vpx_encoder.h

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/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */


#ifdef __cplusplus
extern "C" {
#endif

#ifndef VPX_ENCODER_H
#define VPX_ENCODER_H
#include "vpx_codec.h"

#define VPX_TS_MAX_PERIODICITY 16

#define VPX_TS_MAX_LAYERS       5

#define MAX_PERIODICITY VPX_TS_MAX_PERIODICITY

#define MAX_LAYERS      VPX_TS_MAX_LAYERS

#define VPX_ENCODER_ABI_VERSION (3 + VPX_CODEC_ABI_VERSION) 
#define VPX_CODEC_CAP_PSNR  0x10000 
#define VPX_CODEC_CAP_OUTPUT_PARTITION  0x20000


#define VPX_CODEC_USE_PSNR  0x10000 
#define VPX_CODEC_USE_OUTPUT_PARTITION  0x20000 
  typedef struct vpx_fixed_buf {
    void          *buf; 
    size_t         sz;  
  } vpx_fixed_buf_t; 
  typedef int64_t vpx_codec_pts_t;


  typedef uint32_t vpx_codec_frame_flags_t;
#define VPX_FRAME_IS_KEY       0x1 
#define VPX_FRAME_IS_DROPPABLE 0x2 
#define VPX_FRAME_IS_INVISIBLE 0x4 
#define VPX_FRAME_IS_FRAGMENT  0x8 
  typedef uint32_t vpx_codec_er_flags_t;
#define VPX_ERROR_RESILIENT_DEFAULT     0x1 
#define VPX_ERROR_RESILIENT_PARTITIONS  0x2 
  enum vpx_codec_cx_pkt_kind {
    VPX_CODEC_CX_FRAME_PKT,    
    VPX_CODEC_STATS_PKT,       
    VPX_CODEC_PSNR_PKT,        
    VPX_CODEC_CUSTOM_PKT = 256 
  };


  typedef struct vpx_codec_cx_pkt {
    enum vpx_codec_cx_pkt_kind  kind; 
    union {
      struct {
        void                    *buf;      
        size_t                   sz;       
        vpx_codec_pts_t          pts;      
        unsigned long            duration; 
        vpx_codec_frame_flags_t  flags;    
        int                      partition_id; 
      } frame;  
      struct vpx_fixed_buf twopass_stats;  
      struct vpx_psnr_pkt {
        unsigned int samples[4];  
        uint64_t     sse[4];      
        double       psnr[4];     
      } psnr;                       
      struct vpx_fixed_buf raw;     
      /* This packet size is fixed to allow codecs to extend this
       * interface without having to manage storage for raw packets,
       * i.e., if it's smaller than 128 bytes, you can store in the
       * packet list directly.
       */
      char pad[128 - sizeof(enum vpx_codec_cx_pkt_kind)]; 
    } data; 
  } vpx_codec_cx_pkt_t; 
  typedef struct vpx_rational {
    int num; 
    int den; 
  } vpx_rational_t; 
  enum vpx_enc_pass {
    VPX_RC_ONE_PASS,   
    VPX_RC_FIRST_PASS, 
    VPX_RC_LAST_PASS   
  };


  enum vpx_rc_mode {
    VPX_VBR, 
    VPX_CBR,  
    VPX_CQ   
  };


  enum vpx_kf_mode {
    VPX_KF_FIXED, 
    VPX_KF_AUTO,  
    VPX_KF_DISABLED = 0 
  };


  typedef long vpx_enc_frame_flags_t;
#define VPX_EFLAG_FORCE_KF (1<<0)  
  typedef struct vpx_codec_enc_cfg {
    /*
     * generic settings (g)
     */

    unsigned int           g_usage;


    unsigned int           g_threads;


    unsigned int           g_profile;  
    unsigned int           g_w;


    unsigned int           g_h;


    struct vpx_rational    g_timebase;


    vpx_codec_er_flags_t   g_error_resilient;


    enum vpx_enc_pass      g_pass;


    unsigned int           g_lag_in_frames;


    /*
     * rate control settings (rc)
     */

    unsigned int           rc_dropframe_thresh;


    unsigned int           rc_resize_allowed;


    unsigned int           rc_resize_up_thresh;


    unsigned int           rc_resize_down_thresh;


    enum vpx_rc_mode       rc_end_usage;


    struct vpx_fixed_buf   rc_twopass_stats_in;


    unsigned int           rc_target_bitrate;


    /*
     * quantizer settings
     */


    unsigned int           rc_min_quantizer;


    unsigned int           rc_max_quantizer;


    /*
     * bitrate tolerance
     */


    unsigned int           rc_undershoot_pct;


    unsigned int           rc_overshoot_pct;


    /*
     * decoder buffer model parameters
     */


    unsigned int           rc_buf_sz;


    unsigned int           rc_buf_initial_sz;


    unsigned int           rc_buf_optimal_sz;


    /*
     * 2 pass rate control parameters
     */


    unsigned int           rc_2pass_vbr_bias_pct;       
    unsigned int           rc_2pass_vbr_minsection_pct;


    unsigned int           rc_2pass_vbr_maxsection_pct;


    /*
     * keyframing settings (kf)
     */

    enum vpx_kf_mode       kf_mode;


    unsigned int           kf_min_dist;


    unsigned int           kf_max_dist;

    /*
     * Temporal scalability settings (ts)
     */

    unsigned int           ts_number_layers;

    unsigned int           ts_target_bitrate[VPX_TS_MAX_LAYERS];

    unsigned int           ts_rate_decimator[VPX_TS_MAX_LAYERS];

    unsigned int           ts_periodicity;

    unsigned int           ts_layer_id[VPX_TS_MAX_PERIODICITY];
  } vpx_codec_enc_cfg_t; 
  vpx_codec_err_t vpx_codec_enc_init_ver(vpx_codec_ctx_t      *ctx,
                                         vpx_codec_iface_t    *iface,
                                         vpx_codec_enc_cfg_t  *cfg,
                                         vpx_codec_flags_t     flags,
                                         int                   ver);


#define vpx_codec_enc_init(ctx, iface, cfg, flags) \
  vpx_codec_enc_init_ver(ctx, iface, cfg, flags, VPX_ENCODER_ABI_VERSION)


  vpx_codec_err_t vpx_codec_enc_init_multi_ver(vpx_codec_ctx_t      *ctx,
                                               vpx_codec_iface_t    *iface,
                                               vpx_codec_enc_cfg_t  *cfg,
                                               int                   num_enc,
                                               vpx_codec_flags_t     flags,
                                               vpx_rational_t       *dsf,
                                               int                   ver);


#define vpx_codec_enc_init_multi(ctx, iface, cfg, num_enc, flags, dsf) \
  vpx_codec_enc_init_multi_ver(ctx, iface, cfg, num_enc, flags, dsf, \
                               VPX_ENCODER_ABI_VERSION)


  vpx_codec_err_t  vpx_codec_enc_config_default(vpx_codec_iface_t    *iface,
                                                vpx_codec_enc_cfg_t  *cfg,
                                                unsigned int          usage);


  vpx_codec_err_t  vpx_codec_enc_config_set(vpx_codec_ctx_t            *ctx,
                                            const vpx_codec_enc_cfg_t  *cfg);


  vpx_fixed_buf_t *vpx_codec_get_global_headers(vpx_codec_ctx_t   *ctx);


#define VPX_DL_REALTIME     (1)        
#define VPX_DL_GOOD_QUALITY (1000000)  
#define VPX_DL_BEST_QUALITY (0)        
  vpx_codec_err_t  vpx_codec_encode(vpx_codec_ctx_t            *ctx,
                                    const vpx_image_t          *img,
                                    vpx_codec_pts_t             pts,
                                    unsigned long               duration,
                                    vpx_enc_frame_flags_t       flags,
                                    unsigned long               deadline);

  vpx_codec_err_t vpx_codec_set_cx_data_buf(vpx_codec_ctx_t       *ctx,
                                            const vpx_fixed_buf_t *buf,
                                            unsigned int           pad_before,
                                            unsigned int           pad_after);


  const vpx_codec_cx_pkt_t *vpx_codec_get_cx_data(vpx_codec_ctx_t   *ctx,
                                                  vpx_codec_iter_t  *iter);


  const vpx_image_t *vpx_codec_get_preview_frame(vpx_codec_ctx_t   *ctx);


#endif
#ifdef __cplusplus
}
#endif