X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fcscd.c;h=9ae7e33c7a4f6124a1170c7065d06bcd3e18882f;hb=607ad990d31e6be52980970e5ce8cd25ab3de812;hp=ada6a712a3b8000592deb4e051943f0b9b4a1e06;hpb=dd1c8f3e6e5380f993c86750bb09fd42e130143f;p=ffmpeg

diff --git a/libavcodec/cscd.c b/libavcodec/cscd.c
index ada6a712a3b..9ae7e33c7a4 100644
--- a/libavcodec/cscd.c
+++ b/libavcodec/cscd.c
@@ -2,52 +2,53 @@
  * CamStudio decoder
  * Copyright (c) 2006 Reimar Doeffinger
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include <stdio.h>
 #include <stdlib.h>
 
 #include "avcodec.h"
+#include "internal.h"
+#include "libavutil/common.h"
 
-#ifdef CONFIG_ZLIB
+#if CONFIG_ZLIB
 #include <zlib.h>
 #endif
 #include "libavutil/lzo.h"
 
 typedef struct {
-    AVFrame pic;
     int linelen, height, bpp;
     unsigned int decomp_size;
     unsigned char* decomp_buf;
 } CamStudioContext;
 
-static void copy_frame_default(AVFrame *f, const uint8_t *src,
+static void copy_frame_default(AVFrame *f, const uint8_t *src, int src_stride,
                                int linelen, int height) {
     int i;
     uint8_t *dst = f->data[0];
     dst += (height - 1) * f->linesize[0];
     for (i = height; i; i--) {
         memcpy(dst, src, linelen);
-        src += linelen;
+        src += src_stride;
         dst -= f->linesize[0];
     }
 }
 
-static void add_frame_default(AVFrame *f, const uint8_t *src,
+static void add_frame_default(AVFrame *f, const uint8_t *src, int src_stride,
                               int linelen, int height) {
     int i, j;
     uint8_t *dst = f->data[0];
@@ -55,15 +56,16 @@ static void add_frame_default(AVFrame *f, const uint8_t *src,
     for (i = height; i; i--) {
         for (j = linelen; j; j--)
             *dst++ += *src++;
+        src += src_stride - linelen;
         dst -= f->linesize[0] + linelen;
     }
 }
 
-#ifndef WORDS_BIGENDIAN
-#define copy_frame_16 copy_frame_default
-#define copy_frame_32 copy_frame_default
-#define add_frame_16 add_frame_default
-#define add_frame_32 add_frame_default
+#if !HAVE_BIGENDIAN
+#define copy_frame_16(f, s, l, h) copy_frame_default(f, s, l, l, h)
+#define copy_frame_32(f, s, l, h) copy_frame_default(f, s, l, l, h)
+#define add_frame_16(f, s, l, h) add_frame_default(f, s, l, l, h)
+#define add_frame_32(f, s, l, h) add_frame_default(f, s, l, l, h)
 #else
 static void copy_frame_16(AVFrame *f, const uint8_t *src,
                           int linelen, int height) {
@@ -134,108 +136,107 @@ static void add_frame_32(AVFrame *f, const uint8_t *src,
 }
 #endif
 
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
-                        const uint8_t *buf, int buf_size) {
+static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+                        AVPacket *avpkt) {
+    const uint8_t *buf = avpkt->data;
+    int buf_size = avpkt->size;
     CamStudioContext *c = avctx->priv_data;
     AVFrame *picture = data;
+    int ret;
 
     if (buf_size < 2) {
         av_log(avctx, AV_LOG_ERROR, "coded frame too small\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
-    if (c->pic.data[0])
-        avctx->release_buffer(avctx, &c->pic);
-    c->pic.reference = 1;
-    c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_READABLE |
-                          FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
-    if (avctx->get_buffer(avctx, &c->pic) < 0) {
+    if ((ret = ff_get_buffer(avctx, picture, 0)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
+        return ret;
     }
 
     // decompress data
     switch ((buf[0] >> 1) & 7) {
         case 0: { // lzo compression
             int outlen = c->decomp_size, inlen = buf_size - 2;
-            if (lzo1x_decode(c->decomp_buf, &outlen, &buf[2], &inlen))
+            if (av_lzo1x_decode(c->decomp_buf, &outlen, &buf[2], &inlen))
                 av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
             break;
         }
         case 1: { // zlib compression
-#ifdef CONFIG_ZLIB
+#if CONFIG_ZLIB
             unsigned long dlen = c->decomp_size;
             if (uncompress(c->decomp_buf, &dlen, &buf[2], buf_size - 2) != Z_OK)
                 av_log(avctx, AV_LOG_ERROR, "error during zlib decompression\n");
             break;
 #else
             av_log(avctx, AV_LOG_ERROR, "compiled without zlib support\n");
-            return -1;
+            return AVERROR(ENOSYS);
 #endif
         }
         default:
             av_log(avctx, AV_LOG_ERROR, "unknown compression\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
     }
 
     // flip upside down, add difference frame
     if (buf[0] & 1) { // keyframe
-        c->pic.pict_type = FF_I_TYPE;
-        c->pic.key_frame = 1;
+        picture->pict_type = AV_PICTURE_TYPE_I;
+        picture->key_frame = 1;
         switch (c->bpp) {
           case 16:
-              copy_frame_16(&c->pic, c->decomp_buf, c->linelen, c->height);
+              copy_frame_16(picture, c->decomp_buf, c->linelen, c->height);
               break;
           case 32:
-              copy_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
+              copy_frame_32(picture, c->decomp_buf, c->linelen, c->height);
               break;
           default:
-              copy_frame_default(&c->pic, c->decomp_buf, c->linelen, c->height);
+              copy_frame_default(picture, c->decomp_buf, FFALIGN(c->linelen, 4),
+                                 c->linelen, c->height);
         }
     } else {
-        c->pic.pict_type = FF_P_TYPE;
-        c->pic.key_frame = 0;
+        picture->pict_type = AV_PICTURE_TYPE_P;
+        picture->key_frame = 0;
         switch (c->bpp) {
           case 16:
-              add_frame_16(&c->pic, c->decomp_buf, c->linelen, c->height);
+              add_frame_16(picture, c->decomp_buf, c->linelen, c->height);
               break;
           case 32:
-              add_frame_32(&c->pic, c->decomp_buf, c->linelen, c->height);
+              add_frame_32(picture, c->decomp_buf, c->linelen, c->height);
               break;
           default:
-              add_frame_default(&c->pic, c->decomp_buf, c->linelen, c->height);
+              add_frame_default(picture, c->decomp_buf, FFALIGN(c->linelen, 4),
+                                c->linelen, c->height);
         }
     }
 
-    *picture = c->pic;
-    *data_size = sizeof(AVFrame);
+    *got_frame = 1;
     return buf_size;
 }
 
 static av_cold int decode_init(AVCodecContext *avctx) {
     CamStudioContext *c = avctx->priv_data;
-    if (avcodec_check_dimensions(avctx, avctx->height, avctx->width) < 0) {
-        return 1;
-    }
+    int stride;
     switch (avctx->bits_per_coded_sample) {
-        case 16: avctx->pix_fmt = PIX_FMT_RGB555; break;
-        case 24: avctx->pix_fmt = PIX_FMT_BGR24; break;
-        case 32: avctx->pix_fmt = PIX_FMT_RGB32; break;
+        case 16: avctx->pix_fmt = AV_PIX_FMT_RGB555; break;
+        case 24: avctx->pix_fmt = AV_PIX_FMT_BGR24; break;
+        case 32: avctx->pix_fmt = AV_PIX_FMT_RGB32; break;
         default:
             av_log(avctx, AV_LOG_ERROR,
                    "CamStudio codec error: invalid depth %i bpp\n",
                    avctx->bits_per_coded_sample);
-             return 1;
+            return AVERROR_INVALIDDATA;
     }
     c->bpp = avctx->bits_per_coded_sample;
-    c->pic.data[0] = NULL;
     c->linelen = avctx->width * avctx->bits_per_coded_sample / 8;
     c->height = avctx->height;
-    c->decomp_size = c->height * c->linelen;
-    c->decomp_buf = av_malloc(c->decomp_size + LZO_OUTPUT_PADDING);
+    stride = c->linelen;
+    if (avctx->bits_per_coded_sample == 24)
+        stride = FFALIGN(stride, 4);
+    c->decomp_size = c->height * stride;
+    c->decomp_buf = av_malloc(c->decomp_size + AV_LZO_OUTPUT_PADDING);
     if (!c->decomp_buf) {
         av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
-        return 1;
+        return AVERROR(ENOMEM);
     }
     return 0;
 }
@@ -243,21 +244,17 @@ static av_cold int decode_init(AVCodecContext *avctx) {
 static av_cold int decode_end(AVCodecContext *avctx) {
     CamStudioContext *c = avctx->priv_data;
     av_freep(&c->decomp_buf);
-    if (c->pic.data[0])
-        avctx->release_buffer(avctx, &c->pic);
     return 0;
 }
 
-AVCodec cscd_decoder = {
-    "camstudio",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_CSCD,
-    sizeof(CamStudioContext),
-    decode_init,
-    NULL,
-    decode_end,
-    decode_frame,
-    CODEC_CAP_DR1,
-    .long_name = NULL_IF_CONFIG_SMALL("CamStudio"),
+AVCodec ff_cscd_decoder = {
+    .name           = "camstudio",
+    .long_name      = NULL_IF_CONFIG_SMALL("CamStudio"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_CSCD,
+    .priv_data_size = sizeof(CamStudioContext),
+    .init           = decode_init,
+    .close          = decode_end,
+    .decode         = decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
 };
-