diff options
Diffstat (limited to 'libavcodec/x86/idctdsp_init.c')
| -rw-r--r-- | libavcodec/x86/idctdsp_init.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/libavcodec/x86/idctdsp_init.c b/libavcodec/x86/idctdsp_init.c new file mode 100644 index 0000000000..b2332b2d4e --- /dev/null +++ b/libavcodec/x86/idctdsp_init.c @@ -0,0 +1,112 @@ +/* + * 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 "libavutil/attributes.h" +#include "libavutil/cpu.h" +#include "libavutil/x86/cpu.h" +#include "libavcodec/avcodec.h" +#include "libavcodec/idctdsp.h" +#include "libavcodec/simple_idct.h" +#include "idct_xvid.h" +#include "idctdsp.h" + +/* Input permutation for the simple_idct_mmx */ +static const uint8_t simple_mmx_permutation[64] = { + 0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D, + 0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D, + 0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D, + 0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F, + 0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F, + 0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D, + 0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F, + 0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F, +}; + +static const uint8_t idct_sse2_row_perm[8] = { 0, 4, 1, 5, 2, 6, 3, 7 }; + +av_cold int ff_init_scantable_permutation_x86(uint8_t *idct_permutation, + int idct_permutation_type) +{ + int i; + + switch (idct_permutation_type) { + case FF_SIMPLE_IDCT_PERM: + for (i = 0; i < 64; i++) + idct_permutation[i] = simple_mmx_permutation[i]; + return 1; + case FF_SSE2_IDCT_PERM: + for (i = 0; i < 64; i++) + idct_permutation[i] = (i & 0x38) | idct_sse2_row_perm[i & 7]; + return 1; + } + + return 0; +} + +av_cold void ff_idctdsp_init_x86(IDCTDSPContext *c, AVCodecContext *avctx, + unsigned high_bit_depth) +{ + int cpu_flags = av_get_cpu_flags(); + + if (INLINE_MMX(cpu_flags)) { + c->put_pixels_clamped = ff_put_pixels_clamped_mmx; + c->add_pixels_clamped = ff_add_pixels_clamped_mmx; + + if (avctx->lowres == 0 && !high_bit_depth) { + switch (avctx->idct_algo) { + case FF_IDCT_AUTO: + case FF_IDCT_SIMPLEAUTO: + case FF_IDCT_SIMPLEMMX: + c->idct_put = ff_simple_idct_put_mmx; + c->idct_add = ff_simple_idct_add_mmx; + c->idct = ff_simple_idct_mmx; + c->idct_permutation_type = FF_SIMPLE_IDCT_PERM; + break; + case FF_IDCT_XVIDMMX: + c->idct_put = ff_idct_xvid_mmx_put; + c->idct_add = ff_idct_xvid_mmx_add; + c->idct = ff_idct_xvid_mmx; + break; + } + } + } + if (EXTERNAL_MMX(cpu_flags)) { + c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_mmx; + } + + if (INLINE_MMXEXT(cpu_flags)) { + if (!high_bit_depth && avctx->idct_algo == FF_IDCT_XVIDMMX && avctx->lowres == 0) { + c->idct_put = ff_idct_xvid_mmxext_put; + c->idct_add = ff_idct_xvid_mmxext_add; + c->idct = ff_idct_xvid_mmxext; + } + } + + if (INLINE_SSE2(cpu_flags)) { + if (!high_bit_depth && avctx->idct_algo == FF_IDCT_XVIDMMX && avctx->lowres == 0) { + c->idct_put = ff_idct_xvid_sse2_put; + c->idct_add = ff_idct_xvid_sse2_add; + c->idct = ff_idct_xvid_sse2; + c->idct_permutation_type = FF_SSE2_IDCT_PERM; + } + } + if (EXTERNAL_SSE2(cpu_flags)) { + c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_sse2; + } +} |