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/*
* Apple ProRes compatible decoder
*
* Copyright (c) 2010-2011 Maxim Poliakovski
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "idctdsp.h"
#include "proresdsp.h"
#include "simple_idct.h"
#define CLIP_MIN (1 << 2) ///< minimum value for clipping resulting pixels
#define CLIP_MAX_10 (1 << 10) - CLIP_MIN - 1 ///< maximum value for clipping resulting pixels
#define CLIP_MAX_12 (1 << 12) - CLIP_MIN - 1 ///< maximum value for clipping resulting pixels
#define CLIP_10(x) (av_clip((x), CLIP_MIN, CLIP_MAX_10))
#define CLIP_12(x) (av_clip((x), CLIP_MIN, CLIP_MAX_12))
/**
* Add bias value, clamp and output pixels of a slice
*/
static inline void put_pixel(uint16_t *dst, ptrdiff_t linesize, const int16_t *in, int bits_per_raw_sample) {
int x, y, src_offset, dst_offset;
for (y = 0, dst_offset = 0; y < 8; y++, dst_offset += linesize) {
for (x = 0; x < 8; x++) {
src_offset = (y << 3) + x;
if (bits_per_raw_sample == 10) {
dst[dst_offset + x] = CLIP_10(in[src_offset]);
} else {//12b
dst[dst_offset + x] = CLIP_12(in[src_offset]);
}
}
}
}
static void put_pixels_10(uint16_t *dst, ptrdiff_t linesize, const int16_t *in)
{
put_pixel(dst, linesize, in, 10);
}
static void put_pixels_12(uint16_t *dst, ptrdiff_t linesize, const int16_t *in)
{
put_pixel(dst, linesize, in, 12);
}
static void prores_idct_put_10_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
{
ff_prores_idct_10(block, qmat);
put_pixels_10(out, linesize >> 1, block);
}
static void prores_idct_put_12_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat)
{
ff_prores_idct_12(block, qmat);
put_pixels_12(out, linesize >> 1, block);
}
av_cold int ff_proresdsp_init(ProresDSPContext *dsp, int bits_per_raw_sample)
{
if (bits_per_raw_sample == 10) {
dsp->idct_put = prores_idct_put_10_c;
dsp->idct_permutation_type = FF_IDCT_PERM_NONE;
} else if (bits_per_raw_sample == 12) {
dsp->idct_put = prores_idct_put_12_c;
dsp->idct_permutation_type = FF_IDCT_PERM_NONE;
} else {
return AVERROR_BUG;
}
#if ARCH_X86
ff_proresdsp_init_x86(dsp, bits_per_raw_sample);
#endif
ff_init_scantable_permutation(dsp->idct_permutation,
dsp->idct_permutation_type);
return 0;
}
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