[FFmpeg-cvslog] r12384 - in trunk: configure libavdevice/Makefile libavdevice/alldevices.c libavdevice/vfwcap.c
ramiro
subversion
Sat Mar 8 23:10:29 CET 2008
Author: ramiro
Date: Sat Mar 8 23:10:28 2008
New Revision: 12384
Log:
VFW capture support
Added:
trunk/libavdevice/vfwcap.c
Modified:
trunk/configure
trunk/libavdevice/Makefile
trunk/libavdevice/alldevices.c
Modified: trunk/configure
==============================================================================
--- trunk/configure (original)
+++ trunk/configure Sat Mar 8 23:10:28 2008
@@ -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; } ||
Modified: trunk/libavdevice/Makefile
==============================================================================
--- trunk/libavdevice/Makefile (original)
+++ trunk/libavdevice/Makefile Sat Mar 8 23:10:28 2008
@@ -14,6 +14,7 @@ OBJS-$(CONFIG_OSS_DEMUXER)
OBJS-$(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
Modified: trunk/libavdevice/alldevices.c
==============================================================================
--- trunk/libavdevice/alldevices.c (original)
+++ trunk/libavdevice/alldevices.c Sat Mar 8 23:10:28 2008
@@ -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 */
Added: trunk/libavdevice/vfwcap.c
==============================================================================
--- (empty file)
+++ trunk/libavdevice/vfwcap.c Sat Mar 8 23:10:28 2008
@@ -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,
+};
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