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Diffstat (limited to 'libavcodec/vc2enc_dwt.h')
| -rw-r--r-- | libavcodec/vc2enc_dwt.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libavcodec/vc2enc_dwt.h b/libavcodec/vc2enc_dwt.h new file mode 100644 index 0000000000..ff595d4d7a --- /dev/null +++ b/libavcodec/vc2enc_dwt.h @@ -0,0 +1,54 @@ +/* + * Copyright (C) 2016 Open Broadcast Systems Ltd. + * Author 2016 Rostislav Pehlivanov <atomnuker@gmail.com> + * + * 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_VC2_TRANSFORMS_H +#define AVCODEC_VC2_TRANSFORMS_H + +#include <stdint.h> + +typedef int16_t dwtcoef; +typedef int32_t qcoef; /* Quantization needs more precision */ + +/* Only Deslauriers-Dubuc (9,7) and LeGall (5,3) supported! */ + +enum VC2TransformType { + VC2_TRANSFORM_9_7 = 0, /* Deslauriers-Dubuc (9,7) */ + VC2_TRANSFORM_5_3 = 1, /* LeGall (5,3) */ + VC2_TRANSFORM_13_7 = 2, /* Deslauriers-Dubuc (13,7) */ + VC2_TRANSFORM_HAAR = 3, /* Haar without shift */ + VC2_TRANSFORM_HAAR_S = 4, /* Haar with 1 shift/lvl */ + VC2_TRANSFORM_FIDEL = 5, /* Fidelity filter */ + VC2_TRANSFORM_9_7_I = 6, /* Daubechies (9,7) */ + + VC2_TRANSFORMS_NB +}; + +typedef struct VC2TransformContext { + dwtcoef *buffer; + void (*vc2_subband_dwt[VC2_TRANSFORMS_NB])(struct VC2TransformContext *t, + dwtcoef *data, ptrdiff_t stride, + int width, int height); +} VC2TransformContext; + +int ff_vc2enc_init_transforms(VC2TransformContext *t, int p_width, int p_height); +void ff_vc2enc_free_transforms(VC2TransformContext *t); + +#endif /* AVCODEC_VC2_TRANSFORMS_H */ |