mirror of
https://github.com/mpv-player/mpv
synced 2024-11-03 03:19:24 +01:00
a9538e17ad
This affects packed RGB formats up to 16 bits per pixel. The old mplayer names used LSB-to-MSB order, while FFmpeg (and some other libraries) use MSB-to-LSB. Nothing should change with this commit, i.e. no bit order or endian bugs should be added or fixed. In some cases, the name stays the same, even though the byte order changes, e.g. RGB8->BGR8 and BGR8->RGB8, and this affects the user-visible names too; this might cause confusion.
322 lines
9.0 KiB
C
322 lines
9.0 KiB
C
/*
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* This file is part of mplayer.
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*
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* mplayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mplayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with mplayer. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <setjmp.h>
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#include <libavcodec/avcodec.h>
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#include <libavutil/mem.h>
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#include "compat/libav.h"
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#include "config.h"
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#if HAVE_JPEG
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#include <jpeglib.h>
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#endif
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#include "osdep/io.h"
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#include "image_writer.h"
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#include "talloc.h"
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#include "video/img_format.h"
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#include "video/mp_image.h"
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#include "video/fmt-conversion.h"
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#include "video/sws_utils.h"
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#include "options/m_option.h"
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const struct image_writer_opts image_writer_opts_defaults = {
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.format = "jpg",
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.png_compression = 7,
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.png_filter = 5,
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.jpeg_quality = 90,
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.jpeg_optimize = 100,
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.jpeg_smooth = 0,
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.jpeg_dpi = 72,
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.jpeg_progressive = 0,
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.jpeg_baseline = 1,
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};
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#define OPT_BASE_STRUCT struct image_writer_opts
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const struct m_sub_options image_writer_conf = {
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.opts = (const m_option_t[]) {
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OPT_INTRANGE("jpeg-quality", jpeg_quality, 0, 0, 100),
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OPT_INTRANGE("jpeg-optimize", jpeg_optimize, 0, 0, 100),
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OPT_INTRANGE("jpeg-smooth", jpeg_smooth, 0, 0, 100),
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OPT_INTRANGE("jpeg-dpi", jpeg_dpi, M_OPT_MIN, 1, 99999),
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OPT_FLAG("jpeg-progressive", jpeg_progressive, 0),
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OPT_FLAG("jpeg-baseline", jpeg_baseline, 0),
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OPT_INTRANGE("png-compression", png_compression, 0, 0, 9),
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OPT_INTRANGE("png-filter", png_filter, 0, 0, 5),
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OPT_STRING("format", format, 0),
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{0},
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},
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.size = sizeof(struct image_writer_opts),
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.defaults = &image_writer_opts_defaults,
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};
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struct image_writer_ctx {
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struct mp_log *log;
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const struct image_writer_opts *opts;
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const struct img_writer *writer;
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};
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struct img_writer {
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const char *file_ext;
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int (*write)(struct image_writer_ctx *ctx, mp_image_t *image, FILE *fp);
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const int *pixfmts;
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int lavc_codec;
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};
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static int write_lavc(struct image_writer_ctx *ctx, mp_image_t *image, FILE *fp)
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{
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int success = 0;
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AVFrame *pic = NULL;
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AVPacket pkt = {0};
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int got_output = 0;
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av_init_packet(&pkt);
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struct AVCodec *codec = avcodec_find_encoder(ctx->writer->lavc_codec);
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AVCodecContext *avctx = NULL;
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if (!codec)
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goto print_open_fail;
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avctx = avcodec_alloc_context3(codec);
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if (!avctx)
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goto print_open_fail;
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avctx->time_base = AV_TIME_BASE_Q;
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avctx->width = image->w;
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avctx->height = image->h;
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avctx->pix_fmt = imgfmt2pixfmt(image->imgfmt);
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if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
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MP_ERR(ctx, "Image format %s not supported by lavc.\n",
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mp_imgfmt_to_name(image->imgfmt));
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goto error_exit;
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}
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if (ctx->writer->lavc_codec == AV_CODEC_ID_PNG) {
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avctx->compression_level = ctx->opts->png_compression;
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avctx->prediction_method = ctx->opts->png_filter;
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}
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if (avcodec_open2(avctx, codec, NULL) < 0) {
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print_open_fail:
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MP_ERR(ctx, "Could not open libavcodec encoder for saving images\n");
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goto error_exit;
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}
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pic = av_frame_alloc();
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if (!pic)
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goto error_exit;
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for (int n = 0; n < 4; n++) {
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pic->data[n] = image->planes[n];
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pic->linesize[n] = image->stride[n];
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}
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int ret = avcodec_encode_video2(avctx, &pkt, pic, &got_output);
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if (ret < 0)
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goto error_exit;
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fwrite(pkt.data, pkt.size, 1, fp);
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success = !!got_output;
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error_exit:
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if (avctx)
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avcodec_close(avctx);
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av_free(avctx);
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av_frame_free(&pic);
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av_free_packet(&pkt);
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return success;
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}
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#if HAVE_JPEG
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static void write_jpeg_error_exit(j_common_ptr cinfo)
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{
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// NOTE: do not write error message, too much effort to connect the libjpeg
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// log callbacks with mplayer's log function mp_msp()
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// Return control to the setjmp point
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longjmp(*(jmp_buf*)cinfo->client_data, 1);
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}
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static int write_jpeg(struct image_writer_ctx *ctx, mp_image_t *image, FILE *fp)
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{
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struct jpeg_compress_struct cinfo;
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struct jpeg_error_mgr jerr;
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cinfo.err = jpeg_std_error(&jerr);
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jerr.error_exit = write_jpeg_error_exit;
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jmp_buf error_return_jmpbuf;
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cinfo.client_data = &error_return_jmpbuf;
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if (setjmp(cinfo.client_data)) {
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jpeg_destroy_compress(&cinfo);
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return 0;
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}
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jpeg_create_compress(&cinfo);
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jpeg_stdio_dest(&cinfo, fp);
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cinfo.image_width = image->w;
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cinfo.image_height = image->h;
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cinfo.input_components = 3;
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cinfo.in_color_space = JCS_RGB;
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cinfo.write_JFIF_header = TRUE;
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cinfo.JFIF_major_version = 1;
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cinfo.JFIF_minor_version = 2;
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cinfo.density_unit = 1; /* 0=unknown, 1=dpi, 2=dpcm */
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cinfo.X_density = ctx->opts->jpeg_dpi;
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cinfo.Y_density = ctx->opts->jpeg_dpi;
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cinfo.write_Adobe_marker = TRUE;
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jpeg_set_defaults(&cinfo);
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jpeg_set_quality(&cinfo, ctx->opts->jpeg_quality, ctx->opts->jpeg_baseline);
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cinfo.optimize_coding = ctx->opts->jpeg_optimize;
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cinfo.smoothing_factor = ctx->opts->jpeg_smooth;
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if (ctx->opts->jpeg_progressive)
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jpeg_simple_progression(&cinfo);
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jpeg_start_compress(&cinfo, TRUE);
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while (cinfo.next_scanline < cinfo.image_height) {
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JSAMPROW row_pointer[1];
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row_pointer[0] = image->planes[0] +
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cinfo.next_scanline * image->stride[0];
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jpeg_write_scanlines(&cinfo, row_pointer,1);
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}
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jpeg_finish_compress(&cinfo);
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jpeg_destroy_compress(&cinfo);
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return 1;
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}
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#endif
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static const struct img_writer img_writers[] = {
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{ "png", write_lavc, .lavc_codec = AV_CODEC_ID_PNG },
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{ "ppm", write_lavc, .lavc_codec = AV_CODEC_ID_PPM },
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{ "pgm", write_lavc,
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.lavc_codec = AV_CODEC_ID_PGM,
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.pixfmts = (const int[]) { IMGFMT_Y8, 0 },
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},
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{ "pgmyuv", write_lavc,
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.lavc_codec = AV_CODEC_ID_PGMYUV,
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.pixfmts = (const int[]) { IMGFMT_420P, 0 },
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},
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{ "tga", write_lavc,
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.lavc_codec = AV_CODEC_ID_TARGA,
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.pixfmts = (const int[]) { IMGFMT_BGR24, IMGFMT_BGRA, IMGFMT_RGB555_LE,
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IMGFMT_Y8, 0},
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},
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#if HAVE_JPEG
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{ "jpg", write_jpeg },
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{ "jpeg", write_jpeg },
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#endif
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};
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static const struct img_writer *get_writer(const struct image_writer_opts *opts)
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{
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const char *type = opts->format;
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for (size_t n = 0; n < sizeof(img_writers) / sizeof(img_writers[0]); n++) {
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const struct img_writer *writer = &img_writers[n];
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if (type && strcmp(type, writer->file_ext) == 0)
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return writer;
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}
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return &img_writers[0];
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}
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const char *image_writer_file_ext(const struct image_writer_opts *opts)
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{
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struct image_writer_opts defs = image_writer_opts_defaults;
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if (!opts)
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opts = &defs;
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return get_writer(opts)->file_ext;
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}
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int write_image(struct mp_image *image, const struct image_writer_opts *opts,
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const char *filename, struct mp_log *log)
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{
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struct mp_image *allocated_image = NULL;
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struct image_writer_opts defs = image_writer_opts_defaults;
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int d_w = image->params.d_w;
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int d_h = image->params.d_h;
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bool is_anamorphic = image->w != d_w || image->h != d_h;
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if (!opts)
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opts = &defs;
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const struct img_writer *writer = get_writer(opts);
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struct image_writer_ctx ctx = { log, opts, writer };
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int destfmt = IMGFMT_RGB24;
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if (writer->pixfmts) {
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destfmt = writer->pixfmts[0]; // default to first pixel format
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for (const int *fmt = writer->pixfmts; *fmt; fmt++) {
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if (*fmt == image->imgfmt) {
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destfmt = *fmt;
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break;
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}
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}
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}
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// Caveat: no colorspace/levels conversion done if pixel formats equal
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// it's unclear what colorspace/levels the target wants
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if (image->imgfmt != destfmt || is_anamorphic) {
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struct mp_image *dst = mp_image_alloc(destfmt, d_w, d_h);
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mp_image_copy_attributes(dst, image);
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mp_image_swscale(dst, image, mp_sws_hq_flags);
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allocated_image = dst;
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image = dst;
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}
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FILE *fp = fopen(filename, "wb");
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int success = 0;
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if (fp == NULL) {
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mp_err(log, "Error opening '%s' for writing!\n", filename);
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} else {
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success = writer->write(&ctx, image, fp);
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success = !fclose(fp) && success;
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if (!success)
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mp_err(log, "Error writing file '%s'!\n", filename);
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}
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talloc_free(allocated_image);
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return success;
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}
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void dump_png(struct mp_image *image, const char *filename, struct mp_log *log)
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{
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struct image_writer_opts opts = image_writer_opts_defaults;
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opts.format = "png";
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write_image(image, &opts, filename, log);
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}
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