| 1 | /* |
| 2 | * Image format |
| 3 | * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
| 4 | * Copyright (c) 2004 Michael Niedermayer |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include "libavutil/intreadwrite.h" |
| 24 | #include "libavutil/avassert.h" |
| 25 | #include "libavutil/avstring.h" |
| 26 | #include "libavutil/log.h" |
| 27 | #include "libavutil/opt.h" |
| 28 | #include "libavutil/pixdesc.h" |
| 29 | #include "libavutil/time_internal.h" |
| 30 | #include "avformat.h" |
| 31 | #include "avio_internal.h" |
| 32 | #include "internal.h" |
| 33 | |
| 34 | typedef struct { |
| 35 | const AVClass *class; /**< Class for private options. */ |
| 36 | int img_number; |
| 37 | int is_pipe; |
| 38 | int split_planes; /**< use independent file for each Y, U, V plane */ |
| 39 | char path[1024]; |
| 40 | int update; |
| 41 | int use_strftime; |
| 42 | const char *muxer; |
| 43 | } VideoMuxData; |
| 44 | |
| 45 | static int write_header(AVFormatContext *s) |
| 46 | { |
| 47 | VideoMuxData *img = s->priv_data; |
| 48 | AVStream *st = s->streams[0]; |
| 49 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(st->codec->pix_fmt); |
| 50 | |
| 51 | av_strlcpy(img->path, s->filename, sizeof(img->path)); |
| 52 | |
| 53 | /* find format */ |
| 54 | if (s->oformat->flags & AVFMT_NOFILE) |
| 55 | img->is_pipe = 0; |
| 56 | else |
| 57 | img->is_pipe = 1; |
| 58 | |
| 59 | if (st->codec->codec_id == AV_CODEC_ID_GIF) { |
| 60 | img->muxer = "gif"; |
| 61 | } else if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO) { |
| 62 | const char *str = strrchr(img->path, '.'); |
| 63 | img->split_planes = str |
| 64 | && !av_strcasecmp(str + 1, "y") |
| 65 | && s->nb_streams == 1 |
| 66 | && desc |
| 67 | &&(desc->flags & AV_PIX_FMT_FLAG_PLANAR) |
| 68 | && desc->nb_components >= 3; |
| 69 | } |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static int write_packet(AVFormatContext *s, AVPacket *pkt) |
| 74 | { |
| 75 | VideoMuxData *img = s->priv_data; |
| 76 | AVIOContext *pb[4]; |
| 77 | char filename[1024]; |
| 78 | AVCodecContext *codec = s->streams[pkt->stream_index]->codec; |
| 79 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(codec->pix_fmt); |
| 80 | int i; |
| 81 | |
| 82 | if (!img->is_pipe) { |
| 83 | if (img->update) { |
| 84 | av_strlcpy(filename, img->path, sizeof(filename)); |
| 85 | } else if (img->use_strftime) { |
| 86 | time_t now0; |
| 87 | struct tm *tm, tmpbuf; |
| 88 | time(&now0); |
| 89 | tm = localtime_r(&now0, &tmpbuf); |
| 90 | if (!strftime(filename, sizeof(filename), img->path, tm)) { |
| 91 | av_log(s, AV_LOG_ERROR, "Could not get frame filename with strftime\n"); |
| 92 | return AVERROR(EINVAL); |
| 93 | } |
| 94 | } else if (av_get_frame_filename(filename, sizeof(filename), img->path, img->img_number) < 0 && |
| 95 | img->img_number > 1) { |
| 96 | av_log(s, AV_LOG_ERROR, |
| 97 | "Could not get frame filename number %d from pattern '%s' (either set updatefirst or use a pattern like %%03d within the filename pattern)\n", |
| 98 | img->img_number, img->path); |
| 99 | return AVERROR(EINVAL); |
| 100 | } |
| 101 | for (i = 0; i < 4; i++) { |
| 102 | if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE, |
| 103 | &s->interrupt_callback, NULL) < 0) { |
| 104 | av_log(s, AV_LOG_ERROR, "Could not open file : %s\n", filename); |
| 105 | return AVERROR(EIO); |
| 106 | } |
| 107 | |
| 108 | if (!img->split_planes || i+1 >= desc->nb_components) |
| 109 | break; |
| 110 | filename[strlen(filename) - 1] = "UVAx"[i]; |
| 111 | } |
| 112 | } else { |
| 113 | pb[0] = s->pb; |
| 114 | } |
| 115 | |
| 116 | if (img->split_planes) { |
| 117 | int ysize = codec->width * codec->height; |
| 118 | int usize = FF_CEIL_RSHIFT(codec->width, desc->log2_chroma_w) * FF_CEIL_RSHIFT(codec->height, desc->log2_chroma_h); |
| 119 | if (desc->comp[0].depth_minus1 >= 8) { |
| 120 | ysize *= 2; |
| 121 | usize *= 2; |
| 122 | } |
| 123 | avio_write(pb[0], pkt->data , ysize); |
| 124 | avio_write(pb[1], pkt->data + ysize , usize); |
| 125 | avio_write(pb[2], pkt->data + ysize + usize, usize); |
| 126 | avio_close(pb[1]); |
| 127 | avio_close(pb[2]); |
| 128 | if (desc->nb_components > 3) { |
| 129 | avio_write(pb[3], pkt->data + ysize + 2*usize, ysize); |
| 130 | avio_close(pb[3]); |
| 131 | } |
| 132 | } else if (img->muxer) { |
| 133 | int ret; |
| 134 | AVStream *st; |
| 135 | AVPacket pkt2 = {0}; |
| 136 | AVFormatContext *fmt = NULL; |
| 137 | |
| 138 | av_assert0(!img->split_planes); |
| 139 | |
| 140 | ret = avformat_alloc_output_context2(&fmt, NULL, img->muxer, s->filename); |
| 141 | if (ret < 0) |
| 142 | return ret; |
| 143 | st = avformat_new_stream(fmt, NULL); |
| 144 | if (!st) { |
| 145 | avformat_free_context(fmt); |
| 146 | return AVERROR(ENOMEM); |
| 147 | } |
| 148 | st->id = pkt->stream_index; |
| 149 | |
| 150 | fmt->pb = pb[0]; |
| 151 | if ((ret = av_copy_packet(&pkt2, pkt)) < 0 || |
| 152 | (ret = av_dup_packet(&pkt2)) < 0 || |
| 153 | (ret = avcodec_copy_context(st->codec, s->streams[0]->codec)) < 0 || |
| 154 | (ret = avformat_write_header(fmt, NULL)) < 0 || |
| 155 | (ret = av_interleaved_write_frame(fmt, &pkt2)) < 0 || |
| 156 | (ret = av_write_trailer(fmt)) < 0) { |
| 157 | av_free_packet(&pkt2); |
| 158 | avformat_free_context(fmt); |
| 159 | return ret; |
| 160 | } |
| 161 | av_free_packet(&pkt2); |
| 162 | avformat_free_context(fmt); |
| 163 | } else { |
| 164 | avio_write(pb[0], pkt->data, pkt->size); |
| 165 | } |
| 166 | avio_flush(pb[0]); |
| 167 | if (!img->is_pipe) { |
| 168 | avio_close(pb[0]); |
| 169 | } |
| 170 | |
| 171 | img->img_number++; |
| 172 | return 0; |
| 173 | } |
| 174 | |
| 175 | #define OFFSET(x) offsetof(VideoMuxData, x) |
| 176 | #define ENC AV_OPT_FLAG_ENCODING_PARAM |
| 177 | static const AVOption muxoptions[] = { |
| 178 | { "updatefirst", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC }, |
| 179 | { "update", "continuously overwrite one file", OFFSET(update), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC }, |
| 180 | { "start_number", "set first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC }, |
| 181 | { "strftime", "use strftime for filename", OFFSET(use_strftime), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC }, |
| 182 | { NULL }, |
| 183 | }; |
| 184 | |
| 185 | #if CONFIG_IMAGE2_MUXER |
| 186 | static const AVClass img2mux_class = { |
| 187 | .class_name = "image2 muxer", |
| 188 | .item_name = av_default_item_name, |
| 189 | .option = muxoptions, |
| 190 | .version = LIBAVUTIL_VERSION_INT, |
| 191 | }; |
| 192 | |
| 193 | AVOutputFormat ff_image2_muxer = { |
| 194 | .name = "image2", |
| 195 | .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"), |
| 196 | .extensions = "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png," |
| 197 | "ppm,sgi,tga,tif,tiff,jp2,j2c,j2k,xwd,sun,ras,rs,im1,im8,im24," |
| 198 | "sunras,xbm,xface,pix,y", |
| 199 | .priv_data_size = sizeof(VideoMuxData), |
| 200 | .video_codec = AV_CODEC_ID_MJPEG, |
| 201 | .write_header = write_header, |
| 202 | .write_packet = write_packet, |
| 203 | .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE, |
| 204 | .priv_class = &img2mux_class, |
| 205 | }; |
| 206 | #endif |
| 207 | #if CONFIG_IMAGE2PIPE_MUXER |
| 208 | AVOutputFormat ff_image2pipe_muxer = { |
| 209 | .name = "image2pipe", |
| 210 | .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"), |
| 211 | .priv_data_size = sizeof(VideoMuxData), |
| 212 | .video_codec = AV_CODEC_ID_MJPEG, |
| 213 | .write_header = write_header, |
| 214 | .write_packet = write_packet, |
| 215 | .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS |
| 216 | }; |
| 217 | #endif |