156 lines
5.1 KiB
C
156 lines
5.1 KiB
C
// Since we don't use ExportAsPlanar, we don't actually need libp2p.
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// So instead of adding another wrap and meson build file, and *also*
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// patching the include statement in videosource.cpp, we throw a dummy
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// header file in the folder that should contain the checkout of libp2p.
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#ifndef P2P_API_H_
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#define P2P_API_H_
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Notation: [Xa-Ya-Za]
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*
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* [] denotes a machine word of the specified endianness. Xa-Ya-Za denote
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* component X, Y, and Z packed in the word, with bit depths a, b, c, in order
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* from MSB to LSB. Padding bits are represented by the component '!'.
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*/
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enum p2p_packing {
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/** [R8-G8-B8] */
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p2p_rgb24_be, /* RGB */
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p2p_rgb24_le, /* BGR */
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p2p_rgb24,
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/** [A8-R8-G8-B8] */
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p2p_argb32_be, /* ARGB */
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p2p_argb32_le, /* BGRA */
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p2p_argb32,
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/** [A8-Y8-U8-V8] */
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p2p_ayuv_be, /* AYUV */
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p2p_ayuv_le, /* VUYA */
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p2p_ayuv,
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/** [R16-G16-B16] */
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p2p_rgb48_be, /* RGB, big-endian components */
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p2p_rgb48_le, /* BGR, little-endian components */
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p2p_rgb48,
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/** [A16-R16-G16-B16] */
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p2p_argb64_be, /* ARGB big-endian components */
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p2p_argb64_le, /* BGRA little-endian components */
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p2p_argb64,
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/** [A2-R10-G10-B10] */
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p2p_rgb30_be, /* ARGB packed in big-endian DWORD */
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p2p_rgb30_le, /* ARGB packed in little-endian DWORD */
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p2p_rgb30,
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/** [A2-V10-Y10-U10] */
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p2p_y410_be, /* AVYU packed in big-endian DWORD */
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p2p_y410_le, /* AVYU packed in little-endian DWORD */
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p2p_y410,
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/** [A16-V16-Y16-U16] */
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p2p_y416_be, /* AVYU, big-endian components */
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p2p_y416_le, /* UYVA, little-endian components */
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p2p_y416,
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/** [Y8] [U8] [Y8] [V8] */
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p2p_yuy2,
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/** [U8] [Y8] [V8] [Y8] */
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p2p_uyvy,
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/** [Y10-!6] [U10-!6] [Y10-!6] [V10-!6] */
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p2p_y210_be, /* YUYV, big-endian components, lower 6 bits zero */
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p2p_y210_le, /* YUYV, little-endian components, lower 6 bits zero. Microsoft Y210. */
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p2p_y210,
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/** [Y16] [U16] [Y16] [V16] */
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p2p_y216_be, /* YUYV, big-endian components */
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p2p_y216_le, /* YUYV, little-endian components. Microsoft Y216. */
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p2p_y216,
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/** [!2-V10-Y10-U10] [!2-Y10-U10-Y10] [!2-U10-Y10-V10] [!2-Y10-V10-Y10] */
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p2p_v210_be, /* v210 with big-endian DWORDs */
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p2p_v210_le, /* Apple/QuickTime v210 */
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p2p_v210,
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/** [U16] [Y16] [V16] [Y16] */
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p2p_v216_be, /* UYVY, big-endian components */
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p2p_v216_le, /* UYVY, little-endian components. Apple/QuickTime v216. */
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p2p_v216,
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/** [U8-V8] */
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p2p_nv12_be, /* aka NV21, V first */
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p2p_nv12_le, /* NV12 */
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p2p_nv12,
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/** [U10-!6-V10-!6] */
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p2p_p010_be, /* NV21, big-endian components, lower 6 bits zero */
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p2p_p010_le, /* NV12, little-endian components, lower 6 bits zero. Microsoft P010. */
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p2p_p010,
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/** [U16-V16] */
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p2p_p016_be, /* NV21, big-endian components */
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p2p_p016_le, /* NV12, little-endian components. Microsoft P016. */
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p2p_p016,
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/** [U10-!6-V10-!6] */
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p2p_p210_be, /* NV21, big-endian components, lower 6 bits zero */
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p2p_p210_le, /* NV12, little-endian components, lower 6 bits zero. Microsoft P210. */
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p2p_p210,
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/** [U16-V16] */
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p2p_p216_be, /* NV21, big-endian components */
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p2p_p216_le, /* NV12, little-endian components. Microsoft P216. */
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p2p_p216,
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/** [R8-G8-B8-A8] */
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p2p_rgba32_be, /* RGBA */
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p2p_rgba32_le, /* ABGR */
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p2p_rgba32,
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/** [R16-G16-B16-A16] */
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p2p_rgba64_be, /* RGBA, big-endian components */
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p2p_rgba64_le, /* ABGR, little-endian components */
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p2p_rgba64,
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/** [A16-B16-G16-R16] */
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p2p_abgr64_be, /* ABGR, big-endian components */
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p2p_abgr64_le, /* RGBA, little-endian components */
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p2p_abgr64,
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/** [B16-G16-R16] */
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p2p_bgr48_be, /* BGR, big-endian components */
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p2p_bgr48_le, /* RGB, little-endian components */
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p2p_bgr48,
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/** [B16-G16-R16-A16] */
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p2p_bgra64_be, /* BGRA, big-endian components */
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p2p_bgra64_le, /* ARGB, little-endian components */
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p2p_bgra64,
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p2p_packing_max,
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};
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struct p2p_buffer_param {
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/**
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* Planar order: R-G-B-A or Y-U-V-A. Alpha is optional.
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* Packed order: Y-UV if NV12/21, else single plane. Y optional for NV12/21.
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*/
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const void *src[4];
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void *dst[4];
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ptrdiff_t src_stride[4];
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ptrdiff_t dst_stride[4];
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unsigned width;
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unsigned height;
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enum p2p_packing packing;
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};
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/** Pack/unpack a range of pixels from a scanline. */
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typedef void (*p2p_unpack_func)(const void *src, void * const dst[4], unsigned left, unsigned right);
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typedef void (*p2p_pack_func)(const void * const src[4], void *dst, unsigned left, unsigned right);
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/** Select a line pack/unpack function. */
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p2p_unpack_func p2p_select_unpack_func(enum p2p_packing packing);
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p2p_pack_func p2p_select_pack_func(enum p2p_packing packing);
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p2p_pack_func p2p_select_pack_func_ex(enum p2p_packing packing, int alpha_one_fill);
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/** When processing formats like NV12, ignore the unpacked plane. */
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#define P2P_SKIP_UNPACKED_PLANES (1UL << 0)
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/** When packing, store a bit pattern of all ones in the alpha channel instead of all zeros. */
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#define P2P_ALPHA_SET_ONE (1UL << 1)
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/** Helper function to pack/unpack between memory locations. */
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void p2p_unpack_frame(const struct p2p_buffer_param *param, unsigned long flags) {};
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void p2p_pack_frame(const struct p2p_buffer_param *param, unsigned long flags) {};
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* P2P_API_H_ */
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