Changeset 4057

Timestamp:

Apr 17, 2012 6:54:50 AM (12 years ago)

Author:

bennylp

Message:

Related to re #1478: add timestamp value to audio and video frames in the AVI player, and fix the avg/max bps calculation for the port info of audio stream

File:

• pjproject/trunk/pjmedia/src/pjmedia/avi_player.c (modified) (9 diffs)

pjproject/trunk/pjmedia/src/pjmedia/avi_player.c

@@ -49 +49 @@
 #define SIGNATURE           PJMEDIA_SIG_PORT_VID_AVI_PLAYER
 
+#define VIDEO_CLOCK_RATE        90000
+
 #if 0
 #   define TRACE_(x)    PJ_LOG(4,x)
@@ -124 +126 @@
     unsigned         options;
     pjmedia_format_id fmt_id;
+    unsigned         usec_per_frame;
     pj_uint16_t      bits_per_sample;
     pj_bool_t        eof;
@@ -131 +134 @@
     pj_oshandle_t    fd;
     pj_ssize_t       size_left;
+    pj_timestamp     next_ts;
 
     pj_status_t    (*cb)(pjmedia_port*, void*);
@@ -456 +460 @@
 
             fport[i]->bits_per_sample = (vfi ? vfi->bpp : 0);
+            fport[i]->usec_per_frame = avi_hdr.avih_hdr.usec_per_frame;
             pjmedia_format_init_video(&fport[i]->base.info.fmt,
                                       fport[i]->fmt_id,
@@ -462 +467 @@
                                       strl_hdr->rate,
                                       strl_hdr->scale);
-            
+#if 0
+            /* The calculation below is wrong. strf_hdr->biSizeImage shows
+             * uncompressed size. Looks like we need to go the ugly way to
+             * get the bitrage:
+             *    http://www.virtualdub.org/blog/pivot/entry.php?id=159
+             */
+            bps = strf_hdr->biSizeImage * 8 * strl_hdr->rate / strl_hdr->scale;
+            if (bps==0) {
+                /* strf_hdr->biSizeImage may be zero for uncompressed RGB */
+                bps = strf_hdr->biWidth * strf_hdr->biHeight *
+                        strf_hdr->biBitCount *
+                        strl_hdr->rate / strl_hdr->scale;
+            }
+            fport[i]->base.info.fmt.det.vid.avg_bps = bps;
+            fport[i]->base.info.fmt.det.vid.max_bps = bps;
+#endif
         } else {
             strf_audio_hdr_t *strf_hdr =
@@ -468 +488 @@
 
             fport[i]->bits_per_sample = strf_hdr->bits_per_sample;
+            fport[i]->usec_per_frame = avi_hdr.avih_hdr.usec_per_frame;
             pjmedia_format_init_audio(&fport[i]->base.info.fmt,
                                       fport[i]->fmt_id,
@@ -473 +494 @@
                                       strf_hdr->nchannels,
                                       strf_hdr->bits_per_sample,
-                                      20000,
-                                      strf_hdr->bytes_per_sec,
-                                      strf_hdr->bytes_per_sec);
+                                      20000 /* fport[i]->usec_per_frame */,
+                                      strf_hdr->bytes_per_sec * 8,
+                                      strf_hdr->bytes_per_sec * 8);
         }
 
@@ -696 +717 @@
         frame->type = (fport->base.info.fmt.type == PJMEDIA_TYPE_VIDEO ?
                        PJMEDIA_FRAME_TYPE_VIDEO : PJMEDIA_FRAME_TYPE_AUDIO);
-        frame->timestamp.u64 = 0;
+
         if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) {
             if (size_to_read > fport->size_left)
@@ -720 +741 @@
     } while(1);
 
+    frame->timestamp.u64 = fport->next_ts.u64;
+    if (frame->type == PJMEDIA_FRAME_TYPE_AUDIO) {
+        if (fport->usec_per_frame) {
+            fport->next_ts.u64 += (fport->usec_per_frame *
+                                   fport->base.info.fmt.det.aud.clock_rate /
+                                   1000000);
+        } else {
+            fport->next_ts.u64 += (frame->size *
+                                   fport->base.info.fmt.det.aud.clock_rate /
+                                   (fport->base.info.fmt.det.aud.avg_bps / 8));
+        }
+    } else {
+        if (fport->usec_per_frame) {
+            fport->next_ts.u64 += (fport->usec_per_frame * VIDEO_CLOCK_RATE /
+                                   1000000);
+        } else {
+            fport->next_ts.u64 += (frame->size * VIDEO_CLOCK_RATE /
+                                   (fport->base.info.fmt.det.vid.avg_bps / 8));
+        }
+    }
+
     return PJ_SUCCESS;