avcodec: GEM Raster image decoder

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Peter Ross <pross@xvid.org>

Changelog

@@ -23,6 +23,7 @@ version <next>:
 - morpho video filter
 - amr parser
 - (a)latency filters
+- GEM Raster image decoder
 
 
 version 4.4:

doc/general_contents.texi

@@ -741,6 +741,8 @@ following image formats are supported:
     @tab OpenEXR
 @item FITS         @tab X @tab X
     @tab Flexible Image Transport System
+@item IMG          @tab   @tab X
+    @tab GEM Raster image
 @item JPEG         @tab X @tab X
     @tab Progressive JPEG is not supported.
 @item JPEG 2000    @tab X @tab X

libavcodec/Makefile

@@ -348,6 +348,7 @@ OBJS-$(CONFIG_G723_1_ENCODER)          += g723_1enc.o g723_1.o \
                                           acelp_vectors.o celp_filters.o celp_math.o
 OBJS-$(CONFIG_G729_DECODER)            += g729dec.o lsp.o celp_math.o celp_filters.o acelp_filters.o acelp_pitch_delay.o acelp_vectors.o g729postfilter.o
 OBJS-$(CONFIG_GDV_DECODER)             += gdv.o
+OBJS-$(CONFIG_GEM_DECODER)             += gemdec.o
 OBJS-$(CONFIG_GIF_DECODER)             += gifdec.o lzw.o
 OBJS-$(CONFIG_GIF_ENCODER)             += gif.o lzwenc.o
 OBJS-$(CONFIG_GREMLIN_DPCM_DECODER)    += dpcm.o

libavcodec/allcodecs.c

@@ -134,6 +134,7 @@ extern const AVCodec ff_fraps_decoder;
 extern const AVCodec ff_frwu_decoder;
 extern const AVCodec ff_g2m_decoder;
 extern const AVCodec ff_gdv_decoder;
+extern const AVCodec ff_gem_decoder;
 extern const AVCodec ff_gif_encoder;
 extern const AVCodec ff_gif_decoder;
 extern const AVCodec ff_h261_encoder;

libavcodec/codec_desc.c

@@ -1855,6 +1855,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .long_name = NULL_IF_CONFIG_SMALL("Digital Pictures SGA Video"),
         .props     = AV_CODEC_PROP_LOSSY,
     },
+    {
+        .id        = AV_CODEC_ID_GEM,
+        .type      = AVMEDIA_TYPE_VIDEO,
+        .name      = "gem",
+        .long_name = NULL_IF_CONFIG_SMALL("GEM Raster image"),
+        .props     = AV_CODEC_PROP_LOSSY,
+    },
 
     /* various PCM "codecs" */
     {

libavcodec/codec_id.h

@@ -307,6 +307,7 @@ enum AVCodecID {
     AV_CODEC_ID_CRI,
     AV_CODEC_ID_SIMBIOSIS_IMX,
     AV_CODEC_ID_SGA_VIDEO,
+    AV_CODEC_ID_GEM,
 
     /* various PCM "codecs" */
     AV_CODEC_ID_FIRST_AUDIO = 0x10000,     ///< A dummy id pointing at the start of audio codecs

libavcodec/version.h

@@ -28,7 +28,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR  59
-#define LIBAVCODEC_VERSION_MINOR  10
+#define LIBAVCODEC_VERSION_MINOR  11
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \