lavc: use buf[0] instead of data[0] in checks whether a frame is allocated

data[0] may be NULL for valid frames with hwaccel pixel formats.

libavcodec/h264.c

@@ -256,7 +256,7 @@ static void unref_picture(H264Context *h, Picture *pic)
     int off = offsetof(Picture, tf) + sizeof(pic->tf);
     int i;
 
-    if (!pic->f.data[0])
+    if (!pic->f.buf[0])
         return;
 
     ff_thread_release_buffer(h->avctx, &pic->tf);
@@ -278,7 +278,7 @@ static void release_unused_pictures(H264Context *h, int remove_current)
 
     /* release non reference frames */
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-        if (h->DPB[i].f.data[0] && !h->DPB[i].reference &&
+        if (h->DPB[i].f.buf[0] && !h->DPB[i].reference &&
             (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
             unref_picture(h, &h->DPB[i]);
         }
@@ -454,7 +454,7 @@ fail:
 
 static inline int pic_is_unused(H264Context *h, Picture *pic)
 {
-    if (pic->f.data[0] == NULL)
+    if (!pic->f.buf[0])
         return 1;
     if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
         return 1;
@@ -1767,7 +1767,7 @@ static int decode_update_thread_context(AVCodecContext *dst,
 
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
         unref_picture(h, &h->DPB[i]);
-        if (h1->DPB[i].f.data[0] &&
+        if (h1->DPB[i].f.buf[0] &&
             (ret = ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
             return ret;
     }
@@ -3524,7 +3524,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0)
          * since that can modify s->current_picture_ptr. */
         if (h0->first_field) {
             assert(h0->cur_pic_ptr);
-            assert(h0->cur_pic_ptr->f.data[0]);
+            assert(h0->cur_pic_ptr->f.buf[0]);
             assert(h0->cur_pic_ptr->reference != DELAYED_PIC_REF);
 
             /* figure out if we have a complementary field pair */
@@ -3614,7 +3614,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0)
          * frame, or to allocate a new one. */
         if (h0->first_field) {
             assert(h0->cur_pic_ptr);
-            assert(h0->cur_pic_ptr->f.data[0]);
+            assert(h0->cur_pic_ptr->f.buf[0]);
             assert(h0->cur_pic_ptr->reference != DELAYED_PIC_REF);
 
             /* figure out if we have a complementary field pair */
@@ -4894,7 +4894,7 @@ out:
         }
     }
 
-    assert(pict->data[0] || !*got_frame);
+    assert(pict->buf[0] || !*got_frame);
 
     return get_consumed_bytes(buf_index, buf_size);
 }

libavcodec/h264_refs.c

@@ -140,7 +140,9 @@ int ff_h264_fill_default_ref_list(H264Context *h)
         }
 
         if (lens[0] == lens[1] && lens[1] > 1) {
-            for (i = 0; h->default_ref_list[0][i].f.data[0] == h->default_ref_list[1][i].f.data[0] && i < lens[0]; i++);
+            for (i = 0; i < lens[0] &&
+                        h->default_ref_list[0][i].f.buf[0]->buffer ==
+                        h->default_ref_list[1][i].f.buf[0]->buffer; i++);
             if (i == lens[0]) {
                 Picture tmp;
                 COPY_PICTURE(&tmp, &h->default_ref_list[1][0]);
@@ -303,9 +305,9 @@ int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
     }
     for (list = 0; list < h->list_count; list++) {
         for (index = 0; index < h->ref_count[list]; index++) {
-            if (!h->ref_list[list][index].f.data[0]) {
+            if (!h->ref_list[list][index].f.buf[0]) {
                 av_log(h->avctx, AV_LOG_ERROR, "Missing reference picture\n");
-                if (h->default_ref_list[list][0].f.data[0])
+                if (h->default_ref_list[list][0].f.buf[0])
                     COPY_PICTURE(&h->ref_list[list][index], &h->default_ref_list[list][0]);
                 else
                     return -1;

libavcodec/mpegvideo.c

@@ -236,7 +236,7 @@ static int alloc_frame_buffer(MpegEncContext *s, Picture *pic)
         r = avcodec_default_get_buffer2(s->avctx, &pic->f, 0);
     }
 
-    if (r < 0 || !pic->f.data[0]) {
+    if (r < 0 || !pic->f.buf[0]) {
         av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed (%d %p)\n",
                r, pic->f.data[0]);
         return -1;
@@ -372,7 +372,7 @@ int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared)
         assert(pic->f.data[0]);
         pic->shared = 1;
     } else {
-        assert(!pic->f.data[0]);
+        assert(!pic->f.buf[0]);
 
         if (alloc_frame_buffer(s, pic) < 0)
             return -1;
@@ -674,7 +674,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
 
     for (i = 0; i < MAX_PICTURE_COUNT; i++) {
         ff_mpeg_unref_picture(s, &s->picture[i]);
-        if (s1->picture[i].f.data[0] &&
+        if (s1->picture[i].f.buf[0] &&
             (ret = ff_mpeg_ref_picture(s, &s->picture[i], &s1->picture[i])) < 0)
             return ret;
     }
@@ -682,7 +682,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
 #define UPDATE_PICTURE(pic)\
 do {\
     ff_mpeg_unref_picture(s, &s->pic);\
-    if (s1->pic.f.data[0])\
+    if (s1->pic.f.buf[0])\
         ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
     else\
         ret = update_picture_tables(&s->pic, &s1->pic);\
@@ -1401,7 +1401,7 @@ void ff_release_unused_pictures(MpegEncContext*s, int remove_current)
 
 static inline int pic_is_unused(MpegEncContext *s, Picture *pic)
 {
-    if (pic->f.data[0] == NULL)
+    if (pic->f.buf[0] == NULL)
         return 1;
     if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
         return 1;
@@ -1414,7 +1414,7 @@ static int find_unused_picture(MpegEncContext *s, int shared)
 
     if (shared) {
         for (i = 0; i < MAX_PICTURE_COUNT; i++) {
-            if (s->picture[i].f.data[0] == NULL)
+            if (s->picture[i].f.buf[0] == NULL)
                 return i;
         }
     } else {
@@ -1476,7 +1476,7 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
     /* mark & release old frames */
     if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
         s->last_picture_ptr != s->next_picture_ptr &&
-        s->last_picture_ptr->f.data[0]) {
+        s->last_picture_ptr->f.buf[0]) {
         ff_mpeg_unref_picture(s, s->last_picture_ptr);
     }
 
@@ -1501,7 +1501,7 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         ff_release_unused_pictures(s, 1);
 
         if (s->current_picture_ptr &&
-            s->current_picture_ptr->f.data[0] == NULL) {
+            s->current_picture_ptr->f.buf[0] == NULL) {
             // we already have a unused image
             // (maybe it was set before reading the header)
             pic = s->current_picture_ptr;
@@ -1561,7 +1561,7 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
             s->pict_type, s->droppable);
 
     if ((s->last_picture_ptr == NULL ||
-         s->last_picture_ptr->f.data[0] == NULL) &&
+         s->last_picture_ptr->f.buf[0] == NULL) &&
         (s->pict_type != AV_PICTURE_TYPE_I ||
          s->picture_structure != PICT_FRAME)) {
         int h_chroma_shift, v_chroma_shift;
@@ -1599,7 +1599,7 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
         ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
     }
     if ((s->next_picture_ptr == NULL ||
-         s->next_picture_ptr->f.data[0] == NULL) &&
+         s->next_picture_ptr->f.buf[0] == NULL) &&
         s->pict_type == AV_PICTURE_TYPE_B) {
         /* Allocate a dummy frame */
         i = ff_find_unused_picture(s, 0);
@@ -1618,21 +1618,21 @@ int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
 
     if (s->last_picture_ptr) {
         ff_mpeg_unref_picture(s, &s->last_picture);
-        if (s->last_picture_ptr->f.data[0] &&
+        if (s->last_picture_ptr->f.buf[0] &&
             (ret = ff_mpeg_ref_picture(s, &s->last_picture,
                                        s->last_picture_ptr)) < 0)
             return ret;
     }
     if (s->next_picture_ptr) {
         ff_mpeg_unref_picture(s, &s->next_picture);
-        if (s->next_picture_ptr->f.data[0] &&
+        if (s->next_picture_ptr->f.buf[0] &&
             (ret = ff_mpeg_ref_picture(s, &s->next_picture,
                                        s->next_picture_ptr)) < 0)
             return ret;
     }
 
     if (s->pict_type != AV_PICTURE_TYPE_I &&
-        !(s->last_picture_ptr && s->last_picture_ptr->f.data[0])) {
+        !(s->last_picture_ptr && s->last_picture_ptr->f.buf[0])) {
         av_log(s, AV_LOG_ERROR,
                "Non-reference picture received and no reference available\n");
         return AVERROR_INVALIDDATA;

libavcodec/pthread_frame.c

@@ -757,7 +757,7 @@ FF_DISABLE_DEPRECATION_WARNINGS
                            avctx->get_buffer2 == avcodec_default_get_buffer2);
 FF_ENABLE_DEPRECATION_WARNINGS
 
-    if (!f->f->data[0])
+    if (!f->f->buf[0])
         return;
 
     if (avctx->debug & FF_DEBUG_BUFFERS)