C++ (Cpp) ff_init_range_encoder Examples

Example #1

File: rangecoder.c Project: 0myc/FFmpeg

int main(void)
{
    RangeCoder c;
    int i;
    uint8_t state[10];
    AVLFG prng;

    av_lfg_init(&prng, 1);

    ff_init_range_encoder(&c, b, SIZE);
    ff_build_rac_states(&c, (1LL << 32) / 20, 128 + 64 + 32 + 16);

    memset(state, 128, sizeof(state));

    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);

    ff_rac_terminate(&c);

    ff_init_range_decoder(&c, b, SIZE);

    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;
        }

    return 0;
}

Example #2

File: rangecoder.c Project: AnthonyNystrom/MobiVU

void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size){
    /* cast to avoid compiler warning */
    ff_init_range_encoder(c, (uint8_t *) buf, buf_size);

    c->low =(*c->bytestream++)<<8;
    c->low+= *c->bytestream++;
}

Example #3

File: rangecoder.c Project: 0Soul/FFmpeg

av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf,
                                   int buf_size)
{
    /* cast to avoid compiler warning */
    ff_init_range_encoder(c, (uint8_t *)buf, buf_size);

    c->low = bytestream_get_be16((const uint8_t **)&c->bytestream);
}

Example #4

File: rangecoder.c Project: ming-hai/libav

av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf,
                                   int buf_size)
{
    /* cast to avoid compiler warning */
    ff_init_range_encoder(c, (uint8_t *)buf, buf_size);

    c->low = AV_RB16(c->bytestream);
    c->bytestream += 2;
}

Example #5

File: rangecoder.c Project: AndyA/ffmbc

int main(void){
    RangeCoder c;
    uint8_t b[9*SIZE];
    uint8_t r[9*SIZE];
    int i;
    uint8_t state[10]= {0};
    AVLFG prng;

    av_lfg_init(&prng, 1);

    ff_init_range_encoder(&c, b, SIZE);
    ff_build_rac_states(&c, 0.05*(1LL<<32), 128+64+32+16);

    memset(state, 128, sizeof(state));

    for(i=0; i<SIZE; i++){
        r[i] = av_lfg_get(&prng) % 7;
    }

    for(i=0; i<SIZE; i++){
START_TIMER
        put_rac(&c, state, r[i]&1);
STOP_TIMER("put_rac")
    }

    ff_rac_terminate(&c);

    ff_init_range_decoder(&c, b, SIZE);

    memset(state, 128, sizeof(state));

    for(i=0; i<SIZE; i++){
START_TIMER
        if( (r[i]&1) != get_rac(&c, state) )
            av_log(NULL, AV_LOG_DEBUG, "rac failure at %d\n", i);
STOP_TIMER("get_rac")
    }

    return 0;
}

Example #6

File: rangecoder.c Project: foogywoo/drone

void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size){
    ff_init_range_encoder(c, buf, buf_size);

    c->low =(*c->bytestream++)<<8;
    c->low+= *c->bytestream++;
}