xref: /xsrc/external/mit/xf86-video-intel/dist/src/uxa/intel_uxa_video.c

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/*
 * i830_video.c: i830/i845 Xv driver.
 *
 * Copyright © 2002 by Alan Hourihane and David Dawes
 *
 * Authors:
 *	Alan Hourihane <alanh@tungstengraphics.com>
 *	David Dawes <dawes@xfree86.org>
 *
 * Derived from i810 Xv driver:
 *
 * Authors of i810 code:
 * 	Jonathan Bian <jonathan.bian@intel.com>
 *      Offscreen Images:
 *        Matt Sottek <matthew.j.sottek@intel.com>
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <inttypes.h>
#include <math.h>
#include <string.h>
#include <assert.h>
#include <errno.h>

#include "xorg-server.h"
#include "xf86.h"
#include "xf86_OSproc.h"
#include "compiler.h"
#include "xf86Pci.h"
#include "xf86fbman.h"
#include "xf86drm.h"
#include "regionstr.h"
#include "randrstr.h"
#include "windowstr.h"
#include "damage.h"
#include "intel.h"
#include "intel_uxa.h"
#include "i830_reg.h"
#include "xf86xv.h"
#include <X11/extensions/Xv.h>
#include "dixstruct.h"
#include "fourcc.h"

#ifdef INTEL_XVMC
#define _INTEL_XVMC_SERVER_
#include "intel_xvmc.h"
#endif

/* overlay debugging printf function */
#if 0
#define UXA_VIDEO_DEBUG ErrorF
#else
#define UXA_VIDEO_DEBUG if (0) ErrorF
#endif

static int intel_uxa_video_put_image_textured(ScrnInfoPtr, short, short, short, short, short, short,
			short, short, int, unsigned char *, short, short,
			Bool, RegionPtr, pointer, DrawablePtr);

static int
intel_uxa_video_set_port_attribute(ScrnInfoPtr scrn,
			     Atom attribute, INT32 value, pointer data)
{
	intel_adaptor_private *adaptor_priv = (intel_adaptor_private *) data;

	if (attribute == intel_xv_Brightness) {
		if ((value < -128) || (value > 127))
			return BadValue;
		adaptor_priv->brightness = value;
		return Success;
	} else if (attribute == intel_xv_Contrast) {
		if ((value < 0) || (value > 255))
			return BadValue;
		adaptor_priv->contrast = value;
		return Success;
	} else if (attribute == intel_xv_SyncToVblank) {
		if ((value < -1) || (value > 1))
			return BadValue;
		adaptor_priv->SyncToVblank = value;
		return Success;
	} else {
		return BadMatch;
	}
}


static int xvmc_passthrough(int id)
{
#ifdef INTEL_XVMC
	return id == FOURCC_XVMC;
#else
	return 0;
#endif
}


static void
intel_wait_for_scanline(ScrnInfoPtr scrn, PixmapPtr pixmap,
			xf86CrtcPtr crtc, RegionPtr clipBoxes)
{
	intel_screen_private *intel = intel_get_screen_private(scrn);
	pixman_box16_t box, crtc_box;
	int pipe, event;
	Bool full_height;
	int y1, y2;

	pipe = -1;
	if (scrn->vtSema && pixmap_is_scanout(pixmap))
		pipe = intel_crtc_to_pipe(crtc);
	if (pipe < 0)
		return;

	box = *REGION_EXTENTS(unused, clipBoxes);

	if (crtc->transform_in_use)
		pixman_f_transform_bounds(&crtc->f_framebuffer_to_crtc, &box);

	/* We could presume the clip was correctly computed... */
	intel_crtc_box(crtc, &crtc_box);
	intel_box_intersect(&box, &crtc_box, &box);

	/*
	 * Make sure we don't wait for a scanline that will
	 * never occur
	 */
	y1 = (crtc_box.y1 <= box.y1) ? box.y1 - crtc_box.y1 : 0;
	y2 = (box.y2 <= crtc_box.y2) ?
		box.y2 - crtc_box.y1 : crtc_box.y2 - crtc_box.y1;
	if (y2 <= y1)
		return;

	full_height = FALSE;
	if (y1 == 0 && y2 == (crtc_box.y2 - crtc_box.y1))
		full_height = TRUE;

	/*
	 * Pre-965 doesn't have SVBLANK, so we need a bit
	 * of extra time for the blitter to start up and
	 * do its job for a full height blit
	 */
	if (full_height && INTEL_INFO(intel)->gen < 040)
		y2 -= 2;

	if (pipe == 0) {
		pipe = MI_LOAD_SCAN_LINES_DISPLAY_PIPEA;
		event = MI_WAIT_FOR_PIPEA_SCAN_LINE_WINDOW;
		if (full_height && INTEL_INFO(intel)->gen >= 040)
			event = MI_WAIT_FOR_PIPEA_SVBLANK;
	} else {
		pipe = MI_LOAD_SCAN_LINES_DISPLAY_PIPEB;
		event = MI_WAIT_FOR_PIPEB_SCAN_LINE_WINDOW;
		if (full_height && INTEL_INFO(intel)->gen >= 040)
			event = MI_WAIT_FOR_PIPEB_SVBLANK;
	}

	if (crtc->mode.Flags & V_INTERLACE) {
		/* DSL count field lines */
		y1 /= 2;
		y2 /= 2;
	}

	BEGIN_BATCH(5);
	/* The documentation says that the LOAD_SCAN_LINES command
	 * always comes in pairs. Don't ask me why. */
	OUT_BATCH(MI_LOAD_SCAN_LINES_INCL | pipe);
	OUT_BATCH((y1 << 16) | (y2-1));
	OUT_BATCH(MI_LOAD_SCAN_LINES_INCL | pipe);
	OUT_BATCH((y1 << 16) | (y2-1));
	OUT_BATCH(MI_WAIT_FOR_EVENT | event);
	ADVANCE_BATCH();
}

/*
 * The source rectangle of the video is defined by (src_x, src_y, src_w, src_h).
 * The dest rectangle of the video is defined by (drw_x, drw_y, drw_w, drw_h).
 * id is a fourcc code for the format of the video.
 * buf is the pointer to the source data in system memory.
 * width and height are the w/h of the source data.
 * If "sync" is TRUE, then we must be finished with *buf at the point of return
 * (which we always are).
 * clipBoxes is the clipping region in screen space.
 * data is a pointer to our port private.
 * drawable is some Drawable, which might not be the screen in the case of
 * compositing.  It's a new argument to the function in the 1.1 server.
 */
static int
intel_uxa_video_put_image_textured(ScrnInfoPtr scrn,
                                   short src_x, short src_y,
                                   short drw_x, short drw_y,
                                   short src_w, short src_h,
                                   short drw_w, short drw_h,
                                   int id, unsigned char *buf,
                                   short width, short height,
                                   Bool sync, RegionPtr clipBoxes, pointer data,
                                   DrawablePtr drawable)
{
	intel_screen_private *intel = intel_get_screen_private(scrn);
	intel_adaptor_private *adaptor_priv = (intel_adaptor_private *) data;
	PixmapPtr pixmap = get_drawable_pixmap(drawable);
	int dstPitch, dstPitch2;
	BoxRec dstBox;
	xf86CrtcPtr crtc;
	int top, left, npixels, nlines;

	if (!intel_uxa_pixmap_is_offscreen(pixmap))
		return BadAlloc;

#if 0
	ErrorF("I830PutImage: src: (%d,%d)(%d,%d), dst: (%d,%d)(%d,%d)\n"
	       "width %d, height %d\n", src_x, src_y, src_w, src_h, drw_x,
	       drw_y, drw_w, drw_h, width, height);
#endif

	if (!intel_clip_video_helper(scrn,
				    adaptor_priv,
				    &crtc,
				    &dstBox,
				    src_x, src_y, drw_x, drw_y,
				    src_w, src_h, drw_w, drw_h,
				    id,
				    &top, &left, &npixels, &nlines, clipBoxes,
				    width, height))
		return Success;

	if (xvmc_passthrough(id)) {
		uint32_t *gem_handle = (uint32_t *)buf;
		int size;

		intel_setup_dst_params(scrn, adaptor_priv, width, height,
				&dstPitch, &dstPitch2, &size, id);

		if (IS_I915G(intel) || IS_I915GM(intel)) {
			/* XXX: i915 is not support and needs some
			 * serious care.  grep for KMS in i915_hwmc.c */
			return BadAlloc;
		}

		if (adaptor_priv->buf)
			drm_intel_bo_unreference(adaptor_priv->buf);

		adaptor_priv->buf =
			drm_intel_bo_gem_create_from_name(intel->bufmgr,
							  "xvmc surface",
							  *gem_handle);
		if (adaptor_priv->buf == NULL)
			return BadAlloc;

		adaptor_priv->reusable = FALSE;
	} else {
		if (!intel_video_copy_data(scrn, adaptor_priv, width, height,
					  &dstPitch, &dstPitch2,
					  top, left, npixels, nlines, id, buf))
			return BadAlloc;
	}

	if (crtc && adaptor_priv->SyncToVblank != 0 && INTEL_INFO(intel)->gen < 060) {
		intel_wait_for_scanline(scrn, pixmap, crtc, clipBoxes);
	}

	if (INTEL_INFO(intel)->gen >= 060) {
		Gen6DisplayVideoTextured(scrn, adaptor_priv, id, clipBoxes,
					 width, height, dstPitch, dstPitch2,
					 src_w, src_h,
					 drw_w, drw_h, pixmap);
	} else if (INTEL_INFO(intel)->gen >= 040) {
		I965DisplayVideoTextured(scrn, adaptor_priv, id, clipBoxes,
					 width, height, dstPitch, dstPitch2,
					 src_w, src_h,
					 drw_w, drw_h, pixmap);
	} else {
		I915DisplayVideoTextured(scrn, adaptor_priv, id, clipBoxes,
					 width, height, dstPitch, dstPitch2,
					 src_w, src_h, drw_w, drw_h,
					 pixmap);
	}

	intel_get_screen_private(scrn)->needs_flush = TRUE;
	DamageDamageRegion(drawable, clipBoxes);

	/* And make sure the WAIT_FOR_EVENT is queued before any
	 * modesetting/dpms operations on the pipe.
	 */
	intel_batch_submit(scrn);

	return Success;
}

XF86VideoAdaptorPtr intel_uxa_video_setup_image_textured(ScreenPtr screen)
{
	ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
	intel_screen_private *intel = intel_get_screen_private(scrn);
	XF86VideoAdaptorPtr adapt;
	intel_adaptor_private *adaptor_privs;
	DevUnion *devUnions;
	int nports = 16, i;

	UXA_VIDEO_DEBUG("intel_video_overlay_setup_image\n");

	adapt = calloc(1, sizeof(XF86VideoAdaptorRec));
	adaptor_privs = calloc(nports, sizeof(intel_adaptor_private));
	devUnions = calloc(nports, sizeof(DevUnion));
	if (adapt == NULL || adaptor_privs == NULL || devUnions == NULL) {
		free(adapt);
		free(adaptor_privs);
		free(devUnions);
		return NULL;
	}

	adapt->type = XvWindowMask | XvInputMask | XvImageMask;
	adapt->flags = 0;
	adapt->name = "Intel(R) Textured Video";
	adapt->nEncodings = 1;
	adapt->pEncodings = xnfalloc(sizeof(intel_xv_dummy_encoding));
	memcpy(adapt->pEncodings, intel_xv_dummy_encoding, sizeof(intel_xv_dummy_encoding));
	adapt->nFormats = NUM_FORMATS;
	adapt->pFormats = intel_xv_formats;
	adapt->nPorts = nports;
	adapt->pPortPrivates = devUnions;
	adapt->nAttributes = 0;
	adapt->pAttributes = NULL;
	if (IS_I915G(intel) || IS_I915GM(intel))
		adapt->nImages = NUM_IMAGES - XVMC_IMAGE;
	else
		adapt->nImages = NUM_IMAGES;

	adapt->pImages = intel_xv_images;
	adapt->PutVideo = NULL;
	adapt->PutStill = NULL;
	adapt->GetVideo = NULL;
	adapt->GetStill = NULL;
	adapt->StopVideo = intel_video_stop_video;
	adapt->SetPortAttribute = intel_uxa_video_set_port_attribute;
	adapt->GetPortAttribute = intel_video_get_port_attribute;
	adapt->QueryBestSize = intel_video_query_best_size;
	adapt->PutImage = intel_uxa_video_put_image_textured;
	adapt->QueryImageAttributes = intel_video_query_image_attributes;

	for (i = 0; i < nports; i++) {
		intel_adaptor_private *adaptor_priv = &adaptor_privs[i];

		adaptor_priv->textured = TRUE;
		adaptor_priv->videoStatus = 0;
		adaptor_priv->buf = NULL;
		adaptor_priv->old_buf[0] = NULL;
		adaptor_priv->old_buf[1] = NULL;

		adaptor_priv->rotation = RR_Rotate_0;
		adaptor_priv->SyncToVblank = 1;

		/* gotta uninit this someplace, XXX: shouldn't be necessary for textured */
		REGION_NULL(screen, &adaptor_priv->clip);

		adapt->pPortPrivates[i].ptr = (pointer) (adaptor_priv);
	}

	intel_xv_SyncToVblank = MAKE_ATOM("XV_SYNC_TO_VBLANK");

	return adapt;
}