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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_MP_IMAGE_H
#define MPLAYER_MP_IMAGE_H
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "mpvcore/mp_msg.h"
#include "csputils.h"
#include "video/img_format.h"
#define MP_PALETTE_SIZE (256 * 4)
#define MP_IMGFIELD_ORDERED 0x01
#define MP_IMGFIELD_TOP_FIRST 0x02
#define MP_IMGFIELD_REPEAT_FIRST 0x04
#define MP_IMGFIELD_TOP 0x08
#define MP_IMGFIELD_BOTTOM 0x10
#define MP_IMGFIELD_INTERLACED 0x20
// Describes image parameters that usually stay constant.
// New fields can be added in the future. Code changing the parameters should
// usually copy the whole struct, so that fields added later will be preserved.
struct mp_image_params {
enum mp_imgfmt imgfmt; // pixel format
int w, h; // image dimensions
int d_w, d_h; // define display aspect ratio (never 0/0)
enum mp_csp colorspace;
enum mp_csp_levels colorlevels;
enum mp_chroma_location chroma_location;
// The image should be converted to these levels. Unlike colorlevels, it
// does not describe the current state of the image. (Somewhat similar to
// d_w/d_h vs. w/h.)
enum mp_csp_levels outputlevels;
};
/* Memory management:
* - mp_image is a light-weight reference to the actual image data (pixels).
* The actual image data is reference counted and can outlive mp_image
* allocations. mp_image references can be created with mp_image_new_ref()
* and free'd with talloc_free() (the helpers mp_image_setrefp() and
* mp_image_unrefp() can also be used). The actual image data is free'd when
* the last mp_image reference to it is free'd.
* - Each mp_image has a clear owner. The owner can do anything with it, such
* as changing mp_image fields. Instead of making ownership ambiguous by
* sharing a mp_image reference, new references should be created.
* - Write access to the actual image data is allowed only after calling
* mp_image_make_writeable(), or if mp_image_is_writeable() returns true.
* Conceptually, images can be changed by their owner only, and copy-on-write
* is used to ensure that other references do not see any changes to the
* image data. mp_image_make_writeable() will do that copy if required.
*/
typedef struct mp_image {
unsigned int flags; // same as fmt.flags
struct mp_imgfmt_desc fmt;
// fields redundant to fmt, for convenience or compatibility
enum mp_imgfmt imgfmt;
int num_planes;
int chroma_x_shift; // horizontal
int chroma_y_shift; // vertical
int w,h; // visible dimensions
int display_w,display_h; // if set (!= 0), anamorphic size
uint8_t *planes[MP_MAX_PLANES];
int stride[MP_MAX_PLANES];
char * qscale;
int qstride;
int pict_type; // 0->unknown, 1->I, 2->P, 3->B
int fields;
int qscale_type; // 0->mpeg1/4/h263, 1->mpeg2
/* redundant */
int chroma_width;
int chroma_height;
int plane_w[MP_MAX_PLANES];
int plane_h[MP_MAX_PLANES];
enum mp_csp colorspace;
enum mp_csp_levels levels;
enum mp_chroma_location chroma_location;
/* only inside filter chain */
double pts;
/* memory management */
struct m_refcount *refcount;
/* for private use */
void* priv;
} mp_image_t;
struct mp_image *mp_image_alloc(unsigned int fmt, int w, int h);
void mp_image_copy(struct mp_image *dmpi, struct mp_image *mpi);
void mp_image_copy_attributes(struct mp_image *dmpi, struct mp_image *mpi);
struct mp_image *mp_image_new_copy(struct mp_image *img);
struct mp_image *mp_image_new_ref(struct mp_image *img);
bool mp_image_is_writeable(struct mp_image *img);
void mp_image_make_writeable(struct mp_image *img);
void mp_image_setrefp(struct mp_image **p_img, struct mp_image *new_value);
void mp_image_unrefp(struct mp_image **p_img);
void mp_image_clear(struct mp_image *mpi, int x0, int y0, int x1, int y1);
void mp_image_crop(struct mp_image *img, int x0, int y0, int x1, int y1);
void mp_image_crop_rc(struct mp_image *img, struct mp_rect rc);
void mp_image_vflip(struct mp_image *img);
void mp_image_set_size(struct mp_image *mpi, int w, int h);
void mp_image_set_display_size(struct mp_image *mpi, int dw, int dh);
void mp_image_setfmt(mp_image_t* mpi,unsigned int out_fmt);
void mp_image_steal_data(struct mp_image *dst, struct mp_image *src);
struct mp_image *mp_image_new_custom_ref(struct mp_image *img, void *arg,
void (*free)(void *arg));
struct mp_image *mp_image_new_external_ref(struct mp_image *img, void *arg,
void (*ref)(void *arg),
void (*unref)(void *arg),
bool (*is_unique)(void *arg),
void (*free)(void *arg));
struct mp_csp_details;
void mp_image_set_colorspace_details(struct mp_image *image,
struct mp_csp_details *csp);
void mp_image_params_guess_csp(struct mp_image_params *params);
bool mp_image_params_equals(const struct mp_image_params *p1,
const struct mp_image_params *p2);
void mp_image_params_from_image(struct mp_image_params *params,
const struct mp_image *image);
void mp_image_set_params(struct mp_image *image,
const struct mp_image_params *params);
void mp_image_set_attributes(struct mp_image *image,
const struct mp_image_params *params);
struct AVFrame;
void mp_image_copy_fields_from_av_frame(struct mp_image *dst,
struct AVFrame *src);
void mp_image_copy_fields_to_av_frame(struct AVFrame *dst,
struct mp_image *src);
struct mp_image *mp_image_from_av_frame(struct AVFrame *av_frame);
struct AVFrame *mp_image_to_av_frame_and_unref(struct mp_image *img);
#endif /* MPLAYER_MP_IMAGE_H */
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