1341 lines
49 KiB
C
Executable File
1341 lines
49 KiB
C
Executable File
/*
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* Directshow capture interface
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* Copyright (c) 2010 Ramiro Polla
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "dshow_capture.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/opt.h"
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#include "libavformat/internal.h"
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#include "libavformat/riff.h"
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#include "avdevice.h"
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#include "libavcodec/raw.h"
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#include "objidl.h"
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#include "shlwapi.h"
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static enum AVPixelFormat dshow_pixfmt(DWORD biCompression, WORD biBitCount)
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{
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switch(biCompression) {
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case BI_BITFIELDS:
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case BI_RGB:
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switch(biBitCount) { /* 1-8 are untested */
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case 1:
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return AV_PIX_FMT_MONOWHITE;
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case 4:
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return AV_PIX_FMT_RGB4;
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case 8:
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return AV_PIX_FMT_RGB8;
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case 16:
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return AV_PIX_FMT_RGB555;
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case 24:
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return AV_PIX_FMT_BGR24;
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case 32:
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return AV_PIX_FMT_0RGB32;
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}
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}
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return avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), biCompression); // all others
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}
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static int
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dshow_read_close(AVFormatContext *s)
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{
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struct dshow_ctx *ctx = s->priv_data;
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AVPacketList *pktl;
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if (ctx->control) {
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IMediaControl_Stop(ctx->control);
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IMediaControl_Release(ctx->control);
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}
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if (ctx->media_event)
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IMediaEvent_Release(ctx->media_event);
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if (ctx->graph) {
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IEnumFilters *fenum;
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int r;
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r = IGraphBuilder_EnumFilters(ctx->graph, &fenum);
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if (r == S_OK) {
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IBaseFilter *f;
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IEnumFilters_Reset(fenum);
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while (IEnumFilters_Next(fenum, 1, &f, NULL) == S_OK) {
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if (IGraphBuilder_RemoveFilter(ctx->graph, f) == S_OK)
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IEnumFilters_Reset(fenum); /* When a filter is removed,
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* the list must be reset. */
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IBaseFilter_Release(f);
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}
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IEnumFilters_Release(fenum);
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}
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IGraphBuilder_Release(ctx->graph);
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}
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if (ctx->capture_pin[VideoDevice])
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libAVPin_Release(ctx->capture_pin[VideoDevice]);
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if (ctx->capture_pin[AudioDevice])
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libAVPin_Release(ctx->capture_pin[AudioDevice]);
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if (ctx->capture_filter[VideoDevice])
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libAVFilter_Release(ctx->capture_filter[VideoDevice]);
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if (ctx->capture_filter[AudioDevice])
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libAVFilter_Release(ctx->capture_filter[AudioDevice]);
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if (ctx->device_pin[VideoDevice])
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IPin_Release(ctx->device_pin[VideoDevice]);
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if (ctx->device_pin[AudioDevice])
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IPin_Release(ctx->device_pin[AudioDevice]);
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if (ctx->device_filter[VideoDevice])
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IBaseFilter_Release(ctx->device_filter[VideoDevice]);
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if (ctx->device_filter[AudioDevice])
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IBaseFilter_Release(ctx->device_filter[AudioDevice]);
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av_freep(&ctx->device_name[0]);
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av_freep(&ctx->device_name[1]);
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av_freep(&ctx->device_unique_name[0]);
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av_freep(&ctx->device_unique_name[1]);
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if(ctx->mutex)
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CloseHandle(ctx->mutex);
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if(ctx->event[0])
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CloseHandle(ctx->event[0]);
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if(ctx->event[1])
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CloseHandle(ctx->event[1]);
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pktl = ctx->pktl;
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while (pktl) {
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AVPacketList *next = pktl->next;
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av_packet_unref(&pktl->pkt);
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av_free(pktl);
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pktl = next;
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}
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CoUninitialize();
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return 0;
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}
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static char *dup_wchar_to_utf8(wchar_t *w)
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{
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char *s = NULL;
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int l = WideCharToMultiByte(CP_UTF8, 0, w, -1, 0, 0, 0, 0);
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s = av_malloc(l);
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if (s)
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WideCharToMultiByte(CP_UTF8, 0, w, -1, s, l, 0, 0);
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return s;
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}
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static int shall_we_drop(AVFormatContext *s, int index, enum dshowDeviceType devtype)
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{
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struct dshow_ctx *ctx = s->priv_data;
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static const uint8_t dropscore[] = {62, 75, 87, 100};
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const int ndropscores = FF_ARRAY_ELEMS(dropscore);
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unsigned int buffer_fullness = (ctx->curbufsize[index]*100)/s->max_picture_buffer;
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const char *devtypename = (devtype == VideoDevice) ? "video" : "audio";
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if(dropscore[++ctx->video_frame_num%ndropscores] <= buffer_fullness) {
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av_log(s, AV_LOG_ERROR,
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"real-time buffer [%s] [%s input] too full or near too full (%d%% of size: %d [rtbufsize parameter])! frame dropped!\n",
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ctx->device_name[devtype], devtypename, buffer_fullness, s->max_picture_buffer);
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return 1;
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}
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return 0;
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}
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static void
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callback(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time, enum dshowDeviceType devtype)
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{
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AVFormatContext *s = priv_data;
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struct dshow_ctx *ctx = s->priv_data;
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AVPacketList **ppktl, *pktl_next;
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// dump_videohdr(s, vdhdr);
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WaitForSingleObject(ctx->mutex, INFINITE);
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if(shall_we_drop(s, index, devtype))
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goto fail;
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pktl_next = av_mallocz(sizeof(AVPacketList));
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if(!pktl_next)
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goto fail;
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if(av_new_packet(&pktl_next->pkt, buf_size) < 0) {
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av_free(pktl_next);
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goto fail;
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}
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pktl_next->pkt.stream_index = index;
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pktl_next->pkt.pts = time;
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memcpy(pktl_next->pkt.data, buf, buf_size);
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for(ppktl = &ctx->pktl ; *ppktl ; ppktl = &(*ppktl)->next);
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*ppktl = pktl_next;
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ctx->curbufsize[index] += buf_size;
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SetEvent(ctx->event[1]);
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ReleaseMutex(ctx->mutex);
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return;
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fail:
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ReleaseMutex(ctx->mutex);
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return;
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}
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/**
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* Cycle through available devices using the device enumerator devenum,
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* retrieve the device with type specified by devtype and return the
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* pointer to the object found in *pfilter.
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* If pfilter is NULL, list all device names.
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*/
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static int
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dshow_cycle_devices(AVFormatContext *avctx, ICreateDevEnum *devenum,
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enum dshowDeviceType devtype, enum dshowSourceFilterType sourcetype,
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IBaseFilter **pfilter, char **device_unique_name)
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{
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struct dshow_ctx *ctx = avctx->priv_data;
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IBaseFilter *device_filter = NULL;
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IEnumMoniker *classenum = NULL;
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IMoniker *m = NULL;
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const char *device_name = ctx->device_name[devtype];
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int skip = (devtype == VideoDevice) ? ctx->video_device_number
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: ctx->audio_device_number;
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int r;
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const GUID *device_guid[2] = { &CLSID_VideoInputDeviceCategory,
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&CLSID_AudioInputDeviceCategory };
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const char *devtypename = (devtype == VideoDevice) ? "video" : "audio only";
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const char *sourcetypename = (sourcetype == VideoSourceDevice) ? "video" : "audio";
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r = ICreateDevEnum_CreateClassEnumerator(devenum, device_guid[sourcetype],
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(IEnumMoniker **) &classenum, 0);
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if (r != S_OK) {
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av_log(avctx, AV_LOG_ERROR, "Could not enumerate %s devices (or none found).\n",
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devtypename);
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return AVERROR(EIO);
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}
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while (!device_filter && IEnumMoniker_Next(classenum, 1, &m, NULL) == S_OK) {
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IPropertyBag *bag = NULL;
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char *friendly_name = NULL;
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char *unique_name = NULL;
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VARIANT var;
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IBindCtx *bind_ctx = NULL;
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LPOLESTR olestr = NULL;
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LPMALLOC co_malloc = NULL;
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int i;
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r = CoGetMalloc(1, &co_malloc);
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if (r != S_OK)
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goto fail1;
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r = CreateBindCtx(0, &bind_ctx);
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if (r != S_OK)
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goto fail1;
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/* GetDisplayname works for both video and audio, DevicePath doesn't */
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r = IMoniker_GetDisplayName(m, bind_ctx, NULL, &olestr);
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if (r != S_OK)
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goto fail1;
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unique_name = dup_wchar_to_utf8(olestr);
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/* replace ':' with '_' since we use : to delineate between sources */
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for (i = 0; i < strlen(unique_name); i++) {
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if (unique_name[i] == ':')
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unique_name[i] = '_';
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}
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r = IMoniker_BindToStorage(m, 0, 0, &IID_IPropertyBag, (void *) &bag);
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if (r != S_OK)
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goto fail1;
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var.vt = VT_BSTR;
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r = IPropertyBag_Read(bag, L"FriendlyName", &var, NULL);
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if (r != S_OK)
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goto fail1;
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friendly_name = dup_wchar_to_utf8(var.bstrVal);
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if (pfilter) {
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if (strcmp(device_name, friendly_name) && strcmp(device_name, unique_name))
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goto fail1;
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if (!skip--) {
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r = IMoniker_BindToObject(m, 0, 0, &IID_IBaseFilter, (void *) &device_filter);
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if (r != S_OK) {
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av_log(avctx, AV_LOG_ERROR, "Unable to BindToObject for %s\n", device_name);
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goto fail1;
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}
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*device_unique_name = unique_name;
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unique_name = NULL;
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// success, loop will end now
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}
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} else {
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av_log(avctx, AV_LOG_INFO, " \"%s\"\n", friendly_name);
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av_log(avctx, AV_LOG_INFO, " Alternative name \"%s\"\n", unique_name);
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}
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fail1:
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if (olestr && co_malloc)
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IMalloc_Free(co_malloc, olestr);
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if (bind_ctx)
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IBindCtx_Release(bind_ctx);
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av_freep(&friendly_name);
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av_freep(&unique_name);
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if (bag)
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IPropertyBag_Release(bag);
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IMoniker_Release(m);
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}
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IEnumMoniker_Release(classenum);
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if (pfilter) {
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if (!device_filter) {
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av_log(avctx, AV_LOG_ERROR, "Could not find %s device with name [%s] among source devices of type %s.\n",
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devtypename, device_name, sourcetypename);
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return AVERROR(EIO);
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}
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*pfilter = device_filter;
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}
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return 0;
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}
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/**
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* Cycle through available formats using the specified pin,
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* try to set parameters specified through AVOptions and if successful
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* return 1 in *pformat_set.
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* If pformat_set is NULL, list all pin capabilities.
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*/
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static void
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dshow_cycle_formats(AVFormatContext *avctx, enum dshowDeviceType devtype,
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IPin *pin, int *pformat_set)
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{
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struct dshow_ctx *ctx = avctx->priv_data;
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IAMStreamConfig *config = NULL;
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AM_MEDIA_TYPE *type = NULL;
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int format_set = 0;
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void *caps = NULL;
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int i, n, size, r;
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|
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if (IPin_QueryInterface(pin, &IID_IAMStreamConfig, (void **) &config) != S_OK)
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return;
|
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if (IAMStreamConfig_GetNumberOfCapabilities(config, &n, &size) != S_OK)
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|
goto end;
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|
|
caps = av_malloc(size);
|
|
if (!caps)
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|
goto end;
|
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|
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for (i = 0; i < n && !format_set; i++) {
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r = IAMStreamConfig_GetStreamCaps(config, i, &type, (void *) caps);
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if (r != S_OK)
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goto next;
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#if DSHOWDEBUG
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ff_print_AM_MEDIA_TYPE(type);
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#endif
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|
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if (devtype == VideoDevice) {
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VIDEO_STREAM_CONFIG_CAPS *vcaps = caps;
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BITMAPINFOHEADER *bih;
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int64_t *fr;
|
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const AVCodecTag *const tags[] = { avformat_get_riff_video_tags(), NULL };
|
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#if DSHOWDEBUG
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ff_print_VIDEO_STREAM_CONFIG_CAPS(vcaps);
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#endif
|
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if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo)) {
|
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VIDEOINFOHEADER *v = (void *) type->pbFormat;
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fr = &v->AvgTimePerFrame;
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bih = &v->bmiHeader;
|
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} else if (IsEqualGUID(&type->formattype, &FORMAT_VideoInfo2)) {
|
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VIDEOINFOHEADER2 *v = (void *) type->pbFormat;
|
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fr = &v->AvgTimePerFrame;
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bih = &v->bmiHeader;
|
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} else {
|
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goto next;
|
|
}
|
|
if (!pformat_set) {
|
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enum AVPixelFormat pix_fmt = dshow_pixfmt(bih->biCompression, bih->biBitCount);
|
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if (pix_fmt == AV_PIX_FMT_NONE) {
|
|
enum AVCodecID codec_id = av_codec_get_id(tags, bih->biCompression);
|
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AVCodec *codec = avcodec_find_decoder(codec_id);
|
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if (codec_id == AV_CODEC_ID_NONE || !codec) {
|
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av_log(avctx, AV_LOG_INFO, " unknown compression type 0x%X", (int) bih->biCompression);
|
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} else {
|
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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",
|
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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);
|
|
|
|
type.pbFormat = NULL;
|
|
|
|
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);
|
|
ret = AVERROR_PATCHWELCOME;
|
|
goto error;
|
|
}
|
|
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;
|
|
if (par->height < 0) {
|
|
par->height *= -1;
|
|
} else {
|
|
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:
|
|
if (type.pbFormat)
|
|
CoTaskMemFree(type.pbFormat);
|
|
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->url);
|
|
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,
|
|
};
|