* AAC encoder
* Copyright (C) 2008 Konstantin Shishkov
*
- * 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
*/
#include "psymodel.h"
+typedef struct AACEncOptions {
+ int stereo_mode;
+} AACEncOptions;
+
struct AACEncContext;
-typedef struct AACCoefficientsEncoder{
+typedef struct AACCoefficientsEncoder {
void (*search_for_quantizers)(AVCodecContext *avctx, struct AACEncContext *s,
SingleChannelElement *sce, const float lambda);
void (*encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce,
void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, int size,
int scale_idx, int cb, const float lambda);
void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe, const float lambda);
-}AACCoefficientsEncoder;
+} AACCoefficientsEncoder;
extern AACCoefficientsEncoder ff_aac_coders[];
* AAC encoder context
*/
typedef struct AACEncContext {
+ AVClass *av_class;
+ AACEncOptions options; ///< encoding options
PutBitContext pb;
- MDCTContext mdct1024; ///< long (1024 samples) frame transform context
- MDCTContext mdct128; ///< short (128 samples) frame transform context
+ FFTContext mdct1024; ///< long (1024 samples) frame transform context
+ FFTContext mdct128; ///< short (128 samples) frame transform context
DSPContext dsp;
- DECLARE_ALIGNED_16(FFTSample, output[2048]); ///< temporary buffer for MDCT input coefficients
- int16_t* samples; ///< saved preprocessed input
+ float *planar_samples[6]; ///< saved preprocessed input
int samplerate_index; ///< MPEG-4 samplerate index
+ int channels; ///< channel count
+ const uint8_t *chan_map; ///< channel configuration map
ChannelElement *cpe; ///< channel elements
FFPsyContext psy;
int cur_channel;
int last_frame;
float lambda;
- DECLARE_ALIGNED_16(int, qcoefs[96][2]); ///< quantized coefficients
- DECLARE_ALIGNED_16(float, scoefs[1024]); ///< scaled coefficients
+ DECLARE_ALIGNED(16, int, qcoefs)[96]; ///< quantized coefficients
+ DECLARE_ALIGNED(32, float, scoefs)[1024]; ///< scaled coefficients
+
+ struct {
+ float *samples;
+ } buffer;
} AACEncContext;
+extern float ff_aac_pow34sf_tab[428];
+
#endif /* AVCODEC_AACENC_H */