1 files changed, 174 insertions, 0 deletions
diff --git a/src/libfaad/mp4.c b/src/libfaad/mp4.c
new file mode 100644
index 000000000..d9037d7a9
--- /dev/null
+++ b/src/libfaad/mp4.c
@@ -0,0 +1,174 @@
+/*
+** FAAD - Freeware Advanced Audio Decoder
+** Copyright (C) 2002 M. Bakker
+**  
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+** 
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+** 
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software 
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** $Id: mp4.c,v 1.1 2002/07/14 23:43:01 miguelfreitas Exp $
+**/
+
+#include "common.h"
+#include "bits.h"
+#include "mp4.h"
+#include "data.h"
+#include "syntax.h"
+
+/* defines if an object type can be decoded by this library or not */
+static uint8_t ObjectTypesTable[32] = {
+    0, /* NULL */
+#ifdef MAIN_DEC
+    1, /* AAC Main */
+#else
+    0, /* AAC Main */
+#endif
+    1, /* AAC LC */
+    0, /* AAC SSR */
+#ifdef LTP_DEC
+    1, /* AAC LTP */
+#else
+    0, /* AAC LTP */
+#endif
+    0, /* Reserved */
+    0, /* AAC Scalable */
+    0, /* TwinVQ */
+    0, /* CELP */
+    0, /* HVXC */
+    0, /* Reserved */
+    0, /* Reserved */
+    0, /* TTSI */
+    0, /* Main synthetic */
+    0, /* Wavetable synthesis */
+    0, /* General MIDI */
+    0, /* Algorithmic Synthesis and Audio FX */
+
+    /* MPEG-4 Version 2 */
+#ifdef ERROR_RESILIENCE
+    1, /* ER AAC LC */
+    0, /* (Reserved) */
+#ifdef LTP_DEC
+    1, /* ER AAC LTP */
+#else
+    0, /* ER AAC LTP */
+#endif
+    0, /* ER AAC scalable */
+    0, /* ER TwinVQ */
+    0, /* ER BSAC */
+#ifdef LD_DEC
+    1, /* ER AAC LD */
+#else
+    0, /* ER AAC LD */
+#endif
+    0, /* ER CELP */
+    0, /* ER HVXC */
+    0, /* ER HILN */
+    0, /* ER Parametric */
+#else /* No ER defined */
+    0, /* ER AAC LC */
+    0, /* (Reserved) */
+    0, /* ER AAC LTP */
+    0, /* ER AAC scalable */
+    0, /* ER TwinVQ */
+    0, /* ER BSAC */
+    0, /* ER AAC LD */
+    0, /* ER CELP */
+    0, /* ER HVXC */
+    0, /* ER HILN */
+    0, /* ER Parametric */
+#endif
+    0, /* (Reserved) */
+    0, /* (Reserved) */
+    0, /* (Reserved) */
+    0  /* (Reserved) */
+};
+
+/* Table 1.6.1 */
+int8_t FAADAPI AudioSpecificConfig(uint8_t *pBuffer,
+                                   uint32_t *samplerate,
+                                   uint8_t *channels,
+                                   uint8_t *sf_index,
+                                   uint8_t *object_type,
+                                   uint8_t *aacSectionDataResilienceFlag,
+                                   uint8_t *aacScalefactorDataResilienceFlag,
+                                   uint8_t *aacSpectralDataResilienceFlag,
+                                   uint8_t *frameLengthFlag)
+{
+    bitfile ld;
+    uint8_t ObjectTypeIndex, SamplingFrequencyIndex, ChannelsConfiguration;
+
+    faad_initbits(&ld, pBuffer);
+    faad_byte_align(&ld);
+
+    ObjectTypeIndex = (uint8_t)faad_getbits(&ld, 5
+        DEBUGVAR(1,1,"parse_audio_decoder_specific_info(): ObjectTypeIndex"));
+
+    SamplingFrequencyIndex = (uint8_t)faad_getbits(&ld, 4
+        DEBUGVAR(1,2,"parse_audio_decoder_specific_info(): SamplingFrequencyIndex"));
+
+    ChannelsConfiguration = (uint8_t)faad_getbits(&ld, 4
+        DEBUGVAR(1,3,"parse_audio_decoder_specific_info(): ChannelsConfiguration"));
+
+    *samplerate = sample_rates[SamplingFrequencyIndex];
+
+    *channels = ChannelsConfiguration;
+
+    *sf_index = SamplingFrequencyIndex;
+    *object_type = ObjectTypeIndex;
+
+
+    if (ObjectTypesTable[ObjectTypeIndex] != 1)
+    {
+        return -1;
+    }
+
+    if (*samplerate == 0)
+    {
+        return -2;
+    }
+
+    if(ChannelsConfiguration > 7)
+    {
+        return -3;
+    }
+
+    /* get GASpecificConfig */
+    if (ObjectTypeIndex == 1 || ObjectTypeIndex == 2 ||
+        ObjectTypeIndex == 3 || ObjectTypeIndex == 4 ||
+        ObjectTypeIndex == 6 || ObjectTypeIndex == 7)
+    {
+        return GASpecificConfig(&ld, channels, ObjectTypeIndex,
+            aacSectionDataResilienceFlag,
+            aacScalefactorDataResilienceFlag,
+            aacSpectralDataResilienceFlag,
+            frameLengthFlag);
+#ifdef ERROR_RESILIENCE
+    } else if (ObjectTypeIndex >= ER_OBJECT_START) { /* ER */
+        uint8_t result = GASpecificConfig(&ld, channels, ObjectTypeIndex,
+            aacSectionDataResilienceFlag,
+            aacScalefactorDataResilienceFlag,
+            aacSpectralDataResilienceFlag,
+            frameLengthFlag);
+        uint8_t ep_config = (uint8_t)faad_getbits(&ld, 2
+            DEBUGVAR(1,143,"parse_audio_decoder_specific_info(): epConfig"));
+        if (ep_config != 0)
+            return -5;
+
+        return result;
+#endif
+    } else {
+        return -4;
+    }
+
+    return 0;
+}