| /* |
| * 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, AVCodecContext *avctx) |
| { |
| if (avctx->bits_per_raw_sample == 10) { |
| dsp->idct_put = prores_idct_put_10_c; |
| dsp->idct_permutation_type = FF_IDCT_PERM_NONE; |
| } else if (avctx->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, avctx); |
| |
| ff_init_scantable_permutation(dsp->idct_permutation, |
| dsp->idct_permutation_type); |
| return 0; |
| } |