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https://github.com/RaySollium99/libpicofe.git
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fbdev: save and restore support
git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@950 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
f620fa7ade
commit
323db72934
3 changed files with 72 additions and 14 deletions
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@ -22,6 +22,8 @@
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#include "fbdev.h"
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#define PFX "fbdev: "
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struct vout_fbdev {
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int fd;
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void *mem;
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@ -32,6 +34,8 @@ struct vout_fbdev {
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int fb_size;
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int buffer_count;
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int top_border, bottom_border;
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void *mem_saved;
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size_t mem_saved_size;
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};
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void *vout_fbdev_flip(struct vout_fbdev *fbdev)
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@ -83,7 +87,7 @@ void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
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{
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if (fbdev->fbvar_new.bits_per_pixel != bpp ||
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w != fbdev->fbvar_new.xres || h != fbdev->fbvar_new.yres)
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printf(" switching to %dx%d@%d\n", w, h, bpp);
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printf(PFX "switching to %dx%d@%d\n", w, h, bpp);
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fbdev->fbvar_new.xres = w;
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fbdev->fbvar_new.yres = h;
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@ -105,12 +109,12 @@ void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
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fbdev->fbvar_new.yres_virtual = h_total;
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ret = ioctl(fbdev->fd, FBIOPUT_VSCREENINFO, &fbdev->fbvar_new);
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if (ret == -1) {
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perror("FBIOPUT_VSCREENINFO ioctl");
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perror(PFX "FBIOPUT_VSCREENINFO ioctl");
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return NULL;
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}
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fbdev->buffer_count = 1;
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fbdev->buffer_write = 0;
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fprintf(stderr, "Warning: failed to increase virtual resolution, "
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fprintf(stderr, PFX "Warning: failed to increase virtual resolution, "
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"multibuffering disabled\n");
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}
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@ -129,7 +133,7 @@ void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
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fbdev->mem = mmap(0, mem_size, PROT_WRITE|PROT_READ, MAP_SHARED, fbdev->fd, 0);
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if (fbdev->mem == MAP_FAILED && fbdev->buffer_count > 1) {
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fprintf(stderr, "Warning: can't map %zd bytes, doublebuffering disabled\n", mem_size);
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fprintf(stderr, PFX "Warning: can't map %zd bytes, doublebuffering disabled\n", mem_size);
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fbdev->buffer_count = 1;
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fbdev->buffer_write = 0;
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mem_size = fbdev->fb_size;
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@ -138,7 +142,7 @@ void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
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if (fbdev->mem == MAP_FAILED) {
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fbdev->mem = NULL;
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fbdev->mem_size = 0;
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perror("mmap framebuffer");
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perror(PFX "mmap framebuffer");
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return NULL;
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}
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@ -184,14 +188,14 @@ struct vout_fbdev *vout_fbdev_init(const char *fbdev_name, int *w, int *h, int b
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fbdev->fd = open(fbdev_name, O_RDWR);
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if (fbdev->fd == -1) {
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fprintf(stderr, "%s: ", fbdev_name);
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fprintf(stderr, PFX "%s: ", fbdev_name);
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perror("open");
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goto fail_open;
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}
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ret = ioctl(fbdev->fd, FBIOGET_VSCREENINFO, &fbdev->fbvar_old);
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if (ret == -1) {
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perror("FBIOGET_VSCREENINFO ioctl");
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perror(PFX "FBIOGET_VSCREENINFO ioctl");
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goto fail;
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}
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@ -208,8 +212,8 @@ struct vout_fbdev *vout_fbdev_init(const char *fbdev_name, int *w, int *h, int b
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if (pret == NULL)
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goto fail;
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printf("%s: %ix%i@%d\n", fbdev_name, fbdev->fbvar_new.xres, fbdev->fbvar_new.yres,
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fbdev->fbvar_new.bits_per_pixel);
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printf(PFX "%s: %ix%i@%d\n", fbdev_name, fbdev->fbvar_new.xres,
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fbdev->fbvar_new.yres, fbdev->fbvar_new.bits_per_pixel);
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*w = fbdev->fbvar_new.xres;
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*h = fbdev->fbvar_new.yres;
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@ -219,7 +223,7 @@ struct vout_fbdev *vout_fbdev_init(const char *fbdev_name, int *w, int *h, int b
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ret = 0;
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ret = ioctl(fbdev->fd, FBIO_WAITFORVSYNC, &ret);
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if (ret != 0)
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fprintf(stderr, "Warning: vsync doesn't seem to be supported\n");
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fprintf(stderr, PFX "Warning: vsync doesn't seem to be supported\n");
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if (fbdev->buffer_count > 1) {
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fbdev->buffer_write = 0;
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@ -227,7 +231,7 @@ struct vout_fbdev *vout_fbdev_init(const char *fbdev_name, int *w, int *h, int b
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ret = ioctl(fbdev->fd, FBIOPAN_DISPLAY, &fbdev->fbvar_new);
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if (ret != 0) {
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fbdev->buffer_count = 1;
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fprintf(stderr, "Warning: can't pan display, doublebuffering disabled\n");
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fprintf(stderr, PFX "Warning: can't pan display, doublebuffering disabled\n");
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}
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}
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@ -241,14 +245,66 @@ fail_open:
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return NULL;
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}
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void vout_fbdev_finish(struct vout_fbdev *fbdev)
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static void vout_fbdev_release(struct vout_fbdev *fbdev)
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{
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ioctl(fbdev->fd, FBIOPUT_VSCREENINFO, &fbdev->fbvar_old);
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if (fbdev->mem != MAP_FAILED)
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munmap(fbdev->mem, fbdev->mem_size);
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fbdev->mem = NULL;
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}
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int vout_fbdev_save(struct vout_fbdev *fbdev)
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{
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void *tmp;
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if (fbdev == NULL || fbdev->mem == NULL || fbdev->mem == MAP_FAILED) {
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fprintf(stderr, PFX "bad args for save\n");
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return -1;
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}
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if (fbdev->mem_saved_size < fbdev->mem_size) {
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tmp = realloc(fbdev->mem_saved, fbdev->mem_size);
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if (tmp == NULL)
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return -1;
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fbdev->mem_saved = tmp;
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}
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memcpy(fbdev->mem_saved, fbdev->mem, fbdev->mem_size);
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fbdev->mem_saved_size = fbdev->mem_size;
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vout_fbdev_release(fbdev);
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return 0;
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}
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int vout_fbdev_restore(struct vout_fbdev *fbdev)
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{
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int ret;
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if (fbdev == NULL || fbdev->mem != NULL) {
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fprintf(stderr, PFX "bad args/state for restore\n");
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return -1;
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}
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fbdev->mem = mmap(0, fbdev->mem_size, PROT_WRITE|PROT_READ, MAP_SHARED, fbdev->fd, 0);
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if (fbdev->mem == MAP_FAILED) {
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perror(PFX "restore: memory restore failed");
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return -1;
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}
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memcpy(fbdev->mem, fbdev->mem_saved, fbdev->mem_size);
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ret = ioctl(fbdev->fd, FBIOPUT_VSCREENINFO, &fbdev->fbvar_new);
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if (ret == -1) {
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perror(PFX "restore: FBIOPUT_VSCREENINFO");
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return -1;
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}
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return 0;
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}
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void vout_fbdev_finish(struct vout_fbdev *fbdev)
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{
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vout_fbdev_release(fbdev);
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if (fbdev->fd >= 0)
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close(fbdev->fd);
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fbdev->mem = NULL;
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fbdev->fd = -1;
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free(fbdev);
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}
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@ -9,4 +9,6 @@ void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
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void vout_fbdev_clear(struct vout_fbdev *fbdev);
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void vout_fbdev_clear_lines(struct vout_fbdev *fbdev, int y, int count);
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int vout_fbdev_get_fd(struct vout_fbdev *fbdev);
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int vout_fbdev_save(struct vout_fbdev *fbdev);
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int vout_fbdev_restore(struct vout_fbdev *fbdev);
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void vout_fbdev_finish(struct vout_fbdev *fbdev);
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@ -3,7 +3,7 @@
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#define XENV_CAP_MOUSE (1<<1)
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/* xenv_flags specify if we need keys and mouse,
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* flag is removed if input is not available */
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* on return, flag is removed if input is not available */
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int xenv_init(int *xenv_flags, const char *window_title);
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/* read events from X, calling key_cb for key, mouseb_cb for mouse button
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