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libswscale
aarch64
swscale_unscaled.c
Go to the documentation of this file.
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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/aarch64/cpu.h
"
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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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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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} 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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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_aarch64
(
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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}
cpu.h
cpu_flags
static atomic_int cpu_flags
Definition:
cpu.c:48
SET_FF_NVX_TO_ALL_RGBX_FUNC
#define SET_FF_NVX_TO_ALL_RGBX_FUNC(nvx, NVX, accurate_rnd)
Definition:
swscale_unscaled.c:111
config.h
swscale.h
external API header
have_neon
#define have_neon(flags)
Definition:
cpu.h:27
swscale_internal.h
ff_get_unscaled_swscale_aarch64
void ff_get_unscaled_swscale_aarch64(SwsContext *c)
Definition:
swscale_unscaled.c:127
DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS
#define DECLARE_FF_NVX_TO_ALL_RGBX_FUNCS(nvx)
Definition:
swscale_unscaled.c:89
SWS_ACCURATE_RND
#define SWS_ACCURATE_RND
Definition:
swscale.h:83
get_unscaled_swscale_neon
static void get_unscaled_swscale_neon(SwsContext *c)
Definition:
swscale_unscaled.c:118
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:89
c
static double c[64]
Definition:
vsrc_mptestsrc.c:87
SwsContext
Definition:
swscale_internal.h:284
SwsContext::flags
int flags
Flags passed by the user to select scaler algorithm, optimizations, subsampling, etc...
Definition:
swscale_internal.h:399
DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS
#define DECLARE_FF_YUVX_TO_ALL_RGBX_FUNCS(yuvx)
Definition:
swscale_unscaled.c:56
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