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https://github.com/mpv-player/mpv
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a68cbb44ef
Patch by Jean-Francois Panisset < panisset (at) comcast (dot) net > git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12574 b3059339-0415-0410-9bf9-f77b7e298cf2
250 lines
5.2 KiB
C
250 lines
5.2 KiB
C
/*
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* vo_tga.c: targa output
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*
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* this video output module write targa uncompressed file in 15, 24 and 32 bit bgr format.
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*
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* to select the output format use the format filter:
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* mplayer -vo tga -vf format=bgr15 ...
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* mplayer -vo tga -vf format=bgr24 ...
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* mplayer -vo tga -vf format=bgr32 ...
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*
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* The 16 bit file are loaded without problem from Gimp and ImageMagick but give an error
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* with entice (a visualizer from the enlightenment package that use the imlib2 package).
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*
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* In 32 bit mode the alpha channel is set to 255 (0xff). For big endian
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* machines, TGA_ALPHA32 changes from 0xff000000 to 0x000000ff, and TGA_SHIFT32 from 0 to 8.
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*
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* I need to fill the alpha channel because entice consider that alpha channel (and displays
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* nothing, only the background!), but ImageMacick (the program display) or gimp doesn't
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* care.
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*
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* maybe is possible (with a compilation switch) to avoid the fill of the alpha channel
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* and work outside mplayer (if needed)
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*
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* Daniele Forghieri ( guru@digitalfantasy.it )
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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 <math.h>
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#include "config.h"
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#include "video_out.h"
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#include "video_out_internal.h"
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#ifdef WORDS_BIGENDIAN
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#define TGA_ALPHA32 0x000000ff
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#define TGA_SHIFT32 8
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#else
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#define TGA_ALPHA32 0xff000000
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#define TGA_SHIFT32 0
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#endif
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static vo_info_t info =
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{
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"Targa output",
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"tga",
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"Daniele Forghieri - guru@digitalfantasy.it",
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""
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};
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LIBVO_EXTERN (tga)
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/* locals vars */
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static int frame_num = 0;
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static void *line_buff;
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static void tga_make_header(uint8_t *h, int dx, int dy, int bpp)
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{
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int i;
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for(i = 0; i < 18; i++) {
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switch (i) {
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case 2:
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*h = 0x02;
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break;
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case 12:
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*h = dx & 0xff;
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break;
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case 13:
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*h = (dx >> 8) & 0xff;
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break;
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case 14:
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*h = dy & 0xff;
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break;
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case 15:
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*h = (dy >> 8) & 0xff;
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break;
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case 16:
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*h = bpp;
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break;
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case 17:
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*h = 0x20;
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break;
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default:
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*h = 0;
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}
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++h;
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}
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}
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static int write_tga( char *file, int bpp, int dx, int dy, uint8_t *buf, int stride)
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{
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int er;
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FILE *fo;
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fo = fopen(file, "wb");
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if (fo != NULL) {
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uint8_t hdr[18];
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er = 0;
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tga_make_header(hdr, dx, dy, bpp);
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if (fwrite(hdr, sizeof(hdr), 1, fo) == 1) {
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int wb;
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wb = ((bpp + 7) / 8) * dx;
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if (bpp == 32) {
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/* Setup the alpha channel for every pixel */
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while (dy-- > 0) {
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uint32_t *d;
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uint32_t *s;
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int x;
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s = (uint32_t *)buf;
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d = line_buff;
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for(x = 0; x < dx; x++) {
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*d++ = ((*s++) << TGA_SHIFT32) | TGA_ALPHA32;
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}
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if (fwrite(line_buff, wb, 1, fo) != 1) {
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er = 4;
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break;
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}
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buf += stride;
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}
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}
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else {
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while (dy-- > 0) {
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if (fwrite(buf, wb, 1, fo) != 1) {
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er = 4;
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break;
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}
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buf += stride;
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}
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}
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}
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else {
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er = 2;
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}
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fclose(fo);
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}
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else {
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er = 1;
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}
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if (er) {
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fprintf(stderr, "Error writing file [%s]\n", file);
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}
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return(er);
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}
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static uint32_t draw_image(mp_image_t* mpi)
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{
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char file[20 + 1];
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snprintf (file, 20, "%08d.tga", ++frame_num);
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write_tga( file,
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mpi->bpp,
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mpi->w,
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mpi->h,
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mpi->planes[0],
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mpi->stride[0]);
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return VO_TRUE;
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}
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static uint32_t config(uint32_t width, uint32_t height, uint32_t d_width, uint32_t d_height, uint32_t fullscreen, char *title, uint32_t format)
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{
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/* buffer for alpha */
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if(line_buff){ free(line_buff); line_buff=NULL; }
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if (format == (IMGFMT_BGR | 32)) {
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line_buff = malloc(width * 4);
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}
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return 0;
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}
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static void draw_osd(void)
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{
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}
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static void flip_page (void)
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{
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return;
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}
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static uint32_t draw_slice(uint8_t *srcimg[], 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 uint32_t draw_frame(uint8_t * src[])
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{
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return -1;
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}
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static uint32_t query_format(uint32_t format)
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{
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switch(format){
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case IMGFMT_BGR|15:
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case IMGFMT_BGR|24:
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case IMGFMT_BGR|32:
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return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW;
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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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{
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if(line_buff){ free(line_buff); line_buff=NULL; }
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}
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static void check_events(void)
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{
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}
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static uint32_t preinit(const char *arg)
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{
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if(arg) {
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printf("vo_tga: Unknown subdevice: %s\n",arg);
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return ENOSYS;
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}
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return 0;
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}
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static uint32_t 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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