/*
* copyright (c) 2001 Fabrice Bellard
*
- * 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
*/
/**
- * @file mpegaudio.h
+ * @file
* mpeg audio declarations for both encoder and decoder.
*/
#ifndef AVCODEC_MPEGAUDIO_H
#define AVCODEC_MPEGAUDIO_H
+#ifndef CONFIG_FLOAT
+# define CONFIG_FLOAT 0
+#endif
+
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
+#include "dct.h"
#define CONFIG_AUDIO_NONSHORT 0
#define FIX(a) ((int)((a) * FRAC_ONE))
-#if CONFIG_MPEGAUDIO_HP && CONFIG_AUDIO_NONSHORT
+#if CONFIG_FLOAT
+typedef float OUT_INT;
+#define OUT_FMT AV_SAMPLE_FMT_FLT
+#elif CONFIG_MPEGAUDIO_HP && CONFIG_AUDIO_NONSHORT
typedef int32_t OUT_INT;
#define OUT_MAX INT32_MAX
#define OUT_MIN INT32_MIN
#define OUT_SHIFT (WFRAC_BITS + FRAC_BITS - 31)
-#define OUT_FMT SAMPLE_FMT_S32
+#define OUT_FMT AV_SAMPLE_FMT_S32
#else
typedef int16_t OUT_INT;
#define OUT_MAX INT16_MAX
#define OUT_MIN INT16_MIN
#define OUT_SHIFT (WFRAC_BITS + FRAC_BITS - 15)
-#define OUT_FMT SAMPLE_FMT_S16
+#define OUT_FMT AV_SAMPLE_FMT_S16
#endif
-#if FRAC_BITS <= 15
+#if CONFIG_FLOAT
+# define INTFLOAT float
+typedef float MPA_INT;
+#elif FRAC_BITS <= 15
+# define INTFLOAT int
typedef int16_t MPA_INT;
#else
+# define INTFLOAT int
typedef int32_t MPA_INT;
#endif
#define BACKSTEP_SIZE 512
#define EXTRABYTES 24
-struct GranuleDef;
+/* layer 3 "granule" */
+typedef struct GranuleDef {
+ uint8_t scfsi;
+ int part2_3_length;
+ int big_values;
+ int global_gain;
+ int scalefac_compress;
+ uint8_t block_type;
+ uint8_t switch_point;
+ int table_select[3];
+ int subblock_gain[3];
+ uint8_t scalefac_scale;
+ uint8_t count1table_select;
+ int region_size[3]; /* number of huffman codes in each region */
+ int preflag;
+ int short_start, long_end; /* long/short band indexes */
+ uint8_t scale_factors[40];
+ INTFLOAT sb_hybrid[SBLIMIT * 18]; /* 576 samples */
+} GranuleDef;
+
+#define MPA_DECODE_HEADER \
+ int frame_size; \
+ int error_protection; \
+ int layer; \
+ int sample_rate; \
+ int sample_rate_index; /* between 0 and 8 */ \
+ int bit_rate; \
+ int nb_channels; \
+ int mode; \
+ int mode_ext; \
+ int lsf;
+
+typedef struct MPADecodeHeader {
+ MPA_DECODE_HEADER
+} MPADecodeHeader;
typedef struct MPADecodeContext {
- DECLARE_ALIGNED_8(uint8_t, last_buf[2*BACKSTEP_SIZE + EXTRABYTES]);
+ MPA_DECODE_HEADER
+ uint8_t last_buf[2*BACKSTEP_SIZE + EXTRABYTES];
int last_buf_size;
- int frame_size;
/* next header (used in free format parsing) */
uint32_t free_format_next_header;
- int error_protection;
- int layer;
- int sample_rate;
- int sample_rate_index; /* between 0 and 8 */
- int bit_rate;
GetBitContext gb;
GetBitContext in_gb;
- int nb_channels;
- int mode;
- int mode_ext;
- int lsf;
- DECLARE_ALIGNED_16(MPA_INT, synth_buf[MPA_MAX_CHANNELS][512 * 2]);
+ DECLARE_ALIGNED(16, MPA_INT, synth_buf)[MPA_MAX_CHANNELS][512 * 2];
int synth_buf_offset[MPA_MAX_CHANNELS];
- DECLARE_ALIGNED_16(int32_t, sb_samples[MPA_MAX_CHANNELS][36][SBLIMIT]);
- int32_t mdct_buf[MPA_MAX_CHANNELS][SBLIMIT * 18]; /* previous samples, for layer 3 MDCT */
+ DECLARE_ALIGNED(16, INTFLOAT, sb_samples)[MPA_MAX_CHANNELS][36][SBLIMIT];
+ INTFLOAT mdct_buf[MPA_MAX_CHANNELS][SBLIMIT * 18]; /* previous samples, for layer 3 MDCT */
+ GranuleDef granules[2][2]; /* Used in Layer 3 */
#ifdef DEBUG
int frame_count;
#endif
- void (*compute_antialias)(struct MPADecodeContext *s, struct GranuleDef *g);
int adu_mode; ///< 0 for standard mp3, 1 for adu formatted mp3
int dither_state;
int error_recognition;
AVCodecContext* avctx;
+#if CONFIG_FLOAT
+ DCTContext dct;
+#endif
+ void (*apply_window_mp3)(MPA_INT *synth_buf, MPA_INT *window,
+ int *dither_state, OUT_INT *samples, int incr);
} MPADecodeContext;
/* layer 3 huffman tables */
int ff_mpa_l2_select_table(int bitrate, int nb_channels, int freq, int lsf);
int ff_mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_rate, int *channels, int *frame_size, int *bitrate);
+extern MPA_INT ff_mpa_synth_window[];
void ff_mpa_synth_init(MPA_INT *window);
void ff_mpa_synth_filter(MPA_INT *synth_buf_ptr, int *synth_buf_offset,
MPA_INT *window, int *dither_state,
OUT_INT *samples, int incr,
- int32_t sb_samples[SBLIMIT]);
+ INTFLOAT sb_samples[SBLIMIT]);
+
+void ff_mpa_synth_init_float(MPA_INT *window);
+void ff_mpa_synth_filter_float(MPADecodeContext *s,
+ MPA_INT *synth_buf_ptr, int *synth_buf_offset,
+ MPA_INT *window, int *dither_state,
+ OUT_INT *samples, int incr,
+ INTFLOAT sb_samples[SBLIMIT]);
+
+void ff_mpegaudiodec_init_mmx(MPADecodeContext *s);
+void ff_mpegaudiodec_init_altivec(MPADecodeContext *s);
/* fast header check for resync */
static inline int ff_mpa_check_header(uint32_t header){
projects / ffmpeg / blobdiff