Merge remote branch 'qatar/master'

* qatar/master:
  graphparser: add a NULL check on the argument passed to strstr
  setdar: prefer "sar" over "par" in log info message
  fade: fix draw_slice() check on fade->factor value
  fade: make draw_slice() chroma check against planes 1 and 2
  win32: include the correct header in cmdutils.c
  ac3: fix memleak in fixed-point encoder
  flashsv: Return more meaningful error values.
  flashsv: Employ explicit AVCodec struct initializers.
  read AVI palette from the end of extradata
  cosmetics: K&R coding style and more whitespace for Flash Screen Video

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 65 insertions, 73 deletions

diff --git a/libavcodec/flashsv.c b/libavcodec/flashsv.c
index f5ffca08ac..12aabe6004 100644
--- a/libavcodec/flashsv.c
+++ b/libavcodec/flashsv.c
@@ -49,32 +49,30 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <zlib.h>
 
 #include "avcodec.h"
 #include "get_bits.h"
 
-#include <zlib.h>
-
 typedef struct FlashSVContext {
     AVCodecContext *avctx;
-    AVFrame frame;
-    int image_width, image_height;
-    int block_width, block_height;
-    uint8_t* tmpblock;
-    int block_size;
-    z_stream zstream;
+    AVFrame         frame;
+    int             image_width, image_height;
+    int             block_width, block_height;
+    uint8_t        *tmpblock;
+    int             block_size;
+    z_stream        zstream;
 } FlashSVContext;
 
 
 static void copy_region(uint8_t *sptr, uint8_t *dptr,
-        int dx, int dy, int h, int w, int stride)
+                        int dx, int dy, int h, int w, int stride)
 {
     int i;
 
-    for (i = dx+h; i > dx; i--)
-    {
-        memcpy(dptr+(i*stride)+dy*3, sptr, w*3);
-        sptr += w*3;
+    for (i = dx + h; i > dx; i--) {
+        memcpy(dptr + (i * stride) + dy * 3, sptr, w * 3);
+        sptr += w * 3;
     }
 }
 
@@ -84,9 +82,9 @@ static av_cold int flashsv_decode_init(AVCodecContext *avctx)
     FlashSVContext *s = avctx->priv_data;
     int zret; // Zlib return code
 
-    s->avctx = avctx;
+    s->avctx          = avctx;
     s->zstream.zalloc = Z_NULL;
-    s->zstream.zfree = Z_NULL;
+    s->zstream.zfree  = Z_NULL;
     s->zstream.opaque = Z_NULL;
     zret = inflateInit(&(s->zstream));
     if (zret != Z_OK) {
@@ -100,13 +98,12 @@ static av_cold int flashsv_decode_init(AVCodecContext *avctx)
 }
 
 
-static int flashsv_decode_frame(AVCodecContext *avctx,
-                                    void *data, int *data_size,
-                                    AVPacket *avpkt)
+static int flashsv_decode_frame(AVCodecContext *avctx, void *data,
+                                int *data_size, AVPacket *avpkt)
 {
     const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    FlashSVContext *s = avctx->priv_data;
+    int buf_size       = avpkt->size;
+    FlashSVContext *s  = avctx->priv_data;
     int h_blocks, v_blocks, h_part, v_part, i, j;
     GetBitContext gb;
 
@@ -119,66 +116,64 @@ static int flashsv_decode_frame(AVCodecContext *avctx,
     init_get_bits(&gb, buf, buf_size * 8);
 
     /* start to parse the bitstream */
-    s->block_width = 16* (get_bits(&gb, 4)+1);
-    s->image_width =     get_bits(&gb,12);
-    s->block_height= 16* (get_bits(&gb, 4)+1);
-    s->image_height=     get_bits(&gb,12);
+    s->block_width  = 16 * (get_bits(&gb,  4) + 1);
+    s->image_width  =       get_bits(&gb, 12);
+    s->block_height = 16 * (get_bits(&gb,  4) + 1);
+    s->image_height =       get_bits(&gb, 12);
 
     /* calculate amount of blocks and the size of the border blocks */
-    h_blocks = s->image_width / s->block_width;
-    h_part = s->image_width % s->block_width;
+    h_blocks = s->image_width  / s->block_width;
+    h_part   = s->image_width  % s->block_width;
     v_blocks = s->image_height / s->block_height;
-    v_part = s->image_height % s->block_height;
+    v_part   = s->image_height % s->block_height;
 
     /* the block size could change between frames, make sure the buffer
      * is large enough, if not, get a larger one */
-    if(s->block_size < s->block_width*s->block_height) {
+    if (s->block_size < s->block_width * s->block_height) {
         av_free(s->tmpblock);
-        if ((s->tmpblock = av_malloc(3*s->block_width*s->block_height)) == NULL) {
+        if ((s->tmpblock = av_malloc(3 * s->block_width * s->block_height)) == NULL) {
             av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
-            return -1;
+            return AVERROR(ENOMEM);
         }
     }
-    s->block_size = s->block_width*s->block_height;
+    s->block_size = s->block_width * s->block_height;
 
     /* init the image size once */
-    if((avctx->width==0) && (avctx->height==0)){
-        avctx->width = s->image_width;
+    if ((avctx->width == 0) && (avctx->height == 0)) {
+        avctx->width  = s->image_width;
         avctx->height = s->image_height;
     }
 
     /* check for changes of image width and image height */
     if ((avctx->width != s->image_width) || (avctx->height != s->image_height)) {
         av_log(avctx, AV_LOG_ERROR, "Frame width or height differs from first frames!\n");
-        av_log(avctx, AV_LOG_ERROR, "fh = %d, fv %d  vs  ch = %d, cv = %d\n",avctx->height,
-        avctx->width,s->image_height,s->image_width);
+        av_log(avctx, AV_LOG_ERROR, "fh = %d, fv %d  vs  ch = %d, cv = %d\n", avctx->height,
+        avctx->width,s->image_height, s->image_width);
         return -1;
     }
 
     av_log(avctx, AV_LOG_DEBUG, "image: %dx%d block: %dx%d num: %dx%d part: %dx%d\n",
-        s->image_width, s->image_height, s->block_width, s->block_height,
-        h_blocks, v_blocks, h_part, v_part);
+           s->image_width, s->image_height, s->block_width, s->block_height,
+           h_blocks, v_blocks, h_part, v_part);
 
-    s->frame.reference = 1;
+    s->frame.reference    = 1;
     s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
-    if(avctx->reget_buffer(avctx, &s->frame) < 0){
-      av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
-      return -1;
+    if (avctx->reget_buffer(avctx, &s->frame) < 0) {
+        av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
+        return -1;
     }
 
     /* loop over all block columns */
-    for (j = 0; j < v_blocks + (v_part?1:0); j++)
-    {
+    for (j = 0; j < v_blocks + (v_part ? 1 : 0); j++) {
 
-        int hp = j*s->block_height; // horiz position in frame
-        int hs = (j<v_blocks)?s->block_height:v_part; // size of block
+        int hp = j * s->block_height; // horiz position in frame
+        int hs = (j < v_blocks) ? s->block_height : v_part; // size of block
 
 
         /* loop over all block rows */
-        for (i = 0; i < h_blocks + (h_part?1:0); i++)
-        {
-            int wp = i*s->block_width; // vert position in frame
-            int ws = (i<h_blocks)?s->block_width:h_part; // size of block
+        for (i = 0; i < h_blocks + (h_part ? 1 : 0); i++) {
+            int wp = i * s->block_width; // vert position in frame
+            int ws = (i < h_blocks) ? s->block_width : h_part; // size of block
 
             /* get the size of the compressed zlib chunk */
             int size = get_bits(&gb, 16);
@@ -193,30 +188,28 @@ static int flashsv_decode_frame(AVCodecContext *avctx,
             } else {
                 /* decompress block */
                 int ret = inflateReset(&(s->zstream));
-                if (ret != Z_OK)
-                {
+                if (ret != Z_OK) {
                     av_log(avctx, AV_LOG_ERROR, "error in decompression (reset) of block %dx%d\n", i, j);
                     /* return -1; */
                 }
-                s->zstream.next_in = buf+(get_bits_count(&gb)/8);
-                s->zstream.avail_in = size;
-                s->zstream.next_out = s->tmpblock;
+                s->zstream.next_in   = buf + (get_bits_count(&gb) / 8);
+                s->zstream.avail_in  = size;
+                s->zstream.next_out  = s->tmpblock;
                 s->zstream.avail_out = s->block_size*3;
                 ret = inflate(&(s->zstream), Z_FINISH);
-                if (ret == Z_DATA_ERROR)
-                {
+                if (ret == Z_DATA_ERROR) {
                     av_log(avctx, AV_LOG_ERROR, "Zlib resync occurred\n");
                     inflateSync(&(s->zstream));
                     ret = inflate(&(s->zstream), Z_FINISH);
                 }
 
-                if ((ret != Z_OK) && (ret != Z_STREAM_END))
-                {
+                if ((ret != Z_OK) && (ret != Z_STREAM_END)) {
                     av_log(avctx, AV_LOG_ERROR, "error in decompression of block %dx%d: %d\n", i, j, ret);
                     /* return -1; */
                 }
-                copy_region(s->tmpblock, s->frame.data[0], s->image_height-(hp+hs+1), wp, hs, ws, s->frame.linesize[0]);
-                skip_bits_long(&gb, 8*size);   /* skip the consumed bits */
+                copy_region(s->tmpblock, s->frame.data[0], s->image_height - (hp + hs + 1),
+                            wp, hs, ws, s->frame.linesize[0]);
+                skip_bits_long(&gb, 8 * size);   /* skip the consumed bits */
             }
         }
     }
@@ -224,9 +217,9 @@ static int flashsv_decode_frame(AVCodecContext *avctx,
     *data_size = sizeof(AVFrame);
     *(AVFrame*)data = s->frame;
 
-    if ((get_bits_count(&gb)/8) != buf_size)
+    if ((get_bits_count(&gb) / 8) != buf_size)
         av_log(avctx, AV_LOG_ERROR, "buffer not fully consumed (%d != %d)\n",
-            buf_size, (get_bits_count(&gb)/8));
+               buf_size, (get_bits_count(&gb) / 8));
 
     /* report that the buffer was completely consumed */
     return buf_size;
@@ -249,15 +242,14 @@ static av_cold int flashsv_decode_end(AVCodecContext *avctx)
 
 
 AVCodec ff_flashsv_decoder = {
-    "flashsv",
-    AVMEDIA_TYPE_VIDEO,
-    CODEC_ID_FLASHSV,
-    sizeof(FlashSVContext),
-    flashsv_decode_init,
-    NULL,
-    flashsv_decode_end,
-    flashsv_decode_frame,
-    CODEC_CAP_DR1,
-    .pix_fmts = (const enum PixelFormat[]){PIX_FMT_BGR24, PIX_FMT_NONE},
-    .long_name = NULL_IF_CONFIG_SMALL("Flash Screen Video v1"),
+    .name           = "flashsv",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = CODEC_ID_FLASHSV,
+    .priv_data_size = sizeof(FlashSVContext),
+    .init           = flashsv_decode_init,
+    .close          = flashsv_decode_end,
+    .decode         = flashsv_decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
+    .pix_fmts       = (const enum PixelFormat[]){PIX_FMT_BGR24, PIX_FMT_NONE},
+    .long_name      = NULL_IF_CONFIG_SMALL("Flash Screen Video v1"),
 };