mirror of https://github.com/mpv-player/mpv
287 lines
6.5 KiB
C
287 lines
6.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include <linux/fb.h>
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#include <linux/vt.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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#include "yuv2rgb.h"
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LIBVO_EXTERN(fbdev)
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//#include "yuv2rgb.h"
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static vo_info_t vo_info = {
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"Framebuffer Device",
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"fbdev",
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"Szabolcs Berecz <szabi@inf.elte.hu>",
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""
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};
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static int vt_active;
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static int vt_fd;
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char *fb_dev_name = NULL;
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static int fb_dev_fd;
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static size_t fb_size;
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static uint8_t *frame_buffer;
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static int fb_bpp;
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static int in_width;
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static int in_height;
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static int out_width;
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static int out_height;
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static uint8_t *next_frame;
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static int screen_width;
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static uint32_t pixel_format;
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static int init_done = 0;
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static uint32_t init(uint32_t width, uint32_t height, uint32_t d_width,
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uint32_t d_height, uint32_t fullscreen, char *title,
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uint32_t format)
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{
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int fd, vt;
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char vt_name[11];
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struct vt_stat vt_state;
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struct vt_mode vt_mode;
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struct fb_fix_screeninfo fix_info;
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struct fb_var_screeninfo var_info;
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/* get a free vt */
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if ((fd = open("/dev/tty0", O_WRONLY, 0)) == -1) {
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printf("Can't open /dev/tty0: %s\n", strerror(errno));
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return 1;
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}
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if (ioctl(fd, VT_OPENQRY, &vt) < 0 || vt == -1) {
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printf("Can't open a free VT: %s\n", strerror(errno));
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return 1;
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}
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close(fd);
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/* open the vt */
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snprintf(vt_name, 10, "/dev/tty%d", vt);
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if ((vt_fd = open(vt_name, O_RDWR | O_NONBLOCK, 0)) == -1) {
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printf("Can't open %s: %s\n", vt_name, strerror(errno));
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return 1;
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}
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/* save the current vtnum */
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if (!ioctl(vt_fd, VT_GETSTATE, &vt_state))
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vt_active = vt_state.v_active;
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/* detach the controlling tty */
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if ((fd = open("/dev/tty", O_RDWR)) >= 0) {
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ioctl(fd, TIOCNOTTY, 0);
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close(fd);
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}
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#if 0
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/* switch to the new vt */
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if (ioctl(vt_fd, VT_ACTIVATE, vt_active))
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printf("ioctl VT_ACTIVATE: %s\n", strerror(errno));
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if (ioctl(vt_fd, VT_WAITACTIVE, vt_active))
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printf("ioctl VT_WAITACTIVE: %s\n", strerror(errno));
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if (ioctl(vt_fd, VT_GETMODE, &vt_mode) < 0) {
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printf("ioctl VT_GETMODE: %s\n", strerror(errno));
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return 1;
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}
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signal(SIGUSR1, vt_request);
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vt_mode.mode = VT_PROCESS;
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vt_mode.relsig = SIGUSR1;
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vt_mode.acqsig = SIGUSR1;
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if (ioctl(vt_fd, VT_SETMODE, &vt_mode) < 0) {
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printf("ioctl VT_SETMODE: %s\n", strerror(errno));
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return 1;
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}
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#endif
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if (!fb_dev_name && !(fb_dev_name = getenv("FRAMEBUFFER")))
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fb_dev_name = "/dev/fb0";
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if ((fb_dev_fd = open(fb_dev_name, O_RDWR)) == -1) {
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printf("Can't open %s: %s\n", fb_dev_name, strerror(errno));
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return 1;
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}
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if (ioctl(fb_dev_fd, FBIOGET_VSCREENINFO, &var_info)) {
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printf("Can't get VSCREENINFO: %s\n", strerror(errno));
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return 1;
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}
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if (ioctl(fb_dev_fd, FBIOGET_FSCREENINFO, &fix_info)) {
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printf("Can't get VSCREENINFO: %s\n", strerror(errno));
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return 1;
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}
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switch (fix_info.type) {
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case FB_TYPE_VGA_PLANES:
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printf("FB_TYPE_VGA_PLANES not supported.\n");
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return 1;
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break;
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case FB_TYPE_PLANES:
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printf("FB_TYPE_PLANES not supported.\n");
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return 1;
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break;
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case FB_TYPE_INTERLEAVED_PLANES:
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printf("FB_TYPE_INTERLEAVED_PLANES not supported.\n");
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return 1;
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break;
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#ifdef FB_TYPE_TEXT
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case FB_TYPE_TEXT:
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printf("FB_TYPE_TEXT not supported.\n");
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return 1;
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break;
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#endif
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case FB_TYPE_PACKED_PIXELS:
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/* OK */
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break;
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default:
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printf("unknown FB_TYPE: %d\n", fix_info.type);
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return 1;
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}
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fb_size = fix_info.smem_len;
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if ((frame_buffer = (uint8_t *) mmap(0, fb_size, PROT_READ | PROT_WRITE,
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MAP_SHARED, fb_dev_fd, 0)) == (uint8_t *) -1) {
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printf("Can't mmap %s: %s\n", fb_dev_name, strerror(errno));
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return 1;
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}
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close(fb_dev_fd);
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fb_bpp = var_info.bits_per_pixel;
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screen_width = fix_info.line_length;
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printf("vo_fbdev: frame_buffer @ %p\n", frame_buffer);
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printf("vo_fbdev: frame_buffer size: %d bytes\n", fb_size);
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printf("vo_fbdev: bits_per_pixel: %d\n", fb_bpp);
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printf("vo_fbdev: visual: %d\n", fix_info.visual);
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in_width = width;
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in_height = height;
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out_width = width;
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out_height = height;
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pixel_format = format;
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if (!(next_frame = (uint8_t *) malloc(in_width * in_height * (fb_bpp / 8)))) {
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printf("Can't malloc next_frame: %s\n", strerror(errno));
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return 1;
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}
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if (format == IMGFMT_YV12)
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yuv2rgb_init(fb_bpp, MODE_RGB);
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init_done = 1;
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return 0;
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}
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static uint32_t query_format(uint32_t format)
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{
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if (format == IMGFMT_YV12)
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return 1;
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if (format == IMGFMT_RGB32 && fb_bpp == 32)
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return 1;
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switch (format) {
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case IMGFMT_YV12:
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return 1;
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case IMGFMT_RGB32:
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if (fb_bpp == 32)
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return 1;
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break;
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case IMGFMT_RGB24:
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if (fb_bpp == 24)
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return 1;
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break;
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case IMGFMT_RGB16:
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if (fb_bpp == 16)
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return 1;
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break;
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case IMGFMT_RGB15:
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if (fb_bpp == 15)
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return 1;
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break;
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}
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return 0;
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}
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static const vo_info_t *get_info(void)
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{
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return &vo_info;
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}
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static void draw_alpha(int x0, int y0, int w, int h, unsigned char *src,
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unsigned char *srca, int stride)
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{
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int x, y;
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uint8_t *dst;
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if (pixel_format == IMGFMT_YV12) {
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for (y = 0; y < h; y++){
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dst = next_frame + (in_width * (y0 + y) + x0) * (fb_bpp / 8);
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for (x = 0; x < w; x++) {
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if (srca[x]) {
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dst[0] = (dst[0]*(srca[x]^255)+src[x]*(srca[x]))>>8;
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dst[1] = (dst[1]*(srca[x]^255)+src[x]*(srca[x]))>>8;
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dst[2] = (dst[2]*(srca[x]^255)+src[x]*(srca[x]))>>8;
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}
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dst += fb_bpp / 8;
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}
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src += stride;
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srca += stride;
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}
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}
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}
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static uint32_t draw_frame(uint8_t *src[])
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{
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if (pixel_format == IMGFMT_YV12) {
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yuv2rgb(next_frame, src[0], src[1], src[2], in_width,
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in_height, in_width * (fb_bpp / 8),
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in_width, in_width / 2);
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} else {
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int i;
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for (i = 0; i < in_height; i++)
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memcpy(next_frame, src[0], in_width * (fb_bpp / 8));
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}
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return 0;
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}
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static uint32_t draw_slice(uint8_t *src[], int stride[], int w, int h, int x,
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int y)
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{
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uint8_t *dest;
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dest = next_frame + (in_width * y + x) * (fb_bpp / 8);
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yuv2rgb(dest, src[0], src[1], src[2], w, h, in_width * (fb_bpp / 8),
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stride[0], stride[1]);
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return 0;
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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 void flip_page(void)
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{
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int i, out_offset = 0, in_offset = 0;
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vo_draw_text(in_width, in_height, draw_alpha);
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check_events();
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for (i = 0; i < in_height; i++) {
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memcpy(frame_buffer + out_offset, next_frame + in_offset,
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in_width * (fb_bpp / 8));
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out_offset += screen_width;
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in_offset += in_width * (fb_bpp / 8);
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}
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}
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static void uninit(void)
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{
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if (vt_active >= 0)
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ioctl(vt_fd, VT_ACTIVATE, vt_active);
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printf("vo_fbdev: uninit\n");
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free(next_frame);
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munmap(frame_buffer, fb_size);
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}
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