From: notaz Date: Wed, 23 Nov 2011 23:29:54 +0000 (+0200) Subject: Add support for border removal X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=sdl_omap.git;a=commitdiff_plain;h=455c8c43b353b60ebbb70caa09ae87be49520838 Add support for border removal --- diff --git a/README.OMAP b/README.OMAP index e1ddb06..2da9e26 100644 --- a/README.OMAP +++ b/README.OMAP @@ -37,10 +37,20 @@ Other environment variables: SDL_OMAP_LAYER_SIZE: Output layer size. Regardless what you set with SDL_SetVideoMode(), output - will be scaled to this size using hardware. Valid values: + will be scaled to this size using hardware with zero processing cost. + Note: scaling amount range is limited to roughly 1/4x-8x. The exact range + depends on various factors like version of the driver or OMAP hardware itself. + Valid values: "WxH", for example "640x480" "fullscreen" to cover whole screen. +SDL_OMAP_BORDER_CUT: + This can be used to move parts of SDL surface out of screen, in other + words cut borders and zoom in. Format: ,,, + For example, "0,0,16,0" would hide top 16 lines offscreen, making 17th + (16th if you count from 0) line the first visible. + Note: like for layer size ranges are limited. + SDL_OMAP_VSYNC: Enables waiting for vertical sync on SDL_Flip() calls. Set to "1" to enable, "0" to disable. diff --git a/src/video/omapdss/config.c b/src/video/omapdss/config.c index a1eb5fd..d84b862 100644 --- a/src/video/omapdss/config.c +++ b/src/video/omapdss/config.c @@ -115,5 +115,16 @@ void omapsdl_config_from_env(struct SDL_PrivateVideoData *pdata) tmp = getenv("SDL_OMAP_NO_TS_TRANSLATE"); if (tmp != NULL) pdata->cfg_no_ts_translate = !!strtol(tmp, NULL, 0); + tmp = getenv("SDL_OMAP_BORDER_CUT"); + if (tmp != NULL) { + int l, r, t, b; + if (sscanf(tmp, "%d,%d,%d,%d", &l, &r, &t, &b) == 4 + && l >= 0 && r >= 0 && t >= 0 && b >= 0) { + pdata->border_l = l, pdata->border_r = r; + pdata->border_t = t, pdata->border_b = b; + } + else + err("border incorrectly specified, ignored"); + } } diff --git a/src/video/omapdss/linux/fbdev.c b/src/video/omapdss/linux/fbdev.c index 9d532a5..afd5531 100644 --- a/src/video/omapdss/linux/fbdev.c +++ b/src/video/omapdss/linux/fbdev.c @@ -94,7 +94,7 @@ void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp, fbdev->fbvar_new.bits_per_pixel = bpp; fbdev->fbvar_new.nonstd = 0; // can set YUV here on omapfb fbdev->buffer_count = buffer_cnt; - fbdev->buffer_write = 1; + fbdev->buffer_write = buffer_cnt > 1 ? 1 : 0; // seems to help a bit to avoid glitches vout_fbdev_wait_vsync(fbdev); diff --git a/src/video/omapdss/omapsdl.h b/src/video/omapdss/omapsdl.h index 1f937c0..d6314d6 100644 --- a/src/video/omapdss/omapsdl.h +++ b/src/video/omapdss/omapsdl.h @@ -32,6 +32,8 @@ struct SDL_PrivateVideoData { int phys_w, phys_h; /* layer */ int layer_x, layer_y, layer_w, layer_h; + /* SDL surface borders to hide */ + int border_l, border_r, border_t, border_b; /* phys -> layer coord multipliers (16.16) */ int ts_xmul, ts_ymul; /* misc/config */ @@ -41,7 +43,8 @@ struct SDL_PrivateVideoData { unsigned int cfg_no_ts_translate:1; }; -int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, +void *osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, + int border_l, int border_r, int border_t, int border_b, int width, int height, int bpp, int doublebuf); void *osdl_video_flip(struct SDL_PrivateVideoData *pdata); int osdl_video_detect_screen(struct SDL_PrivateVideoData *pdata); diff --git a/src/video/omapdss/osdl_video.c b/src/video/omapdss/osdl_video.c index fce7eea..2c22264 100644 --- a/src/video/omapdss/osdl_video.c +++ b/src/video/omapdss/osdl_video.c @@ -303,10 +303,12 @@ static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata, return ret; } -int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, - int width, int height, int bpp, int doublebuf) +void *osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, + int border_l, int border_r, int border_t, int border_b, + int width, int height, int bpp, int doublebuf) { const char *fbname; + void *result; int ret; fbname = get_fb_device(); @@ -318,11 +320,25 @@ int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp); if (ret < 0) - return -1; + return NULL; pdata->fbdev = vout_fbdev_init(fbname, &width, &height, bpp, doublebuf ? 2 : 1); if (pdata->fbdev == NULL) - return -1; + return NULL; + + if (border_l | border_r | border_t | border_b) { + width -= border_l + border_r; + height -= border_t + border_b; + result = vout_fbdev_resize(pdata->fbdev, width, height, bpp, + border_l, border_r, border_t, border_b, doublebuf ? 2 : 1); + } + else { + result = osdl_video_flip(pdata); + } + if (result == NULL) { + osdl_video_finish(pdata); + return NULL; + } if (!pdata->xenv_up) { ret = xenv_init(); @@ -330,7 +346,7 @@ int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, pdata->xenv_up = 1; } - return 0; + return result; } void *osdl_video_flip(struct SDL_PrivateVideoData *pdata) diff --git a/src/video/omapdss/sdlif.c b/src/video/omapdss/sdlif.c index a4443c8..fb690d4 100644 --- a/src/video/omapdss/sdlif.c +++ b/src/video/omapdss/sdlif.c @@ -94,7 +94,7 @@ static SDL_Surface *omap_SetVideoMode(SDL_VideoDevice *this, SDL_Surface *curren struct SDL_PrivateVideoData *pdata = this->hidden; SDL_PixelFormat *format; Uint32 unhandled_flags; - int ret; + void *fbmem; trace("%d, %d, %d, %08x", width, height, bpp, flags); @@ -122,10 +122,23 @@ static SDL_Surface *omap_SetVideoMode(SDL_VideoDevice *this, SDL_Surface *curren flags |= SDL_DOUBLEBUF; } - ret = osdl_video_set_mode(pdata, width, height, bpp, - (flags & SDL_DOUBLEBUF) ? 1 : 0); - if (ret < 0) + if (pdata->border_l | pdata->border_r | pdata->border_t | pdata->border_b) { + if (pdata->border_l + pdata->border_r >= width + || pdata->border_t + pdata->border_b >= height) + { + err("specified border too large, ignoring"); + pdata->border_l = pdata->border_r = pdata->border_t = pdata->border_b = 0; + } + } + + fbmem = osdl_video_set_mode(pdata, + pdata->border_l, pdata->border_r, pdata->border_t, pdata->border_b, + width, height, bpp, (flags & SDL_DOUBLEBUF) ? 1 : 0); + if (fbmem == NULL) { + log("failing on mode %dx%d@%d, doublebuf %s", + width, height, bpp, (flags & SDL_DOUBLEBUF) ? "on" : "off"); return NULL; + } flags |= SDL_FULLSCREEN | SDL_HWSURFACE; unhandled_flags = flags & ~(SDL_FULLSCREEN | SDL_HWSURFACE | SDL_DOUBLEBUF); @@ -138,14 +151,15 @@ static SDL_Surface *omap_SetVideoMode(SDL_VideoDevice *this, SDL_Surface *curren current->w = width; current->h = height; current->pitch = SDL_CalculatePitch(current); + current->pixels = fbmem; if (pdata->layer_w != 0 && pdata->layer_h != 0) { - pdata->ts_xmul = (width << 16) / pdata->layer_w; - pdata->ts_ymul = (height << 16) / pdata->layer_h; + int v_width = width - (pdata->border_l + pdata->border_r); + int v_height = height - (pdata->border_t + pdata->border_b); + pdata->ts_xmul = (v_width << 16) / pdata->layer_w; + pdata->ts_ymul = (v_height << 16) / pdata->layer_h; } - current->pixels = osdl_video_flip(pdata); - return current; } @@ -227,8 +241,8 @@ static int ts_event_cb(void *cb_arg, int x, int y, unsigned int pressure) int xoffs; if (!pdata->cfg_no_ts_translate && pdata->layer_w != 0 && pdata->layer_h != 0) { - x = (x - pdata->layer_x) * pdata->ts_xmul >> 16; - y = (y - pdata->layer_y) * pdata->ts_ymul >> 16; + x = pdata->border_l + ((x - pdata->layer_x) * pdata->ts_xmul >> 16); + y = pdata->border_t + ((y - pdata->layer_y) * pdata->ts_ymul >> 16); clamp(x, 0, this->screen->w); clamp(y, 0, this->screen->h); }