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      1 /**************************************************************************
      2  *
      3  * Copyright 2009 Younes Manton.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 #include <assert.h>
     29 #include <stdlib.h>
     30 
     31 #include <X11/Xlib.h>
     32 #include <X11/extensions/Xvlib.h>
     33 #include <X11/extensions/XvMClib.h>
     34 
     35 #include "vl/vl_compositor.h"
     36 
     37 #include "xvmc_private.h"
     38 
     39 #define XV_BRIGHTNESS "XV_BRIGHTNESS"
     40 #define XV_CONTRAST   "XV_CONTRAST"
     41 #define XV_SATURATION "XV_SATURATION"
     42 #define XV_HUE        "XV_HUE"
     43 #define XV_COLORSPACE "XV_COLORSPACE"
     44 
     45 static const XvAttribute attributes[] = {
     46    { XvGettable | XvSettable, -1000, 1000, XV_BRIGHTNESS },
     47    { XvGettable | XvSettable, -1000, 1000, XV_CONTRAST },
     48    { XvGettable | XvSettable, -1000, 1000, XV_SATURATION },
     49    { XvGettable | XvSettable, -1000, 1000, XV_HUE },
     50    { XvGettable | XvSettable, 0, 1, XV_COLORSPACE }
     51 };
     52 
     53 PUBLIC
     54 XvAttribute* XvMCQueryAttributes(Display *dpy, XvMCContext *context, int *number)
     55 {
     56    XvAttribute *result;
     57 
     58    assert(dpy && number);
     59 
     60    if (!context || !context->privData)
     61       return NULL;
     62 
     63    result = malloc(sizeof(attributes));
     64    if (!result)
     65       return NULL;
     66 
     67    memcpy(result, attributes, sizeof(attributes));
     68    *number = sizeof(attributes) / sizeof(XvAttribute);
     69 
     70    XVMC_MSG(XVMC_TRACE, "[XvMC] Returning %d attributes for context %p.\n", *number, context);
     71 
     72    return result;
     73 }
     74 
     75 PUBLIC
     76 Status XvMCSetAttribute(Display *dpy, XvMCContext *context, Atom attribute, int value)
     77 {
     78    XvMCContextPrivate *context_priv;
     79    const char *attr;
     80    vl_csc_matrix csc;
     81 
     82    assert(dpy);
     83 
     84    if (!context || !context->privData)
     85       return XvMCBadContext;
     86 
     87    context_priv = context->privData;
     88 
     89    attr = XGetAtomName(dpy, attribute);
     90    if (!attr)
     91       return XvMCBadContext;
     92 
     93    if (strcmp(attr, XV_BRIGHTNESS))
     94       context_priv->procamp.brightness = value / 1000.0f;
     95    else if (strcmp(attr, XV_CONTRAST))
     96       context_priv->procamp.contrast = value / 1000.0f + 1.0f;
     97    else if (strcmp(attr, XV_SATURATION))
     98       context_priv->procamp.saturation = value / 1000.0f + 1.0f;
     99    else if (strcmp(attr, XV_HUE))
    100       context_priv->procamp.hue = value / 1000.0f;
    101    else if (strcmp(attr, XV_COLORSPACE))
    102       context_priv->color_standard = value ?
    103          VL_CSC_COLOR_STANDARD_BT_601 :
    104          VL_CSC_COLOR_STANDARD_BT_709;
    105    else
    106       return BadName;
    107 
    108    vl_csc_get_matrix
    109    (
    110       context_priv->color_standard,
    111       &context_priv->procamp, true, &csc
    112    );
    113    vl_compositor_set_csc_matrix(&context_priv->cstate, (const vl_csc_matrix *)&csc);
    114 
    115    XVMC_MSG(XVMC_TRACE, "[XvMC] Set attribute %s to value %d.\n", attr, value);
    116 
    117    return Success;
    118 }
    119 
    120 PUBLIC
    121 Status XvMCGetAttribute(Display *dpy, XvMCContext *context, Atom attribute, int *value)
    122 {
    123    XvMCContextPrivate *context_priv;
    124    const char *attr;
    125 
    126    assert(dpy);
    127 
    128    if (!context || !context->privData)
    129       return XvMCBadContext;
    130 
    131    context_priv = context->privData;
    132 
    133    attr = XGetAtomName(dpy, attribute);
    134    if (!attr)
    135       return XvMCBadContext;
    136 
    137    if (strcmp(attr, XV_BRIGHTNESS))
    138       *value = context_priv->procamp.brightness * 1000;
    139    else if (strcmp(attr, XV_CONTRAST))
    140       *value = context_priv->procamp.contrast * 1000 - 1000;
    141    else if (strcmp(attr, XV_SATURATION))
    142       *value = context_priv->procamp.saturation * 1000 + 1000;
    143    else if (strcmp(attr, XV_HUE))
    144       *value = context_priv->procamp.hue * 1000;
    145    else if (strcmp(attr, XV_COLORSPACE))
    146       *value = context_priv->color_standard == VL_CSC_COLOR_STANDARD_BT_709;
    147    else
    148       return BadName;
    149 
    150    XVMC_MSG(XVMC_TRACE, "[XvMC] Got value %d for attribute %s.\n", *value, attr);
    151 
    152    return Success;
    153 }
    154