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https://gitee.com/openharmony/third_party_ffmpeg
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lavu: add CHK_OFFS as AV_CHECK_OFFSET to check struct member offsets
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@ -21,13 +21,6 @@
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#ifndef AVCODEC_ARM_ASM_OFFSETS_H
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#define AVCODEC_ARM_ASM_OFFSETS_H
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#ifndef __ASSEMBLER__
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#include <stddef.h>
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#define CHK_OFFS(s, m, o) struct check_##o { \
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int x_##o[offsetof(s, m) == o? 1: -1]; \
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}
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#endif
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/* MpegEncContext */
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#define Y_DC_SCALE 0xa8
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#define C_DC_SCALE 0xac
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@ -18,6 +18,7 @@
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/internal.h"
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#include "libavutil/arm/cpu.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/mpegvideo.h"
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@ -25,12 +26,13 @@
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#include "asm-offsets.h"
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#if HAVE_NEON
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CHK_OFFS(MpegEncContext, y_dc_scale, Y_DC_SCALE);
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CHK_OFFS(MpegEncContext, c_dc_scale, C_DC_SCALE);
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CHK_OFFS(MpegEncContext, ac_pred, AC_PRED);
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CHK_OFFS(MpegEncContext, block_last_index, BLOCK_LAST_INDEX);
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CHK_OFFS(MpegEncContext, inter_scantable.raster_end, INTER_SCANTAB_RASTER_END);
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CHK_OFFS(MpegEncContext, h263_aic, H263_AIC);
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AV_CHECK_OFFSET(MpegEncContext, y_dc_scale, Y_DC_SCALE);
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AV_CHECK_OFFSET(MpegEncContext, c_dc_scale, C_DC_SCALE);
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AV_CHECK_OFFSET(MpegEncContext, ac_pred, AC_PRED);
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AV_CHECK_OFFSET(MpegEncContext, block_last_index, BLOCK_LAST_INDEX);
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AV_CHECK_OFFSET(MpegEncContext, inter_scantable.raster_end,
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INTER_SCANTAB_RASTER_END);
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AV_CHECK_OFFSET(MpegEncContext, h263_aic, H263_AIC);
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#endif
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void ff_dct_unquantize_h263_inter_neon(MpegEncContext *s, int16_t *block,
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@ -84,6 +84,13 @@
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// to be forced to tokenize __VA_ARGS__
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#define E1(x) x
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/* Check if the hard coded offset of a struct member still matches reality.
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* Induce a compilation failure if not.
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*/
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#define AV_CHECK_OFFSET(s, m, o) struct check_##o { \
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int x_##o[offsetof(s, m) == o? 1: -1]; \
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}
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#define LOCAL_ALIGNED_A(a, t, v, s, o, ...) \
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uint8_t la_##v[sizeof(t s o) + (a)]; \
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t (*v) o = (void *)FFALIGN((uintptr_t)la_##v, a)
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