avcodec: add XPM decoder and demuxer

Signed-off-by: Paras Chadha <paraschadha18@gmail.com>

Changelog

@@ -27,6 +27,7 @@ version <next>:
 - ScreenPressor decoder
 - incomplete ClearVideo decoder
 - Intel QSV video scaling and deinterlacing filters
+- XPM decoder
 
 version 3.2:
 - libopenmpt demuxer

doc/general.texi

@@ -609,6 +609,8 @@ following image formats are supported:
     @tab X BitMap image format
 @item XFace @tab X @tab X
     @tab X-Face image format
+@item XPM  @tab   @tab X
+    @tab X PixMap image format
 @item XWD  @tab X @tab X
     @tab X Window Dump image format
 @end multitable

libavcodec/Makefile

@@ -650,6 +650,7 @@ OBJS-$(CONFIG_XFACE_ENCODER)           += xfaceenc.o xface.o
 OBJS-$(CONFIG_XL_DECODER)              += xl.o
 OBJS-$(CONFIG_XMA1_DECODER)            += wmaprodec.o wma.o wma_common.o
 OBJS-$(CONFIG_XMA2_DECODER)            += wmaprodec.o wma.o wma_common.o
+OBJS-$(CONFIG_XPM_DECODER)             += xpmdec.o
 OBJS-$(CONFIG_XSUB_DECODER)            += xsubdec.o
 OBJS-$(CONFIG_XSUB_ENCODER)            += xsubenc.o
 OBJS-$(CONFIG_XWD_DECODER)             += xwddec.o

libavcodec/allcodecs.c

@@ -378,6 +378,7 @@ static void register_all(void)
     REGISTER_ENCDEC (XBM,               xbm);
     REGISTER_ENCDEC (XFACE,             xface);
     REGISTER_DECODER(XL,                xl);
+    REGISTER_DECODER(XPM,               xpm);
     REGISTER_ENCDEC (XWD,               xwd);
     REGISTER_ENCDEC (Y41P,              y41p);
     REGISTER_DECODER(YLC,               ylc);

libavcodec/avcodec.h

@@ -439,6 +439,7 @@ enum AVCodecID {
     AV_CODEC_ID_FMVC,
     AV_CODEC_ID_SCPR,
     AV_CODEC_ID_CLEARVIDEO,
+    AV_CODEC_ID_XPM,
 
     /* various PCM "codecs" */
     AV_CODEC_ID_FIRST_AUDIO = 0x10000,     ///< A dummy id pointing at the start of audio codecs

libavcodec/codec_desc.c

@@ -1590,6 +1590,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .long_name = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"),
         .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSLESS,
     },
+    {
+        .id        = AV_CODEC_ID_XPM,
+        .type      = AVMEDIA_TYPE_VIDEO,
+        .name      = "xpm",
+        .long_name = NULL_IF_CONFIG_SMALL("XPM (X PixMap) image"),
+        .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSLESS,
+    },
     {
         .id        = AV_CODEC_ID_XWD,
         .type      = AVMEDIA_TYPE_VIDEO,

libavcodec/version.h

@@ -28,8 +28,8 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR  57
-#define LIBAVCODEC_VERSION_MINOR  82
-#define LIBAVCODEC_VERSION_MICRO 102
+#define LIBAVCODEC_VERSION_MINOR  83
+#define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \

libavformat/Makefile

@@ -241,6 +241,7 @@ OBJS-$(CONFIG_IMAGE_SGI_PIPE_DEMUXER)     += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_SUNRAST_PIPE_DEMUXER) += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_TIFF_PIPE_DEMUXER)    += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_WEBP_PIPE_DEMUXER)    += img2dec.o img2.o
+OBJS-$(CONFIG_IMAGE_XPM_PIPE_DEMUXER)     += img2dec.o img2.o
 OBJS-$(CONFIG_INGENIENT_DEMUXER)         += ingenientdec.o rawdec.o
 OBJS-$(CONFIG_IPMOVIE_DEMUXER)           += ipmovie.o
 OBJS-$(CONFIG_IRCAM_DEMUXER)             += ircamdec.o ircam.o pcm.o

libavformat/allformats.c

@@ -372,6 +372,7 @@ static void register_all(void)
     REGISTER_DEMUXER (IMAGE_SUNRAST_PIPE,    image_sunrast_pipe);
     REGISTER_DEMUXER (IMAGE_TIFF_PIPE,       image_tiff_pipe);
     REGISTER_DEMUXER (IMAGE_WEBP_PIPE,       image_webp_pipe);
+    REGISTER_DEMUXER (IMAGE_XPM_PIPE,        image_xpm_pipe);
 
     /* external libraries */
     REGISTER_MUXER   (CHROMAPRINT,      chromaprint);

libavformat/img2.c

@@ -75,6 +75,7 @@ const IdStrMap ff_img_tags[] = {
     { AV_CODEC_ID_V210X,      "yuv10"    },
     { AV_CODEC_ID_WEBP,       "webp"     },
     { AV_CODEC_ID_XBM,        "xbm"      },
+    { AV_CODEC_ID_XPM,        "xpm"      },
     { AV_CODEC_ID_XFACE,      "xface"    },
     { AV_CODEC_ID_XWD,        "xwd"      },
     { AV_CODEC_ID_NONE,       NULL       }

libavformat/img2dec.c

@@ -943,6 +943,15 @@ static int pam_probe(AVProbeData *p)
     return pnm_magic_check(p, 7) ? pnm_probe(p) : 0;
 }
 
+static int xpm_probe(AVProbeData *p)
+{
+    const uint8_t *b = p->buf;
+
+    if (AV_RB64(b) == 0x2f2a2058504d202a && *(b+8) == '/')
+        return AVPROBE_SCORE_MAX - 1;
+    return 0;
+}
+
 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
 static const AVClass imgname ## _class = {\
     .class_name = AV_STRINGIFY(imgname) " demuxer",\
@@ -983,3 +992,4 @@ IMAGEAUTO_DEMUXER(sgi,     AV_CODEC_ID_SGI)
 IMAGEAUTO_DEMUXER(sunrast, AV_CODEC_ID_SUNRAST)
 IMAGEAUTO_DEMUXER(tiff,    AV_CODEC_ID_TIFF)
 IMAGEAUTO_DEMUXER(webp,    AV_CODEC_ID_WEBP)
+IMAGEAUTO_DEMUXER(xpm,     AV_CODEC_ID_XPM)