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/* |
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* Apple ProRes compatible decoder |
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* |
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* Copyright (c) 2010-2011 Maxim Poliakovski |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "config.h" |
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#include "libavutil/attributes.h" |
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#include "libavutil/common.h" |
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#include "idctdsp.h" |
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#include "proresdsp.h" |
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#include "simple_idct.h" |
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#define CLIP_MIN (1 << 2) ///< minimum value for clipping resulting pixels |
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#define CLIP_MAX_10 (1 << 10) - CLIP_MIN - 1 ///< maximum value for clipping resulting pixels |
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#define CLIP_MAX_12 (1 << 12) - CLIP_MIN - 1 ///< maximum value for clipping resulting pixels |
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#define CLIP_10(x) (av_clip((x), CLIP_MIN, CLIP_MAX_10)) |
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#define CLIP_12(x) (av_clip((x), CLIP_MIN, CLIP_MAX_12)) |
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/** |
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* Add bias value, clamp and output pixels of a slice |
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*/ |
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static inline void put_pixel(uint16_t *dst, ptrdiff_t linesize, const int16_t *in, int bits_per_raw_sample) { |
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int x, y, src_offset, dst_offset; |
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✓✓ |
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for (y = 0, dst_offset = 0; y < 8; y++, dst_offset += linesize) { |
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✓✓ |
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for (x = 0; x < 8; x++) { |
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src_offset = (y << 3) + x; |
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✓✓ |
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if (bits_per_raw_sample == 10) { |
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dst[dst_offset + x] = CLIP_10(in[src_offset]); |
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} else {//12b |
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dst[dst_offset + x] = CLIP_12(in[src_offset]); |
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} |
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} |
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} |
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} |
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static void put_pixels_10(uint16_t *dst, ptrdiff_t linesize, const int16_t *in) |
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{ |
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put_pixel(dst, linesize, in, 10); |
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} |
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static void put_pixels_12(uint16_t *dst, ptrdiff_t linesize, const int16_t *in) |
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{ |
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put_pixel(dst, linesize, in, 12); |
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} |
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static void prores_idct_put_10_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat) |
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{ |
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ff_prores_idct_10(block, qmat); |
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put_pixels_10(out, linesize >> 1, block); |
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} |
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static void prores_idct_put_12_c(uint16_t *out, ptrdiff_t linesize, int16_t *block, const int16_t *qmat) |
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{ |
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ff_prores_idct_12(block, qmat); |
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put_pixels_12(out, linesize >> 1, block); |
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} |
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av_cold int ff_proresdsp_init(ProresDSPContext *dsp, AVCodecContext *avctx) |
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{ |
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✓✓ |
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if (avctx->bits_per_raw_sample == 10) { |
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dsp->idct_put = prores_idct_put_10_c; |
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dsp->idct_permutation_type = FF_IDCT_PERM_NONE; |
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✓✗ |
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} else if (avctx->bits_per_raw_sample == 12) { |
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dsp->idct_put = prores_idct_put_12_c; |
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dsp->idct_permutation_type = FF_IDCT_PERM_NONE; |
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} else { |
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return AVERROR_BUG; |
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} |
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if (ARCH_X86) |
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ff_proresdsp_init_x86(dsp, avctx); |
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ff_init_scantable_permutation(dsp->idct_permutation, |
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dsp->idct_permutation_type); |
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return 0; |
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} |