| 1 | /* |
| 2 | * YUV4MPEG muxer |
| 3 | * Copyright (c) 2001, 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 "libavutil/pixdesc.h" |
| 23 | #include "avformat.h" |
| 24 | #include "internal.h" |
| 25 | #include "yuv4mpeg.h" |
| 26 | |
| 27 | #define Y4M_LINE_MAX 256 |
| 28 | |
| 29 | static int yuv4_generate_header(AVFormatContext *s, char* buf) |
| 30 | { |
| 31 | AVStream *st; |
| 32 | int width, height; |
| 33 | int raten, rated, aspectn, aspectd, n; |
| 34 | char inter; |
| 35 | const char *colorspace = ""; |
| 36 | |
| 37 | st = s->streams[0]; |
| 38 | width = st->codec->width; |
| 39 | height = st->codec->height; |
| 40 | |
| 41 | // TODO: should be avg_frame_rate |
| 42 | av_reduce(&raten, &rated, st->time_base.den, |
| 43 | st->time_base.num, (1UL << 31) - 1); |
| 44 | |
| 45 | aspectn = st->sample_aspect_ratio.num; |
| 46 | aspectd = st->sample_aspect_ratio.den; |
| 47 | |
| 48 | if (aspectn == 0 && aspectd == 1) |
| 49 | aspectd = 0; // 0:0 means unknown |
| 50 | |
| 51 | switch (st->codec->field_order) { |
| 52 | case AV_FIELD_TB: |
| 53 | case AV_FIELD_TT: inter = 't'; break; |
| 54 | case AV_FIELD_BT: |
| 55 | case AV_FIELD_BB: inter = 'b'; break; |
| 56 | default: inter = 'p'; break; |
| 57 | } |
| 58 | |
| 59 | switch (st->codec->pix_fmt) { |
| 60 | case AV_PIX_FMT_GRAY8: |
| 61 | colorspace = " Cmono"; |
| 62 | break; |
| 63 | case AV_PIX_FMT_GRAY16: |
| 64 | colorspace = " Cmono16"; |
| 65 | break; |
| 66 | case AV_PIX_FMT_YUV411P: |
| 67 | colorspace = " C411 XYSCSS=411"; |
| 68 | break; |
| 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; |
| 74 | } |
| 75 | break; |
| 76 | case AV_PIX_FMT_YUV422P: |
| 77 | colorspace = " C422 XYSCSS=422"; |
| 78 | break; |
| 79 | case AV_PIX_FMT_YUV444P: |
| 80 | colorspace = " C444 XYSCSS=444"; |
| 81 | break; |
| 82 | case AV_PIX_FMT_YUV420P9: |
| 83 | colorspace = " C420p9 XYSCSS=420P9"; |
| 84 | break; |
| 85 | case AV_PIX_FMT_YUV422P9: |
| 86 | colorspace = " C422p9 XYSCSS=422P9"; |
| 87 | break; |
| 88 | case AV_PIX_FMT_YUV444P9: |
| 89 | colorspace = " C444p9 XYSCSS=444P9"; |
| 90 | break; |
| 91 | case AV_PIX_FMT_YUV420P10: |
| 92 | colorspace = " C420p10 XYSCSS=420P10"; |
| 93 | break; |
| 94 | case AV_PIX_FMT_YUV422P10: |
| 95 | colorspace = " C422p10 XYSCSS=422P10"; |
| 96 | break; |
| 97 | case AV_PIX_FMT_YUV444P10: |
| 98 | colorspace = " C444p10 XYSCSS=444P10"; |
| 99 | break; |
| 100 | case AV_PIX_FMT_YUV420P12: |
| 101 | colorspace = " C420p12 XYSCSS=420P12"; |
| 102 | break; |
| 103 | case AV_PIX_FMT_YUV422P12: |
| 104 | colorspace = " C422p12 XYSCSS=422P12"; |
| 105 | break; |
| 106 | case AV_PIX_FMT_YUV444P12: |
| 107 | colorspace = " C444p12 XYSCSS=444P12"; |
| 108 | break; |
| 109 | case AV_PIX_FMT_YUV420P14: |
| 110 | colorspace = " C420p14 XYSCSS=420P14"; |
| 111 | break; |
| 112 | case AV_PIX_FMT_YUV422P14: |
| 113 | colorspace = " C422p14 XYSCSS=422P14"; |
| 114 | break; |
| 115 | case AV_PIX_FMT_YUV444P14: |
| 116 | colorspace = " C444p14 XYSCSS=444P14"; |
| 117 | break; |
| 118 | case AV_PIX_FMT_YUV420P16: |
| 119 | colorspace = " C420p16 XYSCSS=420P16"; |
| 120 | break; |
| 121 | case AV_PIX_FMT_YUV422P16: |
| 122 | colorspace = " C422p16 XYSCSS=422P16"; |
| 123 | break; |
| 124 | case AV_PIX_FMT_YUV444P16: |
| 125 | colorspace = " C444p16 XYSCSS=444P16"; |
| 126 | break; |
| 127 | } |
| 128 | |
| 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); |
| 133 | |
| 134 | return n; |
| 135 | } |
| 136 | |
| 137 | static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt) |
| 138 | { |
| 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; |
| 144 | int i; |
| 145 | char buf2[Y4M_LINE_MAX + 1]; |
| 146 | char buf1[20]; |
| 147 | uint8_t *ptr, *ptr1, *ptr2; |
| 148 | |
| 149 | memcpy(&picture_tmp, pkt->data, sizeof(AVPicture)); |
| 150 | picture = &picture_tmp; |
| 151 | |
| 152 | /* for the first packet we have to output the header as well */ |
| 153 | if (*first_pkt) { |
| 154 | *first_pkt = 0; |
| 155 | if (yuv4_generate_header(s, buf2) < 0) { |
| 156 | av_log(s, AV_LOG_ERROR, |
| 157 | "Error. YUV4MPEG stream header write failed.\n"); |
| 158 | return AVERROR(EIO); |
| 159 | } else { |
| 160 | avio_write(pb, buf2, strlen(buf2)); |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | /* construct frame header */ |
| 165 | |
| 166 | snprintf(buf1, sizeof(buf1), "%s\n", Y4M_FRAME_MAGIC); |
| 167 | avio_write(pb, buf1, strlen(buf1)); |
| 168 | |
| 169 | width = st->codec->width; |
| 170 | height = st->codec->height; |
| 171 | |
| 172 | ptr = picture->data[0]; |
| 173 | |
| 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: |
| 180 | break; |
| 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: |
| 197 | width *= 2; |
| 198 | break; |
| 199 | default: |
| 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); |
| 203 | } |
| 204 | |
| 205 | for (i = 0; i < height; i++) { |
| 206 | avio_write(pb, ptr, width); |
| 207 | ptr += picture->linesize[0]; |
| 208 | } |
| 209 | |
| 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, |
| 214 | &v_chroma_shift); |
| 215 | width = FF_CEIL_RSHIFT(width, h_chroma_shift); |
| 216 | height = FF_CEIL_RSHIFT(height, v_chroma_shift); |
| 217 | |
| 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]; |
| 223 | } |
| 224 | for (i = 0; i < height; i++) { /* Cr */ |
| 225 | avio_write(pb, ptr2, width); |
| 226 | ptr2 += picture->linesize[2]; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | return 0; |
| 231 | } |
| 232 | |
| 233 | static int yuv4_write_header(AVFormatContext *s) |
| 234 | { |
| 235 | int *first_pkt = s->priv_data; |
| 236 | |
| 237 | if (s->nb_streams != 1) |
| 238 | return AVERROR(EIO); |
| 239 | |
| 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; |
| 243 | } |
| 244 | |
| 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"); |
| 249 | break; |
| 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: |
| 255 | break; |
| 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->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); |
| 276 | } |
| 277 | av_log(s, AV_LOG_WARNING, "Warning: generating non standard YUV stream. " |
| 278 | "Mjpegtools will not work.\n"); |
| 279 | break; |
| 280 | default: |
| 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"); |
| 290 | return AVERROR(EIO); |
| 291 | } |
| 292 | |
| 293 | *first_pkt = 1; |
| 294 | return 0; |
| 295 | } |
| 296 | |
| 297 | AVOutputFormat ff_yuv4mpegpipe_muxer = { |
| 298 | .name = "yuv4mpegpipe", |
| 299 | .long_name = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"), |
| 300 | .extensions = "y4m", |
| 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, |
| 307 | }; |