961 lines
29 KiB
C
961 lines
29 KiB
C
/*
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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 "libavutil/parseutils.h"
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#include "libavutil/opt.h"
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#include "avdevice.h"
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#include "dshow.h"
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struct dshow_ctx {
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const AVClass *class;
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IGraphBuilder *graph;
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char *device_name[2];
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int list_options;
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int list_devices;
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IBaseFilter *device_filter[2];
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IPin *device_pin[2];
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libAVFilter *capture_filter[2];
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libAVPin *capture_pin[2];
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HANDLE mutex;
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HANDLE event;
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AVPacketList *pktl;
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unsigned int curbufsize;
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unsigned int video_frame_num;
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IMediaControl *control;
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char *video_size;
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char *framerate;
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int requested_width;
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int requested_height;
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AVRational requested_framerate;
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int sample_rate;
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int sample_size;
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int channels;
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};
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static enum PixelFormat dshow_pixfmt(DWORD biCompression, WORD biBitCount)
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{
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switch(biCompression) {
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case MKTAG('U', 'Y', 'V', 'Y'):
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return PIX_FMT_UYVY422;
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case MKTAG('Y', 'U', 'Y', '2'):
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return PIX_FMT_YUYV422;
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case MKTAG('I', '4', '2', '0'):
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return PIX_FMT_YUV420P;
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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 PIX_FMT_MONOWHITE;
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case 4:
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return PIX_FMT_RGB4;
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case 8:
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return PIX_FMT_RGB8;
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case 16:
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return PIX_FMT_RGB555;
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case 24:
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return PIX_FMT_BGR24;
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case 32:
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return PIX_FMT_RGB32;
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}
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}
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return PIX_FMT_NONE;
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}
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static enum CodecID dshow_codecid(DWORD biCompression)
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{
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switch(biCompression) {
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case MKTAG('d', 'v', 's', 'd'):
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return CODEC_ID_DVVIDEO;
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case MKTAG('M', 'J', 'P', 'G'):
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case MKTAG('m', 'j', 'p', 'g'):
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return CODEC_ID_MJPEG;
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}
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return CODEC_ID_NONE;
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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->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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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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if (ctx->device_name[0])
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av_free(ctx->device_name[0]);
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if (ctx->device_name[1])
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av_free(ctx->device_name[1]);
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if(ctx->mutex)
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CloseHandle(ctx->mutex);
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if(ctx->event)
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CloseHandle(ctx->event);
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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_destruct_packet(&pktl->pkt);
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av_free(pktl);
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pktl = next;
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}
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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)
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{
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struct dshow_ctx *ctx = s->priv_data;
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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*100)/s->max_picture_buffer;
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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 %d%% full! frame dropped!\n", buffer_fullness);
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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)
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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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if(shall_we_drop(s))
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return;
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WaitForSingleObject(ctx->mutex, INFINITE);
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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 += buf_size;
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SetEvent(ctx->event);
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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, IBaseFilter **pfilter)
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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 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";
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r = ICreateDevEnum_CreateClassEnumerator(devenum, device_guid[devtype],
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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.\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 *buf = NULL;
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VARIANT var;
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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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buf = dup_wchar_to_utf8(var.bstrVal);
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if (pfilter) {
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if (strcmp(device_name, buf))
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goto fail1;
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IMoniker_BindToObject(m, 0, 0, &IID_IBaseFilter, (void *) &device_filter);
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} else {
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av_log(avctx, AV_LOG_INFO, " \"%s\"\n", buf);
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}
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fail1:
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if (buf)
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av_free(buf);
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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.\n",
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devtypename);
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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;
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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);
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if (!caps)
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goto end;
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for (i = 0; i < n && !format_set; i++) {
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IAMStreamConfig_GetStreamCaps(config, i, &type, (void *) caps);
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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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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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#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;
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}
|
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if (!pformat_set) {
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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,
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1e7 / vcaps->MinFrameInterval,
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vcaps->MaxOutputSize.cx, vcaps->MaxOutputSize.cy,
|
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1e7 / vcaps->MaxFrameInterval);
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continue;
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}
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if (ctx->framerate) {
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int64_t framerate = ((int64_t) ctx->requested_framerate.den*10000000)
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/ ctx->requested_framerate.num;
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if (framerate > vcaps->MaxFrameInterval ||
|
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framerate < vcaps->MinFrameInterval)
|
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goto next;
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*fr = framerate;
|
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}
|
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if (ctx->video_size) {
|
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if (ctx->requested_width > vcaps->MaxOutputSize.cx ||
|
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ctx->requested_width < vcaps->MinOutputSize.cx ||
|
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ctx->requested_height > vcaps->MaxOutputSize.cy ||
|
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ctx->requested_height < vcaps->MinOutputSize.cy)
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goto next;
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bih->biWidth = ctx->requested_width;
|
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bih->biHeight = ctx->requested_height;
|
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}
|
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} else {
|
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AUDIO_STREAM_CONFIG_CAPS *acaps = caps;
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WAVEFORMATEX *fx;
|
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#if DSHOWDEBUG
|
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ff_print_AUDIO_STREAM_CONFIG_CAPS(acaps);
|
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#endif
|
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if (IsEqualGUID(&type->formattype, &FORMAT_WaveFormatEx)) {
|
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fx = (void *) type->pbFormat;
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} else {
|
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goto next;
|
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}
|
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if (!pformat_set) {
|
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av_log(avctx, AV_LOG_INFO, " min ch=%lu bits=%lu rate=%6lu max ch=%lu bits=%lu rate=%6lu\n",
|
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acaps->MinimumChannels, acaps->MinimumBitsPerSample, acaps->MinimumSampleFrequency,
|
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acaps->MaximumChannels, acaps->MaximumBitsPerSample, acaps->MaximumSampleFrequency);
|
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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)
|
|
{
|
|
IBaseFilter *device_filter = NULL;
|
|
int r;
|
|
|
|
if ((r = dshow_cycle_devices(avctx, devenum, devtype, &device_filter)) < 0)
|
|
return r;
|
|
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 = av_new_stream(avctx, devtype);
|
|
if (!st) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto error;
|
|
}
|
|
|
|
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) {
|
|
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;
|
|
}
|
|
|
|
av_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), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
|
{ "framerate", "set video frame rate", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
|
{ "sample_rate", "set audio sample rate", OFFSET(sample_rate), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, DEC },
|
|
{ "sample_size", "set audio sample size", OFFSET(sample_size), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 16, DEC },
|
|
{ "channels", "set number of audio channels, such as 1 or 2", OFFSET(channels), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, DEC },
|
|
{ "list_devices", "list available devices", OFFSET(list_devices), FF_OPT_TYPE_INT, {.dbl=0}, 0, 1, DEC, "list_devices" },
|
|
{ "true", "", 0, FF_OPT_TYPE_CONST, {.dbl=1}, 0, 0, DEC, "list_devices" },
|
|
{ "false", "", 0, FF_OPT_TYPE_CONST, {.dbl=0}, 0, 0, DEC, "list_devices" },
|
|
{ "list_options", "list available options for specified device", OFFSET(list_options), FF_OPT_TYPE_INT, {.dbl=0}, 0, 1, DEC, "list_options" },
|
|
{ "true", "", 0, FF_OPT_TYPE_CONST, {.dbl=1}, 0, 0, DEC, "list_options" },
|
|
{ "false", "", 0, FF_OPT_TYPE_CONST, {.dbl=0}, 0, 0, DEC, "list_options" },
|
|
{ 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,
|
|
};
|