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- /*
- * 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;
- }
-
- #define YUV_TO_RGB_TABLE \
- c->yuv2rgb_v2r_coeff, \
- c->yuv2rgb_u2g_coeff, \
- c->yuv2rgb_v2g_coeff, \
- c->yuv2rgb_u2b_coeff, \
-
- #define DECLARE_FF_YUVX_TO_RGBX_FUNCS(ifmt, ofmt) \
- int ff_##ifmt##_to_##ofmt##_neon(int w, int h, \
- uint8_t *dst, int linesize, \
- const uint8_t *srcY, int linesizeY, \
- const uint8_t *srcU, int linesizeU, \
- const uint8_t *srcV, int linesizeV, \
- const int16_t *table, \
- int y_offset, \
- int y_coeff); \
- \
- static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[], \
- int srcStride[], int srcSliceY, int srcSliceH, \
- uint8_t *dst[], int dstStride[]) { \
- const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE }; \
- \
- ff_##ifmt##_to_##ofmt##_neon(c->srcW, srcSliceH, \
- dst[0] + srcSliceY * dstStride[0], dstStride[0], \
- src[0], srcStride[0], \
- src[1], srcStride[1], \
- src[2], srcStride[2], \
- yuv2rgb_table, \
- c->yuv2rgb_y_offset >> 6, \
- c->yuv2rgb_y_coeff); \
- \
- return 0; \
- } \
-
- #define DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuvx) \
- DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, argb) \
- DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, rgba) \
- DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, abgr) \
- DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, bgra) \
-
- DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv420p)
- DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv422p)
-
- #define DECLARE_FF_NVX_TO_RGBX_FUNCS(ifmt, ofmt) \
- int ff_##ifmt##_to_##ofmt##_neon(int w, int h, \
- uint8_t *dst, int linesize, \
- const uint8_t *srcY, int linesizeY, \
- const uint8_t *srcC, int linesizeC, \
- const int16_t *table, \
- int y_offset, \
- int y_coeff); \
- \
- static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[], \
- int srcStride[], int srcSliceY, int srcSliceH, \
- uint8_t *dst[], int dstStride[]) { \
- const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE }; \
- \
- ff_##ifmt##_to_##ofmt##_neon(c->srcW, srcSliceH, \
- dst[0] + srcSliceY * dstStride[0], dstStride[0], \
- src[0], srcStride[0], src[1], srcStride[1], \
- yuv2rgb_table, \
- c->yuv2rgb_y_offset >> 6, \
- c->yuv2rgb_y_coeff); \
- \
- return 0; \
- } \
-
- #define DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nvx) \
- DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, argb) \
- DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, rgba) \
- DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, abgr) \
- DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, bgra) \
-
- DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv12)
- DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv21)
-
- /* We need a 16 pixel width alignment. This constraint can easily be removed
- * for input reading but for the output which is 4-bytes per pixel (RGBA) the
- * assembly might be writing as much as 4*15=60 extra bytes at the end of the
- * line, which won't fit the 32-bytes buffer alignment. */
- #define SET_FF_NVX_TO_RGBX_FUNC(ifmt, IFMT, ofmt, OFMT, accurate_rnd) do { \
- if (c->srcFormat == AV_PIX_FMT_##IFMT \
- && c->dstFormat == AV_PIX_FMT_##OFMT \
- && !(c->srcH & 1) \
- && !(c->srcW & 15) \
- && !accurate_rnd) { \
- c->swscale = ifmt##_to_##ofmt##_neon_wrapper; \
- } \
- } while (0)
-
- #define SET_FF_NVX_TO_ALL_RGBX_FUNC(nvx, NVX, accurate_rnd) do { \
- SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, argb, ARGB, accurate_rnd); \
- SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, rgba, RGBA, accurate_rnd); \
- SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, abgr, ABGR, accurate_rnd); \
- SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, bgra, BGRA, accurate_rnd); \
- } while (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;
- }
-
- SET_FF_NVX_TO_ALL_RGBX_FUNC(nv12, NV12, accurate_rnd);
- SET_FF_NVX_TO_ALL_RGBX_FUNC(nv21, NV21, accurate_rnd);
- SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv420p, YUV420P, accurate_rnd);
- SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv422p, YUV422P, accurate_rnd);
- }
-
- 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);
- }
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