64 bit pts for writing - more const usage
[ffmpeg.git] / libavformat / img.c
index af69870..0051271 100644 (file)
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#include <unistd.h>
 #include "avformat.h"
 
-#ifdef __MINGW32__
-#  include <windows.h>
-#  define usleep(t)    Sleep((t) / 1000)
-#endif
-#ifdef __BEOS__
-#  ifndef usleep
-#    include <OS.h>
-#    define usleep(t)  snooze((bigtime_t)(t))
-#  endif
-#endif
-#if defined(CONFIG_OS2)
-#  include <stdlib.h>
-#  define usleep(t)    _sleep2((t) / 1000)
-#endif
+/* XXX: this is a hack */
+int loop_input = 0;
 
 typedef struct {
     int width;
     int height;
+    int img_first;
+    int img_last;
     int img_number;
+    int img_count;
     int img_size;
     AVImageFormat *img_fmt;
     int pix_fmt;
@@ -47,7 +37,55 @@ typedef struct {
     void *ptr;
 } VideoData;
 
-int emulate_frame_rate;
+
+/* return -1 if no image found */
+static int find_image_range(int *pfirst_index, int *plast_index, 
+                            const char *path)
+{
+    char buf[1024];
+    int range, last_index, range1, first_index;
+
+    /* find the first image */
+    for(first_index = 0; first_index < 5; first_index++) {
+        if (get_frame_filename(buf, sizeof(buf), path, first_index) < 0)
+            goto fail;
+        if (url_exist(buf))
+            break;
+    }
+    if (first_index == 5)
+        goto fail;
+    
+    /* find the last image */
+    last_index = first_index;
+    for(;;) {
+        range = 0;
+        for(;;) {
+            if (!range)
+                range1 = 1;
+            else
+                range1 = 2 * range;
+            if (get_frame_filename(buf, sizeof(buf), path, 
+                                   last_index + range1) < 0)
+                goto fail;
+            if (!url_exist(buf))
+                break;
+            range = range1;
+            /* just in case... */
+            if (range >= (1 << 30))
+                goto fail;
+        }
+        /* we are sure than image last_index + range exists */
+        if (!range)
+            break;
+        last_index += range;
+    }
+    *pfirst_index = first_index;
+    *plast_index = last_index;
+    return 0;
+ fail:
+    return -1;
+}
+
 
 static int image_probe(AVProbeData *p)
 {
@@ -71,7 +109,7 @@ static int read_header_alloc_cb(void *opaque, AVImageInfo *info)
 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
 {
     VideoData *s = s1->priv_data;
-    int i, ret;
+    int ret, first_index, last_index;
     char buf[1024];
     ByteIOContext pb1, *f = &pb1;
     AVStream *st;
@@ -87,23 +125,36 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
 
     strcpy(s->path, s1->filename);
     s->img_number = 0;
-
+    s->img_count = 0;
+    
     /* find format */
     if (s1->iformat->flags & AVFMT_NOFILE)
         s->is_pipe = 0;
     else
         s->is_pipe = 1;
         
+    if (!ap || !ap->frame_rate) {
+        st->codec.frame_rate      = 25;
+        st->codec.frame_rate_base = 1;
+    } else {
+        st->codec.frame_rate      = ap->frame_rate;
+        st->codec.frame_rate_base = ap->frame_rate_base;
+    }
+    
     if (!s->is_pipe) {
-        /* try to find the first image */
-        for(i=0;i<5;i++) {
-            if (get_frame_filename(buf, sizeof(buf), s->path, s->img_number) < 0)
-                goto fail;
-            if (url_fopen(f, buf, URL_RDONLY) >= 0)
-                break;
-            s->img_number++;
-        }
-        if (i == 5)
+        if (find_image_range(&first_index, &last_index, s->path) < 0)
+            goto fail;
+        s->img_first = first_index;
+        s->img_last = last_index;
+        s->img_number = first_index;
+        /* compute duration */
+        st->start_time = 0;
+        st->duration = ((int64_t)AV_TIME_BASE * 
+                        (last_index - first_index + 1) * 
+                        st->codec.frame_rate_base) / st->codec.frame_rate;
+        if (get_frame_filename(buf, sizeof(buf), s->path, s->img_number) < 0)
+            goto fail;
+        if (url_fopen(f, buf, URL_RDONLY) < 0)
             goto fail;
     } else {
         f = &s1->pb;
@@ -126,11 +177,6 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
     st->codec.pix_fmt = s->pix_fmt;
     s->img_size = avpicture_get_size(s->pix_fmt, s->width, s->height);
 
-    if (!ap || !ap->frame_rate)
-        st->codec.frame_rate = 25 * FRAME_RATE_BASE;
-    else
-        st->codec.frame_rate = ap->frame_rate;
-    
     return 0;
  fail1:
     if (!s->is_pipe)
@@ -157,25 +203,12 @@ static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
     char filename[1024];
     int ret;
     ByteIOContext f1, *f;
-    static int64_t first_frame; // BUG -> to context FIXME
-
-    if (emulate_frame_rate) {
-        if (!first_frame) {
-            first_frame = av_gettime();
-        } else {
-            int64_t pts;
-            int64_t nowus;
-
-            nowus = av_gettime() - first_frame;
-
-            pts = ((int64_t)s->img_number * FRAME_RATE_BASE * 1000000) / (s1->streams[0]->codec.frame_rate);
-
-            if (pts > nowus)
-                usleep(pts - nowus);
-        }
-    }
 
     if (!s->is_pipe) {
+        /* loop over input */
+        if (loop_input && s->img_number > s->img_last) {
+            s->img_number = s->img_first;
+        }
         if (get_frame_filename(filename, sizeof(filename),
                                s->path, s->img_number) < 0)
             return -EIO;
@@ -201,7 +234,10 @@ static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
         av_free_packet(pkt);
         return -EIO; /* signal EOF */
     } else {
-        pkt->pts = ((int64_t)s->img_number * s1->pts_den * FRAME_RATE_BASE) / (s1->streams[0]->codec.frame_rate * s1->pts_num);
+        /* XXX: computing this pts is not necessary as it is done in
+           the generic code too */
+        pkt->pts = av_rescale((int64_t)s->img_count * s1->streams[0]->codec.frame_rate_base, s1->pts_den, s1->streams[0]->codec.frame_rate) / s1->pts_num;
+        s->img_count++;
         s->img_number++;
         return 0;
     }
@@ -265,7 +301,7 @@ static int img_write_header(AVFormatContext *s)
 }
 
 static int img_write_packet(AVFormatContext *s, int stream_index,
-                            uint8_t *buf, int size, int force_pts)
+                            const uint8_t *buf, int size, int64_t pts)
 {
     VideoData *img = s->priv_data;
     AVStream *st = s->streams[stream_index];