write flt packet, might need some tweaking but it works

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@17893 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/gxfenc.c

@@ -60,6 +60,8 @@ typedef struct GXFContext {
     AVRational time_base;
     int flags;
     GXFStreamContext timecode_track;
+    unsigned *flt_entries;    ///< offsets of packets /1024, starts after 2nd video field
+    unsigned flt_entries_nb;
 } GXFContext;
 
 typedef struct GXF_Lines {
@@ -347,25 +349,30 @@ static int gxf_write_map_packet(AVFormatContext *s)
     return updatePacketSize(pb, pos);
 }
 
-#if 0
 static int gxf_write_flt_packet(AVFormatContext *s)
 {
     GXFContext *gxf = s->priv_data;
     ByteIOContext *pb = s->pb;
     int64_t pos = url_ftell(pb);
-    int i;
+    int fields_per_flt = (gxf->nb_fields+1) / 1000 + 1;
+    int flt_entries = gxf->nb_fields / fields_per_flt - 1;
+    int i = 0;
 
     gxf_write_packet_header(pb, PKT_FLT);
 
-    put_le32(pb, 1000); /* number of fields */
-    put_le32(pb, 0); /* number of active flt entries */
+    put_le32(pb, fields_per_flt); /* number of fields */
+    put_le32(pb, flt_entries); /* number of active flt entries */
 
-    for (i = 0; i < 1000; ++i) {
-        put_le32(pb, 0);
+    if (gxf->flt_entries) {
+        for (i = 0; i < flt_entries; i++)
+            put_le32(pb, gxf->flt_entries[(i*fields_per_flt)>>1]);
     }
+
+    for (; i < 1000; i++)
+        put_le32(pb, 0);
+
     return updatePacketSize(pb, pos);
 }
-#endif
 
 static int gxf_write_umf_material_description(AVFormatContext *s)
 {
@@ -721,7 +728,7 @@ static int gxf_write_header(AVFormatContext *s)
     gxf->flags |= 0x200000; // time code track is non-drop frame
 
     gxf_write_map_packet(s);
-    //gxf_write_flt_packet(s);
+    gxf_write_flt_packet(s);
     gxf_write_umf_packet(s);
     put_flush_packet(pb);
     return 0;
@@ -737,6 +744,7 @@ static int gxf_write_eos_packet(ByteIOContext *pb)
 
 static int gxf_write_trailer(AVFormatContext *s)
 {
+    GXFContext *gxf = s->priv_data;
     ByteIOContext *pb = s->pb;
     int64_t end;
 
@@ -745,11 +753,14 @@ static int gxf_write_trailer(AVFormatContext *s)
     gxf_write_eos_packet(pb);
     end = url_ftell(pb);
     url_fseek(pb, 0, SEEK_SET);
-    /* overwrite map and umf packets with new values */
+    /* overwrite map, flt and umf packets with new values */
     gxf_write_map_packet(s);
-    //gxf_write_flt_packet(s);
+    gxf_write_flt_packet(s);
     gxf_write_umf_packet(s);
     url_fseek(pb, end, SEEK_SET);
+
+    av_freep(&gxf->flt_entries);
+
     return 0;
 }
 
@@ -829,8 +840,18 @@ static int gxf_write_packet(AVFormatContext *s, AVPacket *pkt)
     put_buffer(pb, pkt->data, pkt->size);
     gxf_write_padding(pb, padding);
 
-    if (st->codec->codec_type == CODEC_TYPE_VIDEO)
+    if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
+        if (!(gxf->flt_entries_nb % 500)) {
+            gxf->flt_entries = av_realloc(gxf->flt_entries,
+                                          (gxf->flt_entries_nb+500)*sizeof(*gxf->flt_entries));
+            if (!gxf->flt_entries) {
+                av_log(s, AV_LOG_ERROR, "could not reallocate flt entries\n");
+                return -1;
+            }
+        }
+        gxf->flt_entries[gxf->flt_entries_nb++] = url_ftell(pb) / 1024;
         gxf->nb_fields += 2; // count fields
+    }
 
     put_flush_packet(pb);
 

tests/libav.regression.ref

@@ -27,8 +27,8 @@ af78858062599fcbba049e4a02588a15 *./tests/data/b-libav.mov
 913b6199765b1dcba196706574621c2f *./tests/data/b-libav.dv
 3600000 ./tests/data/b-libav.dv
 ./tests/data/b-libav.dv CRC=0x7787e173
-8a29994b83b6a00cfc0e0714fcf25705 *./tests/data/b-libav.gxf
-806184 ./tests/data/b-libav.gxf
+71434c75f12f6f54f9cd8b86107a2c75 *./tests/data/b-libav.gxf
+810208 ./tests/data/b-libav.gxf
 ./tests/data/b-libav.gxf CRC=0x9c06676e
 66a6584f9e83e8ea3af822a3ba71fbbe *./tests/data/b-libav.nut
 329264 ./tests/data/b-libav.nut

tests/seek.regression.ref

@@ -2907,59 +2907,59 @@ ret:-22 st:-1 ts:0.460008 flags:0
 ret:-22 st:-1 ts:-0.645825 flags:1
 ----------------
 tests/data/b-libav.gxf
-ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:940 size:65536 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ret: 0 st:-1 ts:-1.000000 flags:0
-ret: 0 st: 0 dts:0.000000 pts:-184467440737095520.000000 pos:66508 size:55076 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ret: 0 st:-1 ts:1.894167 flags:1
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st: 0 ts:0.780000 flags:0
-ret: 0 st: 0 dts:0.800000 pts:-184467440737095520.000000 pos:661548 size:22568 flags:0
+ret: 0 st: 0 dts:0.800000 pts:-184467440737095520.000000 pos:665572 size:22568 flags:0
 ret: 0 st: 0 ts:-0.320000 flags:1
-ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:940 size:65536 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ret: 0 st: 1 ts:2.580000 flags:0
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st: 1 ts:1.480000 flags:1
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st: 2 ts:0.360000 flags:0
-ret: 0 st: 0 dts:0.360000 pts:-184467440737095520.000000 pos:304084 size:23176 flags:0
+ret: 0 st: 0 dts:0.360000 pts:-184467440737095520.000000 pos:308108 size:23176 flags:0
 ret: 0 st: 2 ts:-0.740000 flags:1
-ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:940 size:65536 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ret: 0 st:-1 ts:2.153336 flags:0
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st:-1 ts:1.047503 flags:1
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st: 0 ts:-0.060000 flags:0
-ret: 0 st: 0 dts:0.000000 pts:-184467440737095520.000000 pos:66508 size:55076 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ret: 0 st: 0 ts:2.840000 flags:1
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st: 1 ts:1.740000 flags:0
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st: 1 ts:0.620000 flags:1
-ret: 0 st: 0 dts:0.600000 pts:-184467440737095520.000000 pos:476360 size:23728 flags:0
+ret: 0 st: 0 dts:0.640000 pts:-184467440737095520.000000 pos:504144 size:22976 flags:0
 ret: 0 st: 2 ts:-0.480000 flags:0
-ret: 0 st: 0 dts:0.000000 pts:-184467440737095520.000000 pos:66508 size:55076 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ret: 0 st: 2 ts:2.420000 flags:1
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st:-1 ts:1.306672 flags:0
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st:-1 ts:0.200839 flags:1
-ret: 0 st: 0 dts:0.200000 pts:-184467440737095520.000000 pos:211244 size:20944 flags:0
+ret: 0 st: 0 dts:0.200000 pts:-184467440737095520.000000 pos:215268 size:20944 flags:0
 ret: 0 st: 0 ts:-0.900000 flags:0
-ret: 0 st: 0 dts:0.000000 pts:-184467440737095520.000000 pos:66508 size:55076 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ret: 0 st: 0 ts:1.980000 flags:1
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st: 1 ts:0.880000 flags:0
-ret: 0 st: 0 dts:0.880000 pts:-184467440737095520.000000 pos:706964 size:22456 flags:0
+ret: 0 st: 0 dts:0.880000 pts:-184467440737095520.000000 pos:710988 size:22456 flags:0
 ret: 0 st: 1 ts:-0.220000 flags:1
-ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:940 size:65536 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ret: 0 st: 2 ts:2.680000 flags:0
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st: 2 ts:1.560000 flags:1
-ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:751848 size:54320 flags:1
+ret: 0 st: 0 dts:0.960000 pts:-184467440737095520.000000 pos:755872 size:54320 flags:1
 ret: 0 st:-1 ts:0.460008 flags:0
-ret: 0 st: 0 dts:0.480000 pts:-184467440737095520.000000 pos:371708 size:53804 flags:1
+ret: 0 st: 0 dts:0.480000 pts:-184467440737095520.000000 pos:375732 size:53804 flags:1
 ret: 0 st:-1 ts:-0.645825 flags:1
-ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:940 size:65536 flags:1
+ret: 0 st: 1 dts:0.000000 pts:0.000000 pos:4964 size:65536 flags:1
 ----------------
 tests/data/b-libav.mkv
 ret: 0 st: 0 dts:0.000000 pts:0.000000 pos:505 size:28088 flags:1