3 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
22 #include "libavutil/pixdesc.h"
27 #define Y4M_LINE_MAX 256
29 static int yuv4_generate_header(AVFormatContext *s, char* buf)
33 int raten, rated, aspectn, aspectd, n;
35 const char *colorspace = "";
39 width = st->codecpar->width;
40 height = st->codecpar->height;
41 field_order = st->codecpar->field_order;
43 // TODO: should be avg_frame_rate
44 av_reduce(&raten, &rated, st->time_base.den,
45 st->time_base.num, (1UL << 31) - 1);
47 aspectn = st->sample_aspect_ratio.num;
48 aspectd = st->sample_aspect_ratio.den;
50 if (aspectn == 0 && aspectd == 1)
51 aspectd = 0; // 0:0 means unknown
54 FF_DISABLE_DEPRECATION_WARNINGS
55 if (field_order != st->codec->field_order && st->codec->field_order != AV_FIELD_UNKNOWN)
56 field_order = st->codec->field_order;
57 FF_ENABLE_DEPRECATION_WARNINGS
60 switch (field_order) {
62 case AV_FIELD_TT: inter = 't'; break;
64 case AV_FIELD_BB: inter = 'b'; break;
65 default: inter = 'p'; break;
68 switch (st->codecpar->format) {
69 case AV_PIX_FMT_GRAY8:
70 colorspace = " Cmono";
72 case AV_PIX_FMT_GRAY9:
73 colorspace = " Cmono9";
75 case AV_PIX_FMT_GRAY10:
76 colorspace = " Cmono10";
78 case AV_PIX_FMT_GRAY12:
79 colorspace = " Cmono12";
81 case AV_PIX_FMT_GRAY16:
82 colorspace = " Cmono16";
84 case AV_PIX_FMT_YUV411P:
85 colorspace = " C411 XYSCSS=411";
87 case AV_PIX_FMT_YUV420P:
88 switch (st->codecpar->chroma_location) {
89 case AVCHROMA_LOC_TOPLEFT: colorspace = " C420paldv XYSCSS=420PALDV"; break;
90 case AVCHROMA_LOC_LEFT: colorspace = " C420mpeg2 XYSCSS=420MPEG2"; break;
91 default: colorspace = " C420jpeg XYSCSS=420JPEG"; break;
94 case AV_PIX_FMT_YUV422P:
95 colorspace = " C422 XYSCSS=422";
97 case AV_PIX_FMT_YUV444P:
98 colorspace = " C444 XYSCSS=444";
100 case AV_PIX_FMT_YUV420P9:
101 colorspace = " C420p9 XYSCSS=420P9";
103 case AV_PIX_FMT_YUV422P9:
104 colorspace = " C422p9 XYSCSS=422P9";
106 case AV_PIX_FMT_YUV444P9:
107 colorspace = " C444p9 XYSCSS=444P9";
109 case AV_PIX_FMT_YUV420P10:
110 colorspace = " C420p10 XYSCSS=420P10";
112 case AV_PIX_FMT_YUV422P10:
113 colorspace = " C422p10 XYSCSS=422P10";
115 case AV_PIX_FMT_YUV444P10:
116 colorspace = " C444p10 XYSCSS=444P10";
118 case AV_PIX_FMT_YUV420P12:
119 colorspace = " C420p12 XYSCSS=420P12";
121 case AV_PIX_FMT_YUV422P12:
122 colorspace = " C422p12 XYSCSS=422P12";
124 case AV_PIX_FMT_YUV444P12:
125 colorspace = " C444p12 XYSCSS=444P12";
127 case AV_PIX_FMT_YUV420P14:
128 colorspace = " C420p14 XYSCSS=420P14";
130 case AV_PIX_FMT_YUV422P14:
131 colorspace = " C422p14 XYSCSS=422P14";
133 case AV_PIX_FMT_YUV444P14:
134 colorspace = " C444p14 XYSCSS=444P14";
136 case AV_PIX_FMT_YUV420P16:
137 colorspace = " C420p16 XYSCSS=420P16";
139 case AV_PIX_FMT_YUV422P16:
140 colorspace = " C422p16 XYSCSS=422P16";
142 case AV_PIX_FMT_YUV444P16:
143 colorspace = " C444p16 XYSCSS=444P16";
147 /* construct stream header, if this is the first frame */
148 n = snprintf(buf, Y4M_LINE_MAX, "%s W%d H%d F%d:%d I%c A%d:%d%s\n",
149 Y4M_MAGIC, width, height, raten, rated, inter,
150 aspectn, aspectd, colorspace);
155 static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt)
157 AVStream *st = s->streams[pkt->stream_index];
158 AVIOContext *pb = s->pb;
160 int* first_pkt = s->priv_data;
161 int width, height, h_chroma_shift, v_chroma_shift;
163 char buf2[Y4M_LINE_MAX + 1];
164 uint8_t *ptr, *ptr1, *ptr2;
166 frame = (AVFrame *)pkt->data;
168 /* for the first packet we have to output the header as well */
171 if (yuv4_generate_header(s, buf2) < 0) {
172 av_log(s, AV_LOG_ERROR,
173 "Error. YUV4MPEG stream header write failed.\n");
176 avio_write(pb, buf2, strlen(buf2));
180 /* construct frame header */
182 avio_printf(s->pb, "%s\n", Y4M_FRAME_MAGIC);
184 width = st->codecpar->width;
185 height = st->codecpar->height;
187 ptr = frame->data[0];
189 switch (st->codecpar->format) {
190 case AV_PIX_FMT_GRAY8:
191 case AV_PIX_FMT_YUV411P:
192 case AV_PIX_FMT_YUV420P:
193 case AV_PIX_FMT_YUV422P:
194 case AV_PIX_FMT_YUV444P:
196 case AV_PIX_FMT_GRAY9:
197 case AV_PIX_FMT_GRAY10:
198 case AV_PIX_FMT_GRAY12:
199 case AV_PIX_FMT_GRAY16:
200 case AV_PIX_FMT_YUV420P9:
201 case AV_PIX_FMT_YUV422P9:
202 case AV_PIX_FMT_YUV444P9:
203 case AV_PIX_FMT_YUV420P10:
204 case AV_PIX_FMT_YUV422P10:
205 case AV_PIX_FMT_YUV444P10:
206 case AV_PIX_FMT_YUV420P12:
207 case AV_PIX_FMT_YUV422P12:
208 case AV_PIX_FMT_YUV444P12:
209 case AV_PIX_FMT_YUV420P14:
210 case AV_PIX_FMT_YUV422P14:
211 case AV_PIX_FMT_YUV444P14:
212 case AV_PIX_FMT_YUV420P16:
213 case AV_PIX_FMT_YUV422P16:
214 case AV_PIX_FMT_YUV444P16:
218 av_log(s, AV_LOG_ERROR, "The pixel format '%s' is not supported.\n",
219 av_get_pix_fmt_name(st->codecpar->format));
220 return AVERROR(EINVAL);
223 for (i = 0; i < height; i++) {
224 avio_write(pb, ptr, width);
225 ptr += frame->linesize[0];
228 if (st->codecpar->format != AV_PIX_FMT_GRAY8 && st->codecpar->format != AV_PIX_FMT_GRAY9 &&
229 st->codecpar->format != AV_PIX_FMT_GRAY10 && st->codecpar->format != AV_PIX_FMT_GRAY12 &&
230 st->codecpar->format != AV_PIX_FMT_GRAY16) {
231 // Adjust for smaller Cb and Cr planes
232 av_pix_fmt_get_chroma_sub_sample(st->codecpar->format, &h_chroma_shift,
234 // Shift right, rounding up
235 width = AV_CEIL_RSHIFT(width, h_chroma_shift);
236 height = AV_CEIL_RSHIFT(height, v_chroma_shift);
238 ptr1 = frame->data[1];
239 ptr2 = frame->data[2];
240 for (i = 0; i < height; i++) { /* Cb */
241 avio_write(pb, ptr1, width);
242 ptr1 += frame->linesize[1];
244 for (i = 0; i < height; i++) { /* Cr */
245 avio_write(pb, ptr2, width);
246 ptr2 += frame->linesize[2];
253 static int yuv4_write_header(AVFormatContext *s)
255 int *first_pkt = s->priv_data;
257 if (s->nb_streams != 1)
260 if (s->streams[0]->codecpar->codec_id != AV_CODEC_ID_WRAPPED_AVFRAME) {
261 av_log(s, AV_LOG_ERROR, "ERROR: Codec not supported.\n");
262 return AVERROR_INVALIDDATA;
265 switch (s->streams[0]->codecpar->format) {
266 case AV_PIX_FMT_YUV411P:
267 av_log(s, AV_LOG_WARNING, "Warning: generating rarely used 4:1:1 YUV "
268 "stream, some mjpegtools might not work.\n");
270 case AV_PIX_FMT_GRAY8:
271 case AV_PIX_FMT_YUV420P:
272 case AV_PIX_FMT_YUV422P:
273 case AV_PIX_FMT_YUV444P:
275 case AV_PIX_FMT_GRAY9:
276 case AV_PIX_FMT_GRAY10:
277 case AV_PIX_FMT_GRAY12:
278 case AV_PIX_FMT_GRAY16:
279 case AV_PIX_FMT_YUV420P9:
280 case AV_PIX_FMT_YUV422P9:
281 case AV_PIX_FMT_YUV444P9:
282 case AV_PIX_FMT_YUV420P10:
283 case AV_PIX_FMT_YUV422P10:
284 case AV_PIX_FMT_YUV444P10:
285 case AV_PIX_FMT_YUV420P12:
286 case AV_PIX_FMT_YUV422P12:
287 case AV_PIX_FMT_YUV444P12:
288 case AV_PIX_FMT_YUV420P14:
289 case AV_PIX_FMT_YUV422P14:
290 case AV_PIX_FMT_YUV444P14:
291 case AV_PIX_FMT_YUV420P16:
292 case AV_PIX_FMT_YUV422P16:
293 case AV_PIX_FMT_YUV444P16:
294 if (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL) {
295 av_log(s, AV_LOG_ERROR, "'%s' is not an official yuv4mpegpipe pixel format. "
296 "Use '-strict -1' to encode to this pixel format.\n",
297 av_get_pix_fmt_name(s->streams[0]->codecpar->format));
298 return AVERROR(EINVAL);
300 av_log(s, AV_LOG_WARNING, "Warning: generating non standard YUV stream. "
301 "Mjpegtools will not work.\n");
304 av_log(s, AV_LOG_ERROR, "ERROR: yuv4mpeg can only handle "
305 "yuv444p, yuv422p, yuv420p, yuv411p and gray8 pixel formats. "
306 "And using 'strict -1' also yuv444p9, yuv422p9, yuv420p9, "
307 "yuv444p10, yuv422p10, yuv420p10, "
308 "yuv444p12, yuv422p12, yuv420p12, "
309 "yuv444p14, yuv422p14, yuv420p14, "
310 "yuv444p16, yuv422p16, yuv420p16, "
311 "gray9, gray10, gray12 "
312 "and gray16 pixel formats. "
313 "Use -pix_fmt to select one.\n");
321 AVOutputFormat ff_yuv4mpegpipe_muxer = {
322 .name = "yuv4mpegpipe",
323 .long_name = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"),
325 .priv_data_size = sizeof(int),
326 .audio_codec = AV_CODEC_ID_NONE,
327 .video_codec = AV_CODEC_ID_WRAPPED_AVFRAME,
328 .write_header = yuv4_write_header,
329 .write_packet = yuv4_write_packet,