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
= "";
38 width
= st
->codec
->width
;
39 height
= st
->codec
->height
;
41 // TODO: should be avg_frame_rate
42 av_reduce(&raten
, &rated
, st
->time_base
.den
,
43 st
->time_base
.num
, (1UL << 31) - 1);
45 aspectn
= st
->sample_aspect_ratio
.num
;
46 aspectd
= st
->sample_aspect_ratio
.den
;
48 if (aspectn
== 0 && aspectd
== 1)
49 aspectd
= 0; // 0:0 means unknown
51 switch (st
->codec
->field_order
) {
53 case AV_FIELD_TT
: inter
= 't'; break;
55 case AV_FIELD_BB
: inter
= 'b'; break;
56 default: inter
= 'p'; break;
59 switch (st
->codec
->pix_fmt
) {
60 case AV_PIX_FMT_GRAY8
:
61 colorspace
= " Cmono";
63 case AV_PIX_FMT_GRAY16
:
64 colorspace
= " Cmono16";
66 case AV_PIX_FMT_YUV411P
:
67 colorspace
= " C411 XYSCSS=411";
69 case AV_PIX_FMT_YUV420P
:
70 switch (st
->codec
->chroma_sample_location
) {
71 case AVCHROMA_LOC_TOPLEFT
: colorspace
= " C420paldv XYSCSS=420PALDV"; break;
72 case AVCHROMA_LOC_LEFT
: colorspace
= " C420mpeg2 XYSCSS=420MPEG2"; break;
73 default: colorspace
= " C420jpeg XYSCSS=420JPEG"; break;
76 case AV_PIX_FMT_YUV422P
:
77 colorspace
= " C422 XYSCSS=422";
79 case AV_PIX_FMT_YUV444P
:
80 colorspace
= " C444 XYSCSS=444";
82 case AV_PIX_FMT_YUV420P9
:
83 colorspace
= " C420p9 XYSCSS=420P9";
85 case AV_PIX_FMT_YUV422P9
:
86 colorspace
= " C422p9 XYSCSS=422P9";
88 case AV_PIX_FMT_YUV444P9
:
89 colorspace
= " C444p9 XYSCSS=444P9";
91 case AV_PIX_FMT_YUV420P10
:
92 colorspace
= " C420p10 XYSCSS=420P10";
94 case AV_PIX_FMT_YUV422P10
:
95 colorspace
= " C422p10 XYSCSS=422P10";
97 case AV_PIX_FMT_YUV444P10
:
98 colorspace
= " C444p10 XYSCSS=444P10";
100 case AV_PIX_FMT_YUV420P12
:
101 colorspace
= " C420p12 XYSCSS=420P12";
103 case AV_PIX_FMT_YUV422P12
:
104 colorspace
= " C422p12 XYSCSS=422P12";
106 case AV_PIX_FMT_YUV444P12
:
107 colorspace
= " C444p12 XYSCSS=444P12";
109 case AV_PIX_FMT_YUV420P14
:
110 colorspace
= " C420p14 XYSCSS=420P14";
112 case AV_PIX_FMT_YUV422P14
:
113 colorspace
= " C422p14 XYSCSS=422P14";
115 case AV_PIX_FMT_YUV444P14
:
116 colorspace
= " C444p14 XYSCSS=444P14";
118 case AV_PIX_FMT_YUV420P16
:
119 colorspace
= " C420p16 XYSCSS=420P16";
121 case AV_PIX_FMT_YUV422P16
:
122 colorspace
= " C422p16 XYSCSS=422P16";
124 case AV_PIX_FMT_YUV444P16
:
125 colorspace
= " C444p16 XYSCSS=444P16";
129 /* construct stream header, if this is the first frame */
130 n
= snprintf(buf
, Y4M_LINE_MAX
, "%s W%d H%d F%d:%d I%c A%d:%d%s\n",
131 Y4M_MAGIC
, width
, height
, raten
, rated
, inter
,
132 aspectn
, aspectd
, colorspace
);
137 static int yuv4_write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
139 AVStream
*st
= s
->streams
[pkt
->stream_index
];
140 AVIOContext
*pb
= s
->pb
;
141 AVPicture
*picture
, picture_tmp
;
142 int* first_pkt
= s
->priv_data
;
143 int width
, height
, h_chroma_shift
, v_chroma_shift
;
145 char buf2
[Y4M_LINE_MAX
+ 1];
147 uint8_t *ptr
, *ptr1
, *ptr2
;
149 memcpy(&picture_tmp
, pkt
->data
, sizeof(AVPicture
));
150 picture
= &picture_tmp
;
152 /* for the first packet we have to output the header as well */
155 if (yuv4_generate_header(s
, buf2
) < 0) {
156 av_log(s
, AV_LOG_ERROR
,
157 "Error. YUV4MPEG stream header write failed.\n");
160 avio_write(pb
, buf2
, strlen(buf2
));
164 /* construct frame header */
166 snprintf(buf1
, sizeof(buf1
), "%s\n", Y4M_FRAME_MAGIC
);
167 avio_write(pb
, buf1
, strlen(buf1
));
169 width
= st
->codec
->width
;
170 height
= st
->codec
->height
;
172 ptr
= picture
->data
[0];
174 switch (st
->codec
->pix_fmt
) {
175 case AV_PIX_FMT_GRAY8
:
176 case AV_PIX_FMT_YUV411P
:
177 case AV_PIX_FMT_YUV420P
:
178 case AV_PIX_FMT_YUV422P
:
179 case AV_PIX_FMT_YUV444P
:
181 case AV_PIX_FMT_GRAY16
:
182 case AV_PIX_FMT_YUV420P9
:
183 case AV_PIX_FMT_YUV422P9
:
184 case AV_PIX_FMT_YUV444P9
:
185 case AV_PIX_FMT_YUV420P10
:
186 case AV_PIX_FMT_YUV422P10
:
187 case AV_PIX_FMT_YUV444P10
:
188 case AV_PIX_FMT_YUV420P12
:
189 case AV_PIX_FMT_YUV422P12
:
190 case AV_PIX_FMT_YUV444P12
:
191 case AV_PIX_FMT_YUV420P14
:
192 case AV_PIX_FMT_YUV422P14
:
193 case AV_PIX_FMT_YUV444P14
:
194 case AV_PIX_FMT_YUV420P16
:
195 case AV_PIX_FMT_YUV422P16
:
196 case AV_PIX_FMT_YUV444P16
:
200 av_log(s
, AV_LOG_ERROR
, "The pixel format '%s' is not supported.\n",
201 av_get_pix_fmt_name(st
->codec
->pix_fmt
));
202 return AVERROR(EINVAL
);
205 for (i
= 0; i
< height
; i
++) {
206 avio_write(pb
, ptr
, width
);
207 ptr
+= picture
->linesize
[0];
210 if (st
->codec
->pix_fmt
!= AV_PIX_FMT_GRAY8
&&
211 st
->codec
->pix_fmt
!= AV_PIX_FMT_GRAY16
) {
212 // Adjust for smaller Cb and Cr planes
213 av_pix_fmt_get_chroma_sub_sample(st
->codec
->pix_fmt
, &h_chroma_shift
,
215 width
= FF_CEIL_RSHIFT(width
, h_chroma_shift
);
216 height
= FF_CEIL_RSHIFT(height
, v_chroma_shift
);
218 ptr1
= picture
->data
[1];
219 ptr2
= picture
->data
[2];
220 for (i
= 0; i
< height
; i
++) { /* Cb */
221 avio_write(pb
, ptr1
, width
);
222 ptr1
+= picture
->linesize
[1];
224 for (i
= 0; i
< height
; i
++) { /* Cr */
225 avio_write(pb
, ptr2
, width
);
226 ptr2
+= picture
->linesize
[2];
233 static int yuv4_write_header(AVFormatContext
*s
)
235 int *first_pkt
= s
->priv_data
;
237 if (s
->nb_streams
!= 1)
240 if (s
->streams
[0]->codec
->codec_id
!= AV_CODEC_ID_RAWVIDEO
) {
241 av_log(s
, AV_LOG_ERROR
, "ERROR: Only rawvideo supported.\n");
242 return AVERROR_INVALIDDATA
;
245 switch (s
->streams
[0]->codec
->pix_fmt
) {
246 case AV_PIX_FMT_YUV411P
:
247 av_log(s
, AV_LOG_WARNING
, "Warning: generating rarely used 4:1:1 YUV "
248 "stream, some mjpegtools might not work.\n");
250 case AV_PIX_FMT_GRAY8
:
251 case AV_PIX_FMT_GRAY16
:
252 case AV_PIX_FMT_YUV420P
:
253 case AV_PIX_FMT_YUV422P
:
254 case AV_PIX_FMT_YUV444P
:
256 case AV_PIX_FMT_YUV420P9
:
257 case AV_PIX_FMT_YUV422P9
:
258 case AV_PIX_FMT_YUV444P9
:
259 case AV_PIX_FMT_YUV420P10
:
260 case AV_PIX_FMT_YUV422P10
:
261 case AV_PIX_FMT_YUV444P10
:
262 case AV_PIX_FMT_YUV420P12
:
263 case AV_PIX_FMT_YUV422P12
:
264 case AV_PIX_FMT_YUV444P12
:
265 case AV_PIX_FMT_YUV420P14
:
266 case AV_PIX_FMT_YUV422P14
:
267 case AV_PIX_FMT_YUV444P14
:
268 case AV_PIX_FMT_YUV420P16
:
269 case AV_PIX_FMT_YUV422P16
:
270 case AV_PIX_FMT_YUV444P16
:
271 if (s
->streams
[0]->codec
->strict_std_compliance
>= FF_COMPLIANCE_NORMAL
) {
272 av_log(s
, AV_LOG_ERROR
, "'%s' is not a official yuv4mpegpipe pixel format. "
273 "Use '-strict -1' to encode to this pixel format.\n",
274 av_get_pix_fmt_name(s
->streams
[0]->codec
->pix_fmt
));
275 return AVERROR(EINVAL
);
277 av_log(s
, AV_LOG_WARNING
, "Warning: generating non standard YUV stream. "
278 "Mjpegtools will not work.\n");
281 av_log(s
, AV_LOG_ERROR
, "ERROR: yuv4mpeg can only handle "
282 "yuv444p, yuv422p, yuv420p, yuv411p and gray8 pixel formats. "
283 "And using 'strict -1' also yuv444p9, yuv422p9, yuv420p9, "
284 "yuv444p10, yuv422p10, yuv420p10, "
285 "yuv444p12, yuv422p12, yuv420p12, "
286 "yuv444p14, yuv422p14, yuv420p14, "
287 "yuv444p16, yuv422p16, yuv420p16 "
288 "and gray16 pixel formats. "
289 "Use -pix_fmt to select one.\n");
297 AVOutputFormat ff_yuv4mpegpipe_muxer
= {
298 .name
= "yuv4mpegpipe",
299 .long_name
= NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"),
301 .priv_data_size
= sizeof(int),
302 .audio_codec
= AV_CODEC_ID_NONE
,
303 .video_codec
= AV_CODEC_ID_RAWVIDEO
,
304 .write_header
= yuv4_write_header
,
305 .write_packet
= yuv4_write_packet
,
306 .flags
= AVFMT_RAWPICTURE
,