diff mbox

[FFmpeg-devel] avformat/matroskaenc: don't write a FlagInterlaced element if it would write the default value

Message ID 20161011213324.7260-1-jamrial@gmail.com
State Accepted
Commit 8063978bfc864e6e57621d9e103169f995e7d95b
Headers show

Commit Message

James Almer Oct. 11, 2016, 9:33 p.m. UTC
The spec says:
"Mandatory elements with a default value may be left out of the file. In the absence
of a mandatory element, the element's default value is used."

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavformat/matroskaenc.c | 2 --
 tests/fate/matroska.mak   | 2 +-
 2 files changed, 1 insertion(+), 3 deletions(-)

Comments

Hendrik Leppkes Oct. 11, 2016, 9:51 p.m. UTC | #1
On Tue, Oct 11, 2016 at 11:33 PM, James Almer <jamrial@gmail.com> wrote:
> The spec says:
> "Mandatory elements with a default value may be left out of the file. In the absence
> of a mandatory element, the element's default value is used."
>
> Signed-off-by: James Almer <jamrial@gmail.com>
> ---
>  libavformat/matroskaenc.c | 2 --
>  tests/fate/matroska.mak   | 2 +-
>  2 files changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
> index 5293a9b..a48f5bb 100644
> --- a/libavformat/matroskaenc.c
> +++ b/libavformat/matroskaenc.c
> @@ -876,8 +876,6 @@ static void mkv_write_field_order(AVIOContext *pb, int mode,
>  {
>      switch (field_order) {
>      case AV_FIELD_UNKNOWN:
> -        put_ebml_uint(pb, MATROSKA_ID_VIDEOFLAGINTERLACED,
> -                      MATROSKA_VIDEO_INTERLACE_FLAG_UNDETERMINED);
>          break;
>      case AV_FIELD_PROGRESSIVE:
>          put_ebml_uint(pb, MATROSKA_ID_VIDEOFLAGINTERLACED,
> diff --git a/tests/fate/matroska.mak b/tests/fate/matroska.mak
> index 7de9a59..63a4252 100644
> --- a/tests/fate/matroska.mak
> +++ b/tests/fate/matroska.mak
> @@ -4,6 +4,6 @@
>  FATE_MATROSKA-$(call DEMMUX, MATROSKA, MATROSKA) += fate-matroska-remux
>  fate-matroska-remux: CMD = md5 -i $(TARGET_SAMPLES)/vp9-test-vectors/vp90-2-2pass-akiyo.webm -color_trc 4 -c:v copy -fflags +bitexact -strict -2 -f matroska
>  fate-matroska-remux: CMP = oneline
> -fate-matroska-remux: REF = d1a5fc15908ba10ca3efa282059ca79f
> +fate-matroska-remux: REF = 84e950f59677e306f944fca484888c5d
>
>  FATE_SAMPLES_AVCONV += $(FATE_MATROSKA-yes)
> --
> 2.9.1
>

LGTM, writing unknown has no benefits either way.

- Hendrik
James Almer Oct. 11, 2016, 10:50 p.m. UTC | #2
On 10/11/2016 6:51 PM, Hendrik Leppkes wrote:
> On Tue, Oct 11, 2016 at 11:33 PM, James Almer <jamrial@gmail.com> wrote:
>> The spec says:
>> "Mandatory elements with a default value may be left out of the file. In the absence
>> of a mandatory element, the element's default value is used."
>>
>> Signed-off-by: James Almer <jamrial@gmail.com>
>> ---
>>  libavformat/matroskaenc.c | 2 --
>>  tests/fate/matroska.mak   | 2 +-
>>  2 files changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
>> index 5293a9b..a48f5bb 100644
>> --- a/libavformat/matroskaenc.c
>> +++ b/libavformat/matroskaenc.c
>> @@ -876,8 +876,6 @@ static void mkv_write_field_order(AVIOContext *pb, int mode,
>>  {
>>      switch (field_order) {
>>      case AV_FIELD_UNKNOWN:
>> -        put_ebml_uint(pb, MATROSKA_ID_VIDEOFLAGINTERLACED,
>> -                      MATROSKA_VIDEO_INTERLACE_FLAG_UNDETERMINED);
>>          break;
>>      case AV_FIELD_PROGRESSIVE:
>>          put_ebml_uint(pb, MATROSKA_ID_VIDEOFLAGINTERLACED,
>> diff --git a/tests/fate/matroska.mak b/tests/fate/matroska.mak
>> index 7de9a59..63a4252 100644
>> --- a/tests/fate/matroska.mak
>> +++ b/tests/fate/matroska.mak
>> @@ -4,6 +4,6 @@
>>  FATE_MATROSKA-$(call DEMMUX, MATROSKA, MATROSKA) += fate-matroska-remux
>>  fate-matroska-remux: CMD = md5 -i $(TARGET_SAMPLES)/vp9-test-vectors/vp90-2-2pass-akiyo.webm -color_trc 4 -c:v copy -fflags +bitexact -strict -2 -f matroska
>>  fate-matroska-remux: CMP = oneline
>> -fate-matroska-remux: REF = d1a5fc15908ba10ca3efa282059ca79f
>> +fate-matroska-remux: REF = 84e950f59677e306f944fca484888c5d
>>
>>  FATE_SAMPLES_AVCONV += $(FATE_MATROSKA-yes)
>> --
>> 2.9.1
>>
> 
> LGTM, writing unknown has no benefits either way.
> 
> - Hendrik

Pushed, thanks
diff mbox

Patch

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 5293a9b..a48f5bb 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -876,8 +876,6 @@  static void mkv_write_field_order(AVIOContext *pb, int mode,
 {
     switch (field_order) {
     case AV_FIELD_UNKNOWN:
-        put_ebml_uint(pb, MATROSKA_ID_VIDEOFLAGINTERLACED,
-                      MATROSKA_VIDEO_INTERLACE_FLAG_UNDETERMINED);
         break;
     case AV_FIELD_PROGRESSIVE:
         put_ebml_uint(pb, MATROSKA_ID_VIDEOFLAGINTERLACED,
diff --git a/tests/fate/matroska.mak b/tests/fate/matroska.mak
index 7de9a59..63a4252 100644
--- a/tests/fate/matroska.mak
+++ b/tests/fate/matroska.mak
@@ -4,6 +4,6 @@ 
 FATE_MATROSKA-$(call DEMMUX, MATROSKA, MATROSKA) += fate-matroska-remux
 fate-matroska-remux: CMD = md5 -i $(TARGET_SAMPLES)/vp9-test-vectors/vp90-2-2pass-akiyo.webm -color_trc 4 -c:v copy -fflags +bitexact -strict -2 -f matroska
 fate-matroska-remux: CMP = oneline
-fate-matroska-remux: REF = d1a5fc15908ba10ca3efa282059ca79f
+fate-matroska-remux: REF = 84e950f59677e306f944fca484888c5d
 
 FATE_SAMPLES_AVCONV += $(FATE_MATROSKA-yes)