X-Git-Url: http://git.asbjorn.biz/?p=swftools.git;a=blobdiff_plain;f=avi2swf%2Fv2swf.c;h=c974bfbacdb286e546c9c46f56aedd872641201b;hp=70d639e8eb9ddb5aca5faefbfcf5238e65cadcbe;hb=f29d8006b1d8253c50808d6eb4941bdeb808c601;hpb=f4319d13f0368f3bb330d591f435173ce456fe45

diff --git a/avi2swf/v2swf.c b/avi2swf/v2swf.c
index 70d639e..c974bfb 100644
--- a/avi2swf/v2swf.c
+++ b/avi2swf/v2swf.c
@@ -34,8 +34,8 @@ typedef struct _v2swf_internal_t
     
     int myframes;
 
-    struct writer_t out;
-    struct writer_t out2;
+    writer_t out;
+    writer_t out2;
 
     ringbuffer_t r;
     videoreader_t* video;
@@ -70,6 +70,8 @@ typedef struct _v2swf_internal_t
     int keyframe;
     int showframe;
 
+    int skipframes;
+
     float samplepos;
     float framesamplepos;
     int samplewritepos;
@@ -77,6 +79,8 @@ typedef struct _v2swf_internal_t
     int soundstreamhead;
     int seek;
 
+    int numframes;
+
     double audio_fix;
     int fixheader;
     int prescale;
@@ -106,7 +110,7 @@ static void msg(char*format, ...)
     if(!verbose)
 	return;
     va_start(arglist, format);
-    vsprintf(buf, format, arglist);
+    vsnprintf(buf, sizeof(buf)-1, format, arglist);
     va_end(arglist);
     l = strlen(buf);
     while(l && buf[l-1]=='\n') {
@@ -333,14 +337,14 @@ static void writeShowTags(v2swf_internal_t* i, int shapeid, int bmid, int width,
     i->showframe = 1;
 }
 
-static int wwrite(struct writer_t*w, void*data, int len)
+static int wwrite(writer_t*w, void*data, int len)
 {
     v2swf_internal_t* i = (v2swf_internal_t*)w->internal;
     ringbuffer_put(&i->r, data, len);
     return len;
 }
 
-static void wfinish(struct writer_t*w)
+static void wfinish(writer_t*w)
 {
     v2swf_internal_t* i = (v2swf_internal_t*)w->internal;
 }
@@ -619,6 +623,21 @@ static int writeAudioOnly(v2swf_internal_t*i)
     return 1;
 }
 
+static int getframe(v2swf_internal_t*i)
+{
+    if(!i->skipframes)
+        return videoreader_getimage(i->video, i->vrbuffer);
+    else {
+        int t;
+        for(t=0;t<i->skipframes;t++) {
+            int ret = videoreader_getimage(i->video, i->vrbuffer);
+            if(!ret)
+                return 0;
+        }
+        return 1;
+    }
+}
+
 static int encodeoneframe(v2swf_internal_t*i)
 {
     videoreader_t*video = i->video;
@@ -636,11 +655,11 @@ static int encodeoneframe(v2swf_internal_t*i)
 	return writeAudioOnly(i);
     }
 
-    if(!videoreader_getimage(i->video, i->vrbuffer)) 
+    if(!getframe(i) || (i->numframes && i->frames==i->numframes)) 
     {
 	i->video_eof = 1;
 	msg("videoreader returned eof\n");
-	if(i->audio_eof) {
+	if(i->audio_eof || (i->numframes && i->frames==i->numframes)) {
 	    finish(i);
 	    return 0;
 	} else {
@@ -831,6 +850,15 @@ static int encodeoneframe(v2swf_internal_t*i)
     return 1;
 }
 
+static void init_fps(v2swf_internal_t*i)
+{
+    int oldframerate = i->framerate;
+    i->framerate = i->video->fps / i->skipframes;
+    i->video_fps = ((int)(i->framerate*256))/256.0;
+    if(oldframerate)
+        msg("setting new framerate to %f\n", i->framerate);
+}
+
 int v2swf_init(v2swf_t*v2swf, videoreader_t * video)
 {
     int ret = 0;
@@ -844,10 +872,13 @@ int v2swf_init(v2swf_t*v2swf, videoreader_t * video)
 
     ringbuffer_init(&i->r);
 
+    i->skipframes = 1;
+    i->framerate = 0;
+    i->video = video;
+    init_fps(i);
+
     msg("video: %dx%d, fps %f\n", video->width, video->height, video->fps);
 
-    i->video = video;
-    i->video_fps = ((int)(video->fps*256))/256.0;
     i->blockdiff = 64;
     i->keyframe_interval = 8;
     i->quality = 20;
@@ -855,11 +886,12 @@ int v2swf_init(v2swf_t*v2swf, videoreader_t * video)
     i->add_cut = 1;
     i->samplerate = 11025;
     i->prescale = 0;
+    i->numframes= 0;
+    i->skipframes = 0;
     i->head_done = 0;
     i->diffmode = DIFFMODE_QMEAN;
     i->audio_fix = 1.0;
     i->fixheader = 0;
-    i->framerate = i->video_fps;
     i->fpsratio = 1.00000000000;
     i->fpspos = 0.0;
     i->bitrate = 32;
@@ -873,8 +905,8 @@ int v2swf_init(v2swf_t*v2swf, videoreader_t * video)
     i->keyframe = 1;
     i->showframe = 0;
 
-    memset(&i->out, 0, sizeof(struct writer_t));
-    memset(&i->out2, 0, sizeof(struct writer_t));
+    memset(&i->out, 0, sizeof(writer_t));
+    memset(&i->out2, 0, sizeof(writer_t));
 
     return 0;
 }
@@ -942,6 +974,11 @@ void v2swf_setparameter(v2swf_t*v2swf, char*name, char*value)
 	i->scale = atoi(value);
     } else if(!strcmp(name, "quality")) {
 	i->quality = atoi(value);
+    } else if(!strcmp(name, "skipframes")) {
+	i->skipframes = atoi(value);
+        init_fps(i);
+    } else if(!strcmp(name, "numframes")) {
+	i->numframes = atoi(value);
     } else if(!strcmp(name, "motioncompensation")) {
 	i->domotion = atoi(value);
     } else if(!strcmp(name, "prescale")) {
@@ -1027,7 +1064,7 @@ void v2swf_backpatch(v2swf_t*v2swf, char*filename)
 		close(fi);
 		fi = open(filename, O_WRONLY|O_BINARY|O_TRUNC|O_CREAT, 0666);
 		if(fi>=0) {
-		    swf_WriteSWC(fi, &tmp);
+		    swf_WriteSWF(fi, &tmp);
 		    close(fi);
 		    msg("v2swf_backpatch %s - fix header: success\n", filename);
 		}