framehook.h File Reference

#include "libavcodec/avcodec.h"

Go to the source code of this file.

Typedefs
typedef int(	FrameHookConfigure )(void **ctxp, int argc, char *argv[])
typedef FrameHookConfigure *	FrameHookConfigureFn
typedef void(	FrameHookProcess )(void *ctx, struct AVPicture *pict, enum PixelFormat pix_fmt, int width, int height, int64_t pts)
typedef FrameHookProcess *	FrameHookProcessFn
typedef void(	FrameHookRelease )(void *ctx)
typedef FrameHookRelease *	FrameHookReleaseFn
Functions
int	frame_hook_add (int argc, char *argv[])
void	frame_hook_process (struct AVPicture *pict, enum PixelFormat pix_fmt, int width, int height, int64_t pts)
void	frame_hook_release (void)
Variables
FrameHookConfigure	Configure
FrameHookProcess	Process
FrameHookRelease	Release

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Typedef Documentation

typedef int( FrameHookConfigure)(void **ctxp, int argc, char *argv[])

Definition at line 34 of file framehook.h.

typedef FrameHookConfigure* FrameHookConfigureFn

Definition at line 35 of file framehook.h.

typedef void( FrameHookProcess)(void *ctx, struct AVPicture *pict, enum PixelFormat pix_fmt, int width, int height, int64_t pts)

Definition at line 39 of file framehook.h.

typedef FrameHookProcess* FrameHookProcessFn

Definition at line 40 of file framehook.h.

typedef void( FrameHookRelease)(void *ctx)

Definition at line 44 of file framehook.h.

typedef FrameHookRelease* FrameHookReleaseFn

Definition at line 45 of file framehook.h.

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Function Documentation

int frame_hook_add	(	int	argc,
		char *	argv[]
	)

Definition at line 42 of file framehook.c.

References av_log(), AV_LOG_ERROR, av_mallocz(), AVERROR, dlopen, first_hook, and NULL.

{
#ifdef CONFIG_VHOOK
    void *loaded;
    FrameHookEntry *fhe, **fhep;

    if (argc < 1) {
        return ENOENT;
    }

    loaded = dlopen(argv[0], RTLD_NOW);
    if (!loaded) {
        av_log(NULL, AV_LOG_ERROR, "%s\n", dlerror());
        return -1;
    }

    fhe = av_mallocz(sizeof(*fhe));
    if (!fhe) {
        return AVERROR(ENOMEM);
    }

    fhe->Configure = dlsym(loaded, "Configure");
    fhe->Process = dlsym(loaded, "Process");
    fhe->Release = dlsym(loaded, "Release");    /* Optional */

    if (!fhe->Process) {
        av_log(NULL, AV_LOG_ERROR, "Failed to find Process entrypoint in %s\n", argv[0]);
        return AVERROR(ENOENT);
    }

    if (!fhe->Configure && argc > 1) {
        av_log(NULL, AV_LOG_ERROR, "Failed to find Configure entrypoint in %s\n", argv[0]);
        return AVERROR(ENOENT);
    }

    if (argc > 1 || fhe->Configure) {
        if (fhe->Configure(&fhe->ctx, argc, argv)) {
            av_log(NULL, AV_LOG_ERROR, "Failed to Configure %s\n", argv[0]);
            return AVERROR(EINVAL);
        }
    }

    for (fhep = &first_hook; *fhep; fhep = &((*fhep)->next)) {
    }

    *fhep = fhe;

    return 0;
#else
    av_log(NULL, AV_LOG_ERROR, "Video hooking not compiled into this version\n");
    return 1;
#endif
}

void frame_hook_process	(	struct AVPicture *	pict,
		enum PixelFormat	pix_fmt,
		int	width,
		int	height,
		int64_t	pts
	)

Definition at line 96 of file framehook.c.

References FrameHookEntry::ctx, first_hook, FrameHookEntry::next, and FrameHookEntry::Process.

Referenced by pre_process_video_frame().

{
    if (first_hook) {
        FrameHookEntry *fhe;

        for (fhe = first_hook; fhe; fhe = fhe->next) {
            fhe->Process(fhe->ctx, pict, pix_fmt, width, height, pts);
        }
    }
}

void frame_hook_release

(

void

)

Definition at line 107 of file framehook.c.

References av_free(), FrameHookEntry::ctx, first_hook, FrameHookEntry::next, NULL, and FrameHookEntry::Release.

{
    FrameHookEntry *fhe;
    FrameHookEntry *fhenext;

    for (fhe = first_hook; fhe; fhe = fhenext) {
        fhenext = fhe->next;
        if (fhe->Release)
            fhe->Release(fhe->ctx);
        av_free(fhe);
    }

    first_hook = NULL;
}

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Variable Documentation

FrameHookConfigure Configure

Referenced by Configure().

FrameHookProcess Process

Referenced by Process().

FrameHookRelease Release

Referenced by Release().

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