2 * Copyright (C) 2006-2012 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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29 #include "intel_driver.h"
30 #include "intel_media.h"
32 static pthread_mutex_t free_avc_surface_lock = PTHREAD_MUTEX_INITIALIZER;
35 gen_free_avc_surface(void **data)
37 GenAvcSurface *avc_surface;
39 pthread_mutex_lock(&free_avc_surface_lock);
44 pthread_mutex_unlock(&free_avc_surface_lock);
49 dri_bo_unreference(avc_surface->dmv_top);
50 avc_surface->dmv_top = NULL;
51 dri_bo_unreference(avc_surface->dmv_bottom);
52 avc_surface->dmv_bottom = NULL;
57 pthread_mutex_unlock(&free_avc_surface_lock);
60 /* This is to convert one float to the given format interger.
61 * For example: 1.25 to S1.6 or U2.6 and so on
63 int intel_format_convert(float src, int out_int_bits, int out_frac_bits,int out_sign_flag)
65 unsigned char negative_flag = (src < 0.0) ? 1 : 0;
66 float src_1 = (!negative_flag)? src: -src ;
67 unsigned int factor = 1 << out_frac_bits;
70 unsigned int integer_part = floor(src_1);
71 unsigned int fraction_part = ((int)((src_1 - integer_part) * factor)) & (factor - 1) ;
73 output_value = (integer_part << out_frac_bits) | fraction_part;
76 output_value = (~output_value + 1) & ((1 <<(out_int_bits + out_frac_bits)) -1);
78 if(out_sign_flag == 1 && negative_flag)
80 output_value |= negative_flag <<(out_int_bits + out_frac_bits);