More mp{1,2,3} 32-point DCT transform to our common DCT framework.

[ffmpeg] / libavcodec / aacdec.c

diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index ebbc4cd205e588a66973cebb31bc8504a1cbb933..e375d1f98b79a96152a64a6a88f1833de19c756a 100644 (file)
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -67,7 +67,7 @@
  * Y (not in this code) Layer-2
  * Y (not in this code) Layer-3
  * N                    SinuSoidal Coding (Transient, Sinusoid, Noise)
- * N (planned)          Parametric Stereo
+ * Y                    Parametric Stereo
  * N                    Direct Stream Transfer
  *
  * Note: - HE AAC v1 comprises LC AAC with Spectral Band Replication.
@@ -200,7 +200,8 @@ static av_cold int che_configure(AACContext *ac,
         ff_aac_sbr_ctx_init(&ac->che[type][id]->sbr);
         if (type != TYPE_CCE) {
             ac->output_data[(*channels)++] = ac->che[type][id]->ch[0].ret;
-            if (type == TYPE_CPE) {
+            if (type == TYPE_CPE ||
+                (type == TYPE_SCE && ac->m4ac.ps == 1)) {
                 ac->output_data[(*channels)++] = ac->che[type][id]->ch[1].ret;
             }
         }
@@ -228,6 +229,7 @@ static av_cold int output_configure(AACContext *ac,
     AVCodecContext *avctx = ac->avctx;
     int i, type, channels = 0, ret;
 
+    if (new_che_pos != che_pos)
     memcpy(che_pos, new_che_pos, 4 * MAX_ELEM_ID * sizeof(new_che_pos[0][0]));
 
     if (channel_config) {
@@ -471,6 +473,8 @@ static int decode_audio_specific_config(AACContext *ac, void *data,
         av_log(ac->avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", ac->m4ac.sampling_index);
         return -1;
     }
+    if (ac->m4ac.sbr == 1 && ac->m4ac.ps == -1)
+        ac->m4ac.ps = 1;
 
     skip_bits_long(&gb, i);
 
@@ -524,10 +528,15 @@ static void reset_predictor_group(PredictorState *ps, int group_num)
         reset_predict_state(&ps[i]);
 }
 
+#define AAC_INIT_VLC_STATIC(num, size) \
+    INIT_VLC_STATIC(&vlc_spectral[num], 8, ff_aac_spectral_sizes[num], \
+         ff_aac_spectral_bits[num], sizeof( ff_aac_spectral_bits[num][0]), sizeof( ff_aac_spectral_bits[num][0]), \
+        ff_aac_spectral_codes[num], sizeof(ff_aac_spectral_codes[num][0]), sizeof(ff_aac_spectral_codes[num][0]), \
+        size);
+
 static av_cold int aac_decode_init(AVCodecContext *avctx)
 {
     AACContext *ac = avctx->priv_data;
-    int i;
 
     ac->avctx = avctx;
     ac->m4ac.sample_rate = avctx->sample_rate;
@@ -571,10 +580,7 @@ static av_cold int aac_decode_init(AVCodecContext *avctx)
         ac->sf_offset = 60;
     }
 
-#if !CONFIG_HARDCODED_TABLES
-    for (i = 0; i < 428; i++)
-        ff_aac_pow2sf_tab[i] = pow(2, (i - 200) / 4.);
-#endif /* CONFIG_HARDCODED_TABLES */
+    ff_aac_tableinit();
 
     INIT_VLC_STATIC(&vlc_scalefactors,7,FF_ARRAY_ELEMS(ff_aac_scalefactor_code),
                     ff_aac_scalefactor_bits, sizeof(ff_aac_scalefactor_bits[0]), sizeof(ff_aac_scalefactor_bits[0]),
@@ -1661,6 +1667,10 @@ static int decode_extension_payload(AACContext *ac, GetBitContext *gb, int cnt,
             av_log(ac->avctx, AV_LOG_ERROR, "Implicit SBR was found with a first occurrence after the first frame.\n");
             skip_bits_long(gb, 8 * cnt - 4);
             return res;
+        } else if (ac->m4ac.ps == -1 && ac->output_configured < OC_LOCKED && ac->avctx->channels == 1) {
+            ac->m4ac.sbr = 1;
+            ac->m4ac.ps = 1;
+            output_configure(ac, ac->che_pos, ac->che_pos, ac->m4ac.chan_config, ac->output_configured);
         } else {
             ac->m4ac.sbr = 1;
         }
@@ -1940,8 +1950,10 @@ static int parse_adts_frame_header(AACContext *ac, GetBitContext *gb)
         } else if (ac->output_configured != OC_LOCKED) {
             ac->output_configured = OC_NONE;
         }
-        if (ac->output_configured != OC_LOCKED)
+        if (ac->output_configured != OC_LOCKED) {
             ac->m4ac.sbr = -1;
+            ac->m4ac.ps  = -1;
+        }
         ac->m4ac.sample_rate     = hdr_info.sample_rate;
         ac->m4ac.sampling_index  = hdr_info.sampling_index;
         ac->m4ac.object_type     = hdr_info.object_type;
@@ -1969,7 +1981,7 @@ static int aac_decode_frame(AVCodecContext *avctx, void *data,
     enum RawDataBlockType elem_type, elem_type_prev = TYPE_END;
     int err, elem_id, data_size_tmp;
     int buf_consumed;
-    int samples = 1024, multiplier;
+    int samples = 0, multiplier;
     int buf_offset;
 
     init_get_bits(&gb, buf, buf_size * 8);
@@ -1990,9 +2002,13 @@ static int aac_decode_frame(AVCodecContext *avctx, void *data,
     while ((elem_type = get_bits(&gb, 3)) != TYPE_END) {
         elem_id = get_bits(&gb, 4);
 
-        if (elem_type < TYPE_DSE && !(che=get_che(ac, elem_type, elem_id))) {
-            av_log(ac->avctx, AV_LOG_ERROR, "channel element %d.%d is not allocated\n", elem_type, elem_id);
-            return -1;
+        if (elem_type < TYPE_DSE) {
+            if (!(che=get_che(ac, elem_type, elem_id))) {
+                av_log(ac->avctx, AV_LOG_ERROR, "channel element %d.%d is not allocated\n",
+                       elem_type, elem_id);
+                return -1;
+            }
+            samples = 1024;
         }
 
         switch (elem_type) {
@@ -2077,7 +2093,8 @@ static int aac_decode_frame(AVCodecContext *avctx, void *data,
     }
     *data_size = data_size_tmp;
 
-    ac->dsp.float_to_int16_interleave(data, (const float **)ac->output_data, samples, avctx->channels);
+    if (samples)
+        ac->dsp.float_to_int16_interleave(data, (const float **)ac->output_data, samples, avctx->channels);
 
     if (ac->output_configured)
         ac->output_configured = OC_LOCKED;