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/*****************************************************************************
* input.c: common input functions
*****************************************************************************
* Copyright (C) 2010 x264 project
*
* Authors: Steven Walters <kemuri9@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
#include "input.h"
const x264_cli_csp_t x264_cli_csps[] = {
[X264_CSP_I420] = { "i420", 3, { 1, .5, .5 }, { 1, .5, .5 }, 2, 2 },
[X264_CSP_I422] = { "i422", 3, { 1, .5, .5 }, { 1, 1, 1 }, 2, 1 },
[X264_CSP_I444] = { "i444", 3, { 1, 1, 1 }, { 1, 1, 1 }, 1, 1 },
[X264_CSP_YV12] = { "yv12", 3, { 1, .5, .5 }, { 1, .5, .5 }, 2, 2 },
[X264_CSP_NV12] = { "nv12", 2, { 1, 1 }, { 1, .5 }, 2, 2 },
[X264_CSP_BGR] = { "bgr", 1, { 3 }, { 1 }, 1, 1 },
[X264_CSP_BGRA] = { "bgra", 1, { 4 }, { 1 }, 1, 1 }
};
int x264_cli_csp_is_invalid( int csp )
{
int csp_mask = csp & X264_CSP_MASK;
return csp_mask <= X264_CSP_NONE || csp_mask >= X264_CSP_CLI_MAX || csp & X264_CSP_OTHER;
}
uint64_t x264_cli_pic_plane_size( int csp, int width, int height, int plane )
{
int csp_mask = csp & X264_CSP_MASK;
if( x264_cli_csp_is_invalid( csp ) || plane < 0 || plane >= x264_cli_csps[csp_mask].planes )
return 0;
uint64_t size = (uint64_t)width * height;
size *= x264_cli_csps[csp_mask].width[plane] * x264_cli_csps[csp_mask].height[plane];
return size;
}
uint64_t x264_cli_pic_size( int csp, int width, int height )
{
if( x264_cli_csp_is_invalid( csp ) )
return 0;
uint64_t size = 0;
int csp_mask = csp & X264_CSP_MASK;
for( int i = 0; i < x264_cli_csps[csp_mask].planes; i++ )
size += x264_cli_pic_plane_size( csp, width, height, i );
return size;
}
int x264_cli_pic_alloc( cli_pic_t *pic, int csp, int width, int height )
{
memset( pic, 0, sizeof(cli_pic_t) );
int csp_mask = csp & X264_CSP_MASK;
if( x264_cli_csp_is_invalid( csp ) )
pic->img.planes = 0;
else
pic->img.planes = x264_cli_csps[csp_mask].planes;
pic->img.csp = csp;
pic->img.width = width;
pic->img.height = height;
for( int i = 0; i < pic->img.planes; i++ )
{
pic->img.plane[i] = x264_malloc( x264_cli_pic_plane_size( csp, width, height, i ) );
if( !pic->img.plane[i] )
return -1;
pic->img.stride[i] = width * x264_cli_csps[csp_mask].width[i];
}
return 0;
}
void x264_cli_pic_clean( cli_pic_t *pic )
{
for( int i = 0; i < pic->img.planes; i++ )
x264_free( pic->img.plane[i] );
memset( pic, 0, sizeof(cli_pic_t) );
}
const x264_cli_csp_t *x264_cli_get_csp( int csp )
{
if( x264_cli_csp_is_invalid( csp ) )
return NULL;
return x264_cli_csps + (csp&X264_CSP_MASK);
}
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