Re: [FFmpeg-devel] [PATCH 3/4] avformat/mxfenc: write reel_name if metadata key is present

2017-11-28 Thread Tomas Härdin 

On 2017-11-28 05:35, Mark Reid wrote:

On Mon, Nov 27, 2017 at 2:40 AM, Tomas Härdin  wrote:


On Sun, 2017-11-26 at 21:42 -0800, Mark Reid wrote:

@@ -1396,13 +1410,17 @@ static int mxf_write_package(AVFormatContext
*s, MXFPackage *package)
  }

  // write multiple descriptor reference
-if (package->type == SourcePackage) {
+if (package->instance == 1) {

Would only ever SourcePackage have instance != 0? What if we have
multiple MaterialPackage?
Saying (package->type == SourcePackage && package->instance == 1) might
be appropriate


simple enough, I'll do that



  mxf_write_local_tag(pb, 16, 0x4701);
  if (s->nb_streams > 1) {
  mxf_write_uuid(pb, MultipleDescriptor, 0);
  mxf_write_multi_descriptor(s);
  } else
  mxf_write_uuid(pb, SubDescriptor, 0);
+} else if (package->instance == 2) {

Same here


+mxf_write_local_tag(pb, 16, 0x4701);
+mxf_write_uuid(pb, TapeDescriptor, 0);
+mxf_write_tape_descriptor(s);
  }

  // write timecode track
@@ -1416,7 +1434,7 @@ static int mxf_write_package(AVFormatContext
*s, MXFPackage *package)
  mxf_write_sequence(s, st, package);
  mxf_write_structural_component(s, st, package);

-if (package->type == SourcePackage) {
+if (package->instance == 1) {

And here


@@ -1474,6 +1494,26 @@ static int
mxf_write_header_metadata_sets(AVFormatContext *s)
  }
  }

+if (entry = av_dict_get(s->metadata, "reel_name", NULL, 0)) {

Parenthesis around this and maybe an equality check. Or move the
assignment outside the if.



Ok, I'll move it outside the if


+packages[2].name = entry->value;

+} else {
+/* check if any of the streams contain a reel_name */
+for (i = 0; i < s->nb_streams; i++) {
+st = s->streams[i];
+if (entry = av_dict_get(st->metadata, "reel_name", NULL,
0)) {
+packages[2].name = entry->value;
+break;

Is it possible to set more than one reel_name? Conflicting values
should probably result in an error (both s->metadata and st->metadata).



yes this is a bit messy,  mxfdec puts the reel_names on streams. Even if
the all the streams source the same reel package,  I'd like to try and fix
that in mxfdec and put them on format level. How about for mxfenc being
strict and only accepting reel_name metadata at the format level for now?


Yes, strictness is good. Can always be relaxed later, unlike the opposite

/Tomas
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Re: [FFmpeg-devel] [PATCH 3/4] avformat/mxfenc: write reel_name if metadata key is present

2017-11-27 Thread Mark Reid 
On Mon, Nov 27, 2017 at 2:40 AM, Tomas Härdin  wrote:

> On Sun, 2017-11-26 at 21:42 -0800, Mark Reid wrote:
> > @@ -1396,13 +1410,17 @@ static int mxf_write_package(AVFormatContext
> > *s, MXFPackage *package)
> >  }
> >
> >  // write multiple descriptor reference
> > -if (package->type == SourcePackage) {
> > +if (package->instance == 1) {
>
> Would only ever SourcePackage have instance != 0? What if we have
> multiple MaterialPackage?
> Saying (package->type == SourcePackage && package->instance == 1) might
> be appropriate
>

simple enough, I'll do that


>
> >  mxf_write_local_tag(pb, 16, 0x4701);
> >  if (s->nb_streams > 1) {
> >  mxf_write_uuid(pb, MultipleDescriptor, 0);
> >  mxf_write_multi_descriptor(s);
> >  } else
> >  mxf_write_uuid(pb, SubDescriptor, 0);
> > +} else if (package->instance == 2) {
>
> Same here
>
> > +mxf_write_local_tag(pb, 16, 0x4701);
> > +mxf_write_uuid(pb, TapeDescriptor, 0);
> > +mxf_write_tape_descriptor(s);
> >  }
> >
> >  // write timecode track
> > @@ -1416,7 +1434,7 @@ static int mxf_write_package(AVFormatContext
> > *s, MXFPackage *package)
> >  mxf_write_sequence(s, st, package);
> >  mxf_write_structural_component(s, st, package);
> >
> > -if (package->type == SourcePackage) {
> > +if (package->instance == 1) {
>
> And here
>
> > @@ -1474,6 +1494,26 @@ static int
> > mxf_write_header_metadata_sets(AVFormatContext *s)
> >  }
> >  }
> >
> > +if (entry = av_dict_get(s->metadata, "reel_name", NULL, 0)) {
>
> Parenthesis around this and maybe an equality check. Or move the
> assignment outside the if.
>
>
Ok, I'll move it outside the if

> +packages[2].name = entry->value;
> > +} else {
> > +/* check if any of the streams contain a reel_name */
> > +for (i = 0; i < s->nb_streams; i++) {
> > +st = s->streams[i];
> > +if (entry = av_dict_get(st->metadata, "reel_name", NULL,
> > 0)) {
> > +packages[2].name = entry->value;
> > +break;
>
> Is it possible to set more than one reel_name? Conflicting values
> should probably result in an error (both s->metadata and st->metadata).
>
>
yes this is a bit messy,  mxfdec puts the reel_names on streams. Even if
the all the streams source the same reel package,  I'd like to try and fix
that in mxfdec and put them on format level. How about for mxfenc being
strict and only accepting reel_name metadata at the format level for now?



> /Tomas
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> ffmpeg-devel@ffmpeg.org
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>
>
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Re: [FFmpeg-devel] [PATCH 3/4] avformat/mxfenc: write reel_name if metadata key is present

2017-11-27 Thread Tomas Härdin 
On Sun, 2017-11-26 at 21:42 -0800, Mark Reid wrote:
> @@ -1396,13 +1410,17 @@ static int mxf_write_package(AVFormatContext
> *s, MXFPackage *package)
>  }
>  
>  // write multiple descriptor reference
> -if (package->type == SourcePackage) {
> +if (package->instance == 1) {

Would only ever SourcePackage have instance != 0? What if we have
multiple MaterialPackage?
Saying (package->type == SourcePackage && package->instance == 1) might
be appropriate

>  mxf_write_local_tag(pb, 16, 0x4701);
>  if (s->nb_streams > 1) {
>  mxf_write_uuid(pb, MultipleDescriptor, 0);
>  mxf_write_multi_descriptor(s);
>  } else
>  mxf_write_uuid(pb, SubDescriptor, 0);
> +} else if (package->instance == 2) {

Same here

> +mxf_write_local_tag(pb, 16, 0x4701);
> +mxf_write_uuid(pb, TapeDescriptor, 0);
> +mxf_write_tape_descriptor(s);
>  }
>  
>  // write timecode track
> @@ -1416,7 +1434,7 @@ static int mxf_write_package(AVFormatContext
> *s, MXFPackage *package)
>  mxf_write_sequence(s, st, package);
>  mxf_write_structural_component(s, st, package);
>  
> -if (package->type == SourcePackage) {
> +if (package->instance == 1) {

And here

> @@ -1474,6 +1494,26 @@ static int
> mxf_write_header_metadata_sets(AVFormatContext *s)
>  }
>  }
>  
> +if (entry = av_dict_get(s->metadata, "reel_name", NULL, 0)) {

Parenthesis around this and maybe an equality check. Or move the
assignment outside the if.

> +packages[2].name = entry->value;
> +} else {
> +/* check if any of the streams contain a reel_name */
> +for (i = 0; i < s->nb_streams; i++) {
> +st = s->streams[i];
> +if (entry = av_dict_get(st->metadata, "reel_name", NULL,
> 0)) {
> +packages[2].name = entry->value;
> +break;

Is it possible to set more than one reel_name? Conflicting values
should probably result in an error (both s->metadata and st->metadata).

/Tomas

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[FFmpeg-devel] [PATCH 3/4] avformat/mxfenc: write reel_name if metadata key is present

2017-11-26 Thread Mark Reid 
---
 libavformat/mxf.h|  1 +
 libavformat/mxfenc.c | 52 ++--
 2 files changed, 47 insertions(+), 6 deletions(-)

diff --git a/libavformat/mxf.h b/libavformat/mxf.h
index 2d5b44943b..ffcc429a8b 100644
--- a/libavformat/mxf.h
+++ b/libavformat/mxf.h
@@ -47,6 +47,7 @@ enum MXFMetadataSetType {
 EssenceContainerData,
 EssenceGroup,
 TaggedValue,
+TapeDescriptor,
 };
 
 enum MXFFrameLayout {
diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
index d573586fe4..8280f0236e 100644
--- a/libavformat/mxfenc.c
+++ b/libavformat/mxfenc.c
@@ -106,6 +106,7 @@ typedef struct MXFPackage {
 enum MXFMetadataSetType type;
 int instance;
 int uuid_offset;
+struct MXFPackage *ref;
 } MXFPackage;
 
 enum ULIndex {
@@ -999,20 +1000,33 @@ static void 
mxf_write_structural_component(AVFormatContext *s, AVStream *st, MXF
 
 // write source package uid, end of the reference
 mxf_write_local_tag(pb, 32, 0x1101);
-if (package->type == SourcePackage) {
+if (!package->ref) {
 for (i = 0; i < 4; i++)
 avio_wb64(pb, 0);
 } else
-mxf_write_umid(s, 1);
+mxf_write_umid(s, package->ref->instance);
 
 // write source track id
 mxf_write_local_tag(pb, 4, 0x1102);
-if (package->type == SourcePackage)
+if (package->type == SourcePackage && !package->ref)
 avio_wb32(pb, 0);
 else
 avio_wb32(pb, st->index+2);
 }
 
+static void mxf_write_tape_descriptor(AVFormatContext *s)
+{
+AVIOContext *pb = s->pb;
+
+mxf_write_metadata_key(pb, 0x012e00);
+PRINT_KEY(s, "tape descriptor key", pb->buf_ptr - 16);
+klv_encode_ber_length(pb, 20);
+mxf_write_local_tag(pb, 16, 0x3C0A);
+mxf_write_uuid(pb, TapeDescriptor, 0);
+PRINT_KEY(s, "tape_desc uid", pb->buf_ptr - 16);
+}
+
+
 static void mxf_write_multi_descriptor(AVFormatContext *s)
 {
 MXFContext *mxf = s->priv_data;
@@ -1396,13 +1410,17 @@ static int mxf_write_package(AVFormatContext *s, 
MXFPackage *package)
 }
 
 // write multiple descriptor reference
-if (package->type == SourcePackage) {
+if (package->instance == 1) {
 mxf_write_local_tag(pb, 16, 0x4701);
 if (s->nb_streams > 1) {
 mxf_write_uuid(pb, MultipleDescriptor, 0);
 mxf_write_multi_descriptor(s);
 } else
 mxf_write_uuid(pb, SubDescriptor, 0);
+} else if (package->instance == 2) {
+mxf_write_local_tag(pb, 16, 0x4701);
+mxf_write_uuid(pb, TapeDescriptor, 0);
+mxf_write_tape_descriptor(s);
 }
 
 // write timecode track
@@ -1416,7 +1434,7 @@ static int mxf_write_package(AVFormatContext *s, 
MXFPackage *package)
 mxf_write_sequence(s, st, package);
 mxf_write_structural_component(s, st, package);
 
-if (package->type == SourcePackage) {
+if (package->instance == 1) {
 MXFStreamContext *sc = st->priv_data;
 mxf_essence_container_uls[sc->index].write_desc(s, st);
 }
@@ -1452,11 +1470,13 @@ static int 
mxf_write_header_metadata_sets(AVFormatContext *s)
 AVStream *st = NULL;
 int i;
 int track_count = 0;
-MXFPackage packages[2] = {};
+MXFPackage packages[3] = {};
 int package_count = 2;
 packages[0].type = MaterialPackage;
 packages[1].type = SourcePackage;
 packages[1].instance = 1;
+packages[0].ref = [1];
+
 
 if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
packages[0].name = entry->value;
@@ -1474,6 +1494,26 @@ static int 
mxf_write_header_metadata_sets(AVFormatContext *s)
 }
 }
 
+if (entry = av_dict_get(s->metadata, "reel_name", NULL, 0)) {
+packages[2].name = entry->value;
+} else {
+/* check if any of the streams contain a reel_name */
+for (i = 0; i < s->nb_streams; i++) {
+st = s->streams[i];
+if (entry = av_dict_get(st->metadata, "reel_name", NULL, 0)) {
+packages[2].name = entry->value;
+break;
+}
+}
+}
+
+if (packages[2].name) {
+packages[2].type = SourcePackage;
+packages[2].instance = 2;
+packages[1].ref = [2];
+package_count = 3;
+}
+
 mxf_write_preface(s);
 mxf_write_identification(s);
 mxf_write_content_storage(s, packages, package_count);
-- 
2.13.6 (Apple Git-96)

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