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various security fixes and precautionary checks

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Originally committed as revision 3822 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2005-01-12 00:16:25 +00:00
parent f14d4e7e21
commit 0ecca7a49f
36 changed files with 314 additions and 89 deletions
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9
libavcodec/avcodec.h
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@@ -17,7 +17,7 @@ extern "C" {
#define FFMPEG_VERSION_INT 0x000409
#define FFMPEG_VERSION "0.4.9-pre1"
#define LIBAVCODEC_BUILD 4736
#define LIBAVCODEC_BUILD 4737
#define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
#define LIBAVCODEC_VERSION FFMPEG_VERSION
@@ -235,6 +235,12 @@ enum SampleFormat {
*/
#define FF_INPUT_BUFFER_PADDING_SIZE 8
/**
* minimum encoding buffer size.
* used to avoid some checks during header writing
*/
#define FF_MIN_BUFFER_SIZE 16384
/* motion estimation type, EPZS by default */
enum Motion_Est_ID {
ME_ZERO = 1,
@@ -2112,6 +2118,7 @@ int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic);
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic);
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic);
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height);
int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h);
enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
int avcodec_thread_init(AVCodecContext *s, int thread_count);