID_PFM) {
96 26 c = 'F';
97 26 n = avctx->width * 4;
98 } else {
99 ✗ c = 'H';
100 ✗ n = avctx->width * 2;
101 }
102 26 break;
103 26 case AV_PIX_FMT_GRAYF32BE:
104 case AV_PIX_FMT_GRAYF32LE:
105
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 26 if (avctx->codec_id == AV_CODEC_ID_PFM) {
106 26 c = 'f';
107 26 n = avctx->width * 4;
108 } else {
109 ✗ c = 'h';
110 ✗ n = avctx->width * 2;
111 }
112 26 break;
113 ✗ default:
114 ✗ return -1;
115 }
116 153 snprintf(bytestream, bytestream_end - bytestream,
117 "P%c\n%d %d\n", c, avctx->width, h1);
118 153 bytestream += strlen(bytestream);
119
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 153 if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32LE ||
120
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 140 avctx->pix_fmt == AV_PIX_FMT_GRAYF32LE ||
121
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 127 avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE ||
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 114 avctx->pix_fmt == AV_PIX_FMT_GRAYF32BE)
123 52 snprintf(bytestream, bytestream_end - bytestream,
124
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 52 "%f\n", (avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE ||
125
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 39 avctx->pix_fmt == AV_PIX_FMT_GRAYF32BE) ? 1.f: -1.f);
126 153 bytestream += strlen(bytestream);
127
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 153 if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE &&
128
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 128 avctx->pix_fmt != AV_PIX_FMT_GBRPF32LE &&
129
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 115 avctx->pix_fmt != AV_PIX_FMT_GRAYF32LE &&
130
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 102 avctx->pix_fmt != AV_PIX_FMT_GBRPF32BE &&
131
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 89 avctx->pix_fmt != AV_PIX_FMT_GRAYF32BE) {
132 76 int maxdepth = (1 << av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth) - 1;
133 76 snprintf(bytestream, bytestream_end - bytestream,
134 "%d\n", maxdepth);
135 76 bytestream += strlen(bytestream);
136 }
137
138
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 153 if ((avctx->pix_fmt == AV_PIX_FMT_GBRPF32LE ||
139
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 179 avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE) && c == 'F') {
140 /* PFM is encoded from bottom to top */
141 26 const float *r = (const float *)(p->data[2] + p->linesize[2] * (avctx->height - 1));
142 26 const float *g = (const float *)(p->data[0] + p->linesize[0] * (avctx->height - 1));
143 26 const float *b = (const float *)(p->data[1] + p->linesize[1] * (avctx->height - 1));
144
145
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 7514 for (int i = 0; i < avctx->height; i++) {
146
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 2643264 for (int j = 0; j < avctx->width; j++) {
147 2635776 AV_WN32(bytestream + 0, av_float2int(r[j]));
148 2635776 AV_WN32(bytestream + 4, av_float2int(g[j]));
149 2635776 AV_WN32(bytestream + 8, av_float2int(b[j]));
150 2635776 bytestream += 12;
151 }
152
153 7488 r -= p->linesize[2] / 4;
154 7488 g -= p->linesize[0] / 4;
155 7488 b -= p->linesize[1] / 4;
156 }
157
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 127 } else if ((avctx->pix_fmt == AV_PIX_FMT_GRAYF32LE ||
158
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 153 avctx->pix_fmt == AV_PIX_FMT_GRAYF32BE) && c == 'f') {
159 /* PFM is encoded from bottom to top */
160 26 const float *g = (const float *)(p->data[0] + p->linesize[0] * (avctx->height - 1));
161
162
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163
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 2643264 for (int j = 0; j < avctx->width; j++) {
164 2635776 AV_WN32(bytestream, av_float2int(g[j]));
165 2635776 bytestream += 4;
166 }
167
168 7488 g -= p->linesize[0] / 4;
169 }
170
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 101 } else if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32 && c == 'H') {
171 ✗ const float *r = (const float *)p->data[2];
172 ✗ const float *g = (const float *)p->data[0];
173 ✗ const float *b = (const float *)p->data[1];
174
175 ✗ for (int i = 0; i < avctx->height; i++) {
176 ✗ for (int j = 0; j < avctx->width; j++) {
177 ✗ AV_WN16(bytestream + 0, float2half(av_float2int(r[j]), &s->f2h_tables));
178 ✗ AV_WN16(bytestream + 2, float2half(av_float2int(g[j]), &s->f2h_tables));
179 ✗ AV_WN16(bytestream + 4, float2half(av_float2int(b[j]), &s->f2h_tables));
180 ✗ bytestream += 6;
181 }
182
183 ✗ r += p->linesize[2] / 4;
184 ✗ g += p->linesize[0] / 4;
185 ✗ b += p->linesize[1] / 4;
186 }
187
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 101 } else if (avctx->pix_fmt == AV_PIX_FMT_GRAYF32 && c == 'h') {
188 ✗ const float *g = (const float *)p->data[0];
189
190 ✗ for (int i = 0; i < avctx->height; i++) {
191 ✗ for (int j = 0; j < avctx->width; j++) {
192 ✗ AV_WN16(bytestream, float2half(av_float2int(g[j]), &s->f2h_tables));
193 ✗ bytestream += 2;
194 }
195
196 ✗ g += p->linesize[0] / 4;
197 }
198 } else {
199 101 const uint8_t *ptr = p->data[0];
200 101 linesize = p->linesize[0];
201
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 29189 for (i = 0; i < h; i++) {
202 29088 memcpy(bytestream, ptr, n);
203 29088 bytestream += n;
204 29088 ptr += linesize;
205 }
206 }
207
208
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 153 if (avctx->pix_fmt == AV_PIX_FMT_YUV420P || avctx->pix_fmt == AV_PIX_FMT_YUV420P16BE) {
209 ✗ const uint8_t *ptr1 = p->data[1], *ptr2 = p->data[2];
210 ✗ h >>= 1;
211 ✗ n >>= 1;
212 ✗ for (i = 0; i < h; i++) {
213 ✗ memcpy(bytestream, ptr1, n);
214 ✗ bytestream += n;
215 ✗ memcpy(bytestream, ptr2, n);
216 ✗ bytestream += n;
217 ✗ ptr1 += p->linesize[1];
218 ✗ ptr2 += p->linesize[2];
219 }
220 }
221 153 av_shrink_packet(pkt, bytestream - bytestream_start);
222 153 *got_packet = 1;
223
224 153 return 0;
225 }
226
227 #if CONFIG_PGM_ENCODER
228 const FFCodec ff_pgm_encoder = {
229 .p.name = "pgm",
230 CODEC_LONG_NAME("PGM (Portable GrayMap) image"),
231 .p.type = AVMEDIA_TYPE_VIDEO,
232 .p.id = AV_CODEC_ID_PGM,
233 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
234 FF_CODEC_ENCODE_CB(pnm_encode_frame),
235 CODEC_PIXFMTS(AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16BE),
236 };
237 #endif
238
239 #if CONFIG_PGMYUV_ENCODER
240 const FFCodec ff_pgmyuv_encoder = {
241 .p.name = "pgmyuv",
242 CODEC_LONG_NAME("PGMYUV (Portable GrayMap YUV) image"),
243 .p.type = AVMEDIA_TYPE_VIDEO,
244 .p.id = AV_CODEC_ID_PGMYUV,
245 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
246 FF_CODEC_ENCODE_CB(pnm_encode_frame),
247 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P16BE),
248 };
249 #endif
250
251 #if CONFIG_PPM_ENCODER
252 const FFCodec ff_ppm_encoder = {
253 .p.name = "ppm",
254 CODEC_LONG_NAME("PPM (Portable PixelMap) image"),
255 .p.type = AVMEDIA_TYPE_VIDEO,
256 .p.id = AV_CODEC_ID_PPM,
257 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
258 FF_CODEC_ENCODE_CB(pnm_encode_frame),
259 CODEC_PIXFMTS(AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB48BE),
260 };
261 #endif
262
263 #if CONFIG_PBM_ENCODER
264 const FFCodec ff_pbm_encoder = {
265 .p.name = "pbm",
266 CODEC_LONG_NAME("PBM (Portable BitMap) image"),
267 .p.type = AVMEDIA_TYPE_VIDEO,
268 .p.id = AV_CODEC_ID_PBM,
269 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
270 FF_CODEC_ENCODE_CB(pnm_encode_frame),
271 CODEC_PIXFMTS(AV_PIX_FMT_MONOWHITE),
272 };
273 #endif
274
275 #if CONFIG_PFM_ENCODER
276 const FFCodec ff_pfm_encoder = {
277 .p.name = "pfm",
278 CODEC_LONG_NAME("PFM (Portable FloatMap) image"),
279 .p.type = AVMEDIA_TYPE_VIDEO,
280 .p.id = AV_CODEC_ID_PFM,
281 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
282 FF_CODEC_ENCODE_CB(pnm_encode_frame),
283 CODEC_PIXFMTS(AV_PIX_FMT_GBRPF32LE, AV_PIX_FMT_GRAYF32LE,
284 AV_PIX_FMT_GBRPF32BE, AV_PIX_FMT_GRAYF32BE),
285 };
286 #endif
287
288 #if CONFIG_PHM_ENCODER
289 ✗ static av_cold int phm_enc_init(AVCodecContext *avctx)
290 {
291 ✗ PHMEncContext *s = avctx->priv_data;
292
293 ✗ ff_init_float2half_tables(&s->f2h_tables);
294
295 ✗ return 0;
296 }
297
298 const FFCodec ff_phm_encoder = {
299 .p.name = "phm",
300 CODEC_LONG_NAME("PHM (Portable HalfFloatMap) image"),
301 .p.type = AVMEDIA_TYPE_VIDEO,
302 .p.id = AV_CODEC_ID_PHM,
303 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
304 .priv_data_size = sizeof(PHMEncContext),
305 .init = phm_enc_init,
306 FF_CODEC_ENCODE_CB(pnm_encode_frame),
307 CODEC_PIXFMTS(AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GRAYF32),
308 };
309 #endif
310