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* vo_opengl: let hwdec driver report the exact image formatwm42015-01-291-1/+2
| | | | | | | | | | | | | | | | | | | | Hardware decoding/displaying with vo_opengl is done by replacing the normal video textures with textures provided by the hardware decoding API OpenGL interop code. Often, this changes the format (vaglx and vdpau return RGBA, vda returns packed YUV). If the format is changed, there was a chance (or at least a higher potential for bugs) that the shader generation code could be confused by the mismatch of formats, and would create incorrect conversions. Simplify this by requiring the hwdec interop driver to set the format it will return to us. This affects all fields, not just some (done by replacing the format with the value of the converted_imgfmt field in init_format), in particular fields like colorlevels. Currently, no hwdec interop driver does anything sophisticated, and the win is mostly from the mp_image_params_guess_csp() function, which will reset fields like colorlevels to expected value if RGBA is used.
* vo_opengl: update a commentwm42015-01-261-2/+3
| | | | We don't use the hwdec-provided video texture for screenshots anymore.
* video: handle hwdec screenshots differentlywm42015-01-221-3/+1
| | | | | | | | Instead of converting the hw surface to an image in the VO, provide a generic way to convet hw surfaces, and use this in the screenshot code. It's all relatively straightforward, except vdpau is being terrible. It needs a huge chunk of new code, because copying back is not simple.
* video: have a generic context struct for hwdec backendswm42015-01-221-3/+2
| | | | | | | | | | | Before this commit, each hw backend had their own specific struct types for context, and some, like VDA, had none at all. Add a context struct (mp_hwdec_ctx) that provides a somewhat generic way to pass the hwdec context around. Some things get slightly better, some slightly more verbose. mp_hwdec_info is still around; it's still needed, but is reduced to its role of handling delayed loading of the hwdec backend.
* client API: expose OpenGL rendererwm42014-12-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds API to libmpv that lets host applications use the mpv opengl renderer. This is a more flexible (and possibly more portable) option to foreign window embedding (via --wid). This assumes that methods like context sharing and multithreaded OpenGL rendering are infeasible, and that a way is needed to integrate it with an application that uses a single thread to render everything. Add an example that does this with QtQuick/qml. The example is relatively lazy, but still shows how relatively simple the integration is. The FBO indirection could probably be avoided, but would require more work (and would probably lead to worse QtQuick integration, because it would have to ignore transformations like rotation). Because this makes mpv directly use the host application's OpenGL context, there is no platform specific code involved in mpv, except for hw decoding interop. main.qml is derived from some Qt example. The following things are still missing: - a way to do better video timing - expose GL renderer options, allow changing them at runtime - support for color equalizer controls - support for screenshots
* vo_opengl: move hwdec parts into their own fileswm42014-12-031-0/+56
This wasn't done before because there was no advantage in "abstracting" it. This changed, and putting this into its own files is better than messing it into gl_common.c/h.