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https://github.com/mpv-player/mpv
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d99f30d726
mpv supports two hardware decoding APIs on Linux: vdpau and vaapi. Each of these has emulation wrappers. The wrappers are usually slower and have fewer features than their native opposites. In particular the libva vdpau driver is practically unmaintained. Check the vendor string and print a warning if emulation is detected. Checking vendor strings is a very stupid thing to do, but I find the thought of people using an emulated API for no reason worse. Also, make --hwdec=auto never use an API that is detected as emulated. This doesn't work quite right yet, because once one API is loaded, vo_opengl doesn't unload it, so no hardware decoding will be used if the first probed API (usually vdpau) is rejected. But good enough.
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
#ifndef MPV_LAVC_H
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#define MPV_LAVC_H
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#include <stdbool.h>
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#include <libavcodec/avcodec.h>
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#include "demux/stheader.h"
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#include "video/mp_image.h"
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#include "video/hwdec.h"
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// keep in sync with --hwdec option
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enum hwdec_type {
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HWDEC_AUTO = -1,
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HWDEC_NONE = 0,
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HWDEC_VDPAU = 1,
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HWDEC_VDA = 2,
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HWDEC_CRYSTALHD = 3,
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HWDEC_VAAPI = 4,
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HWDEC_VAAPI_COPY = 5,
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};
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typedef struct lavc_ctx {
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struct mp_log *log;
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struct MPOpts *opts;
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AVCodecContext *avctx;
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AVFrame *pic;
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struct vd_lavc_hwdec *hwdec;
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int selected_hwdec;
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enum AVPixelFormat pix_fmt;
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int best_csp;
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enum AVDiscard skip_frame;
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const char *software_fallback_decoder;
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// From VO
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struct mp_hwdec_info *hwdec_info;
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// For free use by hwdec implementation
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void *hwdec_priv;
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int hwdec_fmt;
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int hwdec_w;
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int hwdec_h;
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int hwdec_profile;
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} vd_ffmpeg_ctx;
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struct vd_lavc_hwdec {
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enum hwdec_type type;
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// If not-0: the IMGFMT_ format that should be accepted in the libavcodec
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// get_format callback.
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int image_format;
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int (*probe)(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
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const char *decoder);
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int (*init)(struct lavc_ctx *ctx);
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int (*init_decoder)(struct lavc_ctx *ctx, int fmt, int w, int h);
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void (*uninit)(struct lavc_ctx *ctx);
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// Note: if init_decoder is set, this will always use the values from the
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// last successful init_decoder call. Otherwise, it's up to you.
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struct mp_image *(*allocate_image)(struct lavc_ctx *ctx, int fmt,
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int w, int h);
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// Process the image returned by the libavcodec decoder.
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struct mp_image *(*process_image)(struct lavc_ctx *ctx, struct mp_image *img);
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};
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enum {
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HWDEC_ERR_NO_CTX = -2,
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HWDEC_ERR_NO_CODEC = -3,
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HWDEC_ERR_EMULATED = -4, // probing successful, but emulated API detected
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};
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struct hwdec_profile_entry {
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enum AVCodecID av_codec;
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int ff_profile;
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uint64_t hw_profile;
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};
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const struct hwdec_profile_entry *hwdec_find_profile(
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struct lavc_ctx *ctx, const struct hwdec_profile_entry *table);
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bool hwdec_check_codec_support(const char *decoder,
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const struct hwdec_profile_entry *table);
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int hwdec_get_max_refs(struct lavc_ctx *ctx);
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#endif
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