ios/videotoolbox: fix error checking for size of extra_data

ijkmedia/ijkplayer/android/pipeline/ffpipenode_android_mediacodec_vdec.c

@@ -447,7 +447,8 @@ static int feed_input_buffer(JNIEnv *env, IJKFF_Pipenode *node, int64_t timeUs,
             int       size_data_size = 0;
             AVPacket *avpkt          = &d->pkt_temp;
             size_data = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &size_data_size);
-            if (size_data && size_data_size > AV_INPUT_BUFFER_PADDING_SIZE) {
+            // minimum avcC(sps,pps) = 7
+            if (size_data && size_data_size >= 7) {
                 int             got_picture = 0;
                 AVFrame        *frame      = av_frame_alloc();
                 AVDictionary   *codec_opts = NULL;

ios/IJKMediaPlayer/IJKMediaPlayer/ijkmedia/ijkplayer/ios/pipeline/IJKVideoToolBox.m

@@ -760,7 +760,8 @@ static int decode_video(VideoToolBoxContext* context, AVCodecContext *avctx, AVP
     if (context->ffp->vtb_handle_resolution_change &&
         context->codecpar->codec_id == AV_CODEC_ID_H264) {
         size_data = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &size_data_size);
-        if (size_data && size_data_size > AV_INPUT_BUFFER_PADDING_SIZE) {
+        // avcC(sps,pps) of size, minimum is 7
+        if (size_data && size_data_size > 7) {
             int             got_picture = 0;
             AVFrame        *frame      = av_frame_alloc();
             AVDictionary   *codec_opts = NULL;
@@ -770,7 +771,7 @@ static int decode_video(VideoToolBoxContext* context, AVCodecContext *avctx, AVP
 
             avcodec_parameters_to_context(new_avctx, context->codecpar);
             av_freep(&new_avctx->extradata);
-            new_avctx->extradata = av_mallocz(size_data_size);
+            new_avctx->extradata = av_mallocz(size_data_size + AV_INPUT_BUFFER_PADDING_SIZE);
             if (!new_avctx->extradata)
                 return AVERROR(ENOMEM);
             memcpy(new_avctx->extradata, size_data, size_data_size);