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FFmpeg/libavdevice/dshow_capture.h
Andreas Rheinhardt d61240f8c9 avcodec/packet_internal: Add proper PacketList struct 
Up until now, we had a PacketList structure which is actually
a PacketListEntry; a proper PacketList did not exist
and all the related functions just passed pointers to pointers
to the head and tail elements around. All these pointers were
actually consecutive elements of their containing structs,
i.e. the users already treated them as if they were a struct.

So add a proper PacketList struct and rename the current PacketList
to PacketListEntry; also make the functions use this structure
instead of the pair of pointers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-01-04 13:16:50 +01:00

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/*
* DirectShow capture interface
* Copyright (c) 2010 Ramiro Polla
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVDEVICE_DSHOW_CAPTURE_H
#define AVDEVICE_DSHOW_CAPTURE_H
#define DSHOWDEBUG 0
#include "avdevice.h"
#define COBJMACROS
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#define NO_DSHOW_STRSAFE
#include <dshow.h>
#include <dvdmedia.h>
#include "libavcodec/internal.h"
#include "libavcodec/packet_internal.h"
/* EC_DEVICE_LOST is not defined in MinGW dshow headers. */
#ifndef EC_DEVICE_LOST
#define EC_DEVICE_LOST 0x1f
#endif
long ff_copy_dshow_media_type(AM_MEDIA_TYPE *dst, const AM_MEDIA_TYPE *src);
void ff_print_VIDEO_STREAM_CONFIG_CAPS(const VIDEO_STREAM_CONFIG_CAPS *caps);
void ff_print_AUDIO_STREAM_CONFIG_CAPS(const AUDIO_STREAM_CONFIG_CAPS *caps);
void ff_print_AM_MEDIA_TYPE(const AM_MEDIA_TYPE *type);
void ff_printGUID(const GUID *g);
extern const AVClass *ff_dshow_context_class_ptr;
#define dshowdebug(...) ff_dlog(&ff_dshow_context_class_ptr, __VA_ARGS__)
static inline void nothing(void *foo)
{
}
struct GUIDoffset {
const GUID *iid;
int offset;
};
enum dshowDeviceType {
VideoDevice = 0,
AudioDevice = 1,
};
enum dshowSourceFilterType {
VideoSourceDevice = 0,
AudioSourceDevice = 1,
};
#define DECLARE_QUERYINTERFACE(prefix, class, ...) \
long WINAPI \
ff_dshow_##prefix##_QueryInterface(class *this, const GUID *riid, void **ppvObject) \
{ \
struct GUIDoffset ifaces[] = __VA_ARGS__; \
int i; \
dshowdebug("ff_dshow_"AV_STRINGIFY(prefix)"_QueryInterface(%p, %p, %p)\n", this, riid, ppvObject); \
ff_printGUID(riid); \
if (!ppvObject) \
return E_POINTER; \
for (i = 0; i < sizeof(ifaces)/sizeof(ifaces[0]); i++) { \
if (IsEqualGUID(riid, ifaces[i].iid)) { \
void *obj = (void *) ((uint8_t *) this + ifaces[i].offset); \
ff_dshow_##prefix##_AddRef(this); \
dshowdebug("\tfound %d with offset %d\n", i, ifaces[i].offset); \
*ppvObject = (void *) obj; \
return S_OK; \
} \
} \
dshowdebug("\tE_NOINTERFACE\n"); \
*ppvObject = NULL; \
return E_NOINTERFACE; \
}
#define DECLARE_ADDREF(prefix, class) \
unsigned long WINAPI \
ff_dshow_##prefix##_AddRef(class *this) \
{ \
dshowdebug("ff_dshow_"AV_STRINGIFY(prefix)"_AddRef(%p)\t%ld\n", this, this->ref+1); \
return InterlockedIncrement(&this->ref); \
}
#define DECLARE_RELEASE(prefix, class) \
unsigned long WINAPI \
ff_dshow_##prefix##_Release(class *this) \
{ \
long ref = InterlockedDecrement(&this->ref); \
dshowdebug("ff_dshow_"AV_STRINGIFY(prefix)"_Release(%p)\t%ld\n", this, ref); \
if (!ref) \
ff_dshow_##prefix##_Destroy(this); \
return ref; \
}
#define DECLARE_DESTROY(prefix, class, func) \
void ff_dshow_##prefix##_Destroy(class *this) \
{ \
dshowdebug("ff_dshow_"AV_STRINGIFY(prefix)"_Destroy(%p)\n", this); \
func(this); \
if (this) { \
if (this->vtbl) \
CoTaskMemFree(this->vtbl); \
CoTaskMemFree(this); \
} \
}
#define DECLARE_CREATE(prefix, class, setup, ...) \
class *ff_dshow_##prefix##_Create(__VA_ARGS__) \
{ \
class *this = CoTaskMemAlloc(sizeof(class)); \
void *vtbl = CoTaskMemAlloc(sizeof(*this->vtbl)); \
dshowdebug("ff_dshow_"AV_STRINGIFY(prefix)"_Create(%p)\n", this); \
if (!this || !vtbl) \
goto fail; \
ZeroMemory(this, sizeof(class)); \
ZeroMemory(vtbl, sizeof(*this->vtbl)); \
this->ref = 1; \
this->vtbl = vtbl; \
if (!setup) \
goto fail; \
dshowdebug("created ff_dshow_"AV_STRINGIFY(prefix)" %p\n", this); \
return this; \
fail: \
ff_dshow_##prefix##_Destroy(this); \
dshowdebug("could not create ff_dshow_"AV_STRINGIFY(prefix)"\n"); \
return NULL; \
}
#define SETVTBL(vtbl, prefix, fn) \
do { (vtbl)->fn = (void *) ff_dshow_##prefix##_##fn; } while(0)
/*****************************************************************************
* Forward Declarations
****************************************************************************/
typedef struct DShowPin DShowPin;
typedef struct DShowMemInputPin DShowMemInputPin;
typedef struct DShowEnumPins DShowEnumPins;
typedef struct DShowEnumMediaTypes DShowEnumMediaTypes;
typedef struct DShowFilter DShowFilter;
/*****************************************************************************
* DShowPin
****************************************************************************/
struct DShowPin {
IPinVtbl *vtbl;
long ref;
DShowFilter *filter;
IPin *connectedto;
AM_MEDIA_TYPE type;
IMemInputPinVtbl *imemvtbl;
};
long WINAPI ff_dshow_pin_QueryInterface (DShowPin *, const GUID *, void **);
unsigned long WINAPI ff_dshow_pin_AddRef (DShowPin *);
unsigned long WINAPI ff_dshow_pin_Release (DShowPin *);
long WINAPI ff_dshow_pin_Connect (DShowPin *, IPin *, const AM_MEDIA_TYPE *);
long WINAPI ff_dshow_pin_ReceiveConnection (DShowPin *, IPin *, const AM_MEDIA_TYPE *);
long WINAPI ff_dshow_pin_Disconnect (DShowPin *);
long WINAPI ff_dshow_pin_ConnectedTo (DShowPin *, IPin **);
long WINAPI ff_dshow_pin_ConnectionMediaType (DShowPin *, AM_MEDIA_TYPE *);
long WINAPI ff_dshow_pin_QueryPinInfo (DShowPin *, PIN_INFO *);
long WINAPI ff_dshow_pin_QueryDirection (DShowPin *, PIN_DIRECTION *);
long WINAPI ff_dshow_pin_QueryId (DShowPin *, wchar_t **);
long WINAPI ff_dshow_pin_QueryAccept (DShowPin *, const AM_MEDIA_TYPE *);
long WINAPI ff_dshow_pin_EnumMediaTypes (DShowPin *, IEnumMediaTypes **);
long WINAPI ff_dshow_pin_QueryInternalConnections(DShowPin *, IPin **, unsigned long *);
long WINAPI ff_dshow_pin_EndOfStream (DShowPin *);
long WINAPI ff_dshow_pin_BeginFlush (DShowPin *);
long WINAPI ff_dshow_pin_EndFlush (DShowPin *);
long WINAPI ff_dshow_pin_NewSegment (DShowPin *, REFERENCE_TIME, REFERENCE_TIME, double);
long WINAPI ff_dshow_meminputpin_QueryInterface (DShowMemInputPin *, const GUID *, void **);
unsigned long WINAPI ff_dshow_meminputpin_AddRef (DShowMemInputPin *);
unsigned long WINAPI ff_dshow_meminputpin_Release (DShowMemInputPin *);
long WINAPI ff_dshow_meminputpin_GetAllocator (DShowMemInputPin *, IMemAllocator **);
long WINAPI ff_dshow_meminputpin_NotifyAllocator (DShowMemInputPin *, IMemAllocator *, BOOL);
long WINAPI ff_dshow_meminputpin_GetAllocatorRequirements(DShowMemInputPin *, ALLOCATOR_PROPERTIES *);
long WINAPI ff_dshow_meminputpin_Receive (DShowMemInputPin *, IMediaSample *);
long WINAPI ff_dshow_meminputpin_ReceiveMultiple (DShowMemInputPin *, IMediaSample **, long, long *);
long WINAPI ff_dshow_meminputpin_ReceiveCanBlock (DShowMemInputPin *);
void ff_dshow_pin_Destroy(DShowPin *);
DShowPin *ff_dshow_pin_Create (DShowFilter *filter);
void ff_dshow_meminputpin_Destroy(DShowMemInputPin *);
/*****************************************************************************
* DShowEnumPins
****************************************************************************/
struct DShowEnumPins {
IEnumPinsVtbl *vtbl;
long ref;
int pos;
DShowPin *pin;
DShowFilter *filter;
};
long WINAPI ff_dshow_enumpins_QueryInterface(DShowEnumPins *, const GUID *, void **);
unsigned long WINAPI ff_dshow_enumpins_AddRef (DShowEnumPins *);
unsigned long WINAPI ff_dshow_enumpins_Release (DShowEnumPins *);
long WINAPI ff_dshow_enumpins_Next (DShowEnumPins *, unsigned long, IPin **, unsigned long *);
long WINAPI ff_dshow_enumpins_Skip (DShowEnumPins *, unsigned long);
long WINAPI ff_dshow_enumpins_Reset (DShowEnumPins *);
long WINAPI ff_dshow_enumpins_Clone (DShowEnumPins *, DShowEnumPins **);
void ff_dshow_enumpins_Destroy(DShowEnumPins *);
DShowEnumPins *ff_dshow_enumpins_Create (DShowPin *pin, DShowFilter *filter);
/*****************************************************************************
* DShowEnumMediaTypes
****************************************************************************/
struct DShowEnumMediaTypes {
IEnumMediaTypesVtbl *vtbl;
long ref;
int pos;
AM_MEDIA_TYPE type;
};
long WINAPI ff_dshow_enummediatypes_QueryInterface(DShowEnumMediaTypes *, const GUID *, void **);
unsigned long WINAPI ff_dshow_enummediatypes_AddRef (DShowEnumMediaTypes *);
unsigned long WINAPI ff_dshow_enummediatypes_Release (DShowEnumMediaTypes *);
long WINAPI ff_dshow_enummediatypes_Next (DShowEnumMediaTypes *, unsigned long, AM_MEDIA_TYPE **, unsigned long *);
long WINAPI ff_dshow_enummediatypes_Skip (DShowEnumMediaTypes *, unsigned long);
long WINAPI ff_dshow_enummediatypes_Reset (DShowEnumMediaTypes *);
long WINAPI ff_dshow_enummediatypes_Clone (DShowEnumMediaTypes *, DShowEnumMediaTypes **);
void ff_dshow_enummediatypes_Destroy(DShowEnumMediaTypes *);
DShowEnumMediaTypes *ff_dshow_enummediatypes_Create(const AM_MEDIA_TYPE *type);
/*****************************************************************************
* DShowFilter
****************************************************************************/
struct DShowFilter {
IBaseFilterVtbl *vtbl;
long ref;
const wchar_t *name;
DShowPin *pin;
FILTER_INFO info;
FILTER_STATE state;
IReferenceClock *clock;
enum dshowDeviceType type;
void *priv_data;
int stream_index;
int64_t start_time;
void (*callback)(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time, enum dshowDeviceType type);
};
long WINAPI ff_dshow_filter_QueryInterface (DShowFilter *, const GUID *, void **);
unsigned long WINAPI ff_dshow_filter_AddRef (DShowFilter *);
unsigned long WINAPI ff_dshow_filter_Release (DShowFilter *);
long WINAPI ff_dshow_filter_GetClassID (DShowFilter *, CLSID *);
long WINAPI ff_dshow_filter_Stop (DShowFilter *);
long WINAPI ff_dshow_filter_Pause (DShowFilter *);
long WINAPI ff_dshow_filter_Run (DShowFilter *, REFERENCE_TIME);
long WINAPI ff_dshow_filter_GetState (DShowFilter *, DWORD, FILTER_STATE *);
long WINAPI ff_dshow_filter_SetSyncSource (DShowFilter *, IReferenceClock *);
long WINAPI ff_dshow_filter_GetSyncSource (DShowFilter *, IReferenceClock **);
long WINAPI ff_dshow_filter_EnumPins (DShowFilter *, IEnumPins **);
long WINAPI ff_dshow_filter_FindPin (DShowFilter *, const wchar_t *, IPin **);
long WINAPI ff_dshow_filter_QueryFilterInfo(DShowFilter *, FILTER_INFO *);
long WINAPI ff_dshow_filter_JoinFilterGraph(DShowFilter *, IFilterGraph *, const wchar_t *);
long WINAPI ff_dshow_filter_QueryVendorInfo(DShowFilter *, wchar_t **);
void ff_dshow_filter_Destroy(DShowFilter *);
DShowFilter *ff_dshow_filter_Create (void *, void *, enum dshowDeviceType);
/*****************************************************************************
* dshow_ctx
****************************************************************************/
struct dshow_ctx {
const AVClass *class;
IGraphBuilder *graph;
char *device_name[2];
char *device_unique_name[2];
int video_device_number;
int audio_device_number;
int list_options;
int list_devices;
int audio_buffer_size;
int crossbar_video_input_pin_number;
int crossbar_audio_input_pin_number;
char *video_pin_name;
char *audio_pin_name;
int show_video_device_dialog;
int show_audio_device_dialog;
int show_video_crossbar_connection_dialog;
int show_audio_crossbar_connection_dialog;
int show_analog_tv_tuner_dialog;
int show_analog_tv_tuner_audio_dialog;
char *audio_filter_load_file;
char *audio_filter_save_file;
char *video_filter_load_file;
char *video_filter_save_file;
int use_video_device_timestamps;
IBaseFilter *device_filter[2];
IPin *device_pin[2];
DShowFilter *capture_filter[2];
DShowPin *capture_pin[2];
HANDLE mutex;
HANDLE event[2]; /* event[0] is set by DirectShow
* event[1] is set by callback() */
PacketListEntry *pktl;
int eof;
int64_t curbufsize[2];
unsigned int video_frame_num;
IMediaControl *control;
IMediaEvent *media_event;
enum AVPixelFormat pixel_format;
enum AVCodecID video_codec_id;
char *framerate;
int requested_width;
int requested_height;
AVRational requested_framerate;
int sample_rate;
int sample_size;
int channels;
};
/*****************************************************************************
* CrossBar
****************************************************************************/
HRESULT ff_dshow_try_setup_crossbar_options(ICaptureGraphBuilder2 *graph_builder2,
IBaseFilter *device_filter, enum dshowDeviceType devtype, AVFormatContext *avctx);
void ff_dshow_show_filter_properties(IBaseFilter *pFilter, AVFormatContext *avctx);
#endif /* AVDEVICE_DSHOW_CAPTURE_H */
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