* MPEG-4 Audio common header
* Copyright (c) 2008 Baptiste Coudurier <baptiste.coudurier@free.fr>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef FFMPEG_MPEG4AUDIO_H
-#define FFMPEG_MPEG4AUDIO_H
+#ifndef AVCODEC_MPEG4AUDIO_H
+#define AVCODEC_MPEG4AUDIO_H
#include <stdint.h>
+#include "get_bits.h"
+#include "put_bits.h"
-typedef struct {
+typedef struct MPEG4AudioConfig {
int object_type;
int sampling_index;
int sample_rate;
int chan_config;
- int sbr; //< -1 implicit, 1 presence
+ int sbr; ///< -1 implicit, 1 presence
int ext_object_type;
int ext_sampling_index;
int ext_sample_rate;
+ int ext_chan_config;
+ int channels;
+ int ps; ///< -1 implicit, 1 presence
} MPEG4AudioConfig;
-extern const int ff_mpeg4audio_sample_rates[16];
+extern av_export const int avpriv_mpeg4audio_sample_rates[16];
extern const uint8_t ff_mpeg4audio_channels[8];
+
/**
* Parse MPEG-4 systems extradata to retrieve audio configuration.
* @param[in] c MPEG4AudioConfig structure to fill.
* @param[in] buf Extradata from container.
- * @param[in] buf_size Extradata size.
+ * @param[in] bit_size Extradata size in bits.
+ * @param[in] sync_extension look for a sync extension after config if true.
* @return On error -1 is returned, on success AudioSpecificConfig bit index in extradata.
*/
-int ff_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int buf_size);
+int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf,
+ int bit_size, int sync_extension);
+
+enum AudioObjectType {
+ AOT_NULL,
+ // Support? Name
+ AOT_AAC_MAIN, ///< Y Main
+ AOT_AAC_LC, ///< Y Low Complexity
+ AOT_AAC_SSR, ///< N (code in SoC repo) Scalable Sample Rate
+ AOT_AAC_LTP, ///< Y Long Term Prediction
+ AOT_SBR, ///< Y Spectral Band Replication
+ AOT_AAC_SCALABLE, ///< N Scalable
+ AOT_TWINVQ, ///< N Twin Vector Quantizer
+ AOT_CELP, ///< N Code Excited Linear Prediction
+ AOT_HVXC, ///< N Harmonic Vector eXcitation Coding
+ AOT_TTSI = 12, ///< N Text-To-Speech Interface
+ AOT_MAINSYNTH, ///< N Main Synthesis
+ AOT_WAVESYNTH, ///< N Wavetable Synthesis
+ AOT_MIDI, ///< N General MIDI
+ AOT_SAFX, ///< N Algorithmic Synthesis and Audio Effects
+ AOT_ER_AAC_LC, ///< N Error Resilient Low Complexity
+ AOT_ER_AAC_LTP = 19, ///< N Error Resilient Long Term Prediction
+ AOT_ER_AAC_SCALABLE, ///< N Error Resilient Scalable
+ AOT_ER_TWINVQ, ///< N Error Resilient Twin Vector Quantizer
+ AOT_ER_BSAC, ///< N Error Resilient Bit-Sliced Arithmetic Coding
+ AOT_ER_AAC_LD, ///< N Error Resilient Low Delay
+ AOT_ER_CELP, ///< N Error Resilient Code Excited Linear Prediction
+ AOT_ER_HVXC, ///< N Error Resilient Harmonic Vector eXcitation Coding
+ AOT_ER_HILN, ///< N Error Resilient Harmonic and Individual Lines plus Noise
+ AOT_ER_PARAM, ///< N Error Resilient Parametric
+ AOT_SSC, ///< N SinuSoidal Coding
+ AOT_PS, ///< N Parametric Stereo
+ AOT_SURROUND, ///< N MPEG Surround
+ AOT_ESCAPE, ///< Y Escape Value
+ AOT_L1, ///< Y Layer 1
+ AOT_L2, ///< Y Layer 2
+ AOT_L3, ///< Y Layer 3
+ AOT_DST, ///< N Direct Stream Transfer
+ AOT_ALS, ///< Y Audio LosslesS
+ AOT_SLS, ///< N Scalable LosslesS
+ AOT_SLS_NON_CORE, ///< N Scalable LosslesS (non core)
+ AOT_ER_AAC_ELD, ///< N Error Resilient Enhanced Low Delay
+ AOT_SMR_SIMPLE, ///< N Symbolic Music Representation Simple
+ AOT_SMR_MAIN, ///< N Symbolic Music Representation Main
+ AOT_USAC_NOSBR, ///< N Unified Speech and Audio Coding (no SBR)
+ AOT_SAOC, ///< N Spatial Audio Object Coding
+ AOT_LD_SURROUND, ///< N Low Delay MPEG Surround
+ AOT_USAC, ///< N Unified Speech and Audio Coding
+};
+
+#define MAX_PCE_SIZE 304 ///<Maximum size of a PCE including the 3-bit ID_PCE
+ ///<marker and the comment
+
+int avpriv_copy_pce_data(PutBitContext *pb, GetBitContext *gb);
-#endif /* FFMPEG_MPEGAUDIO_H */
+#endif /* AVCODEC_MPEG4AUDIO_H */