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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/libvpx/libvpx/vp8/common/reconintra4x4.c | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/libvpx/libvpx/vp8/common/reconintra4x4.c')
-rw-r--r-- | media/libvpx/libvpx/vp8/common/reconintra4x4.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp8/common/reconintra4x4.c b/media/libvpx/libvpx/vp8/common/reconintra4x4.c new file mode 100644 index 0000000000..be936df5e0 --- /dev/null +++ b/media/libvpx/libvpx/vp8/common/reconintra4x4.c @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2010 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include <string.h> + +#include "vpx_config.h" +#include "./vpx_dsp_rtcd.h" +#include "vp8_rtcd.h" +#include "blockd.h" +#include "reconintra4x4.h" +#include "vp8/common/common.h" +#include "vpx_ports/compiler_attributes.h" + +typedef void (*intra_pred_fn)(uint8_t *dst, ptrdiff_t stride, + const uint8_t *above, const uint8_t *left); + +static intra_pred_fn pred[10]; + +void vp8_init_intra4x4_predictors_internal(void) { + pred[B_DC_PRED] = vpx_dc_predictor_4x4; + pred[B_TM_PRED] = vpx_tm_predictor_4x4; + pred[B_VE_PRED] = vpx_ve_predictor_4x4; + pred[B_HE_PRED] = vpx_he_predictor_4x4; + pred[B_LD_PRED] = vpx_d45e_predictor_4x4; + pred[B_RD_PRED] = vpx_d135_predictor_4x4; + pred[B_VR_PRED] = vpx_d117_predictor_4x4; + pred[B_VL_PRED] = vpx_d63e_predictor_4x4; + pred[B_HD_PRED] = vpx_d153_predictor_4x4; + pred[B_HU_PRED] = vpx_d207_predictor_4x4; +} + +void vp8_intra4x4_predict(unsigned char *above, unsigned char *yleft, + int left_stride, B_PREDICTION_MODE b_mode, + unsigned char *dst, int dst_stride, + unsigned char top_left) { +/* Power PC implementation uses "vec_vsx_ld" to read 16 bytes from + Above (aka, Aboveb + 4). Play it safe by reserving enough stack + space here. Similary for "Left". */ +#if HAVE_VSX + unsigned char Aboveb[20]; +#else + unsigned char Aboveb[12]; +#endif + unsigned char *Above = Aboveb + 4; +#if HAVE_NEON + // Neon intrinsics are unable to load 32 bits, or 4 8 bit values. Instead, it + // over reads but does not use the extra 4 values. + unsigned char Left[8]; +#if VPX_WITH_ASAN + // Silence an 'uninitialized read' warning. Although uninitialized values are + // indeed read, they are not used. + vp8_zero_array(Left, 8); +#endif // VPX_WITH_ASAN +#elif HAVE_VSX + unsigned char Left[16]; +#else + unsigned char Left[4]; +#endif // HAVE_NEON + + Left[0] = yleft[0]; + Left[1] = yleft[left_stride]; + Left[2] = yleft[2 * left_stride]; + Left[3] = yleft[3 * left_stride]; + memcpy(Above, above, 8); + Above[-1] = top_left; + + pred[b_mode](dst, dst_stride, Above, Left); +} |