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https://github.com/mpv-player/mpv
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2a9534871d
This is somewhat imperfect, because detection of hw decoding APIs is mostly done on demand, and often avoided if not necessary. (For example, we know very well that there are no hw decoders for certain codecs.) This also requires every hwdec backend to identify itself (see hwdec.h changes).
76 lines
2.2 KiB
C
76 lines
2.2 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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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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// For horrible Intel shit-drivers only
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void (*lock)(struct lavc_ctx *ctx);
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void (*unlock)(struct lavc_ctx *ctx);
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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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