| /* |
| * Copyright (C) 2013 Xiaolei Yu <dreifachstein@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 |
| */ |
| |
| #include "config.h" |
| #include "libswscale/swscale.h" |
| #include "libswscale/swscale_internal.h" |
| #include "libavutil/arm/cpu.h" |
| |
| extern void rgbx_to_nv12_neon_32(const uint8_t *src, uint8_t *y, uint8_t *chroma, |
| int width, int height, |
| int y_stride, int c_stride, int src_stride, |
| int32_t coeff_tbl[9]); |
| |
| extern void rgbx_to_nv12_neon_16(const uint8_t *src, uint8_t *y, uint8_t *chroma, |
| int width, int height, |
| int y_stride, int c_stride, int src_stride, |
| int32_t coeff_tbl[9]); |
| |
| static int rgbx_to_nv12_neon_32_wrapper(SwsContext *context, const uint8_t *src[], |
| int srcStride[], int srcSliceY, int srcSliceH, |
| uint8_t *dst[], int dstStride[]) { |
| |
| rgbx_to_nv12_neon_32(src[0] + srcSliceY * srcStride[0], |
| dst[0] + srcSliceY * dstStride[0], |
| dst[1] + (srcSliceY / 2) * dstStride[1], |
| context->srcW, srcSliceH, |
| dstStride[0], dstStride[1], srcStride[0], |
| context->input_rgb2yuv_table); |
| |
| return 0; |
| } |
| |
| static int rgbx_to_nv12_neon_16_wrapper(SwsContext *context, const uint8_t *src[], |
| int srcStride[], int srcSliceY, int srcSliceH, |
| uint8_t *dst[], int dstStride[]) { |
| |
| rgbx_to_nv12_neon_16(src[0] + srcSliceY * srcStride[0], |
| dst[0] + srcSliceY * dstStride[0], |
| dst[1] + (srcSliceY / 2) * dstStride[1], |
| context->srcW, srcSliceH, |
| dstStride[0], dstStride[1], srcStride[0], |
| context->input_rgb2yuv_table); |
| |
| return 0; |
| } |
| |
| static void get_unscaled_swscale_neon(SwsContext *c) { |
| int accurate_rnd = c->flags & SWS_ACCURATE_RND; |
| if (c->srcFormat == AV_PIX_FMT_RGBA |
| && c->dstFormat == AV_PIX_FMT_NV12 |
| && (c->srcW >= 16)) { |
| c->swscale = accurate_rnd ? rgbx_to_nv12_neon_32_wrapper |
| : rgbx_to_nv12_neon_16_wrapper; |
| } |
| } |
| |
| void ff_get_unscaled_swscale_arm(SwsContext *c) |
| { |
| int cpu_flags = av_get_cpu_flags(); |
| if (have_neon(cpu_flags)) |
| get_unscaled_swscale_neon(c); |
| } |