mirror of
https://github.com/mpv-player/mpv
synced 2024-11-07 01:47:00 +01:00
00653a3eb0
Replace the internal pixel format stuff with code that queries the libavutil list of pixel format descriptors. Trying to map IMGFMT_IS_RGB() etc. turned out extremely hacky.
147 lines
5.6 KiB
C
147 lines
5.6 KiB
C
/*
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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_MP_IMAGE_H
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#define MPLAYER_MP_IMAGE_H
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include "core/mp_msg.h"
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#include "csputils.h"
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#include "video/img_format.h"
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// Minimum stride alignment in pixels
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#define MP_STRIDE_ALIGNMENT 32
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// set if buffer is allocated (used in destination images):
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#define MP_IMGFLAG_ALLOCATED 0x4000
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#define MP_IMGFIELD_ORDERED 0x01
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#define MP_IMGFIELD_TOP_FIRST 0x02
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#define MP_IMGFIELD_REPEAT_FIRST 0x04
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#define MP_IMGFIELD_TOP 0x08
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#define MP_IMGFIELD_BOTTOM 0x10
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#define MP_IMGFIELD_INTERLACED 0x20
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/* Memory management:
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* - mp_image is a light-weight reference to the actual image data (pixels).
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* The actual image data is reference counted and can outlive mp_image
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* allocations. mp_image references can be created with mp_image_new_ref()
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* and free'd with talloc_free() (the helpers mp_image_setrefp() and
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* mp_image_unrefp() can also be used). The actual image data is free'd when
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* the last mp_image reference to it is free'd.
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* - Each mp_image has a clear owner. The owner can do anything with it, such
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* as changing mp_image fields. Instead of making ownership ambiguous by
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* sharing a mp_image reference, new references should be created.
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* - Write access to the actual image data is allowed only after calling
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* mp_image_make_writeable(), or if mp_image_is_writeable() returns true.
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* Conceptually, images can be changed by their owner only, and copy-on-write
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* is used to ensure that other references do not see any changes to the
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* image data. mp_image_make_writeable() will do that copy if required.
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*/
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typedef struct mp_image {
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unsigned int flags;
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struct mp_imgfmt_desc fmt;
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// fields redundant to fmt, for convenience or compatibility
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unsigned char bpp; // bits/pixel. NOT depth! for RGB it will be n*8
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unsigned int imgfmt;
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int num_planes;
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int chroma_x_shift; // horizontal
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int chroma_y_shift; // vertical
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int w,h; // visible dimensions
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int display_w,display_h; // if set (!= 0), anamorphic size
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uint8_t *planes[MP_MAX_PLANES];
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int stride[MP_MAX_PLANES];
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char * qscale;
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int qstride;
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int pict_type; // 0->unknown, 1->I, 2->P, 3->B
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int fields;
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int qscale_type; // 0->mpeg1/4/h263, 1->mpeg2
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/* redundant */
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int chroma_width;
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int chroma_height;
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int plane_w[MP_MAX_PLANES];
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int plane_h[MP_MAX_PLANES];
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enum mp_csp colorspace;
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enum mp_csp_levels levels;
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/* only inside filter chain */
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double pts;
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/* memory management */
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struct m_refcount *refcount;
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/* for private use */
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void* priv;
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} mp_image_t;
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#define alloc_mpi(w, h, fmt) mp_image_alloc(fmt, w, h)
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#define free_mp_image talloc_free
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#define new_mp_image mp_image_new_empty
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#define copy_mpi mp_image_copy
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struct mp_image *mp_image_alloc(unsigned int fmt, int w, int h);
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void mp_image_copy(struct mp_image *dmpi, struct mp_image *mpi);
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void mp_image_copy_attributes(struct mp_image *dmpi, struct mp_image *mpi);
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struct mp_image *mp_image_new_copy(struct mp_image *img);
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struct mp_image *mp_image_new_ref(struct mp_image *img);
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bool mp_image_is_writeable(struct mp_image *img);
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void mp_image_make_writeable(struct mp_image *img);
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void mp_image_setrefp(struct mp_image **p_img, struct mp_image *new_value);
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void mp_image_unrefp(struct mp_image **p_img);
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void mp_image_set_size(struct mp_image *mpi, int w, int h);
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void mp_image_set_display_size(struct mp_image *mpi, int dw, int dh);
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struct mp_image *mp_image_new_empty(int w, int h);
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void mp_image_setfmt(mp_image_t* mpi,unsigned int out_fmt);
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void mp_image_alloc_planes(struct mp_image *mpi);
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void mp_image_steal_data(struct mp_image *dst, struct mp_image *src);
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struct mp_image *mp_image_new_custom_ref(struct mp_image *img, void *arg,
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void (*free)(void *arg));
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struct mp_image *mp_image_new_external_ref(struct mp_image *img, void *arg,
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void (*ref)(void *arg),
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void (*unref)(void *arg),
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bool (*is_unique)(void *arg));
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enum mp_csp mp_image_csp(struct mp_image *img);
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enum mp_csp_levels mp_image_levels(struct mp_image *img);
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struct mp_csp_details;
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void mp_image_set_colorspace_details(struct mp_image *image,
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struct mp_csp_details *csp);
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// this macro requires img_format.h to be included too:
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#define MP_IMAGE_PLANAR_BITS_PER_PIXEL_ON_PLANE(mpi, p) \
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(IMGFMT_IS_YUVP16((mpi)->imgfmt) ? 16 : 8)
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#define MP_IMAGE_BITS_PER_PIXEL_ON_PLANE(mpi, p) \
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(((mpi)->flags & MP_IMGFLAG_PLANAR) \
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? MP_IMAGE_PLANAR_BITS_PER_PIXEL_ON_PLANE(mpi, p) \
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: (mpi)->bpp)
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#define MP_IMAGE_BYTES_PER_ROW_ON_PLANE(mpi, p) \
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((MP_IMAGE_BITS_PER_PIXEL_ON_PLANE(mpi, p) * ((mpi)->w >> (p ? mpi->chroma_x_shift : 0)) + 7) / 8)
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#endif /* MPLAYER_MP_IMAGE_H */
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