lavf/img2dec: Auto-detect Kodak Photo CD image files.

FFmpeg · Sep 5, 2020 · d263838 · d263838
1 parent 1d14118
commit d263838
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Showing 4 changed files with 15 additions and 1 deletion.
diff --git a/libavformat/Makefile b/libavformat/Makefile
@@ -261,6 +261,7 @@ OBJS-$(CONFIG_IMAGE_PBM_PIPE_DEMUXER)     += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_PCX_PIPE_DEMUXER)     += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_PGMYUV_PIPE_DEMUXER)  += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_PGM_PIPE_DEMUXER)     += img2dec.o img2.o
+OBJS-$(CONFIG_IMAGE_PHOTOCD_DEMUXER)      += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_PICTOR_PIPE_DEMUXER)  += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_PNG_PIPE_DEMUXER)     += img2dec.o img2.o
 OBJS-$(CONFIG_IMAGE_PPM_PIPE_DEMUXER)     += img2dec.o img2.o

diff --git a/libavformat/allformats.c b/libavformat/allformats.c
@@ -494,6 +494,7 @@ extern AVInputFormat  ff_image_pcx_pipe_demuxer;
 extern AVInputFormat  ff_image_pgmyuv_pipe_demuxer;
 extern AVInputFormat  ff_image_pgm_pipe_demuxer;
 extern AVInputFormat  ff_image_pgx_pipe_demuxer;
+extern AVInputFormat  ff_image_photocd_pipe_demuxer;
 extern AVInputFormat  ff_image_pictor_pipe_demuxer;
 extern AVInputFormat  ff_image_png_pipe_demuxer;
 extern AVInputFormat  ff_image_ppm_pipe_demuxer;

diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
@@ -1070,6 +1070,17 @@ static int gif_probe(const AVProbeData *p)
     return AVPROBE_SCORE_MAX - 1;
 }
 
+static int photocd_probe(const AVProbeData *p)
+{
+    if (!memcmp(p->buf, "PCD_OPA", 7))
+        return AVPROBE_SCORE_MAX - 1;
+
+    if (p->buf_size < 0x807 || memcmp(p->buf + 0x800, "PCD_IPI", 7))
+        return 0;
+
+    return AVPROBE_SCORE_MAX - 1;
+}
+
 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
 static const AVClass imgname ## _class = {\
     .class_name = AV_STRINGIFY(imgname) " demuxer",\
@@ -1103,6 +1114,7 @@ IMAGEAUTO_DEMUXER(pcx,     AV_CODEC_ID_PCX)
 IMAGEAUTO_DEMUXER(pgm,     AV_CODEC_ID_PGM)
 IMAGEAUTO_DEMUXER(pgmyuv,  AV_CODEC_ID_PGMYUV)
 IMAGEAUTO_DEMUXER(pgx,     AV_CODEC_ID_PGX)
+IMAGEAUTO_DEMUXER(photocd, AV_CODEC_ID_PHOTOCD)
 IMAGEAUTO_DEMUXER(pictor,  AV_CODEC_ID_PICTOR)
 IMAGEAUTO_DEMUXER(png,     AV_CODEC_ID_PNG)
 IMAGEAUTO_DEMUXER(ppm,     AV_CODEC_ID_PPM)

diff --git a/libavformat/version.h b/libavformat/version.h
@@ -32,7 +32,7 @@
 // Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
 // Also please add any ticket numbers that you believe might be affected here
 #define LIBAVFORMAT_VERSION_MAJOR  58
-#define LIBAVFORMAT_VERSION_MINOR  53
+#define LIBAVFORMAT_VERSION_MINOR  54
 #define LIBAVFORMAT_VERSION_MICRO 100
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \