/* * Canopus HQ/HQA decoder * * 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 */ #ifndef AVCODEC_HQ_HQA_H #define AVCODEC_HQ_HQA_H #include <stdint.h> #include "avcodec.h" #include "bytestream.h" #include "hq_hqadsp.h" #include "vlc.h" #define NUM_HQ_AC_ENTRIES 746 #define NUM_HQ_PROFILES 22 #define NUM_HQ_QUANTS 16 typedef struct HQContext { AVCodecContext *avctx; HQDSPContext hqhqadsp; GetByteContext gbc; VLC hq_ac_vlc; VLC hqa_cbp_vlc; DECLARE_ALIGNED(16, int16_t, block)[12][64]; } HQContext; typedef struct HQProfile { const uint8_t *perm_tab; int width, height; int num_slices; int tab_w, tab_h; } HQProfile; extern const int32_t * const ff_hq_quants[16][2][4]; extern const HQProfile ff_hq_profile[NUM_HQ_PROFILES]; extern const uint8_t ff_hq_ac_skips[NUM_HQ_AC_ENTRIES]; extern const int16_t ff_hq_ac_syms [NUM_HQ_AC_ENTRIES]; int ff_hq_init_vlcs(HQContext *c); #endif /* AVCODEC_HQ_HQA_H */