diff options
| -rwxr-xr-x | configure | 4 | ||||
| -rw-r--r-- | libavdevice/Makefile | 1 | ||||
| -rw-r--r-- | libavdevice/alldevices.c | 1 | ||||
| -rw-r--r-- | libavdevice/vfwcap.c | 460 |
4 files changed, 466 insertions, 0 deletions
@@ -836,6 +836,8 @@ rtsp_demuxer_deps="sdp_demuxer" sdp_demuxer_deps="rtp_protocol mpegts_demuxer" v4l2_demuxer_deps="linux_videodev2_h" v4l_demuxer_deps="linux_videodev_h" +vfwcap_demuxer_deps="capCreateCaptureWindow" +vfwcap_demuxer_extralibs="-lvfw32" x11_grab_device_demuxer_deps="x11grab XShmCreateImage" x11_grab_device_demuxer_extralibs="-lX11 -lXext" @@ -1753,6 +1755,8 @@ EOF check_header linux/videodev.h check_header linux/videodev2.h +check_func2 "windows.h vfw.h" capCreateCaptureWindow -lvfw32 + # check for ioctl_meteor.h, ioctl_bt848.h and alternatives { check_header dev/bktr/ioctl_meteor.h && check_header dev/bktr/ioctl_bt848.h; } || diff --git a/libavdevice/Makefile b/libavdevice/Makefile index 9fca3b0467..fb7c22b3b6 100644 --- a/libavdevice/Makefile +++ b/libavdevice/Makefile @@ -14,6 +14,7 @@ OBJS-$(CONFIG_OSS_DEMUXER) += audio.o OBJS-$(CONFIG_OSS_MUXER) += audio.o OBJS-$(CONFIG_V4L2_DEMUXER) += v4l2.o OBJS-$(CONFIG_V4L_DEMUXER) += v4l.o +OBJS-$(CONFIG_VFWCAP_DEMUXER) += vfwcap.o OBJS-$(CONFIG_X11_GRAB_DEVICE_DEMUXER) += x11grab.o # external libraries diff --git a/libavdevice/alldevices.c b/libavdevice/alldevices.c index 0334be8c57..4e97a54136 100644 --- a/libavdevice/alldevices.c +++ b/libavdevice/alldevices.c @@ -43,6 +43,7 @@ void avdevice_register_all(void) REGISTER_MUXDEMUX (OSS, oss); REGISTER_DEMUXER (V4L2, v4l2); REGISTER_DEMUXER (V4L, v4l); + REGISTER_DEMUXER (VFWCAP, vfwcap); REGISTER_DEMUXER (X11_GRAB_DEVICE, x11_grab_device); /* external libraries */ diff --git a/libavdevice/vfwcap.c b/libavdevice/vfwcap.c new file mode 100644 index 0000000000..aa3a788d42 --- /dev/null +++ b/libavdevice/vfwcap.c @@ -0,0 +1,460 @@ +/* + * VFW capture interface + * Copyright (c) 2006-2008 Ramiro Polla. + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "avformat.h" +#include <vfw.h> +#include <windows.h> + +//#define DEBUG_VFW + +/* Defines for VFW missing from MinGW. + * Remove this when MinGW incorporates them. */ +#define WM_CAP_START (0x0400) +#define WM_CAP_SET_CALLBACK_VIDEOSTREAM (WM_CAP_START + 6) +#define WM_CAP_DRIVER_CONNECT (WM_CAP_START + 10) +#define WM_CAP_DRIVER_DISCONNECT (WM_CAP_START + 11) +#define WM_CAP_GET_VIDEOFORMAT (WM_CAP_START + 44) +#define WM_CAP_SET_VIDEOFORMAT (WM_CAP_START + 45) +#define WM_CAP_SET_PREVIEW (WM_CAP_START + 50) +#define WM_CAP_SET_OVERLAY (WM_CAP_START + 51) +#define WM_CAP_SEQUENCE_NOFILE (WM_CAP_START + 63) +#define WM_CAP_SET_SEQUENCE_SETUP (WM_CAP_START + 64) +#define WM_CAP_GET_SEQUENCE_SETUP (WM_CAP_START + 65) + +#define HWND_MESSAGE ((HWND)-3) + +#define BI_RGB 0 + +typedef struct videohdr_tag { + LPBYTE lpData; + DWORD dwBufferLength; + DWORD dwBytesUsed; + DWORD dwTimeCaptured; + DWORD dwUser; + DWORD dwFlags; + DWORD_PTR dwReserved[4]; +} VIDEOHDR, NEAR *PVIDEOHDR, FAR * LPVIDEOHDR; + +typedef struct { + DWORD dwRequestMicroSecPerFrame; + BOOL fMakeUserHitOKToCapture; + UINT wPercentDropForError; + BOOL fYield; + DWORD dwIndexSize; + UINT wChunkGranularity; + BOOL fUsingDOSMemory; + UINT wNumVideoRequested; + BOOL fCaptureAudio; + UINT wNumAudioRequested; + UINT vKeyAbort; + BOOL fAbortLeftMouse; + BOOL fAbortRightMouse; + BOOL fLimitEnabled; + UINT wTimeLimit; + BOOL fMCIControl; + BOOL fStepMCIDevice; + DWORD dwMCIStartTime; + DWORD dwMCIStopTime; + BOOL fStepCaptureAt2x; + UINT wStepCaptureAverageFrames; + DWORD dwAudioBufferSize; + BOOL fDisableWriteCache; + UINT AVStreamMaster; +} CAPTUREPARMS; +/* End of missing MinGW defines */ + +struct vfw_ctx { + HWND hwnd; + HANDLE mutex; + HANDLE event; + AVPacketList *pktl; + AVFormatContext *s; + unsigned int curbufsize; + unsigned int frame_num; +}; + +static enum PixelFormat vfw_pixfmt(DWORD biCompression, WORD biBitCount) +{ + switch(biCompression) { + case MKTAG('Y', 'U', 'Y', '2'): + return PIX_FMT_YUYV422; + case BI_RGB: + switch(biBitCount) { /* 1-8 are untested */ + case 1: + return PIX_FMT_MONOWHITE; + case 4: + return PIX_FMT_RGB4; + case 8: + return PIX_FMT_RGB8; + case 16: + return PIX_FMT_RGB555; + case 24: + return PIX_FMT_BGR24; + case 32: + return PIX_FMT_RGB32; + } + } + return -1; +} + +#define dstruct(pctx, sname, var, type) \ + av_log(pctx, AV_LOG_DEBUG, #var":\t%"type"\n", sname->var) + +static void dump_captureparms(AVFormatContext *s, CAPTUREPARMS *cparms) +{ + av_log(s, AV_LOG_DEBUG, "CAPTUREPARMS\n"); + dstruct(s, cparms, dwRequestMicroSecPerFrame, "lu"); + dstruct(s, cparms, fMakeUserHitOKToCapture, "d"); + dstruct(s, cparms, wPercentDropForError, "u"); + dstruct(s, cparms, fYield, "d"); + dstruct(s, cparms, dwIndexSize, "lu"); + dstruct(s, cparms, wChunkGranularity, "u"); + dstruct(s, cparms, fUsingDOSMemory, "d"); + dstruct(s, cparms, wNumVideoRequested, "u"); + dstruct(s, cparms, fCaptureAudio, "d"); + dstruct(s, cparms, wNumAudioRequested, "u"); + dstruct(s, cparms, vKeyAbort, "u"); + dstruct(s, cparms, fAbortLeftMouse, "d"); + dstruct(s, cparms, fAbortRightMouse, "d"); + dstruct(s, cparms, fLimitEnabled, "d"); + dstruct(s, cparms, wTimeLimit, "u"); + dstruct(s, cparms, fMCIControl, "d"); + dstruct(s, cparms, fStepMCIDevice, "d"); + dstruct(s, cparms, dwMCIStartTime, "lu"); + dstruct(s, cparms, dwMCIStopTime, "lu"); + dstruct(s, cparms, fStepCaptureAt2x, "d"); + dstruct(s, cparms, wStepCaptureAverageFrames, "u"); + dstruct(s, cparms, dwAudioBufferSize, "lu"); + dstruct(s, cparms, fDisableWriteCache, "d"); + dstruct(s, cparms, AVStreamMaster, "u"); +} + +static void dump_videohdr(AVFormatContext *s, VIDEOHDR *vhdr) +{ +#ifdef DEBUG_VFW + av_log(s, AV_LOG_DEBUG, "VIDEOHDR\n"); + dstruct(s, vhdr, lpData, "p"); + dstruct(s, vhdr, dwBufferLength, "lu"); + dstruct(s, vhdr, dwBytesUsed, "lu"); + dstruct(s, vhdr, dwTimeCaptured, "lu"); + dstruct(s, vhdr, dwUser, "lu"); + dstruct(s, vhdr, dwFlags, "lu"); + dstruct(s, vhdr, dwReserved[0], "lu"); + dstruct(s, vhdr, dwReserved[1], "lu"); + dstruct(s, vhdr, dwReserved[2], "lu"); + dstruct(s, vhdr, dwReserved[3], "lu"); +#endif +} + +static void dump_bih(AVFormatContext *s, BITMAPINFOHEADER *bih) +{ + av_log(s, AV_LOG_DEBUG, "BITMAPINFOHEADER\n"); + dstruct(s, bih, biSize, "lu"); + dstruct(s, bih, biWidth, "ld"); + dstruct(s, bih, biHeight, "ld"); + dstruct(s, bih, biPlanes, "d"); + dstruct(s, bih, biBitCount, "d"); + dstruct(s, bih, biCompression, "lu"); + av_log(s, AV_LOG_DEBUG, " biCompression:\t\"%.4s\"\n", + (char*) &bih->biCompression); + dstruct(s, bih, biSizeImage, "lu"); + dstruct(s, bih, biXPelsPerMeter, "lu"); + dstruct(s, bih, biYPelsPerMeter, "lu"); + dstruct(s, bih, biClrUsed, "lu"); + dstruct(s, bih, biClrImportant, "lu"); +} + +static int shall_we_drop(struct vfw_ctx *ctx) +{ + AVFormatContext *s = ctx->s; + const uint8_t dropscore[] = {62, 75, 87, 100}; + const int ndropscores = sizeof(dropscore)/sizeof(dropscore[0]); + unsigned int buffer_fullness = (ctx->curbufsize*100)/s->max_picture_buffer; + + if(dropscore[++ctx->frame_num%ndropscores] < buffer_fullness) { + av_log(ctx->s, AV_LOG_ERROR, + "real-time buffer %d%% full! frame dropped!\n", buffer_fullness); + return 1; + } + + return 0; +} + +static LRESULT CALLBACK videostream_cb(HWND hwnd, LPVIDEOHDR vdhdr) +{ + struct vfw_ctx *ctx; + AVPacketList **ppktl, *pktl_next; + + ctx = (struct vfw_ctx *) GetWindowLongPtr(hwnd, GWLP_USERDATA); + + dump_videohdr(ctx->s, vdhdr); + + if(shall_we_drop(ctx)) + return FALSE; + + WaitForSingleObject(ctx->mutex, INFINITE); + + pktl_next = av_mallocz(sizeof(AVPacketList)); + if(!pktl_next) + goto fail; + + if(av_new_packet(&pktl_next->pkt, vdhdr->dwBytesUsed) < 0) { + av_free(pktl_next); + goto fail; + } + + pktl_next->pkt.pts = vdhdr->dwTimeCaptured; + memcpy(pktl_next->pkt.data, vdhdr->lpData, vdhdr->dwBytesUsed); + + for(ppktl = &ctx->pktl ; *ppktl ; ppktl = &(*ppktl)->next); + *ppktl = pktl_next; + + ctx->curbufsize += vdhdr->dwBytesUsed; + + SetEvent(ctx->event); + ReleaseMutex(ctx->mutex); + + return TRUE; +fail: + ReleaseMutex(ctx->mutex); + return FALSE; +} + +static int vfw_read_close(AVFormatContext *s); + +static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap) +{ + struct vfw_ctx *ctx = s->priv_data; + AVCodecContext *codec; + AVStream *st; + int devnum; + int bisize; + BITMAPINFO *bi; + CAPTUREPARMS cparms; + DWORD biCompression; + WORD biBitCount; + int width; + int height; + int ret; + + if(!ap->time_base.den) { + av_log(s, AV_LOG_ERROR, "A time base must be specified.\n"); + return AVERROR_IO; + } + + ctx->s = s; + + ctx->hwnd = capCreateCaptureWindow(NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, 0); + if(!ctx->hwnd) { + av_log(s, AV_LOG_ERROR, "Could not create capture window.\n"); + return AVERROR_IO; + } + + /* If atoi fails, devnum==0 and the default device is used */ + devnum = atoi(s->filename); + + ret = SendMessage(ctx->hwnd, WM_CAP_DRIVER_CONNECT, devnum, 0); + if(!ret) { + av_log(s, AV_LOG_ERROR, "Could not connect to device.\n"); + DestroyWindow(ctx->hwnd); + return AVERROR(ENODEV); + } + + SendMessage(ctx->hwnd, WM_CAP_SET_OVERLAY, 0, 0); + SendMessage(ctx->hwnd, WM_CAP_SET_PREVIEW, 0, 0); + + ret = SendMessage(ctx->hwnd, WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, + (LPARAM) videostream_cb); + if(!ret) { + av_log(s, AV_LOG_ERROR, "Could not set video stream callback.\n"); + vfw_read_close(s); + return AVERROR_IO; + } + + SetWindowLongPtr(ctx->hwnd, GWLP_USERDATA, (LONG_PTR) ctx); + + st = av_new_stream(s, 0); + if(!st) { + vfw_read_close(s); + return AVERROR_NOMEM; + } + + /* Set video format */ + bisize = SendMessage(ctx->hwnd, WM_CAP_GET_VIDEOFORMAT, 0, 0); + if(!bisize) { + vfw_read_close(s); + return AVERROR_IO; + } + bi = av_malloc(bisize); + if(!bi) { + vfw_read_close(s); + return AVERROR_NOMEM; + } + ret = SendMessage(ctx->hwnd, WM_CAP_GET_VIDEOFORMAT, bisize, (LPARAM) bi); + if(!ret) { + av_free(bi); + vfw_read_close(s); + return AVERROR_IO; + } + + dump_bih(s, &bi->bmiHeader); + + width = ap->width ? ap->width : bi->bmiHeader.biWidth ; + height = ap->height ? ap->height : bi->bmiHeader.biHeight; + bi->bmiHeader.biWidth = width ; + bi->bmiHeader.biHeight = height; + + ret = SendMessage(ctx->hwnd, WM_CAP_SET_VIDEOFORMAT, bisize, (LPARAM) bi); + if(!ret) { + av_log(s, AV_LOG_ERROR, "Could not set Video Format.\n"); + av_free(bi); + vfw_read_close(s); + return AVERROR_IO; + } + + biCompression = bi->bmiHeader.biCompression; + biBitCount = bi->bmiHeader.biBitCount; + + av_free(bi); + + /* Set sequence setup */ + ret = SendMessage(ctx->hwnd, WM_CAP_GET_SEQUENCE_SETUP, sizeof(cparms), + (LPARAM) &cparms); + if(!ret) { + vfw_read_close(s); + return AVERROR_IO; + } + + dump_captureparms(s, &cparms); + + cparms.fYield = 1; // Spawn a background thread + cparms.dwRequestMicroSecPerFrame = + (ap->time_base.num*1000000) / ap->time_base.den; + cparms.fAbortLeftMouse = 0; + cparms.fAbortRightMouse = 0; + cparms.fCaptureAudio = 0; + cparms.vKeyAbort = 0; + + ret = SendMessage(ctx->hwnd, WM_CAP_SET_SEQUENCE_SETUP, sizeof(cparms), + (LPARAM) &cparms); + if(!ret) { + vfw_read_close(s); + return AVERROR_IO; + } + + codec = st->codec; + codec->time_base = ap->time_base; + codec->codec_type = CODEC_TYPE_VIDEO; + codec->width = width; + codec->height = height; + codec->codec_id = CODEC_ID_RAWVIDEO; + codec->pix_fmt = vfw_pixfmt(biCompression, biBitCount); + if(biCompression == BI_RGB) + codec->bits_per_sample = biBitCount; + + av_set_pts_info(st, 32, 1, 1000); + + if(codec->pix_fmt == -1) { + av_log(s, AV_LOG_ERROR, "Unknown compression type." + "Please report verbose (-v 99) debug information.\n"); + vfw_read_close(s); + return AVERROR_PATCHWELCOME; + } + + ctx->mutex = CreateMutex(NULL, 0, NULL); + if(!ctx->mutex) { + av_log(s, AV_LOG_ERROR, "Could not create Mutex.\n" ); + vfw_read_close(s); + return AVERROR_IO; + } + ctx->event = CreateEvent(NULL, 1, 0, NULL); + if(!ctx->event) { + av_log(s, AV_LOG_ERROR, "Could not create Event.\n" ); + vfw_read_close(s); + return AVERROR_IO; + } + + ret = SendMessage(ctx->hwnd, WM_CAP_SEQUENCE_NOFILE, 0, 0); + if(!ret) { + av_log(s, AV_LOG_ERROR, "Could not start capture sequence.\n" ); + vfw_read_close(s); + return AVERROR_IO; + } + + return 0; +} + +static int vfw_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + struct vfw_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; +} + +static int vfw_read_close(AVFormatContext *s) +{ + struct vfw_ctx *ctx = s->priv_data; + + if(ctx->hwnd) { + SendMessage(ctx->hwnd, WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, 0); + SendMessage(ctx->hwnd, WM_CAP_DRIVER_DISCONNECT, 0, 0); + DestroyWindow(ctx->hwnd); + } + if(ctx->mutex) + CloseHandle(ctx->mutex); + if(ctx->event) + CloseHandle(ctx->event); + + return 0; +} + +AVInputFormat vfwcap_demuxer = { + "vfwcap", + "VFW video capture", + sizeof(struct vfw_ctx), + NULL, + vfw_read_header, + vfw_read_packet, + vfw_read_close, + .flags = AVFMT_NOFILE, +}; |