Add FM Screen Capture Codec decoder

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Changelog

@@ -13,6 +13,7 @@ version <next>:
   --x86asmexe=yasm to configure to restore the old behavior.
 - Cineform HD decoder
 - VP9 superframe split/merge bitstream filters
+- FM Screen Capture Codec decoder
 
 
 version 12:

doc/general.texi

@@ -667,6 +667,7 @@ following image formats are supported:
 @item Flash Screen Video v2  @tab     @tab  X
 @item Flash Video (FLV)      @tab  X  @tab  X
     @tab Sorenson H.263 used in Flash
+@item FM Screen Capture Codec  @tab     @tab  X
 @item Forward Uncompressed   @tab     @tab  X
 @item Fraps                  @tab     @tab  X
 @item Go2Meeting             @tab     @tab  X

libavcodec/Makefile

@@ -235,6 +235,7 @@ OBJS-$(CONFIG_FLASHSV_DECODER)         += flashsv.o
 OBJS-$(CONFIG_FLASHSV_ENCODER)         += flashsvenc.o
 OBJS-$(CONFIG_FLASHSV2_DECODER)        += flashsv.o
 OBJS-$(CONFIG_FLIC_DECODER)            += flicvideo.o
+OBJS-$(CONFIG_FMVC_DECODER)            += fmvc.o
 OBJS-$(CONFIG_FOURXM_DECODER)          += 4xm.o
 OBJS-$(CONFIG_FRAPS_DECODER)           += fraps.o
 OBJS-$(CONFIG_FRWU_DECODER)            += frwu.o

libavcodec/allcodecs.c

@@ -161,6 +161,7 @@ void avcodec_register_all(void)
     REGISTER_DECODER(FLASHSV2,          flashsv2);
     REGISTER_DECODER(FLIC,              flic);
     REGISTER_ENCDEC (FLV,               flv);
+    REGISTER_DECODER(FMVC,              fmvc);
     REGISTER_DECODER(FOURXM,            fourxm);
     REGISTER_DECODER(FRAPS,             fraps);
     REGISTER_DECODER(FRWU,              frwu);

libavcodec/avcodec.h

@@ -408,6 +408,7 @@ enum AVCodecID {
     AV_CODEC_ID_AV1,
     AV_CODEC_ID_PIXLET,
     AV_CODEC_ID_CFHD,
+    AV_CODEC_ID_FMVC,
 
     /* various PCM "codecs" */
     AV_CODEC_ID_FIRST_AUDIO = 0x10000,     ///< A dummy id pointing at the start of audio codecs

libavcodec/codec_desc.c

@@ -1210,6 +1210,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .long_name = NULL_IF_CONFIG_SMALL("Apple Pixlet"),
         .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
     },
+    {
+        .id        = AV_CODEC_ID_FMVC,
+        .type      = AVMEDIA_TYPE_VIDEO,
+        .name      = "fmvc",
+        .long_name = NULL_IF_CONFIG_SMALL("FM Screen Capture Codec"),
+        .props     = AV_CODEC_PROP_LOSSLESS,
+    },
 
     /* image codecs */
     {

libavcodec/version.h

@@ -28,7 +28,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 58
-#define LIBAVCODEC_VERSION_MINOR  1
+#define LIBAVCODEC_VERSION_MINOR  2
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

libavformat/riff.c

@@ -369,6 +369,7 @@ const AVCodecTag ff_codec_bmp_tags[] = {
     { AV_CODEC_ID_MAGICYUV,     MKTAG('M', 'A', 'G', 'Y') },
     { AV_CODEC_ID_AV1,          MKTAG('A', 'V', '0', '1') },
     { AV_CODEC_ID_CFHD,         MKTAG('C', 'F', 'H', 'D') },
+    { AV_CODEC_ID_FMVC,         MKTAG('F', 'M', 'V', 'C') },
     { AV_CODEC_ID_NONE,         0 }
 };