aac: return meaningful errors

libavcodec/aacdec.c

@@ -497,7 +497,7 @@ static int set_default_channel_config(AVCodecContext *avctx,
         av_log(avctx, AV_LOG_ERROR,
                "invalid default channel configuration (%d)\n",
                channel_config);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     *tags = tags_per_config[channel_config];
     memcpy(layout_map, aac_channel_layout_map[channel_config - 1],
@@ -687,7 +687,7 @@ static int decode_pce(AVCodecContext *avctx, MPEG4AudioConfig *m4ac,
     comment_len = get_bits(gb, 8) * 8;
     if (get_bits_left(gb) < comment_len) {
         av_log(avctx, AV_LOG_ERROR, overread_err);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     skip_bits_long(gb, comment_len);
     return tags;
@@ -782,7 +782,7 @@ static int decode_audio_specific_config(AACContext *ac,
                                         int sync_extension)
 {
     GetBitContext gb;
-    int i;
+    int i, ret;
 
     av_dlog(avctx, "extradata size %d\n", avctx->extradata_size);
     for (i = 0; i < avctx->extradata_size; i++)
@@ -793,12 +793,12 @@ static int decode_audio_specific_config(AACContext *ac,
 
     if ((i = avpriv_mpeg4audio_get_config(m4ac, data, bit_size,
                                           sync_extension)) < 0)
-        return -1;
+        return AVERROR_INVALIDDATA;
     if (m4ac->sampling_index > 12) {
         av_log(avctx, AV_LOG_ERROR,
                "invalid sampling rate index %d\n",
                m4ac->sampling_index);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     skip_bits_long(&gb, i);
@@ -807,15 +807,16 @@ static int decode_audio_specific_config(AACContext *ac,
     case AOT_AAC_MAIN:
     case AOT_AAC_LC:
     case AOT_AAC_LTP:
-        if (decode_ga_specific_config(ac, avctx, &gb, m4ac, m4ac->chan_config))
-            return -1;
+        if ((ret = decode_ga_specific_config(ac, avctx, &gb,
+                                            m4ac, m4ac->chan_config)) < 0)
+            return ret;
         break;
     default:
         av_log(avctx, AV_LOG_ERROR,
                "Audio object type %s%d is not supported.\n",
                m4ac->sbr == 1 ? "SBR+" : "",
                m4ac->object_type);
-        return -1;
+        return AVERROR(ENOSYS);
     }
 
     av_dlog(avctx,
@@ -891,6 +892,7 @@ static void reset_predictor_group(PredictorState *ps, int group_num)
 static av_cold int aac_decode_init(AVCodecContext *avctx)
 {
     AACContext *ac = avctx->priv_data;
+    int ret;
 
     ac->avctx = avctx;
     ac->oc[1].m4ac.sample_rate = avctx->sample_rate;
@@ -898,10 +900,11 @@ static av_cold int aac_decode_init(AVCodecContext *avctx)
     avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
 
     if (avctx->extradata_size > 0) {
-        if (decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
+        if ((ret = decode_audio_specific_config(ac, ac->avctx, &ac->oc[1].m4ac,
                                                 avctx->extradata,
-                                         avctx->extradata_size * 8, 1) < 0)
-            return -1;
+                                                avctx->extradata_size * 8,
+                                                1)) < 0)
+            return ret;
     } else {
         int sr, i;
         uint8_t layout_map[MAX_ELEM_ID*4][3];
@@ -991,7 +994,7 @@ static int skip_data_stream_element(AACContext *ac, GetBitContext *gb)
 
     if (get_bits_left(gb) < 8 * count) {
         av_log(ac->avctx, AV_LOG_ERROR, overread_err);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     skip_bits_long(gb, 8 * count);
     return 0;
@@ -1007,7 +1010,7 @@ static int decode_prediction(AACContext *ac, IndividualChannelStream *ics,
             ics->predictor_reset_group > 30) {
             av_log(ac->avctx, AV_LOG_ERROR,
                    "Invalid Predictor Reset Group.\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
     }
     for (sfb = 0; sfb < FFMIN(ics->max_sfb, ff_aac_pred_sfb_max[ac->oc[1].m4ac.sampling_index]); sfb++) {
@@ -1119,20 +1122,20 @@ static int decode_band_types(AACContext *ac, enum BandType band_type[120],
             int sect_band_type = get_bits(gb, 4);
             if (sect_band_type == 12) {
                 av_log(ac->avctx, AV_LOG_ERROR, "invalid band type\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
             do {
                 sect_len_incr = get_bits(gb, bits);
                 sect_end += sect_len_incr;
                 if (get_bits_left(gb) < 0) {
                     av_log(ac->avctx, AV_LOG_ERROR, overread_err);
-                    return -1;
+                    return AVERROR_INVALIDDATA;
                 }
                 if (sect_end > ics->max_sfb) {
                     av_log(ac->avctx, AV_LOG_ERROR,
                            "Number of bands (%d) exceeds limit (%d).\n",
                            sect_end, ics->max_sfb);
-                    return -1;
+                    return AVERROR_INVALIDDATA;
                 }
             } while (sect_len_incr == (1 << bits) - 1);
             for (; k < sect_end; k++) {
@@ -1204,7 +1207,7 @@ static int decode_scalefactors(AACContext *ac, float sf[120], GetBitContext *gb,
                     if (offset[0] > 255U) {
                         av_log(ac->avctx, AV_LOG_ERROR,
                                "Scalefactor (%d) out of range.\n", offset[0]);
-                        return -1;
+                        return AVERROR_INVALIDDATA;
                     }
                     sf[idx] = -ff_aac_pow2sf_tab[offset[0] - 100 + POW_SF2_ZERO];
                 }
@@ -1263,7 +1266,7 @@ static int decode_tns(AACContext *ac, TemporalNoiseShaping *tns,
                            "TNS filter order %d is greater than maximum %d.\n",
                            tns->order[w][filt], tns_max_order);
                     tns->order[w][filt] = 0;
-                    return -1;
+                    return AVERROR_INVALIDDATA;
                 }
                 if (tns->order[w][filt]) {
                     tns->direction[w][filt] = get_bits1(gb);
@@ -1549,7 +1552,7 @@ static int decode_spectrum_and_dequant(AACContext *ac, float coef[1024],
 
                                     if (b > 8) {
                                         av_log(ac->avctx, AV_LOG_ERROR, "error in spectral data, ESC overflow\n");
-                                        return -1;
+                                        return AVERROR_INVALIDDATA;
                                     }
 
                                     SKIP_BITS(re, gb, b + 1);
@@ -1698,6 +1701,7 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
     IndividualChannelStream *ics = &sce->ics;
     float *out = sce->coeffs;
     int global_gain, pulse_present = 0;
+    int ret;
 
     /* This assignment is to silence a GCC warning about the variable being used
      * uninitialized when in fact it always is.
@@ -1711,12 +1715,12 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
             return AVERROR_INVALIDDATA;
     }
 
-    if (decode_band_types(ac, sce->band_type,
-                          sce->band_type_run_end, gb, ics) < 0)
-        return -1;
-    if (decode_scalefactors(ac, sce->sf, gb, global_gain, ics,
-                            sce->band_type, sce->band_type_run_end) < 0)
-        return -1;
+    if ((ret = decode_band_types(ac, sce->band_type,
+                                 sce->band_type_run_end, gb, ics)) < 0)
+        return ret;
+    if ((ret = decode_scalefactors(ac, sce->sf, gb, global_gain, ics,
+                                  sce->band_type, sce->band_type_run_end)) < 0)
+        return ret;
 
     pulse_present = 0;
     if (!scale_flag) {
@@ -1724,16 +1728,16 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
             if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
                 av_log(ac->avctx, AV_LOG_ERROR,
                        "Pulse tool not allowed in eight short sequence.\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
             if (decode_pulses(&pulse, gb, ics->swb_offset, ics->num_swb)) {
                 av_log(ac->avctx, AV_LOG_ERROR,
                        "Pulse data corrupt or invalid.\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
         }
         if ((tns->present = get_bits1(gb)) && decode_tns(ac, tns, gb, ics))
-            return -1;
+            return AVERROR_INVALIDDATA;
         if (get_bits1(gb)) {
             avpriv_request_sample(ac->avctx, "SSR");
             return AVERROR_PATCHWELCOME;
@@ -1742,7 +1746,7 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
 
     if (decode_spectrum_and_dequant(ac, out, gb, sce->sf, pulse_present,
                                     &pulse, ics, sce->band_type) < 0)
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     if (ac->oc[1].m4ac.object_type == AOT_AAC_MAIN && !common_window)
         apply_prediction(ac, sce);
@@ -1844,7 +1848,7 @@ static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe)
         ms_present = get_bits(gb, 2);
         if (ms_present == 3) {
             av_log(ac->avctx, AV_LOG_ERROR, "ms_present = 3 is reserved.\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         } else if (ms_present)
             decode_mid_side_stereo(cpe, gb, ms_present);
     }