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Do not store a copy of AVFormatContext *s in vfw_ctx. 

Save *s directly in SetWindowLongPtr instead.

Originally committed as revision 22574 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ramiro Polla 2010-03-17 04:24:43 +00:00
parent 3922deb577
commit ce03ed4df1
1 changed files with 9 additions and 10 deletions
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19
libavdevice/vfwcap.c
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@ -38,7 +38,6 @@ struct vfw_ctx {
HANDLE mutex;
HANDLE event;
AVPacketList *pktl;
AVFormatContext *s;
unsigned int curbufsize;
unsigned int frame_num;
};
@ -150,15 +149,15 @@ static void dump_bih(AVFormatContext *s, BITMAPINFOHEADER *bih)
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 = 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;
}
@ -168,14 +167,16 @@ static int shall_we_drop(struct vfw_ctx *ctx)
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);
@ -243,8 +244,6 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
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");
@ -271,7 +270,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
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) {