/*
* Copyright (C) 2006-2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include "intel_driver.h"
#include "intel_media.h"
//static pthread_mutex_t free_avc_surface_lock = PTHREAD_MUTEX_INITIALIZER;
void
gen_free_avc_surface(void **data)
{
GenAvcSurface *avc_surface;
// pthread_mutex_lock(&free_avc_surface_lock);
avc_surface = *data;
if (!avc_surface) {
// pthread_mutex_unlock(&free_avc_surface_lock);
return;
}
dri_bo_unreference(avc_surface->dmv_top);
avc_surface->dmv_top = NULL;
dri_bo_unreference(avc_surface->dmv_bottom);
avc_surface->dmv_bottom = NULL;
*data = NULL;
// pthread_mutex_unlock(&free_avc_surface_lock);
}
/* This is to convert one float to the given format interger.
* For example: 1.25 to S1.6 or U2.6 and so on
*/
int intel_format_convert(float src, int out_int_bits, int out_frac_bits,int out_sign_flag)
{
unsigned char negative_flag = (src < 0.0) ? 1 : 0;
float src_1 = (!negative_flag)? src: -src ;
unsigned int factor = 1 << out_frac_bits;
int output_value = 0;
unsigned int integer_part = floorf(src_1);
unsigned int fraction_part = ((int)((src_1 - integer_part) * factor)) & (factor - 1) ;
output_value = (integer_part << out_frac_bits) | fraction_part;
if(negative_flag)
output_value = (~output_value + 1) & ((1 <<(out_int_bits + out_frac_bits)) -1);
if(out_sign_flag == 1 && negative_flag)
{
output_value |= negative_flag <<(out_int_bits + out_frac_bits);
}
return output_value;
}