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[ffmpeg] / libavcodec / qtrle.c

diff --git a/libavcodec/qtrle.c b/libavcodec/qtrle.c
index c5161c0774c93a6bd25cb0b04ab81b7789705905..84482bac7bea21313d515282b974a01d755dc320 100644 (file)
--- a/libavcodec/qtrle.c
+++ b/libavcodec/qtrle.c
@@ -2,20 +2,21 @@
  * Quicktime Animation (RLE) Video Decoder
  * Copyright (C) 2004 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
  */
 
 /**
@@ -27,7 +28,7 @@
  * The QT RLE decoder has seven modes of operation:
  * 1, 2, 4, 8, 16, 24, and 32 bits per pixel. For modes 1, 2, 4, and 8
  * the decoder outputs PAL8 colorspace data. 16-bit data yields RGB555
- * data. 24-bit data is RGB24 and 32-bit data is RGBA32.
+ * data. 24-bit data is RGB24 and 32-bit data is RGB32.
  */
 
 #include <stdio.h>
@@ -35,7 +36,6 @@
 #include <string.h>
 #include <unistd.h>
 
-#include "common.h"
 #include "avcodec.h"
 #include "dsputil.h"
 
@@ -45,7 +45,7 @@ typedef struct QtrleContext {
     DSPContext dsp;
     AVFrame frame;
 
-    unsigned char *buf;
+    const unsigned char *buf;
     int size;
 
 } QtrleContext;
@@ -94,15 +94,15 @@ static void qtrle_decode_4bpp(QtrleContext *s)
 
     /* fetch the header */
     CHECK_STREAM_PTR(2);
-    header = BE_16(&s->buf[stream_ptr]);
+    header = AV_RB16(&s->buf[stream_ptr]);
     stream_ptr += 2;
 
     /* if a header is present, fetch additional decoding parameters */
     if (header & 0x0008) {
         CHECK_STREAM_PTR(8);
-        start_line = BE_16(&s->buf[stream_ptr]);
+        start_line = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
-        lines_to_change = BE_16(&s->buf[stream_ptr]);
+        lines_to_change = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
     } else {
         start_line = 0;
@@ -185,15 +185,15 @@ static void qtrle_decode_8bpp(QtrleContext *s)
 
     /* fetch the header */
     CHECK_STREAM_PTR(2);
-    header = BE_16(&s->buf[stream_ptr]);
+    header = AV_RB16(&s->buf[stream_ptr]);
     stream_ptr += 2;
 
     /* if a header is present, fetch additional decoding parameters */
     if (header & 0x0008) {
         CHECK_STREAM_PTR(8);
-        start_line = BE_16(&s->buf[stream_ptr]);
+        start_line = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
-        lines_to_change = BE_16(&s->buf[stream_ptr]);
+        lines_to_change = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
     } else {
         start_line = 0;
@@ -267,15 +267,15 @@ static void qtrle_decode_16bpp(QtrleContext *s)
 
     /* fetch the header */
     CHECK_STREAM_PTR(2);
-    header = BE_16(&s->buf[stream_ptr]);
+    header = AV_RB16(&s->buf[stream_ptr]);
     stream_ptr += 2;
 
     /* if a header is present, fetch additional decoding parameters */
     if (header & 0x0008) {
         CHECK_STREAM_PTR(8);
-        start_line = BE_16(&s->buf[stream_ptr]);
+        start_line = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
-        lines_to_change = BE_16(&s->buf[stream_ptr]);
+        lines_to_change = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
     } else {
         start_line = 0;
@@ -297,7 +297,7 @@ static void qtrle_decode_16bpp(QtrleContext *s)
                 /* decode the run length code */
                 rle_code = -rle_code;
                 CHECK_STREAM_PTR(2);
-                rgb16 = BE_16(&s->buf[stream_ptr]);
+                rgb16 = AV_RB16(&s->buf[stream_ptr]);
                 stream_ptr += 2;
 
                 CHECK_PIXEL_PTR(rle_code * 2);
@@ -312,7 +312,7 @@ static void qtrle_decode_16bpp(QtrleContext *s)
 
                 /* copy pixels directly to output */
                 while (rle_code--) {
-                    rgb16 = BE_16(&s->buf[stream_ptr]);
+                    rgb16 = AV_RB16(&s->buf[stream_ptr]);
                     stream_ptr += 2;
                     *(unsigned short *)(&rgb[pixel_ptr]) = rgb16;
                     pixel_ptr += 2;
@@ -345,15 +345,15 @@ static void qtrle_decode_24bpp(QtrleContext *s)
 
     /* fetch the header */
     CHECK_STREAM_PTR(2);
-    header = BE_16(&s->buf[stream_ptr]);
+    header = AV_RB16(&s->buf[stream_ptr]);
     stream_ptr += 2;
 
     /* if a header is present, fetch additional decoding parameters */
     if (header & 0x0008) {
         CHECK_STREAM_PTR(8);
-        start_line = BE_16(&s->buf[stream_ptr]);
+        start_line = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
-        lines_to_change = BE_16(&s->buf[stream_ptr]);
+        lines_to_change = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
     } else {
         start_line = 0;
@@ -411,7 +411,7 @@ static void qtrle_decode_32bpp(QtrleContext *s)
     int rle_code;
     int row_ptr, pixel_ptr;
     int row_inc = s->frame.linesize[0];
-    unsigned char r, g, b;
+    unsigned char a, r, g, b;
     unsigned int argb;
     unsigned char *rgb = s->frame.data[0];
     int pixel_limit = s->frame.linesize[0] * s->avctx->height;
@@ -425,15 +425,15 @@ static void qtrle_decode_32bpp(QtrleContext *s)
 
     /* fetch the header */
     CHECK_STREAM_PTR(2);
-    header = BE_16(&s->buf[stream_ptr]);
+    header = AV_RB16(&s->buf[stream_ptr]);
     stream_ptr += 2;
 
     /* if a header is present, fetch additional decoding parameters */
     if (header & 0x0008) {
         CHECK_STREAM_PTR(8);
-        start_line = BE_16(&s->buf[stream_ptr]);
+        start_line = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
-        lines_to_change = BE_16(&s->buf[stream_ptr]);
+        lines_to_change = AV_RB16(&s->buf[stream_ptr]);
         stream_ptr += 4;
     } else {
         start_line = 0;
@@ -455,11 +455,11 @@ static void qtrle_decode_32bpp(QtrleContext *s)
                 /* decode the run length code */
                 rle_code = -rle_code;
                 CHECK_STREAM_PTR(4);
-                stream_ptr++;  /* skip the alpha (?) byte */
+                a = s->buf[stream_ptr++];
                 r = s->buf[stream_ptr++];
                 g = s->buf[stream_ptr++];
                 b = s->buf[stream_ptr++];
-                argb = (r << 16) | (g << 8) | (b << 0);
+                argb = (a << 24) | (r << 16) | (g << 8) | (b << 0);
 
                 CHECK_PIXEL_PTR(rle_code * 4);
 
@@ -473,11 +473,11 @@ static void qtrle_decode_32bpp(QtrleContext *s)
 
                 /* copy pixels directly to output */
                 while (rle_code--) {
-                    stream_ptr++;  /* skip the alpha (?) byte */
+                    a = s->buf[stream_ptr++];
                     r = s->buf[stream_ptr++];
                     g = s->buf[stream_ptr++];
                     b = s->buf[stream_ptr++];
-                    argb = (r << 16) | (g << 8) | (b << 0);
+                    argb = (a << 24) | (r << 16) | (g << 8) | (b << 0);
                     *(unsigned int *)(&rgb[pixel_ptr]) = argb;
                     pixel_ptr += 4;
                 }
@@ -489,7 +489,7 @@ static void qtrle_decode_32bpp(QtrleContext *s)
 
 static int qtrle_decode_init(AVCodecContext *avctx)
 {
-    QtrleContext *s = (QtrleContext *)avctx->priv_data;
+    QtrleContext *s = avctx->priv_data;
 
     s->avctx = avctx;
     switch (avctx->bits_per_sample) {
@@ -513,7 +513,7 @@ static int qtrle_decode_init(AVCodecContext *avctx)
         break;
 
     case 32:
-        avctx->pix_fmt = PIX_FMT_RGBA32;
+        avctx->pix_fmt = PIX_FMT_RGB32;
         break;
 
     default:
@@ -521,7 +521,6 @@ static int qtrle_decode_init(AVCodecContext *avctx)
             avctx->bits_per_sample);
         break;
     }
-    avctx->has_b_frames = 0;
     dsputil_init(&s->dsp, avctx);
 
     s->frame.data[0] = NULL;
@@ -531,9 +530,9 @@ static int qtrle_decode_init(AVCodecContext *avctx)
 
 static int qtrle_decode_frame(AVCodecContext *avctx,
                               void *data, int *data_size,
-                              uint8_t *buf, int buf_size)
+                              const uint8_t *buf, int buf_size)
 {
-    QtrleContext *s = (QtrleContext *)avctx->priv_data;
+    QtrleContext *s = avctx->priv_data;
 
     s->buf = buf;
     s->size = buf_size;
@@ -606,7 +605,7 @@ static int qtrle_decode_frame(AVCodecContext *avctx,
 
 static int qtrle_decode_end(AVCodecContext *avctx)
 {
-    QtrleContext *s = (QtrleContext *)avctx->priv_data;
+    QtrleContext *s = avctx->priv_data;
 
     if (s->frame.data[0])
         avctx->release_buffer(avctx, &s->frame);