Function decode_blocks_ind

libavcodec/alsdec.c:1004–1037

Decodes blocks independently. */

/** Decodes blocks independently.
 */
static int decode_blocks_ind(ALSDecContext *ctx, unsigned int ra_frame,
                             unsigned int c, const unsigned int *div_blocks,
                             unsigned int *js_blocks)
{
    unsigned int b;
    ALSBlockData bd;

    memset(&bd, 0, sizeof(ALSBlockData));

    bd.ra_block         = ra_frame;
    bd.use_ltp          = ctx->use_ltp;
    bd.ltp_lag          = ctx->ltp_lag;
    bd.ltp_gain         = ctx->ltp_gain[0];
    bd.quant_cof        = ctx->quant_cof[0];
    bd.lpc_cof          = ctx->lpc_cof[0];
    bd.prev_raw_samples = ctx->prev_raw_samples;
    bd.raw_samples      = ctx->raw_samples[c];


    for (b = 0; b < ctx->num_blocks; b++) {
        bd.shift_lsbs       = 0;
        bd.block_length     = div_blocks[b];

        if (read_decode_block(ctx, &bd)) {
            // damaged block, write zero for the rest of the frame
            zero_remaining(b, ctx->num_blocks, div_blocks, bd.raw_samples);
            return -1;
        }
        bd.raw_samples += div_blocks[b];
        bd.ra_block     = 0;
    }

    return 0;
}


/** Decodes blocks dependently.