lavf/img2dec: Autodetect dds frames.

libavformat/Makefile

@@ -202,6 +202,7 @@ OBJS-$(CONFIG_IMAGE2PIPE_MUXER)          += img2enc.o img2.o
 OBJS-$(CONFIG_IMAGE2_ALIAS_PIX_DEMUXER)  += img2_alias_pix.o
 OBJS-$(CONFIG_IMAGE2_BRENDER_PIX_DEMUXER) += img2_brender_pix.o
 OBJS-$(CONFIG_IMAGE_BMP_PIPE_DEMUXER)     += img2dec.o img2.o
+OBJS-$(CONFIG_IMAGE_DDS_PIPE_DEMUXER)     += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_DPX_PIPE_DEMUXER)     += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_EXR_PIPE_DEMUXER)     += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_J2K_PIPE_DEMUXER)     += img2dec.o img2.o

libavformat/allformats.c

@@ -335,6 +335,7 @@ void av_register_all(void)
 
     /* image demuxers */
     REGISTER_DEMUXER (IMAGE_BMP_PIPE,        image_bmp_pipe);
+    REGISTER_DEMUXER (IMAGE_DDS_PIPE,        image_dds_pipe);
     REGISTER_DEMUXER (IMAGE_DPX_PIPE,        image_dpx_pipe);
     REGISTER_DEMUXER (IMAGE_EXR_PIPE,        image_exr_pipe);
     REGISTER_DEMUXER (IMAGE_J2K_PIPE,        image_j2k_pipe);

libavformat/img2dec.c

@@ -609,6 +609,17 @@ static int bmp_probe(AVProbeData *p)
     return AVPROBE_SCORE_EXTENSION / 4;
 }
 
+static int dds_probe(AVProbeData *p)
+{
+    const uint8_t *b = p->buf;
+
+    if (   AV_RB64(b) == 0x444453207c000000
+        && AV_RL32(b +  8)
+        && AV_RL32(b + 12))
+        return AVPROBE_SCORE_MAX - 1;
+    return 0;
+}
+
 static int dpx_probe(AVProbeData *p)
 {
     const uint8_t *b = p->buf;
@@ -799,6 +810,7 @@ AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
 };
 
 IMAGEAUTO_DEMUXER(bmp,     AV_CODEC_ID_BMP)
+IMAGEAUTO_DEMUXER(dds,     AV_CODEC_ID_DDS)
 IMAGEAUTO_DEMUXER(dpx,     AV_CODEC_ID_DPX)
 IMAGEAUTO_DEMUXER(exr,     AV_CODEC_ID_EXR)
 IMAGEAUTO_DEMUXER(j2k,     AV_CODEC_ID_JPEG2000)

libavformat/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 56
-#define LIBAVFORMAT_VERSION_MINOR  39
+#define LIBAVFORMAT_VERSION_MINOR  40
 #define LIBAVFORMAT_VERSION_MICRO 100
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \