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/*
* 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 <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/aarch64/cpu.h"
#include "libavutil/intreadwrite.h"
#include "libavcodec/vc1dsp.h"
#include "config.h"
void ff_vc1_inv_trans_8x8_neon(int16_t *block);
void ff_vc1_inv_trans_8x4_neon(uint8_t *dest, ptrdiff_t stride, int16_t *block);
void ff_vc1_inv_trans_4x8_neon(uint8_t *dest, ptrdiff_t stride, int16_t *block);
void ff_vc1_inv_trans_4x4_neon(uint8_t *dest, ptrdiff_t stride, int16_t *block);
void ff_vc1_inv_trans_8x8_dc_neon(uint8_t *dest, ptrdiff_t stride, int16_t *block);
void ff_vc1_inv_trans_8x4_dc_neon(uint8_t *dest, ptrdiff_t stride, int16_t *block);
void ff_vc1_inv_trans_4x8_dc_neon(uint8_t *dest, ptrdiff_t stride, int16_t *block);
void ff_vc1_inv_trans_4x4_dc_neon(uint8_t *dest, ptrdiff_t stride, int16_t *block);
void ff_vc1_v_loop_filter4_neon(uint8_t *src, ptrdiff_t stride, int pq);
void ff_vc1_h_loop_filter4_neon(uint8_t *src, ptrdiff_t stride, int pq);
void ff_vc1_v_loop_filter8_neon(uint8_t *src, ptrdiff_t stride, int pq);
void ff_vc1_h_loop_filter8_neon(uint8_t *src, ptrdiff_t stride, int pq);
void ff_vc1_v_loop_filter16_neon(uint8_t *src, ptrdiff_t stride, int pq);
void ff_vc1_h_loop_filter16_neon(uint8_t *src, ptrdiff_t stride, int pq);
void ff_put_vc1_chroma_mc8_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride,
int h, int x, int y);
void ff_avg_vc1_chroma_mc8_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride,
int h, int x, int y);
void ff_put_vc1_chroma_mc4_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride,
int h, int x, int y);
void ff_avg_vc1_chroma_mc4_neon(uint8_t *dst, const uint8_t *src, ptrdiff_t stride,
int h, int x, int y);
int ff_vc1_unescape_buffer_helper_neon(const uint8_t *src, int size, uint8_t *dst);
static int vc1_unescape_buffer_neon(const uint8_t *src, int size, uint8_t *dst)
{
/* Dealing with starting and stopping, and removing escape bytes, are
* comparatively less time-sensitive, so are more clearly expressed using
* a C wrapper around the assembly inner loop. Note that we assume a
* little-endian machine that supports unaligned loads. */
int dsize = 0;
while (size >= 4)
{
int found = 0;
while (!found && (((uintptr_t) dst) & 7) && size >= 4)
{
found = (AV_RL32(src) &~ 0x03000000) == 0x00030000;
if (!found)
{
*dst++ = *src++;
--size;
++dsize;
}
}
if (!found)
{
int skip = size - ff_vc1_unescape_buffer_helper_neon(src, size, dst);
dst += skip;
src += skip;
size -= skip;
dsize += skip;
while (!found && size >= 4)
{
found = (AV_RL32(src) &~ 0x03000000) == 0x00030000;
if (!found)
{
*dst++ = *src++;
--size;
++dsize;
}
}
}
if (found)
{
*dst++ = *src++;
*dst++ = *src++;
++src;
size -= 3;
dsize += 2;
}
}
while (size > 0)
{
*dst++ = *src++;
--size;
++dsize;
}
return dsize;
}
av_cold void ff_vc1dsp_init_aarch64(VC1DSPContext *dsp)
{
int cpu_flags = av_get_cpu_flags();
if (have_neon(cpu_flags)) {
dsp->vc1_inv_trans_8x8 = ff_vc1_inv_trans_8x8_neon;
dsp->vc1_inv_trans_8x4 = ff_vc1_inv_trans_8x4_neon;
dsp->vc1_inv_trans_4x8 = ff_vc1_inv_trans_4x8_neon;
dsp->vc1_inv_trans_4x4 = ff_vc1_inv_trans_4x4_neon;
dsp->vc1_inv_trans_8x8_dc = ff_vc1_inv_trans_8x8_dc_neon;
dsp->vc1_inv_trans_8x4_dc = ff_vc1_inv_trans_8x4_dc_neon;
dsp->vc1_inv_trans_4x8_dc = ff_vc1_inv_trans_4x8_dc_neon;
dsp->vc1_inv_trans_4x4_dc = ff_vc1_inv_trans_4x4_dc_neon;
dsp->vc1_v_loop_filter4 = ff_vc1_v_loop_filter4_neon;
dsp->vc1_h_loop_filter4 = ff_vc1_h_loop_filter4_neon;
dsp->vc1_v_loop_filter8 = ff_vc1_v_loop_filter8_neon;
dsp->vc1_h_loop_filter8 = ff_vc1_h_loop_filter8_neon;
dsp->vc1_v_loop_filter16 = ff_vc1_v_loop_filter16_neon;
dsp->vc1_h_loop_filter16 = ff_vc1_h_loop_filter16_neon;
dsp->put_no_rnd_vc1_chroma_pixels_tab[0] = ff_put_vc1_chroma_mc8_neon;
dsp->avg_no_rnd_vc1_chroma_pixels_tab[0] = ff_avg_vc1_chroma_mc8_neon;
dsp->put_no_rnd_vc1_chroma_pixels_tab[1] = ff_put_vc1_chroma_mc4_neon;
dsp->avg_no_rnd_vc1_chroma_pixels_tab[1] = ff_avg_vc1_chroma_mc4_neon;
dsp->vc1_unescape_buffer = vc1_unescape_buffer_neon;
}
}