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Simplify returning errors by using goto 

Originally committed as revision 12818 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ramiro Polla 2008-04-14 14:59:51 +00:00
parent 861c63a216
commit 76c2662b48
1 changed files with 13 additions and 18 deletions
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31
libavdevice/vfwcap.c
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@ -285,8 +285,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
(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;
goto fail_io;
}
SetWindowLongPtr(ctx->hwnd, GWLP_USERDATA, (LONG_PTR) ctx);
@ -300,8 +299,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
/* Set video format */
bisize = SendMessage(ctx->hwnd, WM_CAP_GET_VIDEOFORMAT, 0, 0);
if(!bisize) {
vfw_read_close(s);
return AVERROR_IO;
goto fail_io;
}
bi = av_malloc(bisize);
if(!bi) {
@ -311,8 +309,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
ret = SendMessage(ctx->hwnd, WM_CAP_GET_VIDEOFORMAT, bisize, (LPARAM) bi);
if(!ret) {
av_free(bi);
vfw_read_close(s);
return AVERROR_IO;
goto fail_io;
}
dump_bih(s, &bi->bmiHeader);
@ -326,8 +323,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
if(!ret) {
av_log(s, AV_LOG_ERROR, "Could not set Video Format.\n");
av_free(bi);
vfw_read_close(s);
return AVERROR_IO;
goto fail_io;
}
biCompression = bi->bmiHeader.biCompression;
@ -339,8 +335,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
ret = SendMessage(ctx->hwnd, WM_CAP_GET_SEQUENCE_SETUP, sizeof(cparms),
(LPARAM) &cparms);
if(!ret) {
vfw_read_close(s);
return AVERROR_IO;
goto fail_io;
}
dump_captureparms(s, &cparms);
@ -356,8 +351,7 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
ret = SendMessage(ctx->hwnd, WM_CAP_SET_SEQUENCE_SETUP, sizeof(cparms),
(LPARAM) &cparms);
if(!ret) {
vfw_read_close(s);
return AVERROR_IO;
goto fail_io;
}
codec = st->codec;
@ -382,24 +376,25 @@ static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
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;
goto fail_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;
goto fail_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;
goto fail_io;
}
return 0;
fail_io:
vfw_read_close(s);
return AVERROR_IO;
}
static int vfw_read_packet(AVFormatContext *s, AVPacket *pkt)