mpv/video/hwdec.h

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#ifndef MP_HWDEC_H_
#define MP_HWDEC_H_
#include <libavutil/buffer.h>
#include <libavutil/hwcontext.h>
#include "options/m_option.h"
struct mp_image_pool;
struct mp_hwdec_ctx {
const char *driver_name; // NULL if unknown/not loaded
// libavutil-wrapped context, if available.
struct AVBufferRef *av_device_ref; // AVHWDeviceContext*
// List of allowed IMGFMT_s, terminated with 0.
// If NULL, all software formats are considered to be supported.
video: rewrite filtering glue code Get rid of the old vf.c code. Replace it with a generic filtering framework, which can potentially handle more than just --vf. At least reimplementing --af with this code is planned. This changes some --vf semantics (including runtime behavior and the "vf" command). The most important ones are listed in interface-changes. vf_convert.c is renamed to f_swscale.c. It is now an internal filter that can not be inserted by the user manually. f_lavfi.c is a refactor of player/lavfi.c. The latter will be removed once --lavfi-complex is reimplemented on top of f_lavfi.c. (which is conceptually easy, but a big mess due to the data flow changes). The existing filters are all changed heavily. The data flow of the new filter framework is different. Especially EOF handling changes - EOF is now a "frame" rather than a state, and must be passed through exactly once. Another major thing is that all filters must support dynamic format changes. The filter reconfig() function goes away. (This sounds complex, but since all filters need to handle EOF draining anyway, they can use the same code, and it removes the mess with reconfig() having to predict the output format, which completely breaks with libavfilter anyway.) In addition, there is no automatic format negotiation or conversion. libavfilter's primitive and insufficient API simply doesn't allow us to do this in a reasonable way. Instead, filters can use f_autoconvert as sub-filter, and tell it which formats they support. This filter will in turn add actual conversion filters, such as f_swscale, to perform necessary format changes. vf_vapoursynth.c uses the same basic principle of operation as before, but with worryingly different details in data flow. Still appears to work. The hardware deint filters (vf_vavpp.c, vf_d3d11vpp.c, vf_vdpaupp.c) are heavily changed. Fortunately, they all used refqueue.c, which is for sharing the data flow logic (especially for managing future/past surfaces and such). It turns out it can be used to factor out most of the data flow. Some of these filters accepted software input. Instead of having ad-hoc upload code in each filter, surface upload is now delegated to f_autoconvert, which can use f_hwupload to perform this. Exporting VO capabilities is still a big mess (mp_stream_info stuff). The D3D11 code drops the redundant image formats, and all code uses the hw_subfmt (sw_format in FFmpeg) instead. Although that too seems to be a big mess for now. f_async_queue is unused.
2018-01-16 10:53:44 +00:00
const int *supported_formats;
// HW format used by the hwdec
video: rewrite filtering glue code Get rid of the old vf.c code. Replace it with a generic filtering framework, which can potentially handle more than just --vf. At least reimplementing --af with this code is planned. This changes some --vf semantics (including runtime behavior and the "vf" command). The most important ones are listed in interface-changes. vf_convert.c is renamed to f_swscale.c. It is now an internal filter that can not be inserted by the user manually. f_lavfi.c is a refactor of player/lavfi.c. The latter will be removed once --lavfi-complex is reimplemented on top of f_lavfi.c. (which is conceptually easy, but a big mess due to the data flow changes). The existing filters are all changed heavily. The data flow of the new filter framework is different. Especially EOF handling changes - EOF is now a "frame" rather than a state, and must be passed through exactly once. Another major thing is that all filters must support dynamic format changes. The filter reconfig() function goes away. (This sounds complex, but since all filters need to handle EOF draining anyway, they can use the same code, and it removes the mess with reconfig() having to predict the output format, which completely breaks with libavfilter anyway.) In addition, there is no automatic format negotiation or conversion. libavfilter's primitive and insufficient API simply doesn't allow us to do this in a reasonable way. Instead, filters can use f_autoconvert as sub-filter, and tell it which formats they support. This filter will in turn add actual conversion filters, such as f_swscale, to perform necessary format changes. vf_vapoursynth.c uses the same basic principle of operation as before, but with worryingly different details in data flow. Still appears to work. The hardware deint filters (vf_vavpp.c, vf_d3d11vpp.c, vf_vdpaupp.c) are heavily changed. Fortunately, they all used refqueue.c, which is for sharing the data flow logic (especially for managing future/past surfaces and such). It turns out it can be used to factor out most of the data flow. Some of these filters accepted software input. Instead of having ad-hoc upload code in each filter, surface upload is now delegated to f_autoconvert, which can use f_hwupload to perform this. Exporting VO capabilities is still a big mess (mp_stream_info stuff). The D3D11 code drops the redundant image formats, and all code uses the hw_subfmt (sw_format in FFmpeg) instead. Although that too seems to be a big mess for now. f_async_queue is unused.
2018-01-16 10:53:44 +00:00
int hw_imgfmt;
hwtransfer: implement support for hw->hw format conversion Historically, we have not attempted to support hw->hw format conversion in the autoconvert logic. If a user needed to do these kinds of conversions, they needed to manually insert the hw format's conversion filter manually (eg: scale_vaapi). This was usually fine because the general rule is that any format supported by the hardware can be used as well as any other. ie: You would only need to do conversion if you have a specific goal in mind. However, we now have two situations where we can find ourselves with a hardware format being produced by a decoder that cannot be accepted by a VO via hwdec-interop: * dmabuf-wayland can only accept formats that the Wayland compositor accepts. In the case of GNOME, it can only accept a handful of RGB formats. * When decoding via VAAPI on Intel hardware, some of the more unusual video encodings (4:2:2, 10bit 4:4:4) lead to packed frame formats which gpu-next cannot handle, causing rendering to fail. In both these cases (at least when using VAAPI with dmabuf-wayland), if we could detect the failure case and insert a `scale_vaapi` filter, we could get successful output automatically. For `hwdec=drm`, there is currently no conversion filter, so dmabuf-wayland is still out of luck there. The basic approach to implementing this is to detect the case where we are evaluating a hardware format where the VO can accept the hardware format itself, but may not accept the underlying sw format. In the current code, we bypass autoconvert as soon as we see the hardware format is compatible. My first observation was that we actually have logic in autoconvert to detect when the input sw format is not in the list of allowed sw formats passed into the autoconverter. Unfortunately, we never populate this list, and the way you would expect to do that is vo-query-format returning sw format information, which it does not. We could define an extended vo-query-format-2, but we'd still need to implement the probing logic to fill it in. On the other hand, we already have the probing logic in the hwupload filter - and most recently I used that logic to implement conversion on upload. So if we could leverage that, we could both detect when hw->hw conversion is required, and pick the best target format. This exercise is then primarily one of detecting when we are in this case and letting that code run in a useful way. The hwupload filter is a bit awkward to work with today, and so I refactored a bunch of the set up code to actually make it more encapsulated. Now, instead of the caller instantiating it and then triggering the probe, we probe on creation and instantiate the correct underlying filter (hwupload vs conversion) automatically.
2023-07-29 14:43:58 +00:00
// The name of this hwdec's matching conversion filter if available.
// This will be used for hardware conversion of frame formats.
// NULL otherwise.
const char *conversion_filter_name;
hwtransfer: use the right hardware config to find conversion targets The last piece in the puzzle for doing hardware conversions automatically is ensuring we only consider valid target formats for the conversion. Although it is unintuitive, some vaapi drivers can expose a different set of formats for uploads vs for conversions, and that is the case on the Intel hardware I have here. Before this change, we would use the upload target list, and our selection algorithm would pick a format that doesn't work for conversions, causing everything to fail. Whoops. Successfully obtaining the conversion target format list is a bit of a convoluted process, with only parts of it encapsulated by ffmpeg. Specifically, ffmpeg understands the concept of hardware configurations that can affect the constraints of a device, but does not define what configurations are - that is left up to the specific hwdevice type. In the case of vaapi, we need to create a config for the video processing endpoint, and use that when querying for constraints. I decided to encapsulate creation of the config as part of the hwdec init process, so that the constraint query can be down in the hwtransfer code in an opaque way. I don't know if any other hardware will need this capability, but if so, we'll be able to account for it. Then, when we look at probing, instead of checking for what formats are supported for transfers, we use the results of the constraint query with the conversion config. And as that config doesn't depend on the source format, we only need to do it once.
2023-08-03 02:45:35 +00:00
// The libavutil hwconfig to be used when querying constraints for the
// conversion filter. Can be NULL if no special config is required.
void *conversion_config;
};
// Used to communicate hardware decoder device handles from VO to video decoder.
struct mp_hwdec_devices;
struct mp_hwdec_devices *hwdec_devices_create(void);
void hwdec_devices_destroy(struct mp_hwdec_devices *devs);
struct mp_hwdec_ctx *hwdec_devices_get_by_imgfmt_and_type(struct mp_hwdec_devices *devs,
int hw_imgfmt,
enum AVHWDeviceType device_type);
video: rewrite filtering glue code Get rid of the old vf.c code. Replace it with a generic filtering framework, which can potentially handle more than just --vf. At least reimplementing --af with this code is planned. This changes some --vf semantics (including runtime behavior and the "vf" command). The most important ones are listed in interface-changes. vf_convert.c is renamed to f_swscale.c. It is now an internal filter that can not be inserted by the user manually. f_lavfi.c is a refactor of player/lavfi.c. The latter will be removed once --lavfi-complex is reimplemented on top of f_lavfi.c. (which is conceptually easy, but a big mess due to the data flow changes). The existing filters are all changed heavily. The data flow of the new filter framework is different. Especially EOF handling changes - EOF is now a "frame" rather than a state, and must be passed through exactly once. Another major thing is that all filters must support dynamic format changes. The filter reconfig() function goes away. (This sounds complex, but since all filters need to handle EOF draining anyway, they can use the same code, and it removes the mess with reconfig() having to predict the output format, which completely breaks with libavfilter anyway.) In addition, there is no automatic format negotiation or conversion. libavfilter's primitive and insufficient API simply doesn't allow us to do this in a reasonable way. Instead, filters can use f_autoconvert as sub-filter, and tell it which formats they support. This filter will in turn add actual conversion filters, such as f_swscale, to perform necessary format changes. vf_vapoursynth.c uses the same basic principle of operation as before, but with worryingly different details in data flow. Still appears to work. The hardware deint filters (vf_vavpp.c, vf_d3d11vpp.c, vf_vdpaupp.c) are heavily changed. Fortunately, they all used refqueue.c, which is for sharing the data flow logic (especially for managing future/past surfaces and such). It turns out it can be used to factor out most of the data flow. Some of these filters accepted software input. Instead of having ad-hoc upload code in each filter, surface upload is now delegated to f_autoconvert, which can use f_hwupload to perform this. Exporting VO capabilities is still a big mess (mp_stream_info stuff). The D3D11 code drops the redundant image formats, and all code uses the hw_subfmt (sw_format in FFmpeg) instead. Although that too seems to be a big mess for now. f_async_queue is unused.
2018-01-16 10:53:44 +00:00
// For code which still strictly assumes there is 1 (or none) device.
struct mp_hwdec_ctx *hwdec_devices_get_first(struct mp_hwdec_devices *devs);
video: rewrite filtering glue code Get rid of the old vf.c code. Replace it with a generic filtering framework, which can potentially handle more than just --vf. At least reimplementing --af with this code is planned. This changes some --vf semantics (including runtime behavior and the "vf" command). The most important ones are listed in interface-changes. vf_convert.c is renamed to f_swscale.c. It is now an internal filter that can not be inserted by the user manually. f_lavfi.c is a refactor of player/lavfi.c. The latter will be removed once --lavfi-complex is reimplemented on top of f_lavfi.c. (which is conceptually easy, but a big mess due to the data flow changes). The existing filters are all changed heavily. The data flow of the new filter framework is different. Especially EOF handling changes - EOF is now a "frame" rather than a state, and must be passed through exactly once. Another major thing is that all filters must support dynamic format changes. The filter reconfig() function goes away. (This sounds complex, but since all filters need to handle EOF draining anyway, they can use the same code, and it removes the mess with reconfig() having to predict the output format, which completely breaks with libavfilter anyway.) In addition, there is no automatic format negotiation or conversion. libavfilter's primitive and insufficient API simply doesn't allow us to do this in a reasonable way. Instead, filters can use f_autoconvert as sub-filter, and tell it which formats they support. This filter will in turn add actual conversion filters, such as f_swscale, to perform necessary format changes. vf_vapoursynth.c uses the same basic principle of operation as before, but with worryingly different details in data flow. Still appears to work. The hardware deint filters (vf_vavpp.c, vf_d3d11vpp.c, vf_vdpaupp.c) are heavily changed. Fortunately, they all used refqueue.c, which is for sharing the data flow logic (especially for managing future/past surfaces and such). It turns out it can be used to factor out most of the data flow. Some of these filters accepted software input. Instead of having ad-hoc upload code in each filter, surface upload is now delegated to f_autoconvert, which can use f_hwupload to perform this. Exporting VO capabilities is still a big mess (mp_stream_info stuff). The D3D11 code drops the redundant image formats, and all code uses the hw_subfmt (sw_format in FFmpeg) instead. Although that too seems to be a big mess for now. f_async_queue is unused.
2018-01-16 10:53:44 +00:00
// Return the n-th device. NULL if none.
struct mp_hwdec_ctx *hwdec_devices_get_n(struct mp_hwdec_devices *devs, int n);
// Add this to the list of internal devices. Adding the same pointer twice must
// be avoided.
void hwdec_devices_add(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx);
// Remove this from the list of internal devices. Idempotent/ignores entries
vo_gpu: make it possible to load multiple hwdec interop drivers Make the VO<->decoder interface capable of supporting multiple hwdec APIs at once. The main gain is that this simplifies autoprobing a lot. Before this change, it could happen that the VO loaded the "wrong" hwdec API, and the decoder was stuck with the choice (breaking hw decoding). With the change applied, the VO simply loads all available APIs, so autoprobing trickery is left entirely to the decoder. In the past, we were quite careful about not accidentally loading the wrong interop drivers. This was in part to make sure autoprobing works, but also because libva had this obnoxious bug of dumping garbage to stderr when using the API. libva was fixed, so this is not a problem anymore. The --opengl-hwdec-interop option is changed in various ways (again...), and renamed to --gpu-hwdec-interop. It does not have much use anymore, other than debugging. It's notable that the order in the hwdec interop array ra_hwdec_drivers[] still matters if multiple drivers support the same image formats, so the option can explicitly force one, if that should ever be necessary, or more likely, for debugging. One example are the ra_hwdec_d3d11egl and ra_hwdec_d3d11eglrgb drivers, which both support d3d11 input. vo_gpu now always loads the interop lazily by default, but when it does, it loads them all. vo_opengl_cb now always loads them when the GL context handle is initialized. I don't expect that this causes any problems. It's now possible to do things like changing between vdpau and nvdec decoding at runtime. This is also preparation for cleaning up vd_lavc.c hwdec autoprobing. It's another reason why hwdec_devices_request_all() does not take a hwdec type anymore.
2017-12-01 04:05:00 +00:00
// not added yet. This is not thread-safe.
void hwdec_devices_remove(struct mp_hwdec_devices *devs, struct mp_hwdec_ctx *ctx);
struct hwdec_imgfmt_request {
int imgfmt;
bool probing;
};
// Can be used to enable lazy loading of an API with hwdec_devices_request().
// If used at all, this must be set/unset during initialization/uninitialization,
// as concurrent use with hwdec_devices_request() is a race condition.
void hwdec_devices_set_loader(struct mp_hwdec_devices *devs,
void (*load_api)(void *ctx, struct hwdec_imgfmt_request *params),
void *load_api_ctx);
// Cause VO to lazily load all devices for a specified img format, and will
// block until this is done (even if not available). Pass IMGFMT_NONE to load
// all available devices.
void hwdec_devices_request_for_img_fmt(struct mp_hwdec_devices *devs,
struct hwdec_imgfmt_request *params);
vo_gpu: make it possible to load multiple hwdec interop drivers Make the VO<->decoder interface capable of supporting multiple hwdec APIs at once. The main gain is that this simplifies autoprobing a lot. Before this change, it could happen that the VO loaded the "wrong" hwdec API, and the decoder was stuck with the choice (breaking hw decoding). With the change applied, the VO simply loads all available APIs, so autoprobing trickery is left entirely to the decoder. In the past, we were quite careful about not accidentally loading the wrong interop drivers. This was in part to make sure autoprobing works, but also because libva had this obnoxious bug of dumping garbage to stderr when using the API. libva was fixed, so this is not a problem anymore. The --opengl-hwdec-interop option is changed in various ways (again...), and renamed to --gpu-hwdec-interop. It does not have much use anymore, other than debugging. It's notable that the order in the hwdec interop array ra_hwdec_drivers[] still matters if multiple drivers support the same image formats, so the option can explicitly force one, if that should ever be necessary, or more likely, for debugging. One example are the ra_hwdec_d3d11egl and ra_hwdec_d3d11eglrgb drivers, which both support d3d11 input. vo_gpu now always loads the interop lazily by default, but when it does, it loads them all. vo_opengl_cb now always loads them when the GL context handle is initialized. I don't expect that this causes any problems. It's now possible to do things like changing between vdpau and nvdec decoding at runtime. This is also preparation for cleaning up vd_lavc.c hwdec autoprobing. It's another reason why hwdec_devices_request_all() does not take a hwdec type anymore.
2017-12-01 04:05:00 +00:00
// Return "," concatenated list (for introspection/debugging). Use talloc_free().
char *hwdec_devices_get_names(struct mp_hwdec_devices *devs);
2017-10-16 15:06:01 +00:00
struct mp_image;
struct mpv_global;
struct hwcontext_create_dev_params {
bool probing; // if true, don't log errors if unavailable
};
// Per AV_HWDEVICE_TYPE_* functions, queryable via hwdec_get_hwcontext_fns().
// All entries are strictly optional.
struct hwcontext_fns {
int av_hwdevice_type;
// Fill in special format-specific requirements.
void (*refine_hwframes)(struct AVBufferRef *hw_frames_ctx);
// Returns a AVHWDeviceContext*. Used for copy hwdecs.
struct AVBufferRef *(*create_dev)(struct mpv_global *global,
struct mp_log *log,
struct hwcontext_create_dev_params *params);
// Return whether this is using some sort of sub-optimal emulation layer.
bool (*is_emulated)(struct AVBufferRef *hw_device_ctx);
};
// The parameter is of type enum AVHWDeviceType (as in int to avoid extensive
// recursive includes). May return NULL for unknown device types.
const struct hwcontext_fns *hwdec_get_hwcontext_fns(int av_hwdevice_type);
extern const struct hwcontext_fns hwcontext_fns_cuda;
extern const struct hwcontext_fns hwcontext_fns_d3d11;
hwdec/drmprime: add drmprime hwdec-interop In the confusing landscape of hardware video decoding APIs, we have had a long standing support gap for the v4l2 based APIs implemented for the various SoCs from Rockship, Amlogic, Allwinner, etc. While VAAPI is the defacto default for desktop GPUs, the developers who work on these SoCs (who are not the vendors!) have preferred to implement kernel APIs rather than maintain a userspace driver as VAAPI would require. While there are two v4l2 APIs (m2m and requests), and multiple forks of ffmpeg where support for those APIs languishes without reaching upstream, we can at least say that these APIs export frames as DRMPrime dmabufs, and that they use the ffmpeg drm hwcontext. With those two constants, it is possible for us to write a hwdec-interop without worrying about the mess underneath - for the most part. Accordingly, this change implements a hwdec-interop for any decoder that produces frames as DRMPrime dmabufs. The bulk of the heavy lifting is done by the dmabuf interop code we already had from supporting vaapi, and which I refactored for reusability in a previous set of changes. When we combine that with the fact that we can't probe for supported formats, the new code in this change is pretty simple. This change also includes the hwcontext_fns that are required for us to be able to configure the hwcontext used by `hwdec=drm-copy`. This is technically unrelated, but it seemed a good time to fill this gap. From a testing perspective, I have directly tested on a RockPRO64, while others have tested with different flavours of Rockchip and on Amlogic, providing m2m coverage. I have some other SoCs that I need to spin up to test with, but I don't expect big surprises, and when we inevitably need to account for new special cases down the line, we can do so - we won't be able to support every possible configuration blindly.
2022-07-31 20:47:23 +00:00
extern const struct hwcontext_fns hwcontext_fns_drmprime;
extern const struct hwcontext_fns hwcontext_fns_dxva2;
extern const struct hwcontext_fns hwcontext_fns_vaapi;
extern const struct hwcontext_fns hwcontext_fns_vdpau;
#endif