OpenEXR decoder

Additional fixes and enhancements by Vittorio Giovara, Gonzalo Garramuno,
Nicolas George, Paul B Mahol and Michael Niedermayer.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Changelog

@@ -10,6 +10,7 @@ version <next>:
 - Amazing Studio PAF playback support
 - XBM decoder
 - bmp standalone parser
+- OpenEXR image decoder
 
 
 version 10:

configure

@@ -1727,6 +1727,7 @@ eac3_encoder_select="ac3_encoder"
 eamad_decoder_select="aandcttables dsputil mpegvideo"
 eatgq_decoder_select="aandcttables dsputil"
 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
+exr_decoder_deps="zlib"
 ffv1_decoder_select="golomb rangecoder"
 ffv1_encoder_select="rangecoder"
 ffvhuff_decoder_select="huffyuv_decoder"

doc/general.texi

@@ -436,6 +436,8 @@ following image formats are supported:
     @tab Argonaut BRender 3D engine image format.
 @item DPX          @tab X @tab X
     @tab Digital Picture Exchange
+@item EXR          @tab   @tab X
+    @tab OpenEXR
 @item JPEG         @tab X @tab X
     @tab Progressive JPEG is not supported.
 @item JPEG 2000    @tab E @tab X

libavcodec/Makefile

@@ -172,6 +172,7 @@ OBJS-$(CONFIG_EIGHTSVX_EXP_DECODER)    += 8svx.o
 OBJS-$(CONFIG_EIGHTSVX_FIB_DECODER)    += 8svx.o
 OBJS-$(CONFIG_ESCAPE124_DECODER)       += escape124.o
 OBJS-$(CONFIG_ESCAPE130_DECODER)       += escape130.o
+OBJS-$(CONFIG_EXR_DECODER)             += exr.o
 OBJS-$(CONFIG_FFV1_DECODER)            += ffv1dec.o ffv1.o
 OBJS-$(CONFIG_FFV1_ENCODER)            += ffv1enc.o ffv1.o
 OBJS-$(CONFIG_FIC_DECODER)             += fic.o

libavcodec/allcodecs.c

@@ -140,6 +140,7 @@ void avcodec_register_all(void)
     REGISTER_DECODER(EIGHTSVX_FIB,      eightsvx_fib);
     REGISTER_DECODER(ESCAPE124,         escape124);
     REGISTER_DECODER(ESCAPE130,         escape130);
+    REGISTER_DECODER(EXR,               exr);
     REGISTER_ENCDEC (FFV1,              ffv1);
     REGISTER_ENCDEC (FFVHUFF,           ffvhuff);
     REGISTER_DECODER(FIC,               fic);

libavcodec/avcodec.h

@@ -287,6 +287,7 @@ enum AVCodecID {
     AV_CODEC_ID_ALIAS_PIX,
     AV_CODEC_ID_BRENDER_PIX,
     AV_CODEC_ID_PAF_VIDEO,
+    AV_CODEC_ID_EXR,
 
     /* various PCM "codecs" */
     AV_CODEC_ID_FIRST_AUDIO = 0x10000,     ///< A dummy id pointing at the start of audio codecs

libavcodec/codec_desc.c

@@ -1129,6 +1129,14 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .long_name = NULL_IF_CONFIG_SMALL("DPX image"),
         .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
     },
+    {
+        .id        = AV_CODEC_ID_EXR,
+        .type      = AVMEDIA_TYPE_VIDEO,
+        .name      = "exr",
+        .long_name = NULL_IF_CONFIG_SMALL("OpenEXR image"),
+        .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY |
+                     AV_CODEC_PROP_LOSSLESS,
+    },
     {
         .id        = AV_CODEC_ID_GIF,
         .type      = AVMEDIA_TYPE_VIDEO,

libavcodec/version.h

@@ -29,8 +29,8 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 55
-#define LIBAVCODEC_VERSION_MINOR 41
-#define LIBAVCODEC_VERSION_MICRO  2
+#define LIBAVCODEC_VERSION_MINOR 42
+#define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \

libavformat/img2.c

@@ -70,6 +70,7 @@ static const IdStrMap img_tags[] = {
     { AV_CODEC_ID_JPEG2000,   "jpc"      },
     { AV_CODEC_ID_JPEG2000,   "j2k"      },
     { AV_CODEC_ID_DPX,        "dpx"      },
+    { AV_CODEC_ID_EXR,        "exr"      },
     { AV_CODEC_ID_PICTOR,     "pic"      },
     { AV_CODEC_ID_WEBP,       "webp"     },
     { AV_CODEC_ID_XBM,        "xbm"      },

libavformat/isom.c

@@ -229,6 +229,7 @@ const AVCodecTag ff_codec_movvideo_tags[] = {
     { AV_CODEC_ID_RAWVIDEO,  MKTAG('A', 'V', 'u', 'p') },
     { AV_CODEC_ID_SGI,       MKTAG('s', 'g', 'i', ' ') }, /* SGI  */
     { AV_CODEC_ID_DPX,       MKTAG('d', 'p', 'x', ' ') }, /* DPX */
+    { AV_CODEC_ID_EXR,       MKTAG('e', 'x', 'r', ' ') }, /* OpenEXR */
 
     { AV_CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'h') }, /* Apple ProRes 422 High Quality */
     { AV_CODEC_ID_PRORES, MKTAG('a', 'p', 'c', 'n') }, /* Apple ProRes 422 Standard Definition */