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avcodec/tests/rangecoder: Test coder more completely 

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-12-19 02:40:19 +01:00
parent 1be9a28f8e
commit 0c4af1390f
1 changed files with 26 additions and 17 deletions
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43
libavcodec/tests/rangecoder.c
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@ -24,41 +24,50 @@
#include "libavcodec/rangecoder.h"
#define SIZE 10240
#define SIZE 1240
int main(void)
{
RangeCoder c;
uint8_t b[9 * SIZE];
uint8_t r[9 * SIZE];
int i;
int i, p, actual_length, version;
uint8_t state[10];
AVLFG prng;
av_lfg_init(&prng, 1);
for (version = 0; version < 2; version++) {
for (p = 0; p< 1024; p++) {
ff_init_range_encoder(&c, b, SIZE);
ff_build_rac_states(&c, (1LL << 32) / 20, 128 + 64 + 32 + 16);
ff_init_range_encoder(&c, b, SIZE);
ff_build_rac_states(&c, (1LL << 32) / 20, 128 + 64 + 32 + 16);
memset(state, 128, sizeof(state));
memset(state, 128, sizeof(state));
for (i = 0; i < SIZE; i++)
r[i] = av_lfg_get(&prng) % 7;
for (i = 0; i < SIZE; i++)
r[i] = av_lfg_get(&prng) % 7;
for (i = 0; i < SIZE; i++)
put_rac(&c, state, r[i] & 1);
for (i = 0; i < SIZE; i++)
put_rac(&c, state, r[i] & 1);
actual_length = ff_rac_terminate(&c, version);
ff_rac_terminate(&c, 0);
ff_init_range_decoder(&c, b, version ? SIZE : actual_length);
ff_init_range_decoder(&c, b, SIZE);
memset(state, 128, sizeof(state));
memset(state, 128, sizeof(state));
for (i = 0; i < SIZE; i++)
if ((r[i] & 1) != get_rac(&c, state)) {
av_log(NULL, AV_LOG_ERROR, "rac failure at %d\n", i);
return 1;
for (i = 0; i < SIZE; i++)
if ((r[i] & 1) != get_rac(&c, state)) {
av_log(NULL, AV_LOG_ERROR, "rac failure at %d pass %d version %d\n", i, p, version);
return 1;
}
if(version)
get_rac(&c, (uint8_t[]) { 129 });
if (c.bytestream - c.bytestream_start - actual_length != version) {
av_log(NULL, AV_LOG_ERROR, "rac failure at pass %d version %d\n", p, version);
return 1;
}
}
}
return 0;
}