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https://github.com/FFmpeg/FFmpeg.git
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f33f728470
Vanilla clang supports altmacro since clang 5.0, and thus doesn't
require gas-preprocessor for building the arm assembly any longer.
However, the built-in assembler doesn't support .dn directives.
This readds checks that were removed in d7320ca3ed, when
the last usage of .dn directives within libav were removed.
Alternatively, the assembly could be rewritten to not use the
.dn directive, making it available to clang users.
Signed-off-by: Martin Storsjö <martin@martin.st>
187 lines
11 KiB
C
187 lines
11 KiB
C
/*
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* Copyright (C) 2013 Xiaolei Yu <dreifachstein@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "libswscale/swscale.h"
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#include "libswscale/swscale_internal.h"
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#include "libavutil/arm/cpu.h"
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#if HAVE_AS_DN_DIRECTIVE
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extern void rgbx_to_nv12_neon_32(const uint8_t *src, uint8_t *y, uint8_t *chroma,
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int width, int height,
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int y_stride, int c_stride, int src_stride,
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int32_t coeff_tbl[9]);
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extern void rgbx_to_nv12_neon_16(const uint8_t *src, uint8_t *y, uint8_t *chroma,
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int width, int height,
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int y_stride, int c_stride, int src_stride,
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int32_t coeff_tbl[9]);
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static int rgbx_to_nv12_neon_32_wrapper(SwsContext *context, const uint8_t *src[],
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int srcStride[], int srcSliceY, int srcSliceH,
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uint8_t *dst[], int dstStride[]) {
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rgbx_to_nv12_neon_32(src[0] + srcSliceY * srcStride[0],
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dst[0] + srcSliceY * dstStride[0],
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dst[1] + (srcSliceY / 2) * dstStride[1],
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context->srcW, srcSliceH,
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dstStride[0], dstStride[1], srcStride[0],
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context->input_rgb2yuv_table);
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return 0;
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}
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static int rgbx_to_nv12_neon_16_wrapper(SwsContext *context, const uint8_t *src[],
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int srcStride[], int srcSliceY, int srcSliceH,
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uint8_t *dst[], int dstStride[]) {
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rgbx_to_nv12_neon_16(src[0] + srcSliceY * srcStride[0],
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dst[0] + srcSliceY * dstStride[0],
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dst[1] + (srcSliceY / 2) * dstStride[1],
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context->srcW, srcSliceH,
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dstStride[0], dstStride[1], srcStride[0],
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context->input_rgb2yuv_table);
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return 0;
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}
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#define YUV_TO_RGB_TABLE \
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c->yuv2rgb_v2r_coeff, \
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c->yuv2rgb_u2g_coeff, \
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c->yuv2rgb_v2g_coeff, \
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c->yuv2rgb_u2b_coeff, \
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#define DECLARE_FF_YUVX_TO_RGBX_FUNCS(ifmt, ofmt) \
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int ff_##ifmt##_to_##ofmt##_neon(int w, int h, \
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uint8_t *dst, int linesize, \
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const uint8_t *srcY, int linesizeY, \
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const uint8_t *srcU, int linesizeU, \
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const uint8_t *srcV, int linesizeV, \
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const int16_t *table, \
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int y_offset, \
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int y_coeff); \
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\
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static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[], \
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int srcStride[], int srcSliceY, int srcSliceH, \
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uint8_t *dst[], int dstStride[]) { \
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const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE }; \
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\
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ff_##ifmt##_to_##ofmt##_neon(c->srcW, srcSliceH, \
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dst[0] + srcSliceY * dstStride[0], dstStride[0], \
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src[0], srcStride[0], \
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src[1], srcStride[1], \
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src[2], srcStride[2], \
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yuv2rgb_table, \
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c->yuv2rgb_y_offset >> 6, \
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c->yuv2rgb_y_coeff); \
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\
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return 0; \
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} \
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#define DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuvx) \
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DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, argb) \
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DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, rgba) \
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DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, abgr) \
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DECLARE_FF_YUVX_TO_RGBX_FUNCS(yuvx, bgra) \
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DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv420p)
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DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuv422p)
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#define DECLARE_FF_NVX_TO_RGBX_FUNCS(ifmt, ofmt) \
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int ff_##ifmt##_to_##ofmt##_neon(int w, int h, \
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uint8_t *dst, int linesize, \
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const uint8_t *srcY, int linesizeY, \
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const uint8_t *srcC, int linesizeC, \
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const int16_t *table, \
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int y_offset, \
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int y_coeff); \
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\
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static int ifmt##_to_##ofmt##_neon_wrapper(SwsContext *c, const uint8_t *src[], \
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int srcStride[], int srcSliceY, int srcSliceH, \
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uint8_t *dst[], int dstStride[]) { \
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const int16_t yuv2rgb_table[] = { YUV_TO_RGB_TABLE }; \
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\
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ff_##ifmt##_to_##ofmt##_neon(c->srcW, srcSliceH, \
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dst[0] + srcSliceY * dstStride[0], dstStride[0], \
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src[0], srcStride[0], src[1], srcStride[1], \
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yuv2rgb_table, \
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c->yuv2rgb_y_offset >> 6, \
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c->yuv2rgb_y_coeff); \
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\
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return 0; \
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} \
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#define DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nvx) \
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DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, argb) \
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DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, rgba) \
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DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, abgr) \
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DECLARE_FF_NVX_TO_RGBX_FUNCS(nvx, bgra) \
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DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv12)
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DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nv21)
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/* We need a 16 pixel width alignment. This constraint can easily be removed
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* for input reading but for the output which is 4-bytes per pixel (RGBA) the
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* assembly might be writing as much as 4*15=60 extra bytes at the end of the
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* line, which won't fit the 32-bytes buffer alignment. */
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#define SET_FF_NVX_TO_RGBX_FUNC(ifmt, IFMT, ofmt, OFMT, accurate_rnd) do { \
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if (c->srcFormat == AV_PIX_FMT_##IFMT \
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&& c->dstFormat == AV_PIX_FMT_##OFMT \
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&& !(c->srcH & 1) \
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&& !(c->srcW & 15) \
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&& !accurate_rnd) { \
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c->swscale = ifmt##_to_##ofmt##_neon_wrapper; \
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} \
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} while (0)
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#define SET_FF_NVX_TO_ALL_RGBX_FUNC(nvx, NVX, accurate_rnd) do { \
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SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, argb, ARGB, accurate_rnd); \
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SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, rgba, RGBA, accurate_rnd); \
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SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, abgr, ABGR, accurate_rnd); \
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SET_FF_NVX_TO_RGBX_FUNC(nvx, NVX, bgra, BGRA, accurate_rnd); \
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} while (0)
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static void get_unscaled_swscale_neon(SwsContext *c) {
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int accurate_rnd = c->flags & SWS_ACCURATE_RND;
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if (c->srcFormat == AV_PIX_FMT_RGBA
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&& c->dstFormat == AV_PIX_FMT_NV12
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&& (c->srcW >= 16)) {
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c->swscale = accurate_rnd ? rgbx_to_nv12_neon_32_wrapper
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: rgbx_to_nv12_neon_16_wrapper;
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}
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SET_FF_NVX_TO_ALL_RGBX_FUNC(nv12, NV12, accurate_rnd);
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SET_FF_NVX_TO_ALL_RGBX_FUNC(nv21, NV21, accurate_rnd);
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SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv420p, YUV420P, accurate_rnd);
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SET_FF_NVX_TO_ALL_RGBX_FUNC(yuv422p, YUV422P, accurate_rnd);
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}
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void ff_get_unscaled_swscale_arm(SwsContext *c)
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{
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int cpu_flags = av_get_cpu_flags();
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if (have_neon(cpu_flags))
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get_unscaled_swscale_neon(c);
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}
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#else
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void ff_get_unscaled_swscale_arm(SwsContext *c)
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{
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}
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#endif
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