| /* |
| * 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 "libavutil/parseutils.h" |
| #include "libavutil/opt.h" |
| #include "libavformat/internal.h" |
| #include "avdevice.h" |
| #include "dshow.h" |
| |
| struct dshow_ctx { |
| const AVClass *class; |
| |
| IGraphBuilder *graph; |
| |
| char *device_name[2]; |
| int video_device_number; |
| int audio_device_number; |
| |
| int list_options; |
| int list_devices; |
| |
| IBaseFilter *device_filter[2]; |
| IPin *device_pin[2]; |
| libAVFilter *capture_filter[2]; |
| libAVPin *capture_pin[2]; |
| |
| HANDLE mutex; |
| HANDLE event; |
| AVPacketList *pktl; |
| |
| unsigned int curbufsize; |
| unsigned int video_frame_num; |
| |
| IMediaControl *control; |
| |
| char *video_size; |
| char *framerate; |
| |
| int requested_width; |
| int requested_height; |
| AVRational requested_framerate; |
| |
| int sample_rate; |
| int sample_size; |
| int channels; |
| }; |
| |
| static enum PixelFormat dshow_pixfmt(DWORD biCompression, WORD biBitCount) |
| { |
| switch(biCompression) { |
| case MKTAG('U', 'Y', 'V', 'Y'): |
| return PIX_FMT_UYVY422; |
| case MKTAG('Y', 'U', 'Y', '2'): |
| return PIX_FMT_YUYV422; |
| case MKTAG('I', '4', '2', '0'): |
| return PIX_FMT_YUV420P; |
| case BI_BITFIELDS: |
| case BI_RGB: |
| switch(biBitCount) { /* 1-8 are untested */ |
| case 1: |
| return PIX_FMT_MONOWHITE; |
| case 4: |
| return PIX_FMT_RGB4; |
| case 8: |
| return PIX_FMT_RGB8; |
| case 16: |
| return PIX_FMT_RGB555; |
| case 24: |
| return PIX_FMT_BGR24; |
| case 32: |
| return PIX_FMT_RGB32; |
| } |
| } |
| return PIX_FMT_NONE; |
| } |
| |
| static enum CodecID dshow_codecid(DWORD biCompression) |
| { |
| switch(biCompression) { |
| case MKTAG('d', 'v', 's', 'd'): |
| return CODEC_ID_DVVIDEO; |
| case MKTAG('M', 'J', 'P', 'G'): |
| case MKTAG('m', 'j', 'p', 'g'): |
| return CODEC_ID_MJPEG; |
| } |
| return CODEC_ID_NONE; |
| } |
| |
| 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->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]); |
| |
| if (ctx->device_name[0]) |
| av_free(ctx->device_name[0]); |
| if (ctx->device_name[1]) |
| av_free(ctx->device_name[1]); |
| |
| if(ctx->mutex) |
| CloseHandle(ctx->mutex); |
| if(ctx->event) |
| CloseHandle(ctx->event); |
| |
| pktl = ctx->pktl; |
| while (pktl) { |
| AVPacketList *next = pktl->next; |
| av_destruct_packet(&pktl->pkt); |
| av_free(pktl); |
| pktl = next; |
| } |
| |
| 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) |
| { |
| struct dshow_ctx *ctx = s->priv_data; |
| const uint8_t dropscore[] = {62, 75, 87, 100}; |
| const int ndropscores = FF_ARRAY_ELEMS(dropscore); |
| unsigned int buffer_fullness = (ctx->curbufsize*100)/s->max_picture_buffer; |
| |
| if(dropscore[++ctx->video_frame_num%ndropscores] <= buffer_fullness) { |
| av_log(s, AV_LOG_ERROR, |
| "real-time buffer %d%% full! frame dropped!\n", buffer_fullness); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static void |
| callback(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time) |
| { |
| AVFormatContext *s = priv_data; |
| struct dshow_ctx *ctx = s->priv_data; |
| AVPacketList **ppktl, *pktl_next; |
| |
| // dump_videohdr(s, vdhdr); |
| |
| if(shall_we_drop(s)) |
| return; |
| |
| WaitForSingleObject(ctx->mutex, INFINITE); |
| |
| 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 += buf_size; |
| |
| SetEvent(ctx->event); |
| 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, IBaseFilter **pfilter) |
| { |
| 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"; |
| |
| r = ICreateDevEnum_CreateClassEnumerator(devenum, device_guid[devtype], |
| (IEnumMoniker **) &classenum, 0); |
| if (r != S_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Could not enumerate %s devices.\n", |
| devtypename); |
| return AVERROR(EIO); |
| } |
| |
| while (!device_filter && IEnumMoniker_Next(classenum, 1, &m, NULL) == S_OK) { |
| IPropertyBag *bag = NULL; |
| char *buf = NULL; |
| VARIANT var; |
| |
| 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; |
| |
| buf = dup_wchar_to_utf8(var.bstrVal); |
| |
| if (pfilter) { |
| if (strcmp(device_name, buf)) |
| goto fail1; |
| |
| if (!skip--) |
| IMoniker_BindToObject(m, 0, 0, &IID_IBaseFilter, (void *) &device_filter); |
| } else { |
| av_log(avctx, AV_LOG_INFO, " \"%s\"\n", buf); |
| } |
| |
| fail1: |
| if (buf) |
| av_free(buf); |
| 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.\n", |
| devtypename); |
| 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; |
| |
| 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++) { |
| IAMStreamConfig_GetStreamCaps(config, i, &type, (void *) caps); |
| |
| #if DSHOWDEBUG |
| ff_print_AM_MEDIA_TYPE(type); |
| #endif |
| |
| if (devtype == VideoDevice) { |
| VIDEO_STREAM_CONFIG_CAPS *vcaps = caps; |
| BITMAPINFOHEADER *bih; |
| int64_t *fr; |
| #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) { |
| 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->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->video_size) { |
| 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); |
| if (caps) |
| av_free(caps); |
| if (pformat_set) |
| *pformat_set = format_set; |
| } |
| |
| /** |
| * 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, |
| 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"; |
| |
| int set_format = (devtype == VideoDevice && (ctx->video_size || ctx->framerate)) |
| || (devtype == AudioDevice && (ctx->channels || ctx->sample_rate)); |
| int format_set = 0; |
| |
| 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\n", |
| devtypename); |
| } |
| 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; |
| |
| 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; |
| |
| if (!ppin) { |
| char *buf = dup_wchar_to_utf8(info.achName); |
| av_log(avctx, AV_LOG_INFO, " Pin \"%s\"\n", buf); |
| av_free(buf); |
| dshow_cycle_formats(avctx, devtype, pin, NULL); |
| goto next; |
| } |
| if (set_format) { |
| dshow_cycle_formats(avctx, devtype, pin, &format_set); |
| if (!format_set) { |
| goto next; |
| } |
| } |
| |
| if (IPin_EnumMediaTypes(pin, &types) != S_OK) |
| goto next; |
| |
| IEnumMediaTypes_Reset(types); |
| while (!device_pin && IEnumMediaTypes_Next(types, 1, &type, NULL) == S_OK) { |
| if (IsEqualGUID(&type->majortype, mediatype[devtype])) { |
| device_pin = pin; |
| goto next; |
| } |
| CoTaskMemFree(type); |
| } |
| |
| next: |
| if (types) |
| IEnumMediaTypes_Release(types); |
| if (p) |
| IKsPropertySet_Release(p); |
| if (device_pin != pin) |
| IPin_Release(pin); |
| } |
| |
| 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. |
| * |
| * @param devenum device enumerator used for accessing the device |
| */ |
| static int |
| dshow_list_device_options(AVFormatContext *avctx, ICreateDevEnum *devenum, |
| enum dshowDeviceType devtype) |
| { |
| struct dshow_ctx *ctx = avctx->priv_data; |
| IBaseFilter *device_filter = NULL; |
| int r; |
| |
| if ((r = dshow_cycle_devices(avctx, devenum, devtype, &device_filter)) < 0) |
| return r; |
| ctx->device_filter[devtype] = device_filter; |
| if ((r = dshow_cycle_pins(avctx, devtype, device_filter, NULL)) < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int |
| dshow_open_device(AVFormatContext *avctx, ICreateDevEnum *devenum, |
| enum dshowDeviceType devtype) |
| { |
| struct dshow_ctx *ctx = avctx->priv_data; |
| IBaseFilter *device_filter = NULL; |
| IGraphBuilder *graph = ctx->graph; |
| IPin *device_pin = NULL; |
| libAVPin *capture_pin = NULL; |
| libAVFilter *capture_filter = NULL; |
| int ret = AVERROR(EIO); |
| int r; |
| |
| const wchar_t *filter_name[2] = { L"Audio capture filter", L"Video capture filter" }; |
| |
| if ((r = dshow_cycle_devices(avctx, devenum, devtype, &device_filter)) < 0) { |
| ret = r; |
| goto error; |
| } |
| |
| ctx->device_filter [devtype] = device_filter; |
| |
| 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, 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; |
| |
| 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 = IGraphBuilder_ConnectDirect(graph, device_pin, (IPin *) capture_pin, NULL); |
| if (r != S_OK) { |
| av_log(avctx, AV_LOG_ERROR, "Could not connect pins\n"); |
| goto error; |
| } |
| |
| ret = 0; |
| |
| error: |
| return ret; |
| } |
| |
| static enum CodecID waveform_codec_id(enum AVSampleFormat sample_fmt) |
| { |
| switch (sample_fmt) { |
| case AV_SAMPLE_FMT_U8: return CODEC_ID_PCM_U8; |
| case AV_SAMPLE_FMT_S16: return CODEC_ID_PCM_S16LE; |
| case AV_SAMPLE_FMT_S32: return CODEC_ID_PCM_S32LE; |
| default: return CODEC_ID_NONE; /* Should never happen. */ |
| } |
| } |
| |
| static enum SampleFormat 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, AVFormatParameters *ap, |
| enum dshowDeviceType devtype) |
| { |
| struct dshow_ctx *ctx = avctx->priv_data; |
| AM_MEDIA_TYPE type; |
| AVCodecContext *codec; |
| 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); |
| |
| codec = st->codec; |
| if (devtype == VideoDevice) { |
| BITMAPINFOHEADER *bih = NULL; |
| |
| if (IsEqualGUID(&type.formattype, &FORMAT_VideoInfo)) { |
| VIDEOINFOHEADER *v = (void *) type.pbFormat; |
| bih = &v->bmiHeader; |
| } else if (IsEqualGUID(&type.formattype, &FORMAT_VideoInfo2)) { |
| VIDEOINFOHEADER2 *v = (void *) type.pbFormat; |
| bih = &v->bmiHeader; |
| } |
| if (!bih) { |
| av_log(avctx, AV_LOG_ERROR, "Could not get media type.\n"); |
| goto error; |
| } |
| |
| codec->time_base = ap->time_base; |
| codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| codec->width = bih->biWidth; |
| codec->height = bih->biHeight; |
| codec->pix_fmt = dshow_pixfmt(bih->biCompression, bih->biBitCount); |
| if (codec->pix_fmt == PIX_FMT_NONE) { |
| codec->codec_id = dshow_codecid(bih->biCompression); |
| if (codec->codec_id == CODEC_ID_NONE) { |
| av_log(avctx, AV_LOG_ERROR, "Unknown compression type. " |
| "Please report verbose (-v 9) debug information.\n"); |
| dshow_read_close(avctx); |
| return AVERROR_PATCHWELCOME; |
| } |
| codec->bits_per_coded_sample = bih->biBitCount; |
| } else { |
| codec->codec_id = CODEC_ID_RAWVIDEO; |
| if (bih->biCompression == BI_RGB || bih->biCompression == BI_BITFIELDS) { |
| codec->bits_per_coded_sample = bih->biBitCount; |
| codec->extradata = av_malloc(9 + FF_INPUT_BUFFER_PADDING_SIZE); |
| if (codec->extradata) { |
| codec->extradata_size = 9; |
| memcpy(codec->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; |
| } |
| |
| codec->codec_type = AVMEDIA_TYPE_AUDIO; |
| codec->sample_fmt = sample_fmt_bits_per_sample(fx->wBitsPerSample); |
| codec->codec_id = waveform_codec_id(codec->sample_fmt); |
| codec->sample_rate = fx->nSamplesPerSec; |
| codec->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, AVFormatParameters *ap) |
| { |
| struct dshow_ctx *ctx = avctx->priv_data; |
| IGraphBuilder *graph = NULL; |
| ICreateDevEnum *devenum = NULL; |
| IMediaControl *control = NULL; |
| int ret = AVERROR(EIO); |
| int r; |
| |
| if (!ctx->list_devices && !parse_device_name(avctx)) { |
| av_log(avctx, AV_LOG_ERROR, "Malformed dshow input string.\n"); |
| goto error; |
| } |
| |
| if (ctx->video_size) { |
| r = av_parse_video_size(&ctx->requested_width, &ctx->requested_height, ctx->video_size); |
| if (r < 0) { |
| av_log(avctx, AV_LOG_ERROR, "Could not parse video size '%s'.\n", ctx->video_size); |
| 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; |
| } |
| } |
| |
| CoInitialize(0); |
| |
| 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\n"); |
| dshow_cycle_devices(avctx, devenum, VideoDevice, NULL); |
| av_log(avctx, AV_LOG_INFO, "DirectShow audio devices\n"); |
| dshow_cycle_devices(avctx, devenum, AudioDevice, NULL); |
| ret = AVERROR_EXIT; |
| goto error; |
| } |
| if (ctx->list_options) { |
| if (ctx->device_name[VideoDevice]) |
| dshow_list_device_options(avctx, devenum, VideoDevice); |
| if (ctx->device_name[AudioDevice]) |
| dshow_list_device_options(avctx, devenum, AudioDevice); |
| ret = AVERROR_EXIT; |
| goto error; |
| } |
| |
| if (ctx->device_name[VideoDevice]) { |
| ret = dshow_open_device(avctx, devenum, VideoDevice); |
| if (ret < 0) |
| goto error; |
| ret = dshow_add_device(avctx, ap, VideoDevice); |
| if (ret < 0) |
| goto error; |
| } |
| if (ctx->device_name[AudioDevice]) { |
| ret = dshow_open_device(avctx, devenum, AudioDevice); |
| if (ret < 0) |
| goto error; |
| ret = dshow_add_device(avctx, ap, AudioDevice); |
| if (ret < 0) |
| goto error; |
| } |
| |
| ctx->mutex = CreateMutex(NULL, 0, NULL); |
| if (!ctx->mutex) { |
| av_log(avctx, AV_LOG_ERROR, "Could not create Mutex\n"); |
| goto error; |
| } |
| ctx->event = CreateEvent(NULL, 1, 0, NULL); |
| if (!ctx->event) { |
| 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 = 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 filter\n"); |
| goto error; |
| } |
| |
| ret = 0; |
| |
| error: |
| |
| if (ret < 0) |
| dshow_read_close(avctx); |
| |
| if (devenum) |
| ICreateDevEnum_Release(devenum); |
| |
| return ret; |
| } |
| |
| static int dshow_read_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| struct dshow_ctx *ctx = s->priv_data; |
| AVPacketList *pktl = NULL; |
| |
| while (!pktl) { |
| WaitForSingleObject(ctx->mutex, INFINITE); |
| pktl = ctx->pktl; |
| if (ctx->pktl) { |
| *pkt = ctx->pktl->pkt; |
| ctx->pktl = ctx->pktl->next; |
| av_free(pktl); |
| } |
| ResetEvent(ctx->event); |
| ReleaseMutex(ctx->mutex); |
| if (!pktl) { |
| if (s->flags & AVFMT_FLAG_NONBLOCK) { |
| return AVERROR(EAGAIN); |
| } else { |
| WaitForSingleObject(ctx->event, INFINITE); |
| } |
| } |
| } |
| |
| ctx->curbufsize -= pkt->size; |
| |
| return 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(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, 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, {.dbl = 0}, 0, INT_MAX, DEC }, |
| { "sample_size", "set audio sample size", OFFSET(sample_size), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 16, DEC }, |
| { "channels", "set number of audio channels, such as 1 or 2", OFFSET(channels), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, DEC }, |
| { "list_devices", "list available devices", OFFSET(list_devices), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1, DEC, "list_devices" }, |
| { "true", "", 0, AV_OPT_TYPE_CONST, {.dbl=1}, 0, 0, DEC, "list_devices" }, |
| { "false", "", 0, AV_OPT_TYPE_CONST, {.dbl=0}, 0, 0, DEC, "list_devices" }, |
| { "list_options", "list available options for specified device", OFFSET(list_options), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1, DEC, "list_options" }, |
| { "true", "", 0, AV_OPT_TYPE_CONST, {.dbl=1}, 0, 0, DEC, "list_options" }, |
| { "false", "", 0, AV_OPT_TYPE_CONST, {.dbl=0}, 0, 0, DEC, "list_options" }, |
| { "video_device_number", "set video device number for devices with same name (starts at 0)", OFFSET(video_device_number), AV_OPT_TYPE_INT, {.dbl = 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, {.dbl = 0}, 0, INT_MAX, DEC }, |
| { NULL }, |
| }; |
| |
| static const AVClass dshow_class = { |
| .class_name = "DirectShow indev", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| AVInputFormat ff_dshow_demuxer = { |
| "dshow", |
| NULL_IF_CONFIG_SMALL("DirectShow capture"), |
| sizeof(struct dshow_ctx), |
| NULL, |
| dshow_read_header, |
| dshow_read_packet, |
| dshow_read_close, |
| .flags = AVFMT_NOFILE, |
| .priv_class = &dshow_class, |
| }; |
