mirror of
https://github.com/mpv-player/mpv
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b291f84901
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@28126 b3059339-0415-0410-9bf9-f77b7e298cf2
306 lines
8.2 KiB
C
306 lines
8.2 KiB
C
/*
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* vo_png.c, Portable Network Graphics Renderer for MPlayer
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*
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* Copyright 2001 by Felix Buenemann <atmosfear@users.sourceforge.net>
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*
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* Uses libpng (which uses zlib), so see according licenses.
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*
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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 <errno.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <png.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "video_out.h"
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#include "video_out_internal.h"
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#include "subopt-helper.h"
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#include "mplayer.h"
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#define BUFLENGTH 512
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static const vo_info_t info =
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{
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"PNG file",
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"png",
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"Felix Buenemann <atmosfear@users.sourceforge.net>",
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""
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};
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const LIBVO_EXTERN (png)
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static int z_compression = Z_NO_COMPRESSION;
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static char *png_outdir = NULL;
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static int framenum = 0;
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static int use_alpha;
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struct pngdata {
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FILE * fp;
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png_structp png_ptr;
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png_infop info_ptr;
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enum {OK,ERROR} status;
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};
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static void png_mkdir(char *buf, int verbose) {
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struct stat stat_p;
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#ifndef __MINGW32__
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if ( mkdir(buf, 0755) < 0 ) {
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#else
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if ( mkdir(buf) < 0 ) {
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#endif
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switch (errno) { /* use switch in case other errors need to be caught
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and handled in the future */
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case EEXIST:
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if ( stat(buf, &stat_p ) < 0 ) {
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mp_msg(MSGT_VO, MSGL_ERR, "%s: %s: %s\n", info.short_name,
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MSGTR_VO_GenericError, strerror(errno) );
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mp_msg(MSGT_VO, MSGL_ERR, "%s: %s %s\n", info.short_name,
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MSGTR_VO_UnableToAccess,buf);
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exit_player(MSGTR_Exit_error);
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}
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if ( !S_ISDIR(stat_p.st_mode) ) {
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mp_msg(MSGT_VO, MSGL_ERR, "%s: %s %s\n", info.short_name,
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buf, MSGTR_VO_ExistsButNoDirectory);
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exit_player(MSGTR_Exit_error);
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}
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if ( !(stat_p.st_mode & S_IWUSR) ) {
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mp_msg(MSGT_VO, MSGL_ERR, "%s: %s - %s\n", info.short_name,
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buf, MSGTR_VO_DirExistsButNotWritable);
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exit_player(MSGTR_Exit_error);
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}
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mp_msg(MSGT_VO, MSGL_INFO, "%s: %s - %s\n", info.short_name,
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buf, MSGTR_VO_DirExistsAndIsWritable);
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break;
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default:
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mp_msg(MSGT_VO, MSGL_ERR, "%s: %s: %s\n", info.short_name,
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MSGTR_VO_GenericError, strerror(errno) );
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mp_msg(MSGT_VO, MSGL_ERR, "%s: %s - %s\n", info.short_name,
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buf, MSGTR_VO_CantCreateDirectory);
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exit_player(MSGTR_Exit_error);
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} /* end switch */
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} else if ( verbose ) {
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mp_msg(MSGT_VO, MSGL_INFO, "%s: %s - %s\n", info.short_name,
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buf, MSGTR_VO_DirectoryCreateSuccess);
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} /* end if */
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}
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static int
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config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t flags, char *title, uint32_t format)
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{
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char buf[BUFLENGTH];
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if(z_compression == 0) {
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mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_PNG_Warning1);
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mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_PNG_Warning2);
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mp_msg(MSGT_VO,MSGL_INFO, MSGTR_LIBVO_PNG_Warning3);
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}
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snprintf(buf, BUFLENGTH, "%s", png_outdir);
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png_mkdir(buf, 1);
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Compression level %i\n", z_compression);
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return 0;
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}
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static struct pngdata create_png (char * fname, int image_width, int image_height, int swapped)
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{
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struct pngdata png;
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/*png_structp png_ptr = png_create_write_struct
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(PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
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user_error_fn, user_warning_fn);*/
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//png_byte *row_pointers[image_height];
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png.png_ptr = png_create_write_struct
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(PNG_LIBPNG_VER_STRING, NULL,
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NULL, NULL);
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png.info_ptr = png_create_info_struct(png.png_ptr);
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if (!png.png_ptr) {
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Failed to init png pointer\n");
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png.status = ERROR;
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return png;
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}
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if (!png.info_ptr) {
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Failed to init png infopointer\n");
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png_destroy_write_struct(&png.png_ptr,
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(png_infopp)NULL);
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png.status = ERROR;
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return png;
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}
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if (setjmp(png.png_ptr->jmpbuf)) {
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Internal error!\n");
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png_destroy_write_struct(&png.png_ptr, &png.info_ptr);
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fclose(png.fp);
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png.status = ERROR;
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return png;
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}
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png.fp = fopen (fname, "wb");
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if (png.fp == NULL) {
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mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_PNG_ErrorOpeningForWriting, strerror(errno));
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png.status = ERROR;
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return png;
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}
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Init IO\n");
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png_init_io(png.png_ptr, png.fp);
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/* set the zlib compression level */
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png_set_compression_level(png.png_ptr, z_compression);
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/*png_set_IHDR(png_ptr, info_ptr, width, height,
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bit_depth, color_type, interlace_type,
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compression_type, filter_type)*/
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png_set_IHDR(png.png_ptr, png.info_ptr, image_width, image_height,
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8, use_alpha ? PNG_COLOR_TYPE_RGBA : PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
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PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Write Info\n");
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png_write_info(png.png_ptr, png.info_ptr);
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if(swapped) {
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Set BGR Conversion\n");
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png_set_bgr(png.png_ptr);
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}
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png.status = OK;
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return png;
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}
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static uint8_t destroy_png(struct pngdata png) {
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Write End\n");
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png_write_end(png.png_ptr, png.info_ptr);
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Destroy Write Struct\n");
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png_destroy_write_struct(&png.png_ptr, &png.info_ptr);
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fclose (png.fp);
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return 0;
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}
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static uint32_t draw_image(mp_image_t* mpi){
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char buf[100];
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int k;
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struct pngdata png;
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png_byte *row_pointers[mpi->h];
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// if -dr or -slices then do nothing:
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if(mpi->flags&(MP_IMGFLAG_DIRECT|MP_IMGFLAG_DRAW_CALLBACK)) return VO_TRUE;
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snprintf (buf, 100, "%s/%08d.png", png_outdir, ++framenum);
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png = create_png(buf, mpi->w, mpi->h, IMGFMT_IS_BGR(mpi->imgfmt));
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if(png.status){
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mp_msg(MSGT_VO,MSGL_WARN, MSGTR_LIBVO_PNG_ErrorInCreatePng);
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return 1;
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}
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Creating Row Pointers\n");
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for ( k = 0; k < mpi->h; k++ )
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row_pointers[k] = mpi->planes[0]+mpi->stride[0]*k;
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//png_write_flush(png.png_ptr);
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//png_set_flush(png.png_ptr, nrows);
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if( mp_msg_test(MSGT_VO,MSGL_DBG2) ) {
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mp_msg(MSGT_VO,MSGL_DBG2, "PNG Writing Image Data\n"); }
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png_write_image(png.png_ptr, row_pointers);
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destroy_png(png);
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return VO_TRUE;
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}
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static void draw_osd(void){}
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static void flip_page (void){}
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static int draw_frame(uint8_t * src[])
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{
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return -1;
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}
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static int draw_slice( uint8_t *src[],int stride[],int w,int h,int x,int y )
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{
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return -1;
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}
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static int
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query_format(uint32_t format)
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{
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const int supported_flags = VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW|VFCAP_ACCEPT_STRIDE;
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switch(format){
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case IMGFMT_RGB24:
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case IMGFMT_BGR24:
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return use_alpha ? 0 : supported_flags;
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case IMGFMT_RGBA:
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case IMGFMT_BGRA:
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return use_alpha ? supported_flags : 0;
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}
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return 0;
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}
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static void uninit(void){
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if (png_outdir) {
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free(png_outdir);
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png_outdir = NULL;
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}
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}
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static void check_events(void){}
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static int int_zero_to_nine(int *sh)
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{
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if ( (*sh < 0) || (*sh > 9) )
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return 0;
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return 1;
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}
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static opt_t subopts[] = {
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{"alpha", OPT_ARG_BOOL, &use_alpha, NULL, 0},
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{"z", OPT_ARG_INT, &z_compression, (opt_test_f)int_zero_to_nine},
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{"outdir", OPT_ARG_MSTRZ, &png_outdir, NULL, 0},
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{NULL}
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};
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static int preinit(const char *arg)
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{
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z_compression = 0;
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png_outdir = strdup(".");
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use_alpha = 0;
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if (subopt_parse(arg, subopts) != 0) {
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return -1;
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}
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return 0;
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}
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static int control(uint32_t request, void *data, ...)
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{
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switch (request) {
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case VOCTRL_DRAW_IMAGE:
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return draw_image(data);
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case VOCTRL_QUERY_FORMAT:
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return query_format(*((uint32_t*)data));
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}
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return VO_NOTIMPL;
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}
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