Function encode_slice_header

libavcodec/ffv1enc.c:1073–1105

}

static void encode_slice_header(FFV1Context *f, FFV1SliceContext *sc)
{
    RangeCoder *c = &sc->c;
    uint8_t state[CONTEXT_SIZE];
    int j;
    memset(state, 128, sizeof(state));

    put_symbol(c, state, sc->sx, 0);
    put_symbol(c, state, sc->sy, 0);
    put_symbol(c, state, 0, 0);
    put_symbol(c, state, 0, 0);
    for (j=0; j<f->plane_count; j++) {
        put_symbol(c, state, sc->plane[j].quant_table_index, 0);
        av_assert0(sc->plane[j].quant_table_index == f->context_model);
    }
    if (!(f->cur_enc_frame->flags & AV_FRAME_FLAG_INTERLACED))
        put_symbol(c, state, 3, 0);
    else
        put_symbol(c, state, 1 + !(f->cur_enc_frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST), 0);
    put_symbol(c, state, f->cur_enc_frame->sample_aspect_ratio.num, 0);
    put_symbol(c, state, f->cur_enc_frame->sample_aspect_ratio.den, 0);
    if (f->version > 3) {
        put_rac(c, state, sc->slice_coding_mode == 1);
        if (sc->slice_coding_mode == 1)
            ff_ffv1_clear_slice_state(f, sc);
        put_symbol(c, state, sc->slice_coding_mode, 0);
        if (sc->slice_coding_mode != 1 && f->colorspace == 1) {
            put_symbol(c, state, sc->slice_rct_by_coef, 0);
            put_symbol(c, state, sc->slice_rct_ry_coef, 0);
        }
        put_symbol(c, state, sc->remap, 0);
    }
}

static void choose_rct_params(const FFV1Context *f, FFV1SliceContext *sc,
                              const uint8_t *src[3], const int stride[3], int w, int h)