vp9: allocate 'b', 'block/uvblock' and 'eob/uveob' dynamically.
[ffmpeg.git] / libavcodec / indeo2.c
index 1b4d51b..3154e23 100644 (file)
  * Intel Indeo 2 decoder.
  */
 
-#define BITSTREAM_READER_LE
 #include "libavutil/attributes.h"
+
+#define BITSTREAM_READER_LE
 #include "avcodec.h"
 #include "get_bits.h"
 #include "indeo2data.h"
+#include "internal.h"
 #include "mathops.h"
 
 typedef struct Ir2Context{
     AVCodecContext *avctx;
-    AVFrame picture;
+    AVFrame *picture;
     GetBitContext gb;
     int decode_delta;
 } Ir2Context;
@@ -48,7 +50,7 @@ static inline int ir2_get_code(GetBitContext *gb)
 }
 
 static int ir2_decode_plane(Ir2Context *ctx, int width, int height, uint8_t *dst,
-                            int stride, const uint8_t *table)
+                            int pitch, const uint8_t *table)
 {
     int i;
     int j;
@@ -73,7 +75,7 @@ static int ir2_decode_plane(Ir2Context *ctx, int width, int height, uint8_t *dst
             dst[out++] = table[(c * 2) + 1];
         }
     }
-    dst += stride;
+    dst += pitch;
 
     for (j = 1; j < height; j++) {
         out = 0;
@@ -84,27 +86,27 @@ static int ir2_decode_plane(Ir2Context *ctx, int width, int height, uint8_t *dst
                 if (out + c*2 > width)
                     return AVERROR_INVALIDDATA;
                 for (i = 0; i < c * 2; i++) {
-                    dst[out] = dst[out - stride];
+                    dst[out] = dst[out - pitch];
                     out++;
                 }
             } else { /* add two deltas from table */
-                t        = dst[out - stride] + (table[c * 2] - 128);
+                t        = dst[out - pitch] + (table[c * 2] - 128);
                 t        = av_clip_uint8(t);
                 dst[out] = t;
                 out++;
-                t        = dst[out - stride] + (table[(c * 2) + 1] - 128);
+                t        = dst[out - pitch] + (table[(c * 2) + 1] - 128);
                 t        = av_clip_uint8(t);
                 dst[out] = t;
                 out++;
             }
         }
-        dst += stride;
+        dst += pitch;
     }
     return 0;
 }
 
 static int ir2_decode_plane_inter(Ir2Context *ctx, int width, int height, uint8_t *dst,
-                                  int stride, const uint8_t *table)
+                                  int pitch, const uint8_t *table)
 {
     int j;
     int out = 0;
@@ -132,7 +134,7 @@ static int ir2_decode_plane_inter(Ir2Context *ctx, int width, int height, uint8_
                 out++;
             }
         }
-        dst += stride;
+        dst += pitch;
     }
     return 0;
 }
@@ -145,15 +147,11 @@ static int ir2_decode_frame(AVCodecContext *avctx,
     const uint8_t *buf   = avpkt->data;
     int buf_size         = avpkt->size;
     AVFrame *picture     = data;
-    AVFrame * const p    = &s->picture;
+    AVFrame * const p    = s->picture;
     int start, ret;
+    int ltab, ctab;
 
-    if (p->data[0])
-        avctx->release_buffer(avctx, p);
-
-    p->reference = 1;
-    p->buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
-    if ((ret = avctx->reget_buffer(avctx, p)) < 0) {
+    if ((ret = ff_reget_buffer(avctx, p)) < 0) {
         av_log(s->avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
         return ret;
     }
@@ -175,38 +173,42 @@ static int ir2_decode_frame(AVCodecContext *avctx,
 
     init_get_bits(&s->gb, buf + start, (buf_size - start) * 8);
 
+    ltab = buf[0x22] & 3;
+    ctab = buf[0x22] >> 2;
     if (s->decode_delta) { /* intraframe */
         if ((ret = ir2_decode_plane(s, avctx->width, avctx->height,
-                                    s->picture.data[0], s->picture.linesize[0],
-                                    ir2_luma_table)) < 0)
+                                    p->data[0], p->linesize[0],
+                                    ir2_delta_table[ltab])) < 0)
             return ret;
 
         /* swapped U and V */
         if ((ret = ir2_decode_plane(s, avctx->width >> 2, avctx->height >> 2,
-                                    s->picture.data[2], s->picture.linesize[2],
-                                    ir2_luma_table)) < 0)
+                                    p->data[2], p->linesize[2],
+                                    ir2_delta_table[ctab])) < 0)
             return ret;
         if ((ret = ir2_decode_plane(s, avctx->width >> 2, avctx->height >> 2,
-                                    s->picture.data[1], s->picture.linesize[1],
-                                    ir2_luma_table)) < 0)
+                                    p->data[1], p->linesize[1],
+                                    ir2_delta_table[ctab])) < 0)
             return ret;
     } else { /* interframe */
         if ((ret = ir2_decode_plane_inter(s, avctx->width, avctx->height,
-                                          s->picture.data[0], s->picture.linesize[0],
-                                          ir2_luma_table)) < 0)
+                                          p->data[0], p->linesize[0],
+                                          ir2_delta_table[ltab])) < 0)
             return ret;
         /* swapped U and V */
         if ((ret = ir2_decode_plane_inter(s, avctx->width >> 2, avctx->height >> 2,
-                                          s->picture.data[2], s->picture.linesize[2],
-                                          ir2_luma_table)) < 0)
+                                          p->data[2], p->linesize[2],
+                                          ir2_delta_table[ctab])) < 0)
             return ret;
         if ((ret = ir2_decode_plane_inter(s, avctx->width >> 2, avctx->height >> 2,
-                                          s->picture.data[1], s->picture.linesize[1],
-                                          ir2_luma_table)) < 0)
+                                          p->data[1], p->linesize[1],
+                                          ir2_delta_table[ctab])) < 0)
             return ret;
     }
 
-    *picture   = s->picture;
+    if ((ret = av_frame_ref(picture, p)) < 0)
+        return ret;
+
     *got_frame = 1;
 
     return buf_size;
@@ -221,6 +223,10 @@ static av_cold int ir2_decode_init(AVCodecContext *avctx)
 
     avctx->pix_fmt= AV_PIX_FMT_YUV410P;
 
+    ic->picture = av_frame_alloc();
+    if (!ic->picture)
+        return AVERROR(ENOMEM);
+
     ir2_vlc.table = vlc_tables;
     ir2_vlc.table_allocated = 1 << CODE_VLC_BITS;
 #ifdef BITSTREAM_READER_LE
@@ -239,22 +245,20 @@ static av_cold int ir2_decode_init(AVCodecContext *avctx)
 static av_cold int ir2_decode_end(AVCodecContext *avctx)
 {
     Ir2Context * const ic = avctx->priv_data;
-    AVFrame *pic = &ic->picture;
 
-    if (pic->data[0])
-        avctx->release_buffer(avctx, pic);
+    av_frame_free(&ic->picture);
 
     return 0;
 }
 
 AVCodec ff_indeo2_decoder = {
     .name           = "indeo2",
+    .long_name      = NULL_IF_CONFIG_SMALL("Intel Indeo 2"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_INDEO2,
     .priv_data_size = sizeof(Ir2Context),
     .init           = ir2_decode_init,
     .close          = ir2_decode_end,
     .decode         = ir2_decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-    .long_name      = NULL_IF_CONFIG_SMALL("Intel Indeo 2"),
+    .capabilities   = AV_CODEC_CAP_DR1,
 };