int gce_delay;
/* LZW compatible decoder */
- uint8_t *bytestream;
- uint8_t *bytestream_end;
+ const uint8_t *bytestream;
+ const uint8_t *bytestream_end;
LZWState *lzw;
/* aux buffers */
n = (1 << bits_per_pixel);
spal = palette;
for(i = 0; i < n; i++) {
- s->image_palette[i] = (0xff << 24) |
- (spal[0] << 16) | (spal[1] << 8) | (spal[2]);
+ s->image_palette[i] = (0xff << 24) | AV_RB24(spal);
spal += 3;
}
for(; i < 256; i++)
/* now get the image data */
code_size = bytestream_get_byte(&s->bytestream);
- //TODO: add proper data size
- ff_lzw_decode_init(s->lzw, code_size, s->bytestream, 0, FF_LZW_GIF);
+ ff_lzw_decode_init(s->lzw, code_size, s->bytestream,
+ s->bytestream_end - s->bytestream, FF_LZW_GIF);
/* read all the image */
linesize = s->picture.linesize[0];
y1 += 8;
ptr += linesize * 8;
if (y1 >= height) {
- y1 = 4;
- if (pass == 0)
- ptr = ptr1 + linesize * 4;
- else
- ptr = ptr1 + linesize * 2;
+ y1 = pass ? 2 : 4;
+ ptr = ptr1 + linesize * y1;
pass++;
}
break;
#endif
switch (code) {
case ',':
- if (gif_read_image(s) < 0)
- return -1;
- return 0;
- case ';':
- /* end of image */
- return -1;
+ return gif_read_image(s);
case '!':
if (gif_read_extension(s) < 0)
return -1;
break;
+ case ';':
+ /* end of image */
default:
- /* error or errneous EOF */
+ /* error or erroneous EOF */
return -1;
}
}
return -1;
}
-static int gif_decode_init(AVCodecContext *avctx)
+static av_cold int gif_decode_init(AVCodecContext *avctx)
{
GifState *s = avctx->priv_data;
return 0;
}
-static int gif_decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
+static int gif_decode_frame(AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size)
{
GifState *s = avctx->priv_data;
AVFrame *picture = data;
return s->bytestream - buf;
}
-static int gif_decode_close(AVCodecContext *avctx)
+static av_cold int gif_decode_close(AVCodecContext *avctx)
{
GifState *s = avctx->priv_data;
NULL,
gif_decode_close,
gif_decode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("GIF (Graphics Interchange Format)"),
};