avcodec: Constify all the AVCodecParsers

[ffmpeg] / libavcodec / mpegpicture.c

diff --git a/libavcodec/mpegpicture.c b/libavcodec/mpegpicture.c
index c0e06900fe2a79e4c9335bf3cb3423cac68bd938..0652b7c87946bd571bc1941067da2f0a5a3b1c24 100644 (file)
--- a/libavcodec/mpegpicture.c
+++ b/libavcodec/mpegpicture.c
@@ -23,6 +23,7 @@
 #include "libavutil/avassert.h"
 #include "libavutil/common.h"
 #include "libavutil/pixdesc.h"
+#include "libavutil/imgutils.h"
 
 #include "avcodec.h"
 #include "motion_est.h"
@@ -57,6 +58,7 @@ do {\
 int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
                             ScratchpadContext *sc, int linesize)
 {
+#   define EMU_EDGE_HEIGHT (4 * 70)
     int alloc_size = FFALIGN(FFABS(linesize) + 64, 32);
 
     if (avctx->hwaccel)
@@ -67,26 +69,27 @@ int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
         return AVERROR_PATCHWELCOME;
     }
 
+    if (av_image_check_size2(alloc_size, EMU_EDGE_HEIGHT, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)
+        return AVERROR(ENOMEM);
+
     // edge emu needs blocksize + filter length - 1
     // (= 17x17 for  halfpel / 21x21 for H.264)
     // VC-1 computes luma and chroma simultaneously and needs 19X19 + 9x9
     // at uvlinesize. It supports only YUV420 so 24x24 is enough
     // linesize * interlaced * MBsize
     // we also use this buffer for encoding in encode_mb_internal() needig an additional 32 lines
-    FF_ALLOCZ_ARRAY_OR_GOTO(avctx, sc->edge_emu_buffer, alloc_size, 4 * 70,
-                      fail);
+    if (!FF_ALLOCZ_TYPED_ARRAY(sc->edge_emu_buffer, alloc_size * EMU_EDGE_HEIGHT) ||
+        !FF_ALLOCZ_TYPED_ARRAY(me->scratchpad,      alloc_size * 4 * 16 * 2)) {
+        av_freep(&sc->edge_emu_buffer);
+        return AVERROR(ENOMEM);
+    }
 
-    FF_ALLOCZ_ARRAY_OR_GOTO(avctx, me->scratchpad, alloc_size, 4 * 16 * 2,
-                      fail)
     me->temp            = me->scratchpad;
     sc->rd_scratchpad   = me->scratchpad;
     sc->b_scratchpad    = me->scratchpad;
     sc->obmc_scratchpad = me->scratchpad + 16;
 
     return 0;
-fail:
-    av_freep(&sc->edge_emu_buffer);
-    return AVERROR(ENOMEM);
 }
 
 /**
@@ -203,10 +206,7 @@ static int alloc_picture_tables(AVCodecContext *avctx, Picture *pic, int encodin
     }
 
     if (out_format == FMT_H263 || encoding ||
-#if FF_API_DEBUG_MV
-        avctx->debug_mv ||
-#endif
-        (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS)) {
+        (avctx->export_side_data & AV_CODEC_EXPORT_DATA_MVS)) {
         int mv_size        = 2 * (b8_array_size + 4) * sizeof(int16_t);
         int ref_index_size = 4 * mb_array_size;
 
@@ -220,6 +220,7 @@ static int alloc_picture_tables(AVCodecContext *avctx, Picture *pic, int encodin
 
     pic->alloc_mb_width  = mb_width;
     pic->alloc_mb_height = mb_height;
+    pic->alloc_mb_stride = mb_stride;
 
     return 0;
 }
@@ -315,30 +316,22 @@ void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *pic)
 
 int ff_update_picture_tables(Picture *dst, Picture *src)
 {
-     int i;
-
-#define UPDATE_TABLE(table)                                                   \
-do {                                                                          \
-    if (src->table &&                                                         \
-        (!dst->table || dst->table->buffer != src->table->buffer)) {          \
-        av_buffer_unref(&dst->table);                                         \
-        dst->table = av_buffer_ref(src->table);                               \
-        if (!dst->table) {                                                    \
-            ff_free_picture_tables(dst);                                      \
-            return AVERROR(ENOMEM);                                           \
-        }                                                                     \
-    }                                                                         \
-} while (0)
+    int i, ret;
 
-    UPDATE_TABLE(mb_var_buf);
-    UPDATE_TABLE(mc_mb_var_buf);
-    UPDATE_TABLE(mb_mean_buf);
-    UPDATE_TABLE(mbskip_table_buf);
-    UPDATE_TABLE(qscale_table_buf);
-    UPDATE_TABLE(mb_type_buf);
+    ret  = av_buffer_replace(&dst->mb_var_buf,       src->mb_var_buf);
+    ret |= av_buffer_replace(&dst->mc_mb_var_buf,    src->mc_mb_var_buf);
+    ret |= av_buffer_replace(&dst->mb_mean_buf,      src->mb_mean_buf);
+    ret |= av_buffer_replace(&dst->mbskip_table_buf, src->mbskip_table_buf);
+    ret |= av_buffer_replace(&dst->qscale_table_buf, src->qscale_table_buf);
+    ret |= av_buffer_replace(&dst->mb_type_buf,      src->mb_type_buf);
     for (i = 0; i < 2; i++) {
-        UPDATE_TABLE(motion_val_buf[i]);
-        UPDATE_TABLE(ref_index_buf[i]);
+        ret |= av_buffer_replace(&dst->motion_val_buf[i], src->motion_val_buf[i]);
+        ret |= av_buffer_replace(&dst->ref_index_buf[i],  src->ref_index_buf[i]);
+    }
+
+    if (ret < 0) {
+        ff_free_picture_tables(dst);
+        return ret;
     }
 
     dst->mb_var        = src->mb_var;
@@ -354,6 +347,7 @@ do {                                                                          \
 
     dst->alloc_mb_width  = src->alloc_mb_width;
     dst->alloc_mb_height = src->alloc_mb_height;
+    dst->alloc_mb_stride = src->alloc_mb_stride;
 
     return 0;
 }