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video: initial Matroska 3D support

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This inserts an automatic conversion filter if a Matroska file is marked
as 3D (StereoMode element). The basic idea is similar to video rotation
and colorspace handling: the 3D mode is added as a property to the video
params. Depending on this property, a video filter can be inserted.

As of this commit, extending mp_image_params is actually completely
unnecessary - but the idea is that it will make it easier to integrate
with VOs supporting stereo 3D mogrification. Although vo_opengl does
support some stereo rendering, it didn't support the mode my sample file
used, so I'll leave that part for later.

Not that most mappings from Matroska mode to vf_stereo3d mode are
probably wrong, and some are missing.

Assuming that Matroska modes, and vf_stereo3d in modes, and out modes
are all the same might be an oversimplification - we'll see.

See issue #1045.
This commit is contained in:
wm4
2014-08-30 23:24:46 +02:00
parent c80adac077
commit 8599c959fe
15 changed files with 146 additions and 2 deletions
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6
options/m_option.h
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@@ -56,6 +56,7 @@ extern const m_option_type_t m_option_type_msglevels;
extern const m_option_type_t m_option_type_print_fn;
extern const m_option_type_t m_option_type_subconfig;
extern const m_option_type_t m_option_type_imgfmt;
extern const m_option_type_t m_option_vid_stereo_mode;
extern const m_option_type_t m_option_type_fourcc;
extern const m_option_type_t m_option_type_afmt;
extern const m_option_type_t m_option_type_color;
@@ -648,8 +649,11 @@ extern const char m_option_path_separator;
#define OPT_TRACKCHOICE(name, var) \
OPT_CHOICE_OR_INT(name, var, 0, 1, 8190, ({"no", -2}, {"auto", -1}))
#define OPT_VID_STEREO_MODE(...) \
OPT_GENERAL(int, __VA_ARGS__, .type = &m_option_vid_stereo_mode)
#define OPT_STRING_VALIDATE_(optname, varname, flags, validate_fn, ...) \
OPT_GENERAL(char*, optname, varname, flags, __VA_ARGS__, \
OPT_GENERAL(char*, optname, varname, flags, __VA_ARGS__, \
.priv = MP_EXPECT_TYPE(m_opt_string_validate_fn, validate_fn))
#define OPT_STRING_VALIDATE(...) \
OPT_STRING_VALIDATE_(__VA_ARGS__, .type = &m_option_type_string)