/*
* VFW capture interface
- * Copyright (c) 2006-2008 Ramiro Polla.
+ * Copyright (c) 2006-2008 Ramiro Polla
*
* This file is part of FFmpeg.
*
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "avformat.h"
-#include <vfw.h>
+#include "libavformat/avformat.h"
#include <windows.h>
+#include <vfw.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 {
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('U', 'Y', 'V', 'Y'):
+ return PIX_FMT_UYVY422;
case MKTAG('Y', 'U', 'Y', '2'):
return PIX_FMT_YUYV422;
+ case MKTAG('I', '4', '2', '0'):
+ return PIX_FMT_YUV420P;
case BI_RGB:
switch(biBitCount) { /* 1-8 are untested */
case 1:
return PIX_FMT_RGB32;
}
}
- return -1;
+ return PIX_FMT_NONE;
+}
+
+static enum CodecID vfw_codecid(DWORD biCompression)
+{
+ switch(biCompression) {
+ case MKTAG('d', 'v', 's', 'd'):
+ return CODEC_ID_DVVIDEO;
+ case MKTAG('M', 'J', 'P', 'G'):
+ case MKTAG('m', 'j', 'p', 'g'):
+ return CODEC_ID_MJPEG;
+ }
+ return CODEC_ID_NONE;
}
#define dstruct(pctx, sname, var, type) \
dstruct(s, bih, biClrImportant, "lu");
}
-static int shall_we_drop(struct vfw_ctx *ctx)
+static int shall_we_drop(AVFormatContext *s)
{
- AVFormatContext *s = ctx->s;
+ struct vfw_ctx *ctx = s->priv_data;
const uint8_t dropscore[] = {62, 75, 87, 100};
- const int ndropscores = sizeof(dropscore)/sizeof(dropscore[0]);
+ const int ndropscores = FF_ARRAY_ELEMS(dropscore);
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,
+ av_log(s, AV_LOG_ERROR,
"real-time buffer %d%% full! frame dropped!\n", buffer_fullness);
return 1;
}
static LRESULT CALLBACK videostream_cb(HWND hwnd, LPVIDEOHDR vdhdr)
{
+ AVFormatContext *s;
struct vfw_ctx *ctx;
AVPacketList **ppktl, *pktl_next;
- ctx = (struct vfw_ctx *) GetWindowLongPtr(hwnd, GWLP_USERDATA);
+ s = (AVFormatContext *) GetWindowLongPtr(hwnd, GWLP_USERDATA);
+ ctx = s->priv_data;
- dump_videohdr(ctx->s, vdhdr);
+ dump_videohdr(s, vdhdr);
- if(shall_we_drop(ctx))
+ if(shall_we_drop(s))
return FALSE;
WaitForSingleObject(ctx->mutex, INFINITE);
return FALSE;
}
-static int vfw_read_close(AVFormatContext *s);
+static int vfw_read_close(AVFormatContext *s)
+{
+ struct vfw_ctx *ctx = s->priv_data;
+ AVPacketList *pktl;
+
+ 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);
+
+ pktl = ctx->pktl;
+ while (pktl) {
+ AVPacketList *next = pktl->next;
+ av_destruct_packet(&pktl->pkt);
+ av_free(pktl);
+ pktl = next;
+ }
+
+ return 0;
+}
static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
int height;
int ret;
+ if (!strcmp(s->filename, "list")) {
+ for (devnum = 0; devnum <= 9; devnum++) {
+ char driver_name[256];
+ char driver_ver[256];
+ ret = capGetDriverDescription(devnum,
+ driver_name, sizeof(driver_name),
+ driver_ver, sizeof(driver_ver));
+ if (ret) {
+ av_log(s, AV_LOG_INFO, "Driver %d\n", devnum);
+ av_log(s, AV_LOG_INFO, " %s\n", driver_name);
+ av_log(s, AV_LOG_INFO, " %s\n", driver_ver);
+ }
+ }
+ return AVERROR(EIO);
+ }
+
if(!ap->time_base.den) {
av_log(s, AV_LOG_ERROR, "A time base must be specified.\n");
- return AVERROR_IO;
+ return AVERROR(EIO);
}
- 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;
+ return AVERROR(EIO);
}
/* If atoi fails, devnum==0 and the default device is used */
goto fail_io;
}
- SetWindowLongPtr(ctx->hwnd, GWLP_USERDATA, (LONG_PTR) ctx);
+ SetWindowLongPtr(ctx->hwnd, GWLP_USERDATA, (LONG_PTR) s);
st = av_new_stream(s, 0);
if(!st) {
vfw_read_close(s);
- return AVERROR_NOMEM;
+ return AVERROR(ENOMEM);
}
/* Set video format */
bisize = SendMessage(ctx->hwnd, WM_CAP_GET_VIDEOFORMAT, 0, 0);
- if(!bisize) {
+ if(!bisize)
goto fail_io;
- }
bi = av_malloc(bisize);
if(!bi) {
vfw_read_close(s);
- return AVERROR_NOMEM;
+ return AVERROR(ENOMEM);
}
ret = SendMessage(ctx->hwnd, WM_CAP_GET_VIDEOFORMAT, bisize, (LPARAM) bi);
- if(!ret) {
+ if(!ret)
goto fail_bi;
- }
dump_bih(s, &bi->bmiHeader);
bi->bmiHeader.biWidth = width ;
bi->bmiHeader.biHeight = height;
+ if (0) {
+ /* For testing yet unsupported compressions
+ * Copy these values from user-supplied verbose information */
+ bi->bmiHeader.biWidth = 320;
+ bi->bmiHeader.biHeight = 240;
+ bi->bmiHeader.biPlanes = 1;
+ bi->bmiHeader.biBitCount = 12;
+ bi->bmiHeader.biCompression = MKTAG('I','4','2','0');
+ bi->bmiHeader.biSizeImage = 115200;
+ dump_bih(s, &bi->bmiHeader);
+ }
+
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");
/* Set sequence setup */
ret = SendMessage(ctx->hwnd, WM_CAP_GET_SEQUENCE_SETUP, sizeof(cparms),
(LPARAM) &cparms);
- if(!ret) {
+ if(!ret)
goto fail_io;
- }
dump_captureparms(s, &cparms);
ret = SendMessage(ctx->hwnd, WM_CAP_SET_SEQUENCE_SETUP, sizeof(cparms),
(LPARAM) &cparms);
- if(!ret) {
+ if(!ret)
goto fail_io;
- }
codec = st->codec;
codec->time_base = ap->time_base;
- codec->codec_type = CODEC_TYPE_VIDEO;
+ codec->codec_type = AVMEDIA_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;
+ if(codec->pix_fmt == PIX_FMT_NONE) {
+ codec->codec_id = vfw_codecid(biCompression);
+ if(codec->codec_id == CODEC_ID_NONE) {
+ av_log(s, AV_LOG_ERROR, "Unknown compression type. "
+ "Please report verbose (-v 9) debug information.\n");
+ vfw_read_close(s);
+ return AVERROR_PATCHWELCOME;
+ }
+ codec->bits_per_coded_sample = biBitCount;
+ } else {
+ codec->codec_id = CODEC_ID_RAWVIDEO;
+ if(biCompression == BI_RGB) {
+ codec->bits_per_coded_sample = biBitCount;
+ codec->extradata = av_malloc(9 + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (codec->extradata) {
+ codec->extradata_size = 9;
+ memcpy(codec->extradata, "BottomUp", 9);
+ }
+ }
+ }
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" );
fail_io:
vfw_read_close(s);
- return AVERROR_IO;
+ return AVERROR(EIO);
}
static int vfw_read_packet(AVFormatContext *s, AVPacket *pkt)
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",
+ NULL_IF_CONFIG_SMALL("VFW video capture"),
sizeof(struct vfw_ctx),
NULL,
vfw_read_header,
projects / ffmpeg / blobdiff