diff options
Diffstat (limited to 'libavdevice/dshow.c')
| -rw-r--r-- | libavdevice/dshow.c | 1330 |
1 files changed, 1330 insertions, 0 deletions
diff --git a/libavdevice/dshow.c b/libavdevice/dshow.c new file mode 100644 index 0000000000..f2453e6114 --- /dev/null +++ b/libavdevice/dshow.c @@ -0,0 +1,1330 @@ +/* + * 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 "libavutil/parseutils.h" +#include "libavutil/pixdesc.h" +#include "libavutil/opt.h" +#include "libavformat/internal.h" +#include "libavformat/riff.h" +#include "avdevice.h" +#include "libavcodec/raw.h" +#include "objidl.h" +#include "shlwapi.h" + + +static enum AVPixelFormat dshow_pixfmt(DWORD biCompression, WORD biBitCount) +{ + switch(biCompression) { + case BI_BITFIELDS: + case BI_RGB: + switch(biBitCount) { /* 1-8 are untested */ + case 1: + return AV_PIX_FMT_MONOWHITE; + case 4: + return AV_PIX_FMT_RGB4; + case 8: + return AV_PIX_FMT_RGB8; + case 16: + return AV_PIX_FMT_RGB555; + case 24: + return AV_PIX_FMT_BGR24; + case 32: + return AV_PIX_FMT_0RGB32; + } + } + return avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), biCompression); // all others +} + +static int +dshow_read_close(AVFormatContext *s) +{ + struct dshow_ctx *ctx = s->priv_data; + AVPacketList *pktl; + + if (ctx->control) { + IMediaControl_Stop(ctx->control); + IMediaControl_Release(ctx->control); + } + + if (ctx->media_event) + IMediaEvent_Release(ctx->media_event); + + if (ctx->graph) { + IEnumFilters *fenum; + int r; + r = IGraphBuilder_EnumFilters(ctx->graph, &fenum); + if (r == S_OK) { + IBaseFilter *f; + IEnumFilters_Reset(fenum); + while (IEnumFilters_Next(fenum, 1, &f, NULL) == S_OK) { + if (IGraphBuilder_RemoveFilter(ctx->graph, f) == S_OK) + IEnumFilters_Reset(fenum); /* When a filter is removed, + * the list must be reset. */ + IBaseFilter_Release(f); + } + IEnumFilters_Release(fenum); + } + IGraphBuilder_Release(ctx->graph); + } + + if (ctx->capture_pin[VideoDevice]) + libAVPin_Release(ctx->capture_pin[VideoDevice]); + if (ctx->capture_pin[AudioDevice]) + libAVPin_Release(ctx->capture_pin[AudioDevice]); + if (ctx->capture_filter[VideoDevice]) + libAVFilter_Release(ctx->capture_filter[VideoDevice]); + if (ctx->capture_filter[AudioDevice]) + libAVFilter_Release(ctx->capture_filter[AudioDevice]); + + if (ctx->device_pin[VideoDevice]) + IPin_Release(ctx->device_pin[VideoDevice]); + if (ctx->device_pin[AudioDevice]) + IPin_Release(ctx->device_pin[AudioDevice]); + if (ctx->device_filter[VideoDevice]) + IBaseFilter_Release(ctx->device_filter[VideoDevice]); + if (ctx->device_filter[AudioDevice]) + IBaseFilter_Release(ctx->device_filter[AudioDevice]); + + av_freep(&ctx->device_name[0]); + av_freep(&ctx->device_name[1]); + av_freep(&ctx->device_unique_name[0]); + av_freep(&ctx->device_unique_name[1]); + + if(ctx->mutex) + CloseHandle(ctx->mutex); + if(ctx->event[0]) + CloseHandle(ctx->event[0]); + if(ctx->event[1]) + CloseHandle(ctx->event[1]); + + pktl = ctx->pktl; + while (pktl) { + AVPacketList *next = pktl->next; + av_packet_unref(&pktl->pkt); + av_free(pktl); + pktl = next; + } + + CoUninitialize(); + + return 0; +} + +static char *dup_wchar_to_utf8(wchar_t *w) +{ + char *s = NULL; + int l = WideCharToMultiByte(CP_UTF8, 0, w, -1, 0, 0, 0, 0); + s = av_malloc(l); + if (s) + WideCharToMultiByte(CP_UTF8, 0, w, -1, s, l, 0, 0); + return s; +} + +static int shall_we_drop(AVFormatContext *s, int index, enum dshowDeviceType devtype) +{ + struct dshow_ctx *ctx = s->priv_data; + static const uint8_t dropscore[] = {62, 75, 87, 100}; + const int ndropscores = FF_ARRAY_ELEMS(dropscore); + unsigned int buffer_fullness = (ctx->curbufsize[index]*100)/s->max_picture_buffer; + const char *devtypename = (devtype == VideoDevice) ? "video" : "audio"; + + if(dropscore[++ctx->video_frame_num%ndropscores] <= buffer_fullness) { + av_log(s, AV_LOG_ERROR, + "real-time buffer [%s] [%s input] too full or near too full (%d%% of size: %d [rtbufsize parameter])! frame dropped!\n", + ctx->device_name[devtype], devtypename, buffer_fullness, s->max_picture_buffer); + return 1; + } + + return 0; +} + +static void +callback(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time, enum dshowDeviceType devtype) +{ + AVFormatContext *s = priv_data; + struct dshow_ctx *ctx = s->priv_data; + AVPacketList **ppktl, *pktl_next; + +// dump_videohdr(s, vdhdr); + + WaitForSingleObject(ctx->mutex, INFINITE); + + if(shall_we_drop(s, index, devtype)) + goto fail; + + pktl_next = av_mallocz(sizeof(AVPacketList)); + if(!pktl_next) + goto fail; + + if(av_new_packet(&pktl_next->pkt, buf_size) < 0) { + av_free(pktl_next); + goto fail; + } + + pktl_next->pkt.stream_index = index; + pktl_next->pkt.pts = time; + memcpy(pktl_next->pkt.data, buf, buf_size); + + for(ppktl = &ctx->pktl ; *ppktl ; ppktl = &(*ppktl)->next); + *ppktl = pktl_next; + ctx->curbufsize[index] += buf_size; + + SetEvent(ctx->event[1]); + ReleaseMutex(ctx->mutex); + + return; +fail: + ReleaseMutex(ctx->mutex); + return; +} + +/** + * Cycle through available devices using the device enumerator devenum, + * retrieve the device with type specified by devtype and return the + * pointer to the object found in *pfilter. + * If pfilter is NULL, list all device names. + */ +static int +dshow_cycle_devices(AVFormatContext *avctx, ICreateDevEnum *devenum, + enum dshowDeviceType devtype, enum dshowSourceFilterType sourcetype, + IBaseFilter **pfilter, char **device_unique_name) +{ + struct dshow_ctx *ctx = avctx->priv_data; + IBaseFilter *device_filter = NULL; + IEnumMoniker *classenum = NULL; + IMoniker *m = NULL; + const char *device_name = ctx->device_name[devtype]; + int skip = (devtype == VideoDevice) ? ctx->video_device_number + : ctx->audio_device_number; + int r; + + const GUID *device_guid[2] = { &CLSID_VideoInputDeviceCategory, + &CLSID_AudioInputDeviceCategory }; + const char *devtypename = (devtype == VideoDevice) ? "video" : "audio only"; + const char *sourcetypename = (sourcetype == VideoSourceDevice) ? "video" : "audio"; + + r = ICreateDevEnum_CreateClassEnumerator(devenum, device_guid[sourcetype], + (IEnumMoniker **) &classenum, 0); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not enumerate %s devices (or none found).\n", + devtypename); + return AVERROR(EIO); + } + + while (!device_filter && IEnumMoniker_Next(classenum, 1, &m, NULL) == S_OK) { + IPropertyBag *bag = NULL; + char *friendly_name = NULL; + char *unique_name = NULL; + VARIANT var; + IBindCtx *bind_ctx = NULL; + LPOLESTR olestr = NULL; + LPMALLOC co_malloc = NULL; + int i; + + r = CoGetMalloc(1, &co_malloc); + if (r != S_OK) + goto fail1; + r = CreateBindCtx(0, &bind_ctx); + if (r != S_OK) + goto fail1; + /* GetDisplayname works for both video and audio, DevicePath doesn't */ + r = IMoniker_GetDisplayName(m, bind_ctx, NULL, &olestr); + if (r != S_OK) + goto fail1; + unique_name = dup_wchar_to_utf8(olestr); + /* replace ':' with '_' since we use : to delineate between sources */ + for (i = 0; i < strlen(unique_name); i++) { + if (unique_name[i] == ':') + unique_name[i] = '_'; + } + + r = IMoniker_BindToStorage(m, 0, 0, &IID_IPropertyBag, (void *) &bag); + if (r != S_OK) + goto fail1; + + var.vt = VT_BSTR; + r = IPropertyBag_Read(bag, L"FriendlyName", &var, NULL); + if (r != S_OK) + goto fail1; + friendly_name = dup_wchar_to_utf8(var.bstrVal); + + if (pfilter) { + if (strcmp(device_name, friendly_name) && strcmp(device_name, unique_name)) + goto fail1; + + if (!skip--) { + r = IMoniker_BindToObject(m, 0, 0, &IID_IBaseFilter, (void *) &device_filter); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Unable to BindToObject for %s\n", device_name); + goto fail1; + } + *device_unique_name = unique_name; + // success, loop will end now + } + } else { + av_log(avctx, AV_LOG_INFO, " \"%s\"\n", friendly_name); + av_log(avctx, AV_LOG_INFO, " Alternative name \"%s\"\n", unique_name); + av_free(unique_name); + } + +fail1: + if (olestr && co_malloc) + IMalloc_Free(co_malloc, olestr); + if (bind_ctx) + IBindCtx_Release(bind_ctx); + av_free(friendly_name); + if (bag) + IPropertyBag_Release(bag); + IMoniker_Release(m); + } + + IEnumMoniker_Release(classenum); + + if (pfilter) { + if (!device_filter) { + av_log(avctx, AV_LOG_ERROR, "Could not find %s device with name [%s] among source devices of type %s.\n", + devtypename, device_name, sourcetypename); + return AVERROR(EIO); + } + *pfilter = device_filter; + } + + return 0; +} + +/** + * Cycle through available formats using the specified pin, + * try to set parameters specified through AVOptions and if successful + * return 1 in *pformat_set. + * If pformat_set is NULL, list all pin capabilities. + */ +static void +dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype, + IPin *pin, int *pformat_set) +{ + struct dshow_ctx *ctx = avctx->priv_data; + IAMStreamConfig *config = NULL; + AM_MEDIA_TYPE *type = NULL; + int format_set = 0; + void *caps = NULL; + int i, n, size, r; + + if (IPin_QueryInterface(pin, &IID_IAMStreamConfig, (void **) &config) != S_OK) + return; + if (IAMStreamConfig_GetNumberOfCapabilities(config, &n, &size) != S_OK) + goto end; + + caps = av_malloc(size); + if (!caps) + goto end; + + for (i = 0; i < n && !format_set; i++) { + r = IAMStreamConfig_GetStreamCaps(config, i, &type, (void *) caps); + if (r != S_OK) + goto next; +#if DSHOWDEBUG + ff_print_AM_MEDIA_TYPE(type); +#endif + + if (devtype == VideoDevice) { + VIDEO_STREAM_CONFIG_CAPS *vcaps = caps; + BITMAPINFOHEADER *bih; + int64_t *fr; + const AVCodecTag *const tags[] = { avformat_get_riff_video_tags(), NULL }; +#if DSHOWDEBUG + ff_print_VIDEO_STREAM_CONFIG_CAPS(vcaps); +#endif + if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo)) { + VIDEOINFOHEADER *v = (void *) type->pbFormat; + fr = &v->AvgTimePerFrame; + bih = &v->bmiHeader; + } else if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo2)) { + VIDEOINFOHEADER2 *v = (void *) type->pbFormat; + fr = &v->AvgTimePerFrame; + bih = &v->bmiHeader; + } else { + goto next; + } + if (!pformat_set) { + enum AVPixelFormat pix_fmt = dshow_pixfmt(bih->biCompression, bih->biBitCount); + if (pix_fmt == AV_PIX_FMT_NONE) { + enum AVCodecID codec_id = av_codec_get_id(tags, bih->biCompression); + AVCodec *codec = avcodec_find_decoder(codec_id); + if (codec_id == AV_CODEC_ID_NONE || !codec) { + av_log(avctx, AV_LOG_INFO, " unknown compression type 0x%X", (int) bih->biCompression); + } else { + av_log(avctx, AV_LOG_INFO, " vcodec=%s", codec->name); + } + } else { + av_log(avctx, AV_LOG_INFO, " pixel_format=%s", av_get_pix_fmt_name(pix_fmt)); + } + av_log(avctx, AV_LOG_INFO, " min s=%ldx%ld fps=%g max s=%ldx%ld fps=%g\n", + vcaps->MinOutputSize.cx, vcaps->MinOutputSize.cy, + 1e7 / vcaps->MaxFrameInterval, + vcaps->MaxOutputSize.cx, vcaps->MaxOutputSize.cy, + 1e7 / vcaps->MinFrameInterval); + continue; + } + if (ctx->video_codec_id != AV_CODEC_ID_RAWVIDEO) { + if (ctx->video_codec_id != av_codec_get_id(tags, bih->biCompression)) + goto next; + } + if (ctx->pixel_format != AV_PIX_FMT_NONE && + ctx->pixel_format != dshow_pixfmt(bih->biCompression, bih->biBitCount)) { + goto next; + } + if (ctx->framerate) { + int64_t framerate = ((int64_t) ctx->requested_framerate.den*10000000) + / ctx->requested_framerate.num; + if (framerate > vcaps->MaxFrameInterval || + framerate < vcaps->MinFrameInterval) + goto next; + *fr = framerate; + } + if (ctx->requested_width && ctx->requested_height) { + if (ctx->requested_width > vcaps->MaxOutputSize.cx || + ctx->requested_width < vcaps->MinOutputSize.cx || + ctx->requested_height > vcaps->MaxOutputSize.cy || + ctx->requested_height < vcaps->MinOutputSize.cy) + goto next; + bih->biWidth = ctx->requested_width; + bih->biHeight = ctx->requested_height; + } + } else { + AUDIO_STREAM_CONFIG_CAPS *acaps = caps; + WAVEFORMATEX *fx; +#if DSHOWDEBUG + ff_print_AUDIO_STREAM_CONFIG_CAPS(acaps); +#endif + if (IsEqualGUID(&type->formattype, &FORMAT_WaveFormatEx)) { + fx = (void *) type->pbFormat; + } else { + goto next; + } + if (!pformat_set) { + av_log(avctx, AV_LOG_INFO, " min ch=%lu bits=%lu rate=%6lu max ch=%lu bits=%lu rate=%6lu\n", + acaps->MinimumChannels, acaps->MinimumBitsPerSample, acaps->MinimumSampleFrequency, + acaps->MaximumChannels, acaps->MaximumBitsPerSample, acaps->MaximumSampleFrequency); + continue; + } + if (ctx->sample_rate) { + if (ctx->sample_rate > acaps->MaximumSampleFrequency || + ctx->sample_rate < acaps->MinimumSampleFrequency) + goto next; + fx->nSamplesPerSec = ctx->sample_rate; + } + if (ctx->sample_size) { + if (ctx->sample_size > acaps->MaximumBitsPerSample || + ctx->sample_size < acaps->MinimumBitsPerSample) + goto next; + fx->wBitsPerSample = ctx->sample_size; + } + if (ctx->channels) { + if (ctx->channels > acaps->MaximumChannels || + ctx->channels < acaps->MinimumChannels) + goto next; + fx->nChannels = ctx->channels; + } + } + if (IAMStreamConfig_SetFormat(config, type) != S_OK) + goto next; + format_set = 1; +next: + if (type->pbFormat) + CoTaskMemFree(type->pbFormat); + CoTaskMemFree(type); + } +end: + IAMStreamConfig_Release(config); + av_free(caps); + if (pformat_set) + *pformat_set = format_set; +} + +/** + * Set audio device buffer size in milliseconds (which can directly impact + * latency, depending on the device). + */ +static int +dshow_set_audio_buffer_size(AVFormatContext *avctx, IPin *pin) +{ + struct dshow_ctx *ctx = avctx->priv_data; + IAMBufferNegotiation *buffer_negotiation = NULL; + ALLOCATOR_PROPERTIES props = { -1, -1, -1, -1 }; + IAMStreamConfig *config = NULL; + AM_MEDIA_TYPE *type = NULL; + int ret = AVERROR(EIO); + + if (IPin_QueryInterface(pin, &IID_IAMStreamConfig, (void **) &config) != S_OK) + goto end; + if (IAMStreamConfig_GetFormat(config, &type) != S_OK) + goto end; + if (!IsEqualGUID(&type->formattype, &FORMAT_WaveFormatEx)) + goto end; + + props.cbBuffer = (((WAVEFORMATEX *) type->pbFormat)->nAvgBytesPerSec) + * ctx->audio_buffer_size / 1000; + + if (IPin_QueryInterface(pin, &IID_IAMBufferNegotiation, (void **) &buffer_negotiation) != S_OK) + goto end; + if (IAMBufferNegotiation_SuggestAllocatorProperties(buffer_negotiation, &props) != S_OK) + goto end; + + ret = 0; + +end: + if (buffer_negotiation) + IAMBufferNegotiation_Release(buffer_negotiation); + if (type) { + if (type->pbFormat) + CoTaskMemFree(type->pbFormat); + CoTaskMemFree(type); + } + if (config) + IAMStreamConfig_Release(config); + + return ret; +} + +/** + * Pops up a user dialog allowing them to adjust properties for the given filter, if possible. + */ +void +dshow_show_filter_properties(IBaseFilter *device_filter, AVFormatContext *avctx) { + ISpecifyPropertyPages *property_pages = NULL; + IUnknown *device_filter_iunknown = NULL; + HRESULT hr; + FILTER_INFO filter_info = {0}; /* a warning on this line is false positive GCC bug 53119 AFAICT */ + CAUUID ca_guid = {0}; + + hr = IBaseFilter_QueryInterface(device_filter, &IID_ISpecifyPropertyPages, (void **)&property_pages); + if (hr != S_OK) { + av_log(avctx, AV_LOG_WARNING, "requested filter does not have a property page to show"); + goto end; + } + hr = IBaseFilter_QueryFilterInfo(device_filter, &filter_info); + if (hr != S_OK) { + goto fail; + } + hr = IBaseFilter_QueryInterface(device_filter, &IID_IUnknown, (void **)&device_filter_iunknown); + if (hr != S_OK) { + goto fail; + } + hr = ISpecifyPropertyPages_GetPages(property_pages, &ca_guid); + if (hr != S_OK) { + goto fail; + } + hr = OleCreatePropertyFrame(NULL, 0, 0, filter_info.achName, 1, &device_filter_iunknown, ca_guid.cElems, + ca_guid.pElems, 0, 0, NULL); + if (hr != S_OK) { + goto fail; + } + goto end; +fail: + av_log(avctx, AV_LOG_ERROR, "Failure showing property pages for filter"); +end: + if (property_pages) + ISpecifyPropertyPages_Release(property_pages); + if (device_filter_iunknown) + IUnknown_Release(device_filter_iunknown); + if (filter_info.pGraph) + IFilterGraph_Release(filter_info.pGraph); + if (ca_guid.pElems) + CoTaskMemFree(ca_guid.pElems); +} + +/** + * Cycle through available pins using the device_filter device, of type + * devtype, retrieve the first output pin and return the pointer to the + * object found in *ppin. + * If ppin is NULL, cycle through all pins listing audio/video capabilities. + */ +static int +dshow_cycle_pins(AVFormatContext *avctx, enum dshowDeviceType devtype, + enum dshowSourceFilterType sourcetype, IBaseFilter *device_filter, IPin **ppin) +{ + struct dshow_ctx *ctx = avctx->priv_data; + IEnumPins *pins = 0; + IPin *device_pin = NULL; + IPin *pin; + int r; + + const GUID *mediatype[2] = { &MEDIATYPE_Video, &MEDIATYPE_Audio }; + const char *devtypename = (devtype == VideoDevice) ? "video" : "audio only"; + const char *sourcetypename = (sourcetype == VideoSourceDevice) ? "video" : "audio"; + + int set_format = (devtype == VideoDevice && (ctx->framerate || + (ctx->requested_width && ctx->requested_height) || + ctx->pixel_format != AV_PIX_FMT_NONE || + ctx->video_codec_id != AV_CODEC_ID_RAWVIDEO)) + || (devtype == AudioDevice && (ctx->channels || ctx->sample_rate)); + int format_set = 0; + int should_show_properties = (devtype == VideoDevice) ? ctx->show_video_device_dialog : ctx->show_audio_device_dialog; + + if (should_show_properties) + dshow_show_filter_properties(device_filter, avctx); + + r = IBaseFilter_EnumPins(device_filter, &pins); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not enumerate pins.\n"); + return AVERROR(EIO); + } + + if (!ppin) { + av_log(avctx, AV_LOG_INFO, "DirectShow %s device options (from %s devices)\n", + devtypename, sourcetypename); + } + + while (!device_pin && IEnumPins_Next(pins, 1, &pin, NULL) == S_OK) { + IKsPropertySet *p = NULL; + IEnumMediaTypes *types = NULL; + PIN_INFO info = {0}; + AM_MEDIA_TYPE *type; + GUID category; + DWORD r2; + char *name_buf = NULL; + wchar_t *pin_id = NULL; + char *pin_buf = NULL; + char *desired_pin_name = devtype == VideoDevice ? ctx->video_pin_name : ctx->audio_pin_name; + + IPin_QueryPinInfo(pin, &info); + IBaseFilter_Release(info.pFilter); + + if (info.dir != PINDIR_OUTPUT) + goto next; + if (IPin_QueryInterface(pin, &IID_IKsPropertySet, (void **) &p) != S_OK) + goto next; + if (IKsPropertySet_Get(p, &ROPSETID_Pin, AMPROPERTY_PIN_CATEGORY, + NULL, 0, &category, sizeof(GUID), &r2) != S_OK) + goto next; + if (!IsEqualGUID(&category, &PIN_CATEGORY_CAPTURE)) + goto next; + name_buf = dup_wchar_to_utf8(info.achName); + + r = IPin_QueryId(pin, &pin_id); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not query pin id\n"); + return AVERROR(EIO); + } + pin_buf = dup_wchar_to_utf8(pin_id); + + if (!ppin) { + av_log(avctx, AV_LOG_INFO, " Pin \"%s\" (alternative pin name \"%s\")\n", name_buf, pin_buf); + dshow_cycle_formats(avctx, devtype, pin, NULL); + goto next; + } + + if (desired_pin_name) { + if(strcmp(name_buf, desired_pin_name) && strcmp(pin_buf, desired_pin_name)) { + av_log(avctx, AV_LOG_DEBUG, "skipping pin \"%s\" (\"%s\") != requested \"%s\"\n", + name_buf, pin_buf, desired_pin_name); + goto next; + } + } + + if (set_format) { + dshow_cycle_formats(avctx, devtype, pin, &format_set); + if (!format_set) { + goto next; + } + } + if (devtype == AudioDevice && ctx->audio_buffer_size) { + if (dshow_set_audio_buffer_size(avctx, pin) < 0) { + av_log(avctx, AV_LOG_ERROR, "unable to set audio buffer size %d to pin, using pin anyway...", ctx->audio_buffer_size); + } + } + + if (IPin_EnumMediaTypes(pin, &types) != S_OK) + goto next; + + IEnumMediaTypes_Reset(types); + /* in case format_set was not called, just verify the majortype */ + while (!device_pin && IEnumMediaTypes_Next(types, 1, &type, NULL) == S_OK) { + if (IsEqualGUID(&type->majortype, mediatype[devtype])) { + device_pin = pin; + av_log(avctx, AV_LOG_DEBUG, "Selecting pin %s on %s\n", name_buf, devtypename); + goto next; + } + CoTaskMemFree(type); + } + +next: + if (types) + IEnumMediaTypes_Release(types); + if (p) + IKsPropertySet_Release(p); + if (device_pin != pin) + IPin_Release(pin); + av_free(name_buf); + av_free(pin_buf); + if (pin_id) + CoTaskMemFree(pin_id); + } + + IEnumPins_Release(pins); + + if (ppin) { + if (set_format && !format_set) { + av_log(avctx, AV_LOG_ERROR, "Could not set %s options\n", devtypename); + return AVERROR(EIO); + } + if (!device_pin) { + av_log(avctx, AV_LOG_ERROR, + "Could not find output pin from %s capture device.\n", devtypename); + return AVERROR(EIO); + } + *ppin = device_pin; + } + + return 0; +} + +/** + * List options for device with type devtype, source filter type sourcetype + * + * @param devenum device enumerator used for accessing the device + */ +static int +dshow_list_device_options(AVFormatContext *avctx, ICreateDevEnum *devenum, + enum dshowDeviceType devtype, enum dshowSourceFilterType sourcetype) +{ + struct dshow_ctx *ctx = avctx->priv_data; + IBaseFilter *device_filter = NULL; + char *device_unique_name = NULL; + int r; + + if ((r = dshow_cycle_devices(avctx, devenum, devtype, sourcetype, &device_filter, &device_unique_name)) < 0) + return r; + ctx->device_filter[devtype] = device_filter; + if ((r = dshow_cycle_pins(avctx, devtype, sourcetype, device_filter, NULL)) < 0) + return r; + av_freep(&device_unique_name); + return 0; +} + +static int +dshow_open_device(AVFormatContext *avctx, ICreateDevEnum *devenum, + enum dshowDeviceType devtype, enum dshowSourceFilterType sourcetype) +{ + struct dshow_ctx *ctx = avctx->priv_data; + IBaseFilter *device_filter = NULL; + char *device_filter_unique_name = NULL; + IGraphBuilder *graph = ctx->graph; + IPin *device_pin = NULL; + libAVPin *capture_pin = NULL; + libAVFilter *capture_filter = NULL; + ICaptureGraphBuilder2 *graph_builder2 = NULL; + int ret = AVERROR(EIO); + int r; + IStream *ifile_stream = NULL; + IStream *ofile_stream = NULL; + IPersistStream *pers_stream = NULL; + enum dshowDeviceType otherDevType = (devtype == VideoDevice) ? AudioDevice : VideoDevice; + + const wchar_t *filter_name[2] = { L"Audio capture filter", L"Video capture filter" }; + + + if ( ((ctx->audio_filter_load_file) && (strlen(ctx->audio_filter_load_file)>0) && (sourcetype == AudioSourceDevice)) || + ((ctx->video_filter_load_file) && (strlen(ctx->video_filter_load_file)>0) && (sourcetype == VideoSourceDevice)) ) { + HRESULT hr; + char *filename = NULL; + + if (sourcetype == AudioSourceDevice) + filename = ctx->audio_filter_load_file; + else + filename = ctx->video_filter_load_file; + + hr = SHCreateStreamOnFile ((LPCSTR) filename, STGM_READ, &ifile_stream); + if (S_OK != hr) { + av_log(avctx, AV_LOG_ERROR, "Could not open capture filter description file.\n"); + goto error; + } + + hr = OleLoadFromStream(ifile_stream, &IID_IBaseFilter, (void **) &device_filter); + if (hr != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not load capture filter from file.\n"); + goto error; + } + + if (sourcetype == AudioSourceDevice) + av_log(avctx, AV_LOG_INFO, "Audio-"); + else + av_log(avctx, AV_LOG_INFO, "Video-"); + av_log(avctx, AV_LOG_INFO, "Capture filter loaded successfully from file \"%s\".\n", filename); + } else { + + if ((r = dshow_cycle_devices(avctx, devenum, devtype, sourcetype, &device_filter, &device_filter_unique_name)) < 0) { + ret = r; + goto error; + } + } + if (ctx->device_filter[otherDevType]) { + // avoid adding add two instances of the same device to the graph, one for video, one for audio + // a few devices don't support this (could also do this check earlier to avoid double crossbars, etc. but they seem OK) + if (strcmp(device_filter_unique_name, ctx->device_unique_name[otherDevType]) == 0) { + av_log(avctx, AV_LOG_DEBUG, "reusing previous graph capture filter... %s\n", device_filter_unique_name); + IBaseFilter_Release(device_filter); + device_filter = ctx->device_filter[otherDevType]; + IBaseFilter_AddRef(ctx->device_filter[otherDevType]); + } else { + av_log(avctx, AV_LOG_DEBUG, "not reusing previous graph capture filter %s != %s\n", device_filter_unique_name, ctx->device_unique_name[otherDevType]); + } + } + + ctx->device_filter [devtype] = device_filter; + ctx->device_unique_name [devtype] = device_filter_unique_name; + + r = IGraphBuilder_AddFilter(graph, device_filter, NULL); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not add device filter to graph.\n"); + goto error; + } + + if ((r = dshow_cycle_pins(avctx, devtype, sourcetype, device_filter, &device_pin)) < 0) { + ret = r; + goto error; + } + + ctx->device_pin[devtype] = device_pin; + + capture_filter = libAVFilter_Create(avctx, callback, devtype); + if (!capture_filter) { + av_log(avctx, AV_LOG_ERROR, "Could not create grabber filter.\n"); + goto error; + } + ctx->capture_filter[devtype] = capture_filter; + + if ( ((ctx->audio_filter_save_file) && (strlen(ctx->audio_filter_save_file)>0) && (sourcetype == AudioSourceDevice)) || + ((ctx->video_filter_save_file) && (strlen(ctx->video_filter_save_file)>0) && (sourcetype == VideoSourceDevice)) ) { + + HRESULT hr; + char *filename = NULL; + + if (sourcetype == AudioSourceDevice) + filename = ctx->audio_filter_save_file; + else + filename = ctx->video_filter_save_file; + + hr = SHCreateStreamOnFile ((LPCSTR) filename, STGM_CREATE | STGM_READWRITE, &ofile_stream); + if (S_OK != hr) { + av_log(avctx, AV_LOG_ERROR, "Could not create capture filter description file.\n"); + goto error; + } + + hr = IBaseFilter_QueryInterface(device_filter, &IID_IPersistStream, (void **) &pers_stream); + if (hr != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Query for IPersistStream failed.\n"); + goto error; + } + + hr = OleSaveToStream(pers_stream, ofile_stream); + if (hr != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not save capture filter \n"); + goto error; + } + + hr = IStream_Commit(ofile_stream, STGC_DEFAULT); + if (S_OK != hr) { + av_log(avctx, AV_LOG_ERROR, "Could not commit capture filter data to file.\n"); + goto error; + } + + if (sourcetype == AudioSourceDevice) + av_log(avctx, AV_LOG_INFO, "Audio-"); + else + av_log(avctx, AV_LOG_INFO, "Video-"); + av_log(avctx, AV_LOG_INFO, "Capture filter saved successfully to file \"%s\".\n", filename); + } + + r = IGraphBuilder_AddFilter(graph, (IBaseFilter *) capture_filter, + filter_name[devtype]); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not add capture filter to graph\n"); + goto error; + } + + libAVPin_AddRef(capture_filter->pin); + capture_pin = capture_filter->pin; + ctx->capture_pin[devtype] = capture_pin; + + r = CoCreateInstance(&CLSID_CaptureGraphBuilder2, NULL, CLSCTX_INPROC_SERVER, + &IID_ICaptureGraphBuilder2, (void **) &graph_builder2); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not create CaptureGraphBuilder2\n"); + goto error; + } + ICaptureGraphBuilder2_SetFiltergraph(graph_builder2, graph); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not set graph for CaptureGraphBuilder2\n"); + goto error; + } + + r = ICaptureGraphBuilder2_RenderStream(graph_builder2, NULL, NULL, (IUnknown *) device_pin, NULL /* no intermediate filter */, + (IBaseFilter *) capture_filter); /* connect pins, optionally insert intermediate filters like crossbar if necessary */ + + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not RenderStream to connect pins\n"); + goto error; + } + + r = dshow_try_setup_crossbar_options(graph_builder2, device_filter, devtype, avctx); + + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not setup CrossBar\n"); + goto error; + } + + ret = 0; + +error: + if (graph_builder2 != NULL) + ICaptureGraphBuilder2_Release(graph_builder2); + + if (pers_stream) + IPersistStream_Release(pers_stream); + + if (ifile_stream) + IStream_Release(ifile_stream); + + if (ofile_stream) + IStream_Release(ofile_stream); + + return ret; +} + +static enum AVCodecID waveform_codec_id(enum AVSampleFormat sample_fmt) +{ + switch (sample_fmt) { + case AV_SAMPLE_FMT_U8: return AV_CODEC_ID_PCM_U8; + case AV_SAMPLE_FMT_S16: return AV_CODEC_ID_PCM_S16LE; + case AV_SAMPLE_FMT_S32: return AV_CODEC_ID_PCM_S32LE; + default: return AV_CODEC_ID_NONE; /* Should never happen. */ + } +} + +static enum AVSampleFormat sample_fmt_bits_per_sample(int bits) +{ + switch (bits) { + case 8: return AV_SAMPLE_FMT_U8; + case 16: return AV_SAMPLE_FMT_S16; + case 32: return AV_SAMPLE_FMT_S32; + default: return AV_SAMPLE_FMT_NONE; /* Should never happen. */ + } +} + +static int +dshow_add_device(AVFormatContext *avctx, + enum dshowDeviceType devtype) +{ + struct dshow_ctx *ctx = avctx->priv_data; + AM_MEDIA_TYPE type; + AVCodecParameters *par; + AVStream *st; + int ret = AVERROR(EIO); + + st = avformat_new_stream(avctx, NULL); + if (!st) { + ret = AVERROR(ENOMEM); + goto error; + } + st->id = devtype; + + ctx->capture_filter[devtype]->stream_index = st->index; + + libAVPin_ConnectionMediaType(ctx->capture_pin[devtype], &type); + + par = st->codecpar; + if (devtype == VideoDevice) { + BITMAPINFOHEADER *bih = NULL; + AVRational time_base; + + if (IsEqualGUID(&type.formattype, &FORMAT_VideoInfo)) { + VIDEOINFOHEADER *v = (void *) type.pbFormat; + time_base = (AVRational) { v->AvgTimePerFrame, 10000000 }; + bih = &v->bmiHeader; + } else if (IsEqualGUID(&type.formattype, &FORMAT_VideoInfo2)) { + VIDEOINFOHEADER2 *v = (void *) type.pbFormat; + time_base = (AVRational) { v->AvgTimePerFrame, 10000000 }; + bih = &v->bmiHeader; + } + if (!bih) { + av_log(avctx, AV_LOG_ERROR, "Could not get media type.\n"); + goto error; + } + + st->avg_frame_rate = av_inv_q(time_base); + st->r_frame_rate = av_inv_q(time_base); + + par->codec_type = AVMEDIA_TYPE_VIDEO; + par->width = bih->biWidth; + par->height = bih->biHeight; + par->codec_tag = bih->biCompression; + par->format = dshow_pixfmt(bih->biCompression, bih->biBitCount); + if (bih->biCompression == MKTAG('H', 'D', 'Y', 'C')) { + av_log(avctx, AV_LOG_DEBUG, "attempt to use full range for HDYC...\n"); + par->color_range = AVCOL_RANGE_MPEG; // just in case it needs this... + } + if (par->format == AV_PIX_FMT_NONE) { + const AVCodecTag *const tags[] = { avformat_get_riff_video_tags(), NULL }; + par->codec_id = av_codec_get_id(tags, bih->biCompression); + if (par->codec_id == AV_CODEC_ID_NONE) { + av_log(avctx, AV_LOG_ERROR, "Unknown compression type. " + "Please report type 0x%X.\n", (int) bih->biCompression); + return AVERROR_PATCHWELCOME; + } + par->bits_per_coded_sample = bih->biBitCount; + } else { + par->codec_id = AV_CODEC_ID_RAWVIDEO; + if (bih->biCompression == BI_RGB || bih->biCompression == BI_BITFIELDS) { + par->bits_per_coded_sample = bih->biBitCount; + par->extradata = av_malloc(9 + AV_INPUT_BUFFER_PADDING_SIZE); + if (par->extradata) { + par->extradata_size = 9; + memcpy(par->extradata, "BottomUp", 9); + } + } + } + } else { + WAVEFORMATEX *fx = NULL; + + if (IsEqualGUID(&type.formattype, &FORMAT_WaveFormatEx)) { + fx = (void *) type.pbFormat; + } + if (!fx) { + av_log(avctx, AV_LOG_ERROR, "Could not get media type.\n"); + goto error; + } + + par->codec_type = AVMEDIA_TYPE_AUDIO; + par->format = sample_fmt_bits_per_sample(fx->wBitsPerSample); + par->codec_id = waveform_codec_id(par->format); + par->sample_rate = fx->nSamplesPerSec; + par->channels = fx->nChannels; + } + + avpriv_set_pts_info(st, 64, 1, 10000000); + + ret = 0; + +error: + return ret; +} + +static int parse_device_name(AVFormatContext *avctx) +{ + struct dshow_ctx *ctx = avctx->priv_data; + char **device_name = ctx->device_name; + char *name = av_strdup(avctx->filename); + char *tmp = name; + int ret = 1; + char *type; + + while ((type = strtok(tmp, "="))) { + char *token = strtok(NULL, ":"); + tmp = NULL; + + if (!strcmp(type, "video")) { + device_name[0] = token; + } else if (!strcmp(type, "audio")) { + device_name[1] = token; + } else { + device_name[0] = NULL; + device_name[1] = NULL; + break; + } + } + + if (!device_name[0] && !device_name[1]) { + ret = 0; + } else { + if (device_name[0]) + device_name[0] = av_strdup(device_name[0]); + if (device_name[1]) + device_name[1] = av_strdup(device_name[1]); + } + + av_free(name); + return ret; +} + +static int dshow_read_header(AVFormatContext *avctx) +{ + struct dshow_ctx *ctx = avctx->priv_data; + IGraphBuilder *graph = NULL; + ICreateDevEnum *devenum = NULL; + IMediaControl *control = NULL; + IMediaEvent *media_event = NULL; + HANDLE media_event_handle; + HANDLE proc; + int ret = AVERROR(EIO); + int r; + + CoInitialize(0); + + if (!ctx->list_devices && !parse_device_name(avctx)) { + av_log(avctx, AV_LOG_ERROR, "Malformed dshow input string.\n"); + goto error; + } + + ctx->video_codec_id = avctx->video_codec_id ? avctx->video_codec_id + : AV_CODEC_ID_RAWVIDEO; + if (ctx->pixel_format != AV_PIX_FMT_NONE) { + if (ctx->video_codec_id != AV_CODEC_ID_RAWVIDEO) { + av_log(avctx, AV_LOG_ERROR, "Pixel format may only be set when " + "video codec is not set or set to rawvideo\n"); + ret = AVERROR(EINVAL); + goto error; + } + } + if (ctx->framerate) { + r = av_parse_video_rate(&ctx->requested_framerate, ctx->framerate); + if (r < 0) { + av_log(avctx, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", ctx->framerate); + goto error; + } + } + + r = CoCreateInstance(&CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, + &IID_IGraphBuilder, (void **) &graph); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not create capture graph.\n"); + goto error; + } + ctx->graph = graph; + + r = CoCreateInstance(&CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, + &IID_ICreateDevEnum, (void **) &devenum); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not enumerate system devices.\n"); + goto error; + } + + if (ctx->list_devices) { + av_log(avctx, AV_LOG_INFO, "DirectShow video devices (some may be both video and audio devices)\n"); + dshow_cycle_devices(avctx, devenum, VideoDevice, VideoSourceDevice, NULL, NULL); + av_log(avctx, AV_LOG_INFO, "DirectShow audio devices\n"); + dshow_cycle_devices(avctx, devenum, AudioDevice, AudioSourceDevice, NULL, NULL); + ret = AVERROR_EXIT; + goto error; + } + if (ctx->list_options) { + if (ctx->device_name[VideoDevice]) + if ((r = dshow_list_device_options(avctx, devenum, VideoDevice, VideoSourceDevice))) { + ret = r; + goto error; + } + if (ctx->device_name[AudioDevice]) { + if (dshow_list_device_options(avctx, devenum, AudioDevice, AudioSourceDevice)) { + /* show audio options from combined video+audio sources as fallback */ + if ((r = dshow_list_device_options(avctx, devenum, AudioDevice, VideoSourceDevice))) { + ret = r; + goto error; + } + } + } + } + if (ctx->device_name[VideoDevice]) { + if ((r = dshow_open_device(avctx, devenum, VideoDevice, VideoSourceDevice)) < 0 || + (r = dshow_add_device(avctx, VideoDevice)) < 0) { + ret = r; + goto error; + } + } + if (ctx->device_name[AudioDevice]) { + if ((r = dshow_open_device(avctx, devenum, AudioDevice, AudioSourceDevice)) < 0 || + (r = dshow_add_device(avctx, AudioDevice)) < 0) { + av_log(avctx, AV_LOG_INFO, "Searching for audio device within video devices for %s\n", ctx->device_name[AudioDevice]); + /* see if there's a video source with an audio pin with the given audio name */ + if ((r = dshow_open_device(avctx, devenum, AudioDevice, VideoSourceDevice)) < 0 || + (r = dshow_add_device(avctx, AudioDevice)) < 0) { + ret = r; + goto error; + } + } + } + if (ctx->list_options) { + /* allow it to list crossbar options in dshow_open_device */ + ret = AVERROR_EXIT; + goto error; + } + ctx->curbufsize[0] = 0; + ctx->curbufsize[1] = 0; + ctx->mutex = CreateMutex(NULL, 0, NULL); + if (!ctx->mutex) { + av_log(avctx, AV_LOG_ERROR, "Could not create Mutex\n"); + goto error; + } + ctx->event[1] = CreateEvent(NULL, 1, 0, NULL); + if (!ctx->event[1]) { + av_log(avctx, AV_LOG_ERROR, "Could not create Event\n"); + goto error; + } + + r = IGraphBuilder_QueryInterface(graph, &IID_IMediaControl, (void **) &control); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not get media control.\n"); + goto error; + } + ctx->control = control; + + r = IGraphBuilder_QueryInterface(graph, &IID_IMediaEvent, (void **) &media_event); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not get media event.\n"); + goto error; + } + ctx->media_event = media_event; + + r = IMediaEvent_GetEventHandle(media_event, (void *) &media_event_handle); + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not get media event handle.\n"); + goto error; + } + proc = GetCurrentProcess(); + r = DuplicateHandle(proc, media_event_handle, proc, &ctx->event[0], + 0, 0, DUPLICATE_SAME_ACCESS); + if (!r) { + av_log(avctx, AV_LOG_ERROR, "Could not duplicate media event handle.\n"); + goto error; + } + + r = IMediaControl_Run(control); + if (r == S_FALSE) { + OAFilterState pfs; + r = IMediaControl_GetState(control, 0, &pfs); + } + if (r != S_OK) { + av_log(avctx, AV_LOG_ERROR, "Could not run graph (sometimes caused by a device already in use by other application)\n"); + goto error; + } + + ret = 0; + +error: + + if (devenum) + ICreateDevEnum_Release(devenum); + + if (ret < 0) + dshow_read_close(avctx); + + return ret; +} + +/** + * Checks media events from DirectShow and returns -1 on error or EOF. Also + * purges all events that might be in the event queue to stop the trigger + * of event notification. + */ +static int dshow_check_event_queue(IMediaEvent *media_event) +{ + LONG_PTR p1, p2; + long code; + int ret = 0; + + while (IMediaEvent_GetEvent(media_event, &code, &p1, &p2, 0) != E_ABORT) { + if (code == EC_COMPLETE || code == EC_DEVICE_LOST || code == EC_ERRORABORT) + ret = -1; + IMediaEvent_FreeEventParams(media_event, code, p1, p2); + } + + return ret; +} + +static int dshow_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + struct dshow_ctx *ctx = s->priv_data; + AVPacketList *pktl = NULL; + + while (!ctx->eof && !pktl) { + WaitForSingleObject(ctx->mutex, INFINITE); + pktl = ctx->pktl; + if (pktl) { + *pkt = pktl->pkt; + ctx->pktl = ctx->pktl->next; + av_free(pktl); + ctx->curbufsize[pkt->stream_index] -= pkt->size; + } + ResetEvent(ctx->event[1]); + ReleaseMutex(ctx->mutex); + if (!pktl) { + if (dshow_check_event_queue(ctx->media_event) < 0) { + ctx->eof = 1; + } else if (s->flags & AVFMT_FLAG_NONBLOCK) { + return AVERROR(EAGAIN); + } else { + WaitForMultipleObjects(2, ctx->event, 0, INFINITE); + } + } + } + + return ctx->eof ? AVERROR(EIO) : pkt->size; +} + +#define OFFSET(x) offsetof(struct dshow_ctx, x) +#define DEC AV_OPT_FLAG_DECODING_PARAM +static const AVOption options[] = { + { "video_size", "set video size given a string such as 640x480 or hd720.", OFFSET(requested_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC }, + { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_PIXEL_FMT, {.i64 = AV_PIX_FMT_NONE}, -1, INT_MAX, DEC }, + { "framerate", "set video frame rate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, + { "sample_rate", "set audio sample rate", OFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC }, + { "sample_size", "set audio sample size", OFFSET(sample_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 16, DEC }, + { "channels", "set number of audio channels, such as 1 or 2", OFFSET(channels), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC }, + { "audio_buffer_size", "set audio device buffer latency size in milliseconds (default is the device's default)", OFFSET(audio_buffer_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC }, + { "list_devices", "list available devices", OFFSET(list_devices), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, DEC }, + { "list_options", "list available options for specified device", OFFSET(list_options), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, DEC }, + { "video_device_number", "set video device number for devices with same name (starts at 0)", OFFSET(video_device_number), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC }, + { "audio_device_number", "set audio device number for devices with same name (starts at 0)", OFFSET(audio_device_number), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC }, + { "video_pin_name", "select video capture pin by name", OFFSET(video_pin_name),AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM }, + { "audio_pin_name", "select audio capture pin by name", OFFSET(audio_pin_name),AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, AV_OPT_FLAG_ENCODING_PARAM }, + { "crossbar_video_input_pin_number", "set video input pin number for crossbar device", OFFSET(crossbar_video_input_pin_number), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, DEC }, + { "crossbar_audio_input_pin_number", "set audio input pin number for crossbar device", OFFSET(crossbar_audio_input_pin_number), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, DEC }, + { "show_video_device_dialog", "display property dialog for video capture device", OFFSET(show_video_device_dialog), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC }, + { "show_audio_device_dialog", "display property dialog for audio capture device", OFFSET(show_audio_device_dialog), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC }, + { "show_video_crossbar_connection_dialog", "display property dialog for crossbar connecting pins filter on video device", OFFSET(show_video_crossbar_connection_dialog), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC }, + { "show_audio_crossbar_connection_dialog", "display property dialog for crossbar connecting pins filter on audio device", OFFSET(show_audio_crossbar_connection_dialog), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC }, + { "show_analog_tv_tuner_dialog", "display property dialog for analog tuner filter", OFFSET(show_analog_tv_tuner_dialog), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC }, + { "show_analog_tv_tuner_audio_dialog", "display property dialog for analog tuner audio filter", OFFSET(show_analog_tv_tuner_audio_dialog), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC }, + { "audio_device_load", "load audio capture filter device (and properties) from file", OFFSET(audio_filter_load_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, + { "audio_device_save", "save audio capture filter device (and properties) to file", OFFSET(audio_filter_save_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, + { "video_device_load", "load video capture filter device (and properties) from file", OFFSET(video_filter_load_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, + { "video_device_save", "save video capture filter device (and properties) to file", OFFSET(video_filter_save_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, + { NULL }, +}; + +static const AVClass dshow_class = { + .class_name = "dshow indev", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, + .category = AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT, +}; + +AVInputFormat ff_dshow_demuxer = { + .name = "dshow", + .long_name = NULL_IF_CONFIG_SMALL("DirectShow capture"), + .priv_data_size = sizeof(struct dshow_ctx), + .read_header = dshow_read_header, + .read_packet = dshow_read_packet, + .read_close = dshow_read_close, + .flags = AVFMT_NOFILE, + .priv_class = &dshow_class, +}; |