X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fh264_mp4toannexb_bsf.c;h=fb3f24ea4063bc6d552a83867dca79a40a912b2a;hb=c6db2e97dcd246234b958814450d3fd12a5c8c27;hp=292d10643307b395471d4d6dd0021b9b17dc8f38;hpb=b14761d1f8372dfe558193b8b754b9f1a858077d;p=ffmpeg

diff --git a/libavcodec/h264_mp4toannexb_bsf.c b/libavcodec/h264_mp4toannexb_bsf.c
index 292d1064330..fb3f24ea406 100644
--- a/libavcodec/h264_mp4toannexb_bsf.c
+++ b/libavcodec/h264_mp4toannexb_bsf.c
@@ -26,6 +26,7 @@
 
 #include "avcodec.h"
 #include "bsf.h"
+#include "h264.h"
 
 typedef struct H264BSFContext {
     int32_t  sps_offset;
@@ -209,9 +210,9 @@ static int h264_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out)
         if (nal_size > buf_end - buf || nal_size < 0)
             goto fail;
 
-        if (unit_type == 7)
+        if (unit_type == H264_NAL_SPS)
             s->idr_sps_seen = s->new_idr = 1;
-        else if (unit_type == 8) {
+        else if (unit_type == H264_NAL_PPS) {
             s->idr_pps_seen = s->new_idr = 1;
             /* if SPS has not been seen yet, prepend the AVCC one to PPS */
             if (!s->idr_sps_seen) {
@@ -232,18 +233,18 @@ static int h264_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out)
         /* if this is a new IDR picture following an IDR picture, reset the idr flag.
          * Just check first_mb_in_slice to be 0 as this is the simplest solution.
          * This could be checking idr_pic_id instead, but would complexify the parsing. */
-        if (!s->new_idr && unit_type == 5 && (buf[1] & 0x80))
+        if (!s->new_idr && unit_type == H264_NAL_IDR_SLICE && (buf[1] & 0x80))
             s->new_idr = 1;
 
         /* prepend only to the first type 5 NAL unit of an IDR picture, if no sps/pps are already present */
-        if (s->new_idr && unit_type == 5 && !s->idr_sps_seen && !s->idr_pps_seen) {
+        if (s->new_idr && unit_type == H264_NAL_IDR_SLICE && !s->idr_sps_seen && !s->idr_pps_seen) {
             if ((ret=alloc_and_copy(out,
                                ctx->par_out->extradata, ctx->par_out->extradata_size,
                                buf, nal_size, 1)) < 0)
                 goto fail;
             s->new_idr = 0;
         /* if only SPS has been seen, also insert PPS */
-        } else if (s->new_idr && unit_type == 5 && s->idr_sps_seen && !s->idr_pps_seen) {
+        } else if (s->new_idr && unit_type == H264_NAL_IDR_SLICE && s->idr_sps_seen && !s->idr_pps_seen) {
             if (s->pps_offset == -1) {
                 av_log(ctx, AV_LOG_WARNING, "PPS not present in the stream, nor in AVCC, stream may be unreadable\n");
                 if ((ret = alloc_and_copy(out, NULL, 0, buf, nal_size, 0)) < 0)
@@ -253,9 +254,9 @@ static int h264_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out)
                                         buf, nal_size, 1)) < 0)
                 goto fail;
         } else {
-            if ((ret=alloc_and_copy(out, NULL, 0, buf, nal_size, unit_type == 7 || unit_type == 8)) < 0)
+            if ((ret=alloc_and_copy(out, NULL, 0, buf, nal_size, unit_type == H264_NAL_SPS || unit_type == H264_NAL_PPS)) < 0)
                 goto fail;
-            if (!s->new_idr && unit_type == 1) {
+            if (!s->new_idr && unit_type == H264_NAL_SLICE) {
                 s->new_idr = 1;
                 s->idr_sps_seen = 0;
                 s->idr_pps_seen = 0;
@@ -279,6 +280,15 @@ fail:
     return ret;
 }
 
+static void h264_mp4toannexb_flush(AVBSFContext *ctx)
+{
+    H264BSFContext *s = ctx->priv_data;
+
+    s->idr_sps_seen = 0;
+    s->idr_pps_seen = 0;
+    s->new_idr      = s->extradata_parsed;
+}
+
 static const enum AVCodecID codec_ids[] = {
     AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
 };
@@ -288,5 +298,6 @@ const AVBitStreamFilter ff_h264_mp4toannexb_bsf = {
     .priv_data_size = sizeof(H264BSFContext),
     .init           = h264_mp4toannexb_init,
     .filter         = h264_mp4toannexb_filter,
+    .flush          = h264_mp4toannexb_flush,
     .codec_ids      = codec_ids,
 };