Merge remote-tracking branch 'qatar/master'

* qatar/master:
  rv34: error out on size changes with frame threading
  aacsbr: Add a debug check to sbr_mapping.
  aac: Reset some state variables when turning SBR off
  aac: Reset PS parameters on header decode failure.
  fate: add wmalossless test.
  aacsbr: handle m_max values smaller than 4.

Conflicts:
	libavcodec/aacsbr.c
	tests/fate/lossless-audio.mak

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 43 insertions, 15 deletions

diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c
index fc87d3dbce..79a0ca2da8 100644
--- a/libavcodec/aacsbr.c
+++ b/libavcodec/aacsbr.c
@@ -129,13 +129,24 @@ av_cold void ff_aac_sbr_init(void)
     ff_ps_init();
 }
 
+/** Places SBR in pure upsampling mode. */
+static void sbr_turnoff(SpectralBandReplication *sbr) {
+    sbr->start = 0;
+    // Init defults used in pure upsampling mode
+    sbr->kx[1] = 32; //Typo in spec, kx' inits to 32
+    sbr->m[1] = 0;
+    // Reset values for first SBR header
+    sbr->data[0].e_a[1] = sbr->data[1].e_a[1] = -1;
+    memset(&sbr->spectrum_params, -1, sizeof(SpectrumParameters));
+}
+
 av_cold void ff_aac_sbr_ctx_init(AACContext *ac, SpectralBandReplication *sbr)
 {
     float mdct_scale;
     if(sbr->mdct.mdct_bits)
         return;
-    sbr->kx[0] = sbr->kx[1] = 32; //Typo in spec, kx' inits to 32
-    sbr->data[0].e_a[1] = sbr->data[1].e_a[1] = -1;
+    sbr->kx[0] = sbr->kx[1];
+    sbr_turnoff(sbr);
     sbr->data[0].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
     sbr->data[1].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
     /* SBR requires samples to be scaled to +/-32768.0 to work correctly.
@@ -998,18 +1009,18 @@ static unsigned int read_sbr_data(AACContext *ac, SpectralBandReplication *sbr,
 
     if (id_aac == TYPE_SCE || id_aac == TYPE_CCE) {
         if (read_sbr_single_channel_element(ac, sbr, gb)) {
-            sbr->start = 0;
+            sbr_turnoff(sbr);
             return get_bits_count(gb) - cnt;
         }
     } else if (id_aac == TYPE_CPE) {
         if (read_sbr_channel_pair_element(ac, sbr, gb)) {
-            sbr->start = 0;
+            sbr_turnoff(sbr);
             return get_bits_count(gb) - cnt;
         }
     } else {
         av_log(ac->avctx, AV_LOG_ERROR,
             "Invalid bitstream - cannot apply SBR to element type %d\n", id_aac);
-        sbr->start = 0;
+        sbr_turnoff(sbr);
         return get_bits_count(gb) - cnt;
     }
     if (get_bits1(gb)) { // bs_extended_data
@@ -1041,7 +1052,7 @@ static void sbr_reset(AACContext *ac, SpectralBandReplication *sbr)
     if (err < 0) {
         av_log(ac->avctx, AV_LOG_ERROR,
                "SBR reset failed. Switching SBR to pure upsampling mode.\n");
-        sbr->start = 0;
+        sbr_turnoff(sbr);
     }
 }
 
@@ -1076,6 +1087,7 @@ int ff_decode_sbr_extension(AACContext *ac, SpectralBandReplication *sbr,
     //Save some state from the previous frame.
     sbr->kx[0] = sbr->kx[1];
     sbr->m[0] = sbr->m[1];
+    sbr->kx_and_m_pushed = 1;
 
     num_sbr_bits++;
     if (get_bits1(gb)) // bs_header_flag
@@ -1391,7 +1403,7 @@ static int sbr_x_gen(SpectralBandReplication *sbr, float X[2][38][64],
 /** High Frequency Adjustment (14496-3 sp04 p217) and Mapping
  * (14496-3 sp04 p217)
  */
-static void sbr_mapping(AACContext *ac, SpectralBandReplication *sbr,
+static int sbr_mapping(AACContext *ac, SpectralBandReplication *sbr,
                         SBRData *ch_data, int e_a[2])
 {
     int e, i, m;
@@ -1402,7 +1414,12 @@ static void sbr_mapping(AACContext *ac, SpectralBandReplication *sbr,
         uint16_t *table = ch_data->bs_freq_res[e + 1] ? sbr->f_tablehigh : sbr->f_tablelow;
         int k;
 
-        av_assert0(sbr->kx[1] <= table[0]);
+        if (sbr->kx[1] != table[0]) {
+            av_log(ac->avctx, AV_LOG_ERROR, "kx != f_table{high,low}[0]. "
+                   "Derived frequency tables were not regenerated.\n");
+            sbr_turnoff(sbr);
+            return AVERROR_BUG;
+        }
         for (i = 0; i < ilim; i++)
             for (m = table[i]; m < table[i + 1]; m++)
                 sbr->e_origmapped[e][m - sbr->kx[1]] = ch_data->env_facs[e+1][i];
@@ -1437,6 +1454,7 @@ static void sbr_mapping(AACContext *ac, SpectralBandReplication *sbr,
     }
 
     memcpy(ch_data->s_indexmapped[0], ch_data->s_indexmapped[ch_data->bs_num_env], sizeof(ch_data->s_indexmapped[0]));
+    return 0;
 }
 
 /// Estimation of current envelope (14496-3 sp04 p218)
@@ -1637,6 +1655,14 @@ void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac,
     int downsampled = ac->m4ac.ext_sample_rate < sbr->sample_rate;
     int ch;
     int nch = (id_aac == TYPE_CPE) ? 2 : 1;
+    int err;
+
+    if (!sbr->kx_and_m_pushed) {
+        sbr->kx[0] = sbr->kx[1];
+        sbr->m[0] = sbr->m[1];
+    } else {
+        sbr->kx_and_m_pushed = 0;
+    }
 
     if (sbr->start) {
         sbr_dequant(sbr, id_aac);
@@ -1647,6 +1673,7 @@ void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac,
                          (float*)sbr->qmf_filter_scratch,
                          sbr->data[ch].W);
         sbr_lf_gen(ac, sbr, sbr->X_low, sbr->data[ch].W);
+        sbr->data[ch].Ypos ^= 1;
         if (sbr->start) {
             sbr_hf_inverse_filter(&sbr->dsp, sbr->alpha0, sbr->alpha1, sbr->X_low, sbr->k[0]);
             sbr_chirp(sbr, &sbr->data[ch]);
@@ -1655,13 +1682,14 @@ void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac,
                        sbr->data[ch].bs_num_env);
 
             // hf_adj
-            sbr_mapping(ac, sbr, &sbr->data[ch], sbr->data[ch].e_a);
-            sbr_env_estimate(sbr->e_curr, sbr->X_high, sbr, &sbr->data[ch]);
-            sbr_gain_calc(ac, sbr, &sbr->data[ch], sbr->data[ch].e_a);
-            sbr->data[ch].Ypos ^= 1;
-            sbr_hf_assemble(sbr->data[ch].Y[sbr->data[ch].Ypos],
-                            sbr->X_high, sbr, &sbr->data[ch],
-                            sbr->data[ch].e_a);
+            err = sbr_mapping(ac, sbr, &sbr->data[ch], sbr->data[ch].e_a);
+            if (!err) {
+                sbr_env_estimate(sbr->e_curr, sbr->X_high, sbr, &sbr->data[ch]);
+                sbr_gain_calc(ac, sbr, &sbr->data[ch], sbr->data[ch].e_a);
+                sbr_hf_assemble(sbr->data[ch].Y[sbr->data[ch].Ypos],
+                                sbr->X_high, sbr, &sbr->data[ch],
+                                sbr->data[ch].e_a);
+            }
         }
 
         /* synthesis */