libschroedinger: Check memory allocations

libavcodec/libschroedinger.c

@@ -191,6 +191,8 @@ SchroFrame *ff_create_schro_frame(AVCodecContext *avctx,
     uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
 
     p_pic = av_mallocz(sizeof(AVPicture));
+    if (!p_pic)
+        return NULL;
     avpicture_alloc(p_pic, avctx->pix_fmt, y_width, y_height);
 
     p_frame         = schro_frame_new();

libavcodec/libschroedingerdec.c

@@ -271,6 +271,8 @@ static int libschroedinger_decode_frame(AVCodecContext *avctx,
                 /* Decoder needs a frame - create one and push it in. */
                 frame = ff_create_schro_frame(avctx,
                                               p_schro_params->frame_format);
+                if (!frame)
+                    return AVERROR(ENOMEM);
                 schro_decoder_add_output_picture(decoder, frame);
                 break;
 

libavcodec/libschroedingerenc.c

@@ -283,6 +283,8 @@ static int libschroedinger_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     } else {
         /* Allocate frame data to schro input buffer. */
         SchroFrame *in_frame = libschroedinger_frame_from_data(avctx, frame);
+        if (!in_frame)
+            return AVERROR(ENOMEM);
         /* Load next frame. */
         schro_encoder_push_frame(encoder, in_frame);
     }
@@ -331,6 +333,8 @@ static int libschroedinger_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
 
             /* Create output frame. */
             p_frame_output = av_mallocz(sizeof(FFSchroEncodedFrame));
+            if (!p_frame_output)
+                return AVERROR(ENOMEM);
             /* Set output data. */
             p_frame_output->size     = p_schro_params->enc_buf_size;
             p_frame_output->p_encbuf = p_schro_params->enc_buf;