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ffmpeg / libavfilter / libmpcodecs / vf.h @ e4852fb3

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/*
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 * This file is part of MPlayer.
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 *
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 * MPlayer is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * MPlayer is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License along
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 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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 */
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#ifndef MPLAYER_VF_H
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#define MPLAYER_VF_H
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#include "m_option.h"
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#include "mp_image.h"
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extern m_obj_settings_t* vf_settings;
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extern const m_obj_list_t vf_obj_list;
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struct vf_instance;
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struct vf_priv_s;
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typedef struct vf_info_s {
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    const char *info;
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    const char *name;
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    const char *author;
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    const char *comment;
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    int (*vf_open)(struct vf_instance *vf,char* args);
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    // Ptr to a struct dscribing the options
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    const void* opts;
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} vf_info_t;
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#define NUM_NUMBERED_MPI 50
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typedef struct vf_image_context_s {
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    mp_image_t* static_images[2];
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    mp_image_t* temp_images[1];
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    mp_image_t* export_images[1];
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    mp_image_t* numbered_images[NUM_NUMBERED_MPI];
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    int static_idx;
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} vf_image_context_t;
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typedef struct vf_format_context_t {
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    int have_configured;
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    int orig_width, orig_height, orig_fmt;
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} vf_format_context_t;
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typedef struct vf_instance {
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    const vf_info_t* info;
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    // funcs:
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    int (*config)(struct vf_instance *vf,
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        int width, int height, int d_width, int d_height,
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        unsigned int flags, unsigned int outfmt);
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    int (*control)(struct vf_instance *vf,
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        int request, void* data);
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    int (*query_format)(struct vf_instance *vf,
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        unsigned int fmt);
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    void (*get_image)(struct vf_instance *vf,
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        mp_image_t *mpi);
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    int (*put_image)(struct vf_instance *vf,
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        mp_image_t *mpi, double pts);
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    void (*start_slice)(struct vf_instance *vf,
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        mp_image_t *mpi);
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    void (*draw_slice)(struct vf_instance *vf,
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        unsigned char** src, int* stride, int w,int h, int x, int y);
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    void (*uninit)(struct vf_instance *vf);
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    int (*continue_buffered_image)(struct vf_instance *vf);
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    // caps:
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    unsigned int default_caps; // used by default query_format()
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    unsigned int default_reqs; // used by default config()
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    // data:
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    int w, h;
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    vf_image_context_t imgctx;
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    vf_format_context_t fmt;
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    struct vf_instance *next;
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    mp_image_t *dmpi;
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    struct vf_priv_s* priv;
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} vf_instance_t;
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// control codes:
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#include "mpc_info.h"
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typedef struct vf_seteq_s
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{
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    const char *item;
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    int value;
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} vf_equalizer_t;
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#define VFCTRL_QUERY_MAX_PP_LEVEL 4 /* test for postprocessing support (max level) */
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#define VFCTRL_SET_PP_LEVEL 5 /* set postprocessing level */
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#define VFCTRL_SET_EQUALIZER 6 /* set color options (brightness,contrast etc) */
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#define VFCTRL_GET_EQUALIZER 8 /* gset color options (brightness,contrast etc) */
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#define VFCTRL_DRAW_OSD 7
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#define VFCTRL_CHANGE_RECTANGLE 9 /* Change the rectangle boundaries */
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#define VFCTRL_FLIP_PAGE 10 /* Tell the vo to flip pages */
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#define VFCTRL_DUPLICATE_FRAME 11 /* For encoding - encode zero-change frame */
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#define VFCTRL_SKIP_NEXT_FRAME 12 /* For encoding - drop the next frame that passes thru */
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#define VFCTRL_FLUSH_FRAMES    13 /* For encoding - flush delayed frames */
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#define VFCTRL_SCREENSHOT      14 /* Make a screenshot */
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#define VFCTRL_INIT_EOSD       15 /* Select EOSD renderer */
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#define VFCTRL_DRAW_EOSD       16 /* Render EOSD */
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#define VFCTRL_GET_PTS         17 /* Return last pts value that reached vf_vo*/
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#define VFCTRL_SET_DEINTERLACE 18 /* Set deinterlacing status */
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#define VFCTRL_GET_DEINTERLACE 19 /* Get deinterlacing status */
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#include "vfcap.h"
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//FIXME this should be in a common header, but i dunno which
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#define MP_NOPTS_VALUE (-1LL<<63) //both int64_t and double should be able to represent this exactly
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// functions:
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void vf_mpi_clear(mp_image_t* mpi,int x0,int y0,int w,int h);
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mp_image_t* vf_get_image(vf_instance_t* vf, unsigned int outfmt, int mp_imgtype, int mp_imgflag, int w, int h);
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vf_instance_t* vf_open_plugin(const vf_info_t* const* filter_list, vf_instance_t* next, const char *name, char **args);
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vf_instance_t* vf_open_filter(vf_instance_t* next, const char *name, char **args);
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vf_instance_t* vf_add_before_vo(vf_instance_t **vf, char *name, char **args);
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vf_instance_t* vf_open_encoder(vf_instance_t* next, const char *name, char *args);
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unsigned int vf_match_csp(vf_instance_t** vfp,const unsigned int* list,unsigned int preferred);
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void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src);
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void vf_queue_frame(vf_instance_t *vf, int (*)(vf_instance_t *));
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int vf_output_queued_frame(vf_instance_t *vf);
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// default wrappers:
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int vf_next_config(struct vf_instance *vf,
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        int width, int height, int d_width, int d_height,
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        unsigned int flags, unsigned int outfmt);
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int vf_next_control(struct vf_instance *vf, int request, void* data);
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void vf_extra_flip(struct vf_instance *vf);
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int vf_next_query_format(struct vf_instance *vf, unsigned int fmt);
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int vf_next_put_image(struct vf_instance *vf,mp_image_t *mpi, double pts);
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void vf_next_draw_slice (struct vf_instance *vf, unsigned char** src, int* stride, int w,int h, int x, int y);
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vf_instance_t* append_filters(vf_instance_t* last);
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void vf_uninit_filter(vf_instance_t* vf);
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void vf_uninit_filter_chain(vf_instance_t* vf);
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int vf_config_wrapper(struct vf_instance *vf,
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                      int width, int height, int d_width, int d_height,
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                      unsigned int flags, unsigned int outfmt);
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static inline int norm_qscale(int qscale, int type)
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{
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    switch (type) {
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    case 0: // MPEG-1
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        return qscale;
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    case 1: // MPEG-2
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        return qscale >> 1;
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    case 2: // H264
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        return qscale >> 2;
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    case 3: // VP56
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        return (63 - qscale + 2) >> 2;
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    }
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    return qscale;
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}
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#endif /* MPLAYER_VF_H */