122 lines
4.7 KiB
C
Executable file
122 lines
4.7 KiB
C
Executable file
/*
|
|
* 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_IDCTDSP_H
|
|
#define AVCODEC_IDCTDSP_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "config.h"
|
|
|
|
#include "avcodec.h"
|
|
|
|
/**
|
|
* Scantable.
|
|
*/
|
|
typedef struct ScanTable {
|
|
const uint8_t *scantable;
|
|
uint8_t permutated[64];
|
|
uint8_t raster_end[64];
|
|
} ScanTable;
|
|
|
|
enum idct_permutation_type {
|
|
FF_IDCT_PERM_NONE,
|
|
FF_IDCT_PERM_LIBMPEG2,
|
|
FF_IDCT_PERM_SIMPLE,
|
|
FF_IDCT_PERM_TRANSPOSE,
|
|
FF_IDCT_PERM_PARTTRANS,
|
|
FF_IDCT_PERM_SSE2,
|
|
};
|
|
|
|
void ff_init_scantable(uint8_t *permutation, ScanTable *st,
|
|
const uint8_t *src_scantable);
|
|
void ff_init_scantable_permutation(uint8_t *idct_permutation,
|
|
enum idct_permutation_type perm_type);
|
|
int ff_init_scantable_permutation_x86(uint8_t *idct_permutation,
|
|
enum idct_permutation_type perm_type);
|
|
|
|
typedef struct IDCTDSPContext {
|
|
/* pixel ops : interface with DCT */
|
|
void (*put_pixels_clamped)(const int16_t *block /* align 16 */,
|
|
uint8_t *av_restrict pixels /* align 8 */,
|
|
ptrdiff_t line_size);
|
|
void (*put_signed_pixels_clamped)(const int16_t *block /* align 16 */,
|
|
uint8_t *av_restrict pixels /* align 8 */,
|
|
ptrdiff_t line_size);
|
|
void (*add_pixels_clamped)(const int16_t *block /* align 16 */,
|
|
uint8_t *av_restrict pixels /* align 8 */,
|
|
ptrdiff_t line_size);
|
|
|
|
void (*idct)(int16_t *block /* align 16 */);
|
|
|
|
/**
|
|
* block -> idct -> clip to unsigned 8 bit -> dest.
|
|
* (-1392, 0, 0, ...) -> idct -> (-174, -174, ...) -> put -> (0, 0, ...)
|
|
* @param line_size size in bytes of a horizontal line of dest
|
|
*/
|
|
void (*idct_put)(uint8_t *dest /* align 8 */,
|
|
ptrdiff_t line_size, int16_t *block /* align 16 */);
|
|
|
|
/**
|
|
* block -> idct -> add dest -> clip to unsigned 8 bit -> dest.
|
|
* @param line_size size in bytes of a horizontal line of dest
|
|
*/
|
|
void (*idct_add)(uint8_t *dest /* align 8 */,
|
|
ptrdiff_t line_size, int16_t *block /* align 16 */);
|
|
|
|
/**
|
|
* IDCT input permutation.
|
|
* Several optimized IDCTs need a permutated input (relative to the
|
|
* normal order of the reference IDCT).
|
|
* This permutation must be performed before the idct_put/add.
|
|
* Note, normally this can be merged with the zigzag/alternate scan<br>
|
|
* An example to avoid confusion:
|
|
* - (->decode coeffs -> zigzag reorder -> dequant -> reference IDCT -> ...)
|
|
* - (x -> reference DCT -> reference IDCT -> x)
|
|
* - (x -> reference DCT -> simple_mmx_perm = idct_permutation
|
|
* -> simple_idct_mmx -> x)
|
|
* - (-> decode coeffs -> zigzag reorder -> simple_mmx_perm -> dequant
|
|
* -> simple_idct_mmx -> ...)
|
|
*/
|
|
uint8_t idct_permutation[64];
|
|
enum idct_permutation_type perm_type;
|
|
|
|
int mpeg4_studio_profile;
|
|
} IDCTDSPContext;
|
|
|
|
void ff_put_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels,
|
|
ptrdiff_t line_size);
|
|
void ff_add_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels,
|
|
ptrdiff_t line_size);
|
|
|
|
void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx);
|
|
|
|
void ff_idctdsp_init_aarch64(IDCTDSPContext *c, AVCodecContext *avctx,
|
|
unsigned high_bit_depth);
|
|
void ff_idctdsp_init_alpha(IDCTDSPContext *c, AVCodecContext *avctx,
|
|
unsigned high_bit_depth);
|
|
void ff_idctdsp_init_arm(IDCTDSPContext *c, AVCodecContext *avctx,
|
|
unsigned high_bit_depth);
|
|
void ff_idctdsp_init_ppc(IDCTDSPContext *c, AVCodecContext *avctx,
|
|
unsigned high_bit_depth);
|
|
void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
|
|
unsigned high_bit_depth);
|
|
void ff_idctdsp_init_mips(IDCTDSPContext *c, AVCodecContext *avctx,
|
|
unsigned high_bit_depth);
|
|
|
|
#endif /* AVCODEC_IDCTDSP_H */
|