* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
- * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001 *
- * by the XIPHOPHORUS Company http://www.xiph.org/ *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
+ * by the Xiph.Org Foundation https://xiph.org/ *
* *
********************************************************************
function: bitrate tracking and management
- last mod: $Id: bitrate.h,v 1.2 2001/12/12 09:45:24 xiphmont Exp $
********************************************************************/
#include "os.h"
/* encode side bitrate tracking */
-#define BITTRACK_DIVISOR 16
typedef struct bitrate_manager_state {
- ogg_uint32_t *queue_binned;
- ogg_uint32_t *queue_actual;
- int queue_size;
+ int managed;
- int queue_head;
- int queue_bins;
+ long avg_reservoir;
+ long minmax_reservoir;
+ long avg_bitsper;
+ long min_bitsper;
+ long max_bitsper;
- long *avg_binacc;
- int avg_center;
- int avg_tail;
- ogg_uint32_t avg_centeracc;
- ogg_uint32_t avg_sampleacc;
- ogg_uint32_t avg_sampledesired;
- ogg_uint32_t avg_centerdesired;
-
- long *minmax_binstack;
- long *minmax_posstack;
- long *minmax_limitstack;
- long minmax_stackptr;
-
- long minmax_acctotal;
- int minmax_tail;
- ogg_uint32_t minmax_sampleacc;
- ogg_uint32_t minmax_sampledesired;
-
- int next_to_flush;
- int last_to_flush;
-
+ long short_per_long;
double avgfloat;
- double avgnoise;
- long noisetrigger_postpone;
- long noisetrigger_request;
-
- /* unfortunately, we need to hold queued packet data somewhere */
- oggpack_buffer *queue_packet_buffers;
- ogg_packet *queue_packets;
+ vorbis_block *vb;
+ int choice;
} bitrate_manager_state;
typedef struct bitrate_manager_info{
- /* detailed bitrate management setup */
- double queue_avg_time;
- double queue_avg_center;
- double queue_minmax_time;
- double queue_hardmin;
- double queue_hardmax;
- double queue_avgmin;
- double queue_avgmax;
+ long avg_rate;
+ long min_rate;
+ long max_rate;
+ long reservoir_bits;
+ double reservoir_bias;
+
+ double slew_damp;
- double avgfloat_initial; /* set by mode */
- double avgfloat_minimum; /* set by mode */
- double avgfloat_downslew_max;
- double avgfloat_upslew_max;
- double avgfloat_downhyst;
- double avgfloat_uphyst;
- double avgfloat_noise_lowtrigger;
- double avgfloat_noise_hightrigger;
- double avgfloat_noise_minval;
- double avgfloat_noise_maxval;
} bitrate_manager_info;
extern void vorbis_bitrate_init(vorbis_info *vi,bitrate_manager_state *bs);
extern void vorbis_bitrate_clear(bitrate_manager_state *bs);
extern int vorbis_bitrate_managed(vorbis_block *vb);
-extern int vorbis_bitrate_maxmarkers(void);
extern int vorbis_bitrate_addblock(vorbis_block *vb);
extern int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd, ogg_packet *op);