adxdec: clear eof flag and channel states when seeking

[ffmpeg] / libavcodec / mjpegdec.c

diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index c4cfd1af183777036142ea1af1995623e4406e8f..058b08fa83cf8971f66d261a536d51e20f470005 100644 (file)
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -34,6 +34,7 @@
 #include <assert.h>
 
 #include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
 #include "avcodec.h"
 #include "dsputil.h"
 #include "mjpeg.h"
@@ -96,21 +97,22 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
 
     build_basic_mjpeg_vlc(s);
 
+#if FF_API_MJPEG_GLOBAL_OPTS
     if (avctx->flags & CODEC_FLAG_EXTERN_HUFF)
+        s->extern_huff = 1;
+#endif
+    if (s->extern_huff)
     {
         av_log(avctx, AV_LOG_INFO, "mjpeg: using external huffman table\n");
         init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size*8);
         if (ff_mjpeg_decode_dht(s)) {
-            av_log(avctx, AV_LOG_ERROR, "mjpeg: error using external huffman table, switching back to internal\n");
-            build_basic_mjpeg_vlc(s);
+            av_log(avctx, AV_LOG_ERROR, "mjpeg: error using external huffman table\n");
+            return AVERROR_INVALIDDATA;
         }
     }
-    if (avctx->extradata_size > 9 &&
-        AV_RL32(avctx->extradata + 4) == MKTAG('f','i','e','l')) {
-        if (avctx->extradata[9] == 6) { /* quicktime icefloe 019 */
-            s->interlace_polarity = 1; /* bottom field first */
-            av_log(avctx, AV_LOG_DEBUG, "mjpeg bottom field first\n");
-        }
+    if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */
+        s->interlace_polarity = 1; /* bottom field first */
+        av_log(avctx, AV_LOG_DEBUG, "mjpeg bottom field first\n");
     }
     if (avctx->codec->id == CODEC_ID_AMV)
         s->flipped = 1;
@@ -1104,9 +1106,9 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
         av_log(s->avctx, AV_LOG_DEBUG, "APPx %8X\n", id);
     }
 
-    /* buggy AVID, it puts EOI only at every 10th frame */
-    /* also this fourcc is used by non-avid files too, it holds some
-       informations, but it's always present in AVID creates files */
+    /* Buggy AVID, it puts EOI only at every 10th frame. */
+    /* Also, this fourcc is used by non-avid files too, it holds some
+       information, but it's always present in AVID-created files. */
     if (id == AV_RL32("AVI1"))
     {
         /* structure:
@@ -1525,7 +1527,9 @@ eoi_parser:
                         av_log(avctx, AV_LOG_WARNING, "Can not process SOS before SOF, skipping\n");
                         break;
                     }
-                    ff_mjpeg_decode_sos(s, NULL, NULL);
+                    if (ff_mjpeg_decode_sos(s, NULL, NULL) < 0 &&
+                        (avctx->err_recognition & AV_EF_EXPLODE))
+                      return AVERROR_INVALIDDATA;
                     /* buggy avid puts EOI every 10-20th frame */
                     /* if restart period is over process EOI */
                     if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
@@ -1595,6 +1599,20 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
+#define OFFSET(x) offsetof(MJpegDecodeContext, x)
+#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
+static const AVOption options[] = {
+    { "extern_huff",        "Use external huffman table.",  OFFSET(extern_huff), AV_OPT_TYPE_INT, { 0 }, 0, 1, VD },
+    { NULL },
+};
+
+static const AVClass mjpegdec_class = {
+    .class_name = "MJPEG decoder",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
 AVCodec ff_mjpeg_decoder = {
     .name           = "mjpeg",
     .type           = AVMEDIA_TYPE_VIDEO,
@@ -1606,6 +1624,7 @@ AVCodec ff_mjpeg_decoder = {
     .capabilities   = CODEC_CAP_DR1,
     .max_lowres = 3,
     .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
+    .priv_class     = &mjpegdec_class,
 };
 
 AVCodec ff_thp_decoder = {