change gif muxer to simple gif encoder

Originally committed as revision 6874 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -82,6 +82,7 @@ OBJS-$(CONFIG_FLIC_DECODER)            += flicvideo.o
 OBJS-$(CONFIG_FOURXM_DECODER)          += 4xm.o
 OBJS-$(CONFIG_FRAPS_DECODER)           += fraps.o
 OBJS-$(CONFIG_GIF_DECODER)             += gifdec.o lzw.o
+OBJS-$(CONFIG_GIF_ENCODER)             += gif.o
 OBJS-$(CONFIG_H261_DECODER)            += h261.o
 OBJS-$(CONFIG_H261_ENCODER)            += h261.o
 OBJS-$(CONFIG_H264_DECODER)            += h264.o

libavcodec/allcodecs.c

@@ -68,6 +68,9 @@ void avcodec_register_all(void)
 #ifdef CONFIG_FLAC_ENCODER
     register_avcodec(&flac_encoder);
 #endif
+#ifdef CONFIG_GIF_ENCODER
+    register_avcodec(&gif_encoder);
+#endif
 #ifdef CONFIG_XVID
 #ifdef CONFIG_XVID_ENCODER
     register_avcodec(&xvid_encoder);

libavcodec/avcodec.h

@@ -37,8 +37,8 @@ extern "C" {
 #define AV_STRINGIFY(s)         AV_TOSTRING(s)
 #define AV_TOSTRING(s) #s
 
-#define LIBAVCODEC_VERSION_INT  ((51<<16)+(23<<8)+0)
-#define LIBAVCODEC_VERSION      51.23.0
+#define LIBAVCODEC_VERSION_INT  ((51<<16)+(24<<8)+0)
+#define LIBAVCODEC_VERSION      51.24.0
 #define LIBAVCODEC_BUILD        LIBAVCODEC_VERSION_INT
 
 #define LIBAVCODEC_IDENT        "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
@@ -2138,6 +2138,7 @@ extern AVCodec mp3lame_encoder;
 extern AVCodec oggvorbis_encoder;
 extern AVCodec faac_encoder;
 extern AVCodec flac_encoder;
+extern AVCodec gif_encoder;
 extern AVCodec xvid_encoder;
 extern AVCodec mpeg1video_encoder;
 extern AVCodec mpeg2video_encoder;

libavcodec/bytestream.h

@@ -47,4 +47,29 @@ static always_inline unsigned int bytestream_get_buffer(uint8_t **b, uint8_t *ds
     return size;
 }
 
+static always_inline void bytestream_put_le32(uint8_t **b, const unsigned int value)
+{
+    *(*b)++ = value;
+    *(*b)++ = value >> 8;
+    *(*b)++ = value >> 16;
+    *(*b)++ = value >> 24;
+}
+
+static always_inline void bytestream_put_le16(uint8_t **b, const unsigned int value)
+{
+    *(*b)++ = value;
+    *(*b)++ = value >> 8;
+}
+
+static always_inline void bytestream_put_byte(uint8_t **b, const unsigned int value)
+{
+    *(*b)++ = value;
+}
+
+static always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
+{
+    memcpy(*b, src, size);
+    (*b) += size;
+}
+
 #endif /* FFMPEG_BYTESTREAM_H */