mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-04 23:18:26 -05:00
494 lines
15 KiB
C
Executable File
494 lines
15 KiB
C
Executable File
/*
|
|
* 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 "libavutil/internal.h"
|
|
#include "libavutil/log.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/parseutils.h"
|
|
|
|
#include "libavformat/internal.h"
|
|
|
|
// windows.h must no be included before winsock2.h, and libavformat internal
|
|
// headers may include winsock2.h
|
|
#include <windows.h>
|
|
// windows.h needs to be included before vfw.h
|
|
#include <vfw.h>
|
|
|
|
#include "avdevice.h"
|
|
|
|
/* Some obsolete versions of MinGW32 before 4.0.0 lack this. */
|
|
#ifndef HWND_MESSAGE
|
|
#define HWND_MESSAGE ((HWND) -3)
|
|
#endif
|
|
|
|
struct vfw_ctx {
|
|
const AVClass *class;
|
|
HWND hwnd;
|
|
HANDLE mutex;
|
|
HANDLE event;
|
|
AVPacketList *pktl;
|
|
unsigned int curbufsize;
|
|
unsigned int frame_num;
|
|
char *video_size; /**< A string describing video size, set by a private option. */
|
|
char *framerate; /**< Set by a private option. */
|
|
};
|
|
|
|
static enum AVPixelFormat vfw_pixfmt(DWORD biCompression, WORD biBitCount)
|
|
{
|
|
switch(biCompression) {
|
|
case MKTAG('U', 'Y', 'V', 'Y'):
|
|
return AV_PIX_FMT_UYVY422;
|
|
case MKTAG('Y', 'U', 'Y', '2'):
|
|
return AV_PIX_FMT_YUYV422;
|
|
case MKTAG('I', '4', '2', '0'):
|
|
return AV_PIX_FMT_YUV420P;
|
|
case BI_RGB:
|
|
switch(biBitCount) { /* 1-8 are untested */
|
|
case 1:
|
|
return AV_PIX_FMT_MONOWHITE;
|
|
case 4:
|
|
return AV_PIX_FMT_RGB4;
|
|
case 8:
|
|
return AV_PIX_FMT_RGB8;
|
|
case 16:
|
|
return AV_PIX_FMT_RGB555;
|
|
case 24:
|
|
return AV_PIX_FMT_BGR24;
|
|
case 32:
|
|
return AV_PIX_FMT_RGB32;
|
|
}
|
|
}
|
|
return AV_PIX_FMT_NONE;
|
|
}
|
|
|
|
static enum AVCodecID vfw_codecid(DWORD biCompression)
|
|
{
|
|
switch(biCompression) {
|
|
case MKTAG('d', 'v', 's', 'd'):
|
|
return AV_CODEC_ID_DVVIDEO;
|
|
case MKTAG('M', 'J', 'P', 'G'):
|
|
case MKTAG('m', 'j', 'p', 'g'):
|
|
return AV_CODEC_ID_MJPEG;
|
|
}
|
|
return AV_CODEC_ID_NONE;
|
|
}
|
|
|
|
#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
|
|
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(AVFormatContext *s)
|
|
{
|
|
struct vfw_ctx *ctx = s->priv_data;
|
|
static const uint8_t dropscore[4] = { 62, 75, 87, 100 };
|
|
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(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)
|
|
{
|
|
AVFormatContext *s;
|
|
struct vfw_ctx *ctx;
|
|
AVPacketList **ppktl, *pktl_next;
|
|
|
|
s = (AVFormatContext *) GetWindowLongPtr(hwnd, GWLP_USERDATA);
|
|
ctx = s->priv_data;
|
|
|
|
dump_videohdr(s, vdhdr);
|
|
|
|
if(shall_we_drop(s))
|
|
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)
|
|
{
|
|
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_packet_unref(&pktl->pkt);
|
|
av_free(pktl);
|
|
pktl = next;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vfw_read_header(AVFormatContext *s)
|
|
{
|
|
struct vfw_ctx *ctx = s->priv_data;
|
|
AVCodecParameters *par;
|
|
AVStream *st;
|
|
int devnum;
|
|
int bisize;
|
|
BITMAPINFO *bi = NULL;
|
|
CAPTUREPARMS cparms;
|
|
DWORD biCompression;
|
|
WORD biBitCount;
|
|
int ret;
|
|
AVRational framerate_q;
|
|
|
|
if (!strcmp(s->url, "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);
|
|
}
|
|
|
|
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(EIO);
|
|
}
|
|
|
|
/* If atoi fails, devnum==0 and the default device is used */
|
|
devnum = atoi(s->url);
|
|
|
|
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");
|
|
goto fail;
|
|
}
|
|
|
|
SetWindowLongPtr(ctx->hwnd, GWLP_USERDATA, (LONG_PTR) s);
|
|
|
|
st = avformat_new_stream(s, NULL);
|
|
if(!st) {
|
|
vfw_read_close(s);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
/* Set video format */
|
|
bisize = SendMessage(ctx->hwnd, WM_CAP_GET_VIDEOFORMAT, 0, 0);
|
|
if(!bisize)
|
|
goto fail;
|
|
bi = av_malloc(bisize);
|
|
if(!bi) {
|
|
vfw_read_close(s);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
ret = SendMessage(ctx->hwnd, WM_CAP_GET_VIDEOFORMAT, bisize, (LPARAM) bi);
|
|
if(!ret)
|
|
goto fail;
|
|
|
|
dump_bih(s, &bi->bmiHeader);
|
|
|
|
ret = av_parse_video_rate(&framerate_q, ctx->framerate);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", ctx->framerate);
|
|
goto fail;
|
|
}
|
|
|
|
if (ctx->video_size) {
|
|
int w, h;
|
|
ret = av_parse_video_size(&w, &h, ctx->video_size);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Couldn't parse video size.\n");
|
|
goto fail;
|
|
}
|
|
bi->bmiHeader.biWidth = w;
|
|
bi->bmiHeader.biHeight = h;
|
|
}
|
|
|
|
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");
|
|
goto fail;
|
|
}
|
|
|
|
biCompression = bi->bmiHeader.biCompression;
|
|
biBitCount = bi->bmiHeader.biBitCount;
|
|
|
|
/* Set sequence setup */
|
|
ret = SendMessage(ctx->hwnd, WM_CAP_GET_SEQUENCE_SETUP, sizeof(cparms),
|
|
(LPARAM) &cparms);
|
|
if(!ret)
|
|
goto fail;
|
|
|
|
dump_captureparms(s, &cparms);
|
|
|
|
cparms.fYield = 1; // Spawn a background thread
|
|
cparms.dwRequestMicroSecPerFrame =
|
|
(framerate_q.den*1000000) / framerate_q.num;
|
|
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)
|
|
goto fail;
|
|
|
|
st->avg_frame_rate = framerate_q;
|
|
|
|
par = st->codecpar;
|
|
par->codec_type = AVMEDIA_TYPE_VIDEO;
|
|
par->width = bi->bmiHeader.biWidth;
|
|
par->height = bi->bmiHeader.biHeight;
|
|
par->format = vfw_pixfmt(biCompression, biBitCount);
|
|
if (par->format == AV_PIX_FMT_NONE) {
|
|
par->codec_id = vfw_codecid(biCompression);
|
|
if (par->codec_id == AV_CODEC_ID_NONE) {
|
|
avpriv_report_missing_feature(s, "This compression type");
|
|
vfw_read_close(s);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
par->bits_per_coded_sample = biBitCount;
|
|
} else {
|
|
par->codec_id = AV_CODEC_ID_RAWVIDEO;
|
|
if(biCompression == BI_RGB) {
|
|
par->bits_per_coded_sample = biBitCount;
|
|
par->extradata = av_malloc(9 + AV_INPUT_BUFFER_PADDING_SIZE);
|
|
if (par->extradata) {
|
|
par->extradata_size = 9;
|
|
memcpy(par->extradata, "BottomUp", 9);
|
|
}
|
|
}
|
|
}
|
|
|
|
av_freep(&bi);
|
|
|
|
avpriv_set_pts_info(st, 32, 1, 1000);
|
|
|
|
ctx->mutex = CreateMutex(NULL, 0, NULL);
|
|
if(!ctx->mutex) {
|
|
av_log(s, AV_LOG_ERROR, "Could not create Mutex.\n" );
|
|
goto fail;
|
|
}
|
|
ctx->event = CreateEvent(NULL, 1, 0, NULL);
|
|
if(!ctx->event) {
|
|
av_log(s, AV_LOG_ERROR, "Could not create Event.\n" );
|
|
goto fail;
|
|
}
|
|
|
|
ret = SendMessage(ctx->hwnd, WM_CAP_SEQUENCE_NOFILE, 0, 0);
|
|
if(!ret) {
|
|
av_log(s, AV_LOG_ERROR, "Could not start capture sequence.\n" );
|
|
goto fail;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
av_freep(&bi);
|
|
vfw_read_close(s);
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(struct vfw_ctx, x)
|
|
#define DEC AV_OPT_FLAG_DECODING_PARAM
|
|
static const AVOption options[] = {
|
|
{ "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
|
{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass vfw_class = {
|
|
.class_name = "VFW indev",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
.category = AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT
|
|
};
|
|
|
|
AVInputFormat ff_vfwcap_demuxer = {
|
|
.name = "vfwcap",
|
|
.long_name = NULL_IF_CONFIG_SMALL("VfW video capture"),
|
|
.priv_data_size = sizeof(struct vfw_ctx),
|
|
.read_header = vfw_read_header,
|
|
.read_packet = vfw_read_packet,
|
|
.read_close = vfw_read_close,
|
|
.flags = AVFMT_NOFILE,
|
|
.priv_class = &vfw_class,
|
|
};
|