mirror of
https://github.com/mpv-player/mpv
synced 2024-12-28 18:12:22 +00:00
641e94cd27
This code is actually quite inefficient: it reuses the (slow, simple) screenshot code. It uses an inefficient method to read the image (vaGetImage() instead of vaDeriveImage()), allocates new memory for each frame that is read, and it tries all image formats again each time. Also, in my tests it always picked NV12 as image format, which is not ideal if you actually want to filter the video, and vo_xv can't handle this format without conversion either. However, a user confirmed that it worked for him, so everything is fine.
86 lines
2.5 KiB
C
86 lines
2.5 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 "config.h"
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#include "demux/stheader.h"
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#include "video/mp_image.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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AVCodecContext *avctx;
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AVFrame *pic;
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struct vd_lavc_hwdec *hwdec;
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enum PixelFormat pix_fmt;
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int do_hw_dr1;
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int best_csp;
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struct mp_image_params image_params;
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struct mp_image_params vo_image_params;
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AVRational last_sample_aspect_ratio;
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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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// Legacy
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bool do_dr1;
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struct FramePool *dr1_buffer_pool;
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struct mp_image_pool *non_dr1_pool;
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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 non-NULL: lists pairs software and hardware decoders. If the current
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// codec is not one of the listed software decoders, probing fails.
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// Otherwise, the AVCodecContext is initialized with the associated
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// hardware decoder.
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// Useful only if hw decoding requires a special codec, instead of using
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// the libavcodec hwaccel infrastructure.
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const char **codec_pairs;
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// If not-NULL: a 0 terminated list of IMGFMT_ formats, and only one of
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// these formats is accepted in the libavcodec get_format callback.
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const int *image_formats;
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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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void (*uninit)(struct lavc_ctx *ctx);
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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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};
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// lavc_dr1.c
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int mp_codec_get_buffer(AVCodecContext *s, AVFrame *frame);
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void mp_codec_release_buffer(AVCodecContext *s, AVFrame *frame);
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struct FrameBuffer;
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void mp_buffer_ref(struct FrameBuffer *buffer);
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void mp_buffer_unref(struct FrameBuffer *buffer);
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bool mp_buffer_is_unique(struct FrameBuffer *buffer);
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void mp_buffer_pool_free(struct FramePool **pool);
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#endif
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