return 0;
}
-static void decode_residual_spectrum(Atrac3pChanUnitCtx *ctx,
+static void decode_residual_spectrum(ATRAC3PContext *ctx, Atrac3pChanUnitCtx *ch_unit,
float out[2][ATRAC3P_FRAME_SAMPLES],
int num_channels,
AVCodecContext *avctx)
/* calculate RNG table index for each subband */
int sb_RNG_index[ATRAC3P_SUBBANDS] = { 0 };
- if (ctx->mute_flag) {
+ if (ch_unit->mute_flag) {
for (ch = 0; ch < num_channels; ch++)
memset(out[ch], 0, ATRAC3P_FRAME_SAMPLES * sizeof(*out[ch]));
return;
}
- for (qu = 0, RNG_index = 0; qu < ctx->used_quant_units; qu++)
- RNG_index += ctx->channels[0].qu_sf_idx[qu] +
- ctx->channels[1].qu_sf_idx[qu];
+ for (qu = 0, RNG_index = 0; qu < ch_unit->used_quant_units; qu++)
+ RNG_index += ch_unit->channels[0].qu_sf_idx[qu] +
+ ch_unit->channels[1].qu_sf_idx[qu];
- for (sb = 0; sb < ctx->num_coded_subbands; sb++, RNG_index += 128)
+ for (sb = 0; sb < ch_unit->num_coded_subbands; sb++, RNG_index += 128)
sb_RNG_index[sb] = RNG_index & 0x3FC;
/* inverse quant and power compensation */
/* clear channel's residual spectrum */
memset(out[ch], 0, ATRAC3P_FRAME_SAMPLES * sizeof(*out[ch]));
- for (qu = 0; qu < ctx->used_quant_units; qu++) {
- src = &ctx->channels[ch].spectrum[ff_atrac3p_qu_to_spec_pos[qu]];
+ for (qu = 0; qu < ch_unit->used_quant_units; qu++) {
+ src = &ch_unit->channels[ch].spectrum[ff_atrac3p_qu_to_spec_pos[qu]];
dst = &out[ch][ff_atrac3p_qu_to_spec_pos[qu]];
nspeclines = ff_atrac3p_qu_to_spec_pos[qu + 1] -
ff_atrac3p_qu_to_spec_pos[qu];
- if (ctx->channels[ch].qu_wordlen[qu] > 0) {
- q = ff_atrac3p_sf_tab[ctx->channels[ch].qu_sf_idx[qu]] *
- ff_atrac3p_mant_tab[ctx->channels[ch].qu_wordlen[qu]];
+ if (ch_unit->channels[ch].qu_wordlen[qu] > 0) {
+ q = ff_atrac3p_sf_tab[ch_unit->channels[ch].qu_sf_idx[qu]] *
+ ff_atrac3p_mant_tab[ch_unit->channels[ch].qu_wordlen[qu]];
for (i = 0; i < nspeclines; i++)
dst[i] = src[i] * q;
}
}
- for (sb = 0; sb < ctx->num_coded_subbands; sb++)
- ff_atrac3p_power_compensation(ctx, ch, &out[ch][0],
+ for (sb = 0; sb < ch_unit->num_coded_subbands; sb++)
+ ff_atrac3p_power_compensation(ch_unit, ctx->fdsp, ch, &out[ch][0],
sb_RNG_index[sb], sb);
}
- if (ctx->unit_type == CH_UNIT_STEREO) {
- for (sb = 0; sb < ctx->num_coded_subbands; sb++) {
- if (ctx->swap_channels[sb]) {
+ if (ch_unit->unit_type == CH_UNIT_STEREO) {
+ for (sb = 0; sb < ch_unit->num_coded_subbands; sb++) {
+ if (ch_unit->swap_channels[sb]) {
for (i = 0; i < ATRAC3P_SUBBAND_SAMPLES; i++)
FFSWAP(float, out[0][sb * ATRAC3P_SUBBAND_SAMPLES + i],
out[1][sb * ATRAC3P_SUBBAND_SAMPLES + i]);
}
/* flip coefficients' sign if requested */
- if (ctx->negate_coeffs[sb])
+ if (ch_unit->negate_coeffs[sb])
for (i = 0; i < ATRAC3P_SUBBAND_SAMPLES; i++)
out[1][sb * ATRAC3P_SUBBAND_SAMPLES + i] = -(out[1][sb * ATRAC3P_SUBBAND_SAMPLES + i]);
}
avctx)) < 0)
return ret;
- decode_residual_spectrum(&ctx->ch_units[ch_block], ctx->samples,
+ decode_residual_spectrum(ctx, &ctx->ch_units[ch_block], ctx->samples,
channels_to_process, avctx);
reconstruct_frame(ctx, &ctx->ch_units[ch_block],
channels_to_process, avctx);