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#ifndef MPV_LAVC_H
#define MPV_LAVC_H
#include <stdbool.h>
#include <pthread.h>
#include <libavcodec/avcodec.h>
#include <libavutil/hwcontext.h>
#include "config.h"
#include "demux/stheader.h"
#include "video/mp_image.h"
#include "video/mp_image_pool.h"
#include "video/hwdec.h"
#define HWDEC_DELAY_QUEUE_COUNT 2
// Maximum number of surfaces the player wants to buffer.
// This number might require adjustment depending on whatever the player does;
// for example, if vo_opengl increases the number of reference surfaces for
// interpolation, this value has to be increased too.
#define HWDEC_EXTRA_SURFACES 6
struct mpv_global;
typedef struct lavc_ctx {
struct mp_log *log;
struct MPOpts *opts;
AVCodecContext *avctx;
AVFrame *pic;
struct vd_lavc_hwdec *hwdec;
AVRational codec_timebase;
enum AVDiscard skip_frame;
bool flushing;
const char *decoder;
bool hwdec_failed;
bool hwdec_notified;
bool intra_only;
int framedrop_flags;
bool hw_probing;
struct demux_packet **sent_packets;
int num_sent_packets;
struct demux_packet **requeue_packets;
int num_requeue_packets;
struct mp_image **delay_queue;
int num_delay_queue;
int max_delay_queue;
// From VO
struct mp_hwdec_devices *hwdec_devs;
// For free use by hwdec implementation
void *hwdec_priv;
// Set by generic hwaccels.
struct mp_hwdec_ctx *hwdec_dev;
bool owns_hwdec_dev;
bool hwdec_request_reinit;
int hwdec_fail_count;
struct mp_image_pool *hwdec_swpool;
AVBufferRef *cached_hw_frames_ctx;
// --- The following fields are protected by dr_lock.
pthread_mutex_t dr_lock;
bool dr_failed;
struct mp_image_pool *dr_pool;
int dr_imgfmt, dr_w, dr_h, dr_stride_align;
} vd_ffmpeg_ctx;
struct vd_lavc_hwdec {
enum hwdec_type type;
// If non-0, get this hwdec type from the VO (for the AVHWDeviceContext).
enum hwdec_type interop_type;
// If true, create a AVHWDeviceContext with default parameters. In this
// case, create_standalone_dev_type is set to a valid value.
bool create_standalone_dev;
enum AVHWDeviceType create_standalone_dev_type;
// If not-0: the IMGFMT_ format that should be accepted in the libavcodec
// get_format callback.
int image_format;
// Always returns a non-hwaccel image format.
bool copying;
// Setting this will queue the given number of frames before returning them
// to the renderer. This can increase efficiency by not blocking on the
// hardware pipeline by reading back immediately after decoding.
int delay_queue;
int (*probe)(struct lavc_ctx *ctx, struct vd_lavc_hwdec *hwdec,
const char *codec);
int (*init)(struct lavc_ctx *ctx);
int (*init_decoder)(struct lavc_ctx *ctx);
void (*uninit)(struct lavc_ctx *ctx);
// For copy hwdecs. If probing is true, don't log errors if unavailable.
// The returned device will be freed with mp_hwdec_ctx->destroy.
struct mp_hwdec_ctx *(*create_dev)(struct mpv_global *global,
struct mp_log *log, bool probing);
// Suffix for libavcodec decoder. If non-NULL, the codec is overridden
// with hwdec_find_decoder.
// Intuitively, this will force the corresponding wrapper decoder.
const char *lavc_suffix;
// Generic hwaccels set AVCodecContext.hw_frames_ctx in get_format().
bool generic_hwaccel;
// If set, AVCodecContext.hw_frames_ctx will be initialized in get_format,
// and pixfmt_map must be non-NULL.
bool set_hwframes;
};
enum {
HWDEC_ERR_NO_CTX = -2,
HWDEC_ERR_NO_CODEC = -3,
HWDEC_ERR_EMULATED = -4, // probing successful, but emulated API detected
};
#endif
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