mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
369 lines
11 KiB
369 lines
11 KiB
/* |
|
* 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 |
|
*/ |
|
|
|
#include "dshow_capture.h" |
|
|
|
#include <stddef.h> |
|
#define imemoffset offsetof(DShowPin, imemvtbl) |
|
|
|
DECLARE_QUERYINTERFACE(pin, DShowPin, |
|
{ {&IID_IUnknown,0}, {&IID_IPin,0}, {&IID_IMemInputPin,imemoffset} }) |
|
DECLARE_ADDREF(pin, DShowPin) |
|
DECLARE_RELEASE(pin, DShowPin) |
|
|
|
long ff_dshow_pin_Connect(DShowPin *this, IPin *pin, const AM_MEDIA_TYPE *type) |
|
{ |
|
dshowdebug("ff_dshow_pin_Connect(%p, %p, %p)\n", this, pin, type); |
|
/* Input pins receive connections. */ |
|
return S_FALSE; |
|
} |
|
long ff_dshow_pin_ReceiveConnection(DShowPin *this, IPin *pin, |
|
const AM_MEDIA_TYPE *type) |
|
{ |
|
enum dshowDeviceType devtype = this->filter->type; |
|
dshowdebug("ff_dshow_pin_ReceiveConnection(%p)\n", this); |
|
|
|
if (!pin) |
|
return E_POINTER; |
|
if (this->connectedto) |
|
return VFW_E_ALREADY_CONNECTED; |
|
|
|
ff_print_AM_MEDIA_TYPE(type); |
|
if (devtype == VideoDevice) { |
|
if (!IsEqualGUID(&type->majortype, &MEDIATYPE_Video)) |
|
return VFW_E_TYPE_NOT_ACCEPTED; |
|
} else { |
|
if (!IsEqualGUID(&type->majortype, &MEDIATYPE_Audio)) |
|
return VFW_E_TYPE_NOT_ACCEPTED; |
|
} |
|
|
|
IPin_AddRef(pin); |
|
this->connectedto = pin; |
|
|
|
ff_copy_dshow_media_type(&this->type, type); |
|
|
|
return S_OK; |
|
} |
|
long ff_dshow_pin_Disconnect(DShowPin *this) |
|
{ |
|
dshowdebug("ff_dshow_pin_Disconnect(%p)\n", this); |
|
|
|
if (this->filter->state != State_Stopped) |
|
return VFW_E_NOT_STOPPED; |
|
if (!this->connectedto) |
|
return S_FALSE; |
|
IPin_Release(this->connectedto); |
|
this->connectedto = NULL; |
|
|
|
return S_OK; |
|
} |
|
long ff_dshow_pin_ConnectedTo(DShowPin *this, IPin **pin) |
|
{ |
|
dshowdebug("ff_dshow_pin_ConnectedTo(%p)\n", this); |
|
|
|
if (!pin) |
|
return E_POINTER; |
|
if (!this->connectedto) |
|
return VFW_E_NOT_CONNECTED; |
|
IPin_AddRef(this->connectedto); |
|
*pin = this->connectedto; |
|
|
|
return S_OK; |
|
} |
|
long ff_dshow_pin_ConnectionMediaType(DShowPin *this, AM_MEDIA_TYPE *type) |
|
{ |
|
dshowdebug("ff_dshow_pin_ConnectionMediaType(%p)\n", this); |
|
|
|
if (!type) |
|
return E_POINTER; |
|
if (!this->connectedto) |
|
return VFW_E_NOT_CONNECTED; |
|
|
|
return ff_copy_dshow_media_type(type, &this->type); |
|
} |
|
long ff_dshow_pin_QueryPinInfo(DShowPin *this, PIN_INFO *info) |
|
{ |
|
dshowdebug("ff_dshow_pin_QueryPinInfo(%p)\n", this); |
|
|
|
if (!info) |
|
return E_POINTER; |
|
|
|
if (this->filter) |
|
ff_dshow_filter_AddRef(this->filter); |
|
|
|
info->pFilter = (IBaseFilter *) this->filter; |
|
info->dir = PINDIR_INPUT; |
|
wcscpy(info->achName, L"Capture"); |
|
|
|
return S_OK; |
|
} |
|
long ff_dshow_pin_QueryDirection(DShowPin *this, PIN_DIRECTION *dir) |
|
{ |
|
dshowdebug("ff_dshow_pin_QueryDirection(%p)\n", this); |
|
if (!dir) |
|
return E_POINTER; |
|
*dir = PINDIR_INPUT; |
|
return S_OK; |
|
} |
|
long ff_dshow_pin_QueryId(DShowPin *this, wchar_t **id) |
|
{ |
|
dshowdebug("ff_dshow_pin_QueryId(%p)\n", this); |
|
|
|
if (!id) |
|
return E_POINTER; |
|
|
|
*id = wcsdup(L"libAV Pin"); |
|
|
|
return S_OK; |
|
} |
|
long ff_dshow_pin_QueryAccept(DShowPin *this, const AM_MEDIA_TYPE *type) |
|
{ |
|
dshowdebug("ff_dshow_pin_QueryAccept(%p)\n", this); |
|
return S_FALSE; |
|
} |
|
long ff_dshow_pin_EnumMediaTypes(DShowPin *this, IEnumMediaTypes **enumtypes) |
|
{ |
|
const AM_MEDIA_TYPE *type = NULL; |
|
DShowEnumMediaTypes *new; |
|
dshowdebug("ff_dshow_pin_EnumMediaTypes(%p)\n", this); |
|
|
|
if (!enumtypes) |
|
return E_POINTER; |
|
new = ff_dshow_enummediatypes_Create(type); |
|
if (!new) |
|
return E_OUTOFMEMORY; |
|
|
|
*enumtypes = (IEnumMediaTypes *) new; |
|
return S_OK; |
|
} |
|
long ff_dshow_pin_QueryInternalConnections(DShowPin *this, IPin **pin, |
|
unsigned long *npin) |
|
{ |
|
dshowdebug("ff_dshow_pin_QueryInternalConnections(%p)\n", this); |
|
return E_NOTIMPL; |
|
} |
|
long ff_dshow_pin_EndOfStream(DShowPin *this) |
|
{ |
|
dshowdebug("ff_dshow_pin_EndOfStream(%p)\n", this); |
|
/* I don't care. */ |
|
return S_OK; |
|
} |
|
long ff_dshow_pin_BeginFlush(DShowPin *this) |
|
{ |
|
dshowdebug("ff_dshow_pin_BeginFlush(%p)\n", this); |
|
/* I don't care. */ |
|
return S_OK; |
|
} |
|
long ff_dshow_pin_EndFlush(DShowPin *this) |
|
{ |
|
dshowdebug("ff_dshow_pin_EndFlush(%p)\n", this); |
|
/* I don't care. */ |
|
return S_OK; |
|
} |
|
long ff_dshow_pin_NewSegment(DShowPin *this, REFERENCE_TIME start, REFERENCE_TIME stop, |
|
double rate) |
|
{ |
|
dshowdebug("ff_dshow_pin_NewSegment(%p)\n", this); |
|
/* I don't care. */ |
|
return S_OK; |
|
} |
|
|
|
static int ff_dshow_pin_Setup(DShowPin *this, DShowFilter *filter) |
|
{ |
|
IPinVtbl *vtbl = this->vtbl; |
|
IMemInputPinVtbl *imemvtbl; |
|
|
|
if (!filter) |
|
return 0; |
|
|
|
imemvtbl = av_malloc(sizeof(IMemInputPinVtbl)); |
|
if (!imemvtbl) |
|
return 0; |
|
|
|
SETVTBL(imemvtbl, meminputpin, QueryInterface); |
|
SETVTBL(imemvtbl, meminputpin, AddRef); |
|
SETVTBL(imemvtbl, meminputpin, Release); |
|
SETVTBL(imemvtbl, meminputpin, GetAllocator); |
|
SETVTBL(imemvtbl, meminputpin, NotifyAllocator); |
|
SETVTBL(imemvtbl, meminputpin, GetAllocatorRequirements); |
|
SETVTBL(imemvtbl, meminputpin, Receive); |
|
SETVTBL(imemvtbl, meminputpin, ReceiveMultiple); |
|
SETVTBL(imemvtbl, meminputpin, ReceiveCanBlock); |
|
|
|
this->imemvtbl = imemvtbl; |
|
|
|
SETVTBL(vtbl, pin, QueryInterface); |
|
SETVTBL(vtbl, pin, AddRef); |
|
SETVTBL(vtbl, pin, Release); |
|
SETVTBL(vtbl, pin, Connect); |
|
SETVTBL(vtbl, pin, ReceiveConnection); |
|
SETVTBL(vtbl, pin, Disconnect); |
|
SETVTBL(vtbl, pin, ConnectedTo); |
|
SETVTBL(vtbl, pin, ConnectionMediaType); |
|
SETVTBL(vtbl, pin, QueryPinInfo); |
|
SETVTBL(vtbl, pin, QueryDirection); |
|
SETVTBL(vtbl, pin, QueryId); |
|
SETVTBL(vtbl, pin, QueryAccept); |
|
SETVTBL(vtbl, pin, EnumMediaTypes); |
|
SETVTBL(vtbl, pin, QueryInternalConnections); |
|
SETVTBL(vtbl, pin, EndOfStream); |
|
SETVTBL(vtbl, pin, BeginFlush); |
|
SETVTBL(vtbl, pin, EndFlush); |
|
SETVTBL(vtbl, pin, NewSegment); |
|
|
|
this->filter = filter; |
|
|
|
return 1; |
|
} |
|
|
|
static void ff_dshow_pin_Free(DShowPin *this) |
|
{ |
|
if (!this) |
|
return; |
|
av_freep(&this->imemvtbl); |
|
if (this->type.pbFormat) { |
|
CoTaskMemFree(this->type.pbFormat); |
|
this->type.pbFormat = NULL; |
|
} |
|
} |
|
DECLARE_CREATE(pin, DShowPin, ff_dshow_pin_Setup(this, filter), DShowFilter *filter) |
|
DECLARE_DESTROY(pin, DShowPin, ff_dshow_pin_Free) |
|
|
|
/***************************************************************************** |
|
* DShowMemInputPin |
|
****************************************************************************/ |
|
long ff_dshow_meminputpin_QueryInterface(DShowMemInputPin *this, const GUID *riid, |
|
void **ppvObject) |
|
{ |
|
DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset); |
|
dshowdebug("ff_dshow_meminputpin_QueryInterface(%p)\n", this); |
|
return ff_dshow_pin_QueryInterface(pin, riid, ppvObject); |
|
} |
|
unsigned long ff_dshow_meminputpin_AddRef(DShowMemInputPin *this) |
|
{ |
|
DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset); |
|
dshowdebug("ff_dshow_meminputpin_AddRef(%p)\n", this); |
|
return ff_dshow_pin_AddRef(pin); |
|
} |
|
unsigned long ff_dshow_meminputpin_Release(DShowMemInputPin *this) |
|
{ |
|
DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset); |
|
dshowdebug("ff_dshow_meminputpin_Release(%p)\n", this); |
|
return ff_dshow_pin_Release(pin); |
|
} |
|
long ff_dshow_meminputpin_GetAllocator(DShowMemInputPin *this, IMemAllocator **alloc) |
|
{ |
|
dshowdebug("ff_dshow_meminputpin_GetAllocator(%p)\n", this); |
|
return VFW_E_NO_ALLOCATOR; |
|
} |
|
long ff_dshow_meminputpin_NotifyAllocator(DShowMemInputPin *this, IMemAllocator *alloc, |
|
BOOL rdwr) |
|
{ |
|
dshowdebug("ff_dshow_meminputpin_NotifyAllocator(%p)\n", this); |
|
return S_OK; |
|
} |
|
long ff_dshow_meminputpin_GetAllocatorRequirements(DShowMemInputPin *this, |
|
ALLOCATOR_PROPERTIES *props) |
|
{ |
|
dshowdebug("ff_dshow_meminputpin_GetAllocatorRequirements(%p)\n", this); |
|
return E_NOTIMPL; |
|
} |
|
long ff_dshow_meminputpin_Receive(DShowMemInputPin *this, IMediaSample *sample) |
|
{ |
|
DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset); |
|
enum dshowDeviceType devtype = pin->filter->type; |
|
void *priv_data; |
|
AVFormatContext *s; |
|
uint8_t *buf; |
|
int buf_size; /* todo should be a long? */ |
|
int index; |
|
int64_t curtime; |
|
int64_t orig_curtime; |
|
int64_t graphtime; |
|
const char *devtypename = (devtype == VideoDevice) ? "video" : "audio"; |
|
IReferenceClock *clock = pin->filter->clock; |
|
int64_t dummy; |
|
struct dshow_ctx *ctx; |
|
|
|
|
|
dshowdebug("ff_dshow_meminputpin_Receive(%p)\n", this); |
|
|
|
if (!sample) |
|
return E_POINTER; |
|
|
|
IMediaSample_GetTime(sample, &orig_curtime, &dummy); |
|
orig_curtime += pin->filter->start_time; |
|
IReferenceClock_GetTime(clock, &graphtime); |
|
if (devtype == VideoDevice) { |
|
/* PTS from video devices is unreliable. */ |
|
IReferenceClock_GetTime(clock, &curtime); |
|
} else { |
|
IMediaSample_GetTime(sample, &curtime, &dummy); |
|
if(curtime > 400000000000000000LL) { |
|
/* initial frames sometimes start < 0 (shown as a very large number here, |
|
like 437650244077016960 which FFmpeg doesn't like. |
|
TODO figure out math. For now just drop them. */ |
|
av_log(NULL, AV_LOG_DEBUG, |
|
"dshow dropping initial (or ending) audio frame with odd PTS too high %"PRId64"\n", curtime); |
|
return S_OK; |
|
} |
|
curtime += pin->filter->start_time; |
|
} |
|
|
|
buf_size = IMediaSample_GetActualDataLength(sample); |
|
IMediaSample_GetPointer(sample, &buf); |
|
priv_data = pin->filter->priv_data; |
|
s = priv_data; |
|
ctx = s->priv_data; |
|
index = pin->filter->stream_index; |
|
|
|
av_log(NULL, AV_LOG_VERBOSE, "dshow passing through packet of type %s size %8d " |
|
"timestamp %"PRId64" orig timestamp %"PRId64" graph timestamp %"PRId64" diff %"PRId64" %s\n", |
|
devtypename, buf_size, curtime, orig_curtime, graphtime, graphtime - orig_curtime, ctx->device_name[devtype]); |
|
pin->filter->callback(priv_data, index, buf, buf_size, curtime, devtype); |
|
|
|
return S_OK; |
|
} |
|
long ff_dshow_meminputpin_ReceiveMultiple(DShowMemInputPin *this, |
|
IMediaSample **samples, long n, long *nproc) |
|
{ |
|
int i; |
|
dshowdebug("ff_dshow_meminputpin_ReceiveMultiple(%p)\n", this); |
|
|
|
for (i = 0; i < n; i++) |
|
ff_dshow_meminputpin_Receive(this, samples[i]); |
|
|
|
*nproc = n; |
|
return S_OK; |
|
} |
|
long ff_dshow_meminputpin_ReceiveCanBlock(DShowMemInputPin *this) |
|
{ |
|
dshowdebug("ff_dshow_meminputpin_ReceiveCanBlock(%p)\n", this); |
|
/* I swear I will not block. */ |
|
return S_FALSE; |
|
} |
|
|
|
void ff_dshow_meminputpin_Destroy(DShowMemInputPin *this) |
|
{ |
|
DShowPin *pin = (DShowPin *) ((uint8_t *) this - imemoffset); |
|
dshowdebug("ff_dshow_meminputpin_Destroy(%p)\n", this); |
|
ff_dshow_pin_Destroy(pin); |
|
}
|
|
|