* VFW capture interface
* Copyright (c) 2006-2008 Ramiro Polla
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavformat/avformat.h"
+#include "libavformat/internal.h"
+#include "libavutil/log.h"
+#include "libavutil/opt.h"
+#include "libavutil/parseutils.h"
#include <windows.h>
#include <vfw.h>
-//#define DEBUG_VFW
-
/* Defines for VFW missing from MinGW.
* Remove this when MinGW incorporates them. */
#define HWND_MESSAGE ((HWND)-3)
/* End of missing MinGW defines */
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 PixelFormat vfw_pixfmt(DWORD biCompression, WORD biBitCount)
static void dump_videohdr(AVFormatContext *s, VIDEOHDR *vhdr)
{
-#ifdef DEBUG_VFW
+#ifdef DEBUG
av_log(s, AV_LOG_DEBUG, "VIDEOHDR\n");
dstruct(s, vhdr, lpData, "p");
dstruct(s, vhdr, dwBufferLength, "lu");
return 0;
}
-static int vfw_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int vfw_read_header(AVFormatContext *s)
{
struct vfw_ctx *ctx = s->priv_data;
AVCodecContext *codec;
CAPTUREPARMS cparms;
DWORD biCompression;
WORD biBitCount;
- int width;
- int height;
int ret;
+ AVRational framerate_q;
if (!strcmp(s->filename, "list")) {
for (devnum = 0; devnum <= 9; devnum++) {
return AVERROR(EIO);
}
- if(!ap->time_base.den) {
- av_log(s, AV_LOG_ERROR, "A time base must be specified.\n");
- 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");
SetWindowLongPtr(ctx->hwnd, GWLP_USERDATA, (LONG_PTR) s);
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
if(!st) {
vfw_read_close(s);
return AVERROR(ENOMEM);
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;
+
+ if (ctx->video_size) {
+ ret = av_parse_video_size(&bi->bmiHeader.biWidth, &bi->bmiHeader.biHeight, ctx->video_size);
+ if (ret < 0) {
+ av_log(s, AV_LOG_ERROR, "Couldn't parse video size.\n");
+ goto fail_bi;
+ }
+ }
if (0) {
/* For testing yet unsupported compressions
cparms.fYield = 1; // Spawn a background thread
cparms.dwRequestMicroSecPerFrame =
- (ap->time_base.num*1000000) / ap->time_base.den;
+ (framerate_q.den*1000000) / framerate_q.num;
cparms.fAbortLeftMouse = 0;
cparms.fAbortRightMouse = 0;
cparms.fCaptureAudio = 0;
goto fail_io;
codec = st->codec;
- codec->time_base = ap->time_base;
+ codec->time_base = (AVRational){framerate_q.den, framerate_q.num};
codec->codec_type = AVMEDIA_TYPE_VIDEO;
- codec->width = width;
- codec->height = height;
+ codec->width = bi->bmiHeader.biWidth;
+ codec->height = bi->bmiHeader.biHeight;
codec->pix_fmt = vfw_pixfmt(biCompression, biBitCount);
if(codec->pix_fmt == PIX_FMT_NONE) {
codec->codec_id = vfw_codecid(biCompression);
}
}
- av_set_pts_info(st, 32, 1, 1000);
+ avpriv_set_pts_info(st, 32, 1, 1000);
ctx->mutex = CreateMutex(NULL, 0, NULL);
if(!ctx->mutex) {
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,
+};
+
AVInputFormat ff_vfwcap_demuxer = {
- "vfwcap",
- NULL_IF_CONFIG_SMALL("VFW video capture"),
- sizeof(struct vfw_ctx),
- NULL,
- vfw_read_header,
- vfw_read_packet,
- vfw_read_close,
- .flags = AVFMT_NOFILE,
+ .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,
};
projects / ffmpeg / blobdiff