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Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_neon_i8mm.c')
-rw-r--r-- | media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_neon_i8mm.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_neon_i8mm.c b/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_neon_i8mm.c new file mode 100644 index 0000000000..d7cbb09ea6 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_neon_i8mm.c @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2023 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 <assert.h> + +#include "./vpx_dsp_rtcd.h" +#include "vpx_dsp/arm/vpx_convolve8_neon.h" +#include "vpx_dsp/vpx_dsp_common.h" +#include "vpx_dsp/vpx_filter.h" +#include "vpx_ports/mem.h" + +void vpx_convolve8_neon_i8mm(const uint8_t *src, ptrdiff_t src_stride, + uint8_t *dst, ptrdiff_t dst_stride, + const InterpKernel *filter, int x0_q4, + int x_step_q4, int y0_q4, int y_step_q4, int w, + int h) { + /* Given our constraints: w <= 64, h <= 64, taps <= 8 we can reduce the + * maximum buffer size to 64 * (64 + 7). */ + uint8_t temp[64 * 71]; + + const int vert_filter_taps = vpx_get_filter_taps(filter[y0_q4]) <= 4 ? 4 : 8; + /* Account for the vertical phase needing vert_filter_taps / 2 - 1 lines prior + * and vert_filter_taps / 2 lines post. */ + const int intermediate_height = h + vert_filter_taps - 1; + const ptrdiff_t border_offset = vert_filter_taps / 2 - 1; + + assert(y_step_q4 == 16); + assert(x_step_q4 == 16); + + vpx_convolve8_2d_horiz_neon_i8mm(src - src_stride * border_offset, src_stride, + temp, w, filter, x0_q4, x_step_q4, y0_q4, + y_step_q4, w, intermediate_height); + + vpx_convolve8_vert_neon_i8mm(temp + w * border_offset, w, dst, dst_stride, + filter, x0_q4, x_step_q4, y0_q4, y_step_q4, w, + h); +} + +void vpx_convolve8_avg_neon_i8mm(const uint8_t *src, ptrdiff_t src_stride, + uint8_t *dst, ptrdiff_t dst_stride, + const InterpKernel *filter, int x0_q4, + int x_step_q4, int y0_q4, int y_step_q4, int w, + int h) { + uint8_t temp[64 * 71]; + + /* Averaging convolution always uses an 8-tap filter. */ + /* Account for the vertical phase needing 3 lines prior and 4 lines post. */ + const int intermediate_height = h + 7; + + assert(y_step_q4 == 16); + assert(x_step_q4 == 16); + + vpx_convolve8_2d_horiz_neon_i8mm(src - src_stride * 3, src_stride, temp, w, + filter, x0_q4, x_step_q4, y0_q4, y_step_q4, + w, intermediate_height); + + vpx_convolve8_avg_vert_neon_i8mm(temp + w * 3, w, dst, dst_stride, filter, + x0_q4, x_step_q4, y0_q4, y_step_q4, w, h); +} |