ra144enc: drop pointless "encoder" from .long_name

[ffmpeg] / libavcodec / aacdec.c

diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index 4d002edf6a1322948e330159e37ab6d2a9f15c54..ca1a8764367cc76a0f8be966b00040da173235ef 100644 (file)
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -163,6 +163,19 @@ static ChannelElement *get_che(AACContext *ac, int type, int elem_id)
     }
 }
 
+static int count_channels(enum ChannelPosition che_pos[4][MAX_ELEM_ID])
+{
+    int i, type, sum = 0;
+    for (i = 0; i < MAX_ELEM_ID; i++) {
+        for (type = 0; type < 4; type++) {
+            sum += (1 + (type == TYPE_CPE)) *
+                (che_pos[type][i] != AAC_CHANNEL_OFF &&
+                 che_pos[type][i] != AAC_CHANNEL_CC);
+        }
+    }
+    return sum;
+}
+
 /**
  * Check for the channel element in the current channel position configuration.
  * If it exists, make sure the appropriate element is allocated and map the
@@ -418,6 +431,12 @@ static int decode_ga_specific_config(AACContext *ac, AVCodecContext *avctx,
         if ((ret = set_default_channel_config(avctx, new_che_pos, channel_config)))
             return ret;
     }
+
+    if (count_channels(new_che_pos) > 1) {
+        m4ac->ps = 0;
+    } else if (m4ac->sbr == 1 && m4ac->ps == -1)
+        m4ac->ps = 1;
+
     if (ac && (ret = output_configure(ac, ac->che_pos, new_che_pos, channel_config, OC_GLOBAL_HDR)))
         return ret;
 
@@ -476,8 +495,6 @@ static int decode_audio_specific_config(AACContext *ac,
         av_log(avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", m4ac->sampling_index);
         return -1;
     }
-    if (m4ac->sbr == 1 && m4ac->ps == -1)
-        m4ac->ps = 1;
 
     skip_bits_long(&gb, i);
 
@@ -2247,12 +2264,31 @@ static int aac_decode_frame_int(AVCodecContext *avctx, void *data,
 static int aac_decode_frame(AVCodecContext *avctx, void *data,
                             int *got_frame_ptr, AVPacket *avpkt)
 {
+    AACContext *ac = avctx->priv_data;
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     GetBitContext gb;
     int buf_consumed;
     int buf_offset;
     int err;
+    int new_extradata_size;
+    const uint8_t *new_extradata = av_packet_get_side_data(avpkt,
+                                       AV_PKT_DATA_NEW_EXTRADATA,
+                                       &new_extradata_size);
+
+    if (new_extradata) {
+        av_free(avctx->extradata);
+        avctx->extradata = av_mallocz(new_extradata_size +
+                                      FF_INPUT_BUFFER_PADDING_SIZE);
+        if (!avctx->extradata)
+            return AVERROR(ENOMEM);
+        avctx->extradata_size = new_extradata_size;
+        memcpy(avctx->extradata, new_extradata, new_extradata_size);
+        if (decode_audio_specific_config(ac, ac->avctx, &ac->m4ac,
+                                         avctx->extradata,
+                                         avctx->extradata_size*8, 1) < 0)
+            return AVERROR_INVALIDDATA;
+    }
 
     init_get_bits(&gb, buf, buf_size * 8);
 
@@ -2327,6 +2363,8 @@ static int latm_decode_audio_specific_config(struct LATMContext *latmctx,
                                "config not byte aligned.\n", 1);
         return AVERROR_INVALIDDATA;
     }
+    if (asclen <= 0)
+        return AVERROR_INVALIDDATA;
     bits_consumed = decode_audio_specific_config(NULL, avctx, &m4ac,
                                          gb->buffer + (config_start_bit / 8),
                                          asclen, sync_extension);