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tests/checkasm/svq1enc: Use proper range for input
ssd_int8_vs_int16 is only called from encode_block() in svq1enc.c; it calls it in stages: At stage 0, the int16_t array contains the difference of two uint16_t. At each of the following stages, the int16_t array is filled by subtracting an int8_t from the current stage's int16_t array. The maximum stage is five, so the int16_t are in the range (-255 - 5 * 127)..(255 + 5 * 128). This commit modifies the checkasm test to only use values from this range, fixing (undefined) integer overflow in the test. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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@ -18,7 +18,6 @@
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "libavutil/mem.h"
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#include "libavutil/mem_internal.h"
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#include "libavcodec/svq1encdsp.h"
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@ -26,11 +25,13 @@
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#include "checkasm.h"
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#define BUF_SIZE 1024
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#define MIN_VAL (-255 - 5 * 127)
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#define MAX_VAL ( 255 + 5 * 128)
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#define randomize(buf, len) \
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do { \
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for (int i = 0; i < len; i++) \
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buf[i] = ((rnd() % 65281) - 32641); \
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buf[i] = ((rnd() % (MAX_VAL - MIN_VAL + 1)) + MIN_VAL); \
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} while (0)
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static void test_ssd_int8_vs_int16(SVQ1EncDSPContext *s) {
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