summaryrefslogtreecommitdiff
path: root/src/libffmpeg/libavcodec/armv4l/mpegvideo_armv5te.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libffmpeg/libavcodec/armv4l/mpegvideo_armv5te.c')
-rw-r--r--src/libffmpeg/libavcodec/armv4l/mpegvideo_armv5te.c213
1 files changed, 0 insertions, 213 deletions
diff --git a/src/libffmpeg/libavcodec/armv4l/mpegvideo_armv5te.c b/src/libffmpeg/libavcodec/armv4l/mpegvideo_armv5te.c
deleted file mode 100644
index a8d09b8ce..000000000
--- a/src/libffmpeg/libavcodec/armv4l/mpegvideo_armv5te.c
+++ /dev/null
@@ -1,213 +0,0 @@
-/*
- * Optimization of some functions from mpegvideo.c for armv5te
- * Copyright (c) 2007 Siarhei Siamashka <ssvb@users.sourceforge.net>
- *
- * 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
- */
-
-/*
- * Some useful links for those who may be interested in optimizing code for ARM.
- * ARM Architecture Reference Manual: http://www.arm.com/community/academy/resources.html
- * Instructions timings and optimization guide for ARM9E: http://www.arm.com/pdfs/DDI0222B_9EJS_r1p2.pdf
- */
-
-#include "../dsputil.h"
-#include "../mpegvideo.h"
-#include "../avcodec.h"
-
-
-#ifdef ENABLE_ARM_TESTS
-/**
- * h263 dequantizer supplementary function, it is performance critical and needs to
- * have optimized implementations for each architecture. Is also used as a reference
- * implementation in regression tests
- */
-static inline void dct_unquantize_h263_helper_c(DCTELEM *block, int qmul, int qadd, int count)
-{
- int i, level;
- for (i = 0; i < count; i++) {
- level = block[i];
- if (level) {
- if (level < 0) {
- level = level * qmul - qadd;
- } else {
- level = level * qmul + qadd;
- }
- block[i] = level;
- }
- }
-}
-#endif
-
-/* GCC 3.1 or higher is required to support symbolic names in assembly code */
-#if (__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1))
-
-/**
- * Special optimized version of dct_unquantize_h263_helper_c, it requires the block
- * to be at least 8 bytes aligned, and may process more elements than requested.
- * But it is guaranteed to never process more than 64 elements provided that
- * xxcount argument is <= 64, so it is safe. This macro is optimized for a common
- * distribution of values for nCoeffs (they are mostly multiple of 8 plus one or
- * two extra elements). So this macro processes data as 8 elements per loop iteration
- * and contains optional 2 elements processing in the end.
- *
- * Inner loop should take 6 cycles per element on arm926ej-s (Nokia 770)
- */
-#define dct_unquantize_h263_special_helper_armv5te(xxblock, xxqmul, xxqadd, xxcount) \
-({ DCTELEM *xblock = xxblock; \
- int xqmul = xxqmul, xqadd = xxqadd, xcount = xxcount, xtmp; \
- int xdata1, xdata2; \
-__asm__ __volatile__( \
- "subs %[count], #2 \n\t" \
- "ble 2f \n\t" \
- "ldrd r4, [%[block], #0] \n\t" \
- "1: \n\t" \
- "ldrd r6, [%[block], #8] \n\t" \
-\
- "rsbs %[data1], %[zero], r4, asr #16 \n\t" \
- "addgt %[data1], %[qadd], #0 \n\t" \
- "rsblt %[data1], %[qadd], #0 \n\t" \
- "smlatbne %[data1], r4, %[qmul], %[data1] \n\t" \
-\
- "rsbs %[data2], %[zero], r5, asr #16 \n\t" \
- "addgt %[data2], %[qadd], #0 \n\t" \
- "rsblt %[data2], %[qadd], #0 \n\t" \
- "smlatbne %[data2], r5, %[qmul], %[data2] \n\t" \
-\
- "rsbs %[tmp], %[zero], r4, asl #16 \n\t" \
- "addgt %[tmp], %[qadd], #0 \n\t" \
- "rsblt %[tmp], %[qadd], #0 \n\t" \
- "smlabbne r4, r4, %[qmul], %[tmp] \n\t" \
-\
- "rsbs %[tmp], %[zero], r5, asl #16 \n\t" \
- "addgt %[tmp], %[qadd], #0 \n\t" \
- "rsblt %[tmp], %[qadd], #0 \n\t" \
- "smlabbne r5, r5, %[qmul], %[tmp] \n\t" \
-\
- "strh r4, [%[block]], #2 \n\t" \
- "strh %[data1], [%[block]], #2 \n\t" \
- "strh r5, [%[block]], #2 \n\t" \
- "strh %[data2], [%[block]], #2 \n\t" \
-\
- "rsbs %[data1], %[zero], r6, asr #16 \n\t" \
- "addgt %[data1], %[qadd], #0 \n\t" \
- "rsblt %[data1], %[qadd], #0 \n\t" \
- "smlatbne %[data1], r6, %[qmul], %[data1] \n\t" \
-\
- "rsbs %[data2], %[zero], r7, asr #16 \n\t" \
- "addgt %[data2], %[qadd], #0 \n\t" \
- "rsblt %[data2], %[qadd], #0 \n\t" \
- "smlatbne %[data2], r7, %[qmul], %[data2] \n\t" \
-\
- "rsbs %[tmp], %[zero], r6, asl #16 \n\t" \
- "addgt %[tmp], %[qadd], #0 \n\t" \
- "rsblt %[tmp], %[qadd], #0 \n\t" \
- "smlabbne r6, r6, %[qmul], %[tmp] \n\t" \
-\
- "rsbs %[tmp], %[zero], r7, asl #16 \n\t" \
- "addgt %[tmp], %[qadd], #0 \n\t" \
- "rsblt %[tmp], %[qadd], #0 \n\t" \
- "smlabbne r7, r7, %[qmul], %[tmp] \n\t" \
-\
- "strh r6, [%[block]], #2 \n\t" \
- "strh %[data1], [%[block]], #2 \n\t" \
- "strh r7, [%[block]], #2 \n\t" \
- "strh %[data2], [%[block]], #2 \n\t" \
-\
- "subs %[count], #8 \n\t" \
- "ldrgtd r4, [%[block], #0] \n\t" /* load data early to avoid load/use pipeline stall */ \
- "bgt 1b \n\t" \
-\
- "adds %[count], #2 \n\t" \
- "ble 3f \n\t" \
- "2: \n\t" \
- "ldrsh %[data1], [%[block], #0] \n\t" \
- "ldrsh %[data2], [%[block], #2] \n\t" \
- "mov %[tmp], %[qadd] \n\t" \
- "cmp %[data1], #0 \n\t" \
- "rsblt %[tmp], %[qadd], #0 \n\t" \
- "smlabbne %[data1], %[data1], %[qmul], %[tmp] \n\t" \
- "mov %[tmp], %[qadd] \n\t" \
- "cmp %[data2], #0 \n\t" \
- "rsblt %[tmp], %[qadd], #0 \n\t" \
- "smlabbne %[data2], %[data2], %[qmul], %[tmp] \n\t" \
- "strh %[data1], [%[block]], #2 \n\t" \
- "strh %[data2], [%[block]], #2 \n\t" \
- "3: \n\t" \
- : [block] "+&r" (xblock), [count] "+&r" (xcount), [tmp] "=&r" (xtmp), \
- [data1] "=&r" (xdata1), [data2] "=&r" (xdata2) \
- : [qmul] "r" (xqmul), [qadd] "r" (xqadd), [zero] "r" (0) \
- : "r4", "r5", "r6", "r7", "cc", "memory" \
-); \
-})
-
-static void dct_unquantize_h263_intra_armv5te(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
-{
- int i, level, qmul, qadd;
- int nCoeffs;
-
- assert(s->block_last_index[n]>=0);
-
- qmul = qscale << 1;
-
- if (!s->h263_aic) {
- if (n < 4)
- level = block[0] * s->y_dc_scale;
- else
- level = block[0] * s->c_dc_scale;
- qadd = (qscale - 1) | 1;
- }else{
- qadd = 0;
- level = block[0];
- }
- if(s->ac_pred)
- nCoeffs=63;
- else
- nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
-
- dct_unquantize_h263_special_helper_armv5te(block, qmul, qadd, nCoeffs + 1);
- block[0] = level;
-}
-
-static void dct_unquantize_h263_inter_armv5te(MpegEncContext *s,
- DCTELEM *block, int n, int qscale)
-{
- int i, level, qmul, qadd;
- int nCoeffs;
-
- assert(s->block_last_index[n]>=0);
-
- qadd = (qscale - 1) | 1;
- qmul = qscale << 1;
-
- nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
-
- dct_unquantize_h263_special_helper_armv5te(block, qmul, qadd, nCoeffs + 1);
-}
-
-#define HAVE_DCT_UNQUANTIZE_H263_ARMV5TE_OPTIMIZED
-
-#endif
-
-void MPV_common_init_armv5te(MpegEncContext *s)
-{
-#ifdef HAVE_DCT_UNQUANTIZE_H263_ARMV5TE_OPTIMIZED
- s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_armv5te;
- s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_armv5te;
-#endif
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 18:06:55 +0000