| /* |
| * |
| * Original MPlayer filters by Richard Felker. |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU 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 "libavutil/attributes.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/mem.h" |
| #include "libavutil/x86/cpu.h" |
| #include "libavutil/x86/asm.h" |
| #include "libavfilter/vf_eq.h" |
| |
| extern void ff_process_one_line_mmxext(const uint8_t *src, uint8_t *dst, short contrast, |
| short brightness, int w); |
| extern void ff_process_one_line_sse2(const uint8_t *src, uint8_t *dst, short contrast, |
| short brightness, int w); |
| |
| #if HAVE_X86ASM |
| static void process_mmxext(EQParameters *param, uint8_t *dst, int dst_stride, |
| const uint8_t *src, int src_stride, int w, int h) |
| { |
| short contrast = (short) (param->contrast * 256 * 16); |
| short brightness = ((short) (100.0 * param->brightness + 100.0) * 511) |
| / 200 - 128 - contrast / 32; |
| |
| while (h--) { |
| ff_process_one_line_mmxext(src, dst, contrast, brightness, w); |
| src += src_stride; |
| dst += dst_stride; |
| } |
| emms_c(); |
| } |
| |
| static void process_sse2(EQParameters *param, uint8_t *dst, int dst_stride, |
| const uint8_t *src, int src_stride, int w, int h) |
| { |
| short contrast = (short) (param->contrast * 256 * 16); |
| short brightness = ((short) (100.0 * param->brightness + 100.0) * 511) |
| / 200 - 128 - contrast / 32; |
| |
| while (h--) { |
| ff_process_one_line_sse2(src, dst, contrast, brightness, w); |
| src += src_stride; |
| dst += dst_stride; |
| } |
| } |
| #endif |
| |
| av_cold void ff_eq_init_x86(EQContext *eq) |
| { |
| #if HAVE_X86ASM |
| int cpu_flags = av_get_cpu_flags(); |
| if (EXTERNAL_MMXEXT(cpu_flags)) { |
| eq->process = process_mmxext; |
| } |
| if (EXTERNAL_SSE2(cpu_flags)) { |
| eq->process = process_sse2; |
| } |
| #endif |
| } |