Move arch check before OS check.

[ffmpeg] / libavcodec / msvideo1.c

diff --git a/libavcodec/msvideo1.c b/libavcodec/msvideo1.c
index 518df0e52d0d89454f77949870b57873980263c3..854f36fb562ab34a5698ac7c6e34ab73cb78fbe1 100644 (file)
--- a/libavcodec/msvideo1.c
+++ b/libavcodec/msvideo1.c
@@ -2,20 +2,21 @@
  * Microsoft Video-1 Decoder
  * Copyright (C) 2003 the ffmpeg project
  *
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
@@ -34,9 +35,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#include "common.h"
 #include "avcodec.h"
-#include "dsputil.h"
 
 #define PALETTE_COUNT 256
 #define CHECK_STREAM_PTR(n) \
@@ -49,19 +48,18 @@
 typedef struct Msvideo1Context {
 
     AVCodecContext *avctx;
-    DSPContext dsp;
     AVFrame frame;
 
-    unsigned char *buf;
+    const unsigned char *buf;
     int size;
 
     int mode_8bit;  /* if it's not 8-bit, it's 16-bit */
 
 } Msvideo1Context;
 
-static int msvideo1_decode_init(AVCodecContext *avctx)
+static av_cold int msvideo1_decode_init(AVCodecContext *avctx)
 {
-    Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data;
+    Msvideo1Context *s = avctx->priv_data;
 
     s->avctx = avctx;
 
@@ -74,9 +72,6 @@ static int msvideo1_decode_init(AVCodecContext *avctx)
         avctx->pix_fmt = PIX_FMT_RGB555;
     }
 
-    avctx->has_b_frames = 0;
-    dsputil_init(&s->dsp, avctx);
-
     s->frame.data[0] = NULL;
 
     return 0;
@@ -156,8 +151,8 @@ static void msvideo1_decode_8bit(Msvideo1Context *s)
 
                 for (pixel_y = 0; pixel_y < 4; pixel_y++) {
                     for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
-                        pixels[pixel_ptr++] = 
-                            colors[((pixel_y & 0x2) << 1) + 
+                        pixels[pixel_ptr++] =
+                            colors[((pixel_y & 0x2) << 1) +
                                 (pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
                     pixel_ptr -= row_dec;
                 }
@@ -243,31 +238,31 @@ static void msvideo1_decode_16bit(Msvideo1Context *s)
                 flags = (byte_b << 8) | byte_a;
 
                 CHECK_STREAM_PTR(4);
-                colors[0] = LE_16(&s->buf[stream_ptr]);
+                colors[0] = AV_RL16(&s->buf[stream_ptr]);
                 stream_ptr += 2;
-                colors[1] = LE_16(&s->buf[stream_ptr]);
+                colors[1] = AV_RL16(&s->buf[stream_ptr]);
                 stream_ptr += 2;
 
                 if (colors[0] & 0x8000) {
                     /* 8-color encoding */
                     CHECK_STREAM_PTR(12);
-                    colors[2] = LE_16(&s->buf[stream_ptr]);
+                    colors[2] = AV_RL16(&s->buf[stream_ptr]);
                     stream_ptr += 2;
-                    colors[3] = LE_16(&s->buf[stream_ptr]);
+                    colors[3] = AV_RL16(&s->buf[stream_ptr]);
                     stream_ptr += 2;
-                    colors[4] = LE_16(&s->buf[stream_ptr]);
+                    colors[4] = AV_RL16(&s->buf[stream_ptr]);
                     stream_ptr += 2;
-                    colors[5] = LE_16(&s->buf[stream_ptr]);
+                    colors[5] = AV_RL16(&s->buf[stream_ptr]);
                     stream_ptr += 2;
-                    colors[6] = LE_16(&s->buf[stream_ptr]);
+                    colors[6] = AV_RL16(&s->buf[stream_ptr]);
                     stream_ptr += 2;
-                    colors[7] = LE_16(&s->buf[stream_ptr]);
+                    colors[7] = AV_RL16(&s->buf[stream_ptr]);
                     stream_ptr += 2;
 
                     for (pixel_y = 0; pixel_y < 4; pixel_y++) {
                         for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
-                            pixels[pixel_ptr++] = 
-                                colors[((pixel_y & 0x2) << 1) + 
+                            pixels[pixel_ptr++] =
+                                colors[((pixel_y & 0x2) << 1) +
                                     (pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
                         pixel_ptr -= row_dec;
                     }
@@ -298,9 +293,9 @@ static void msvideo1_decode_16bit(Msvideo1Context *s)
 
 static int msvideo1_decode_frame(AVCodecContext *avctx,
                                 void *data, int *data_size,
-                                uint8_t *buf, int buf_size)
+                                const uint8_t *buf, int buf_size)
 {
-    Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data;
+    Msvideo1Context *s = avctx->priv_data;
 
     s->buf = buf;
     s->size = buf_size;
@@ -324,9 +319,9 @@ static int msvideo1_decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-static int msvideo1_decode_end(AVCodecContext *avctx)
+static av_cold int msvideo1_decode_end(AVCodecContext *avctx)
 {
-    Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data;
+    Msvideo1Context *s = avctx->priv_data;
 
     if (s->frame.data[0])
         avctx->release_buffer(avctx, &s->frame);
@@ -344,4 +339,5 @@ AVCodec msvideo1_decoder = {
     msvideo1_decode_end,
     msvideo1_decode_frame,
     CODEC_CAP_DR1,
+    .long_name= "Microsoft Video 1",
 };