diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/ulti.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/ulti.c | 28 |
1 files changed, 8 insertions, 20 deletions
diff --git a/contrib/ffmpeg/libavcodec/ulti.c b/contrib/ffmpeg/libavcodec/ulti.c index d84a88dad..cf0c28f1f 100644 --- a/contrib/ffmpeg/libavcodec/ulti.c +++ b/contrib/ffmpeg/libavcodec/ulti.c @@ -17,7 +17,6 @@ * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * */ /** @@ -30,8 +29,8 @@ #include <string.h> #include <unistd.h> -#include "common.h" #include "avcodec.h" +#include "bytestream.h" #include "ulti_cb.h" @@ -201,7 +200,7 @@ static void ulti_grad(AVFrame *frame, int x, int y, uint8_t *Y, int chroma, int static int ulti_decode_frame(AVCodecContext *avctx, void *data, int *data_size, - uint8_t *buf, int buf_size) + const uint8_t *buf, int buf_size) { UltimotionDecodeContext *s=avctx->priv_data; int modifier = 0; @@ -306,9 +305,7 @@ static int ulti_decode_frame(AVCodecContext *avctx, case 2: if (modifier) { // unpack four luma samples - tmp = (*buf++) << 16; - tmp += (*buf++) << 8; - tmp += *buf++; + tmp = bytestream_get_be24(&buf); Y[0] = (tmp >> 18) & 0x3F; Y[1] = (tmp >> 12) & 0x3F; @@ -316,8 +313,7 @@ static int ulti_decode_frame(AVCodecContext *avctx, Y[3] = tmp & 0x3F; angle = 16; } else { // retrieve luma samples from codebook - tmp = (*buf++) << 8; - tmp += (*buf++); + tmp = bytestream_get_be16(&buf); angle = (tmp >> 12) & 0xF; tmp &= 0xFFF; @@ -333,33 +329,25 @@ static int ulti_decode_frame(AVCodecContext *avctx, if (modifier) { // all 16 luma samples uint8_t Luma[16]; - tmp = (*buf++) << 16; - tmp += (*buf++) << 8; - tmp += *buf++; + tmp = bytestream_get_be24(&buf); Luma[0] = (tmp >> 18) & 0x3F; Luma[1] = (tmp >> 12) & 0x3F; Luma[2] = (tmp >> 6) & 0x3F; Luma[3] = tmp & 0x3F; - tmp = (*buf++) << 16; - tmp += (*buf++) << 8; - tmp += *buf++; + tmp = bytestream_get_be24(&buf); Luma[4] = (tmp >> 18) & 0x3F; Luma[5] = (tmp >> 12) & 0x3F; Luma[6] = (tmp >> 6) & 0x3F; Luma[7] = tmp & 0x3F; - tmp = (*buf++) << 16; - tmp += (*buf++) << 8; - tmp += *buf++; + tmp = bytestream_get_be24(&buf); Luma[8] = (tmp >> 18) & 0x3F; Luma[9] = (tmp >> 12) & 0x3F; Luma[10] = (tmp >> 6) & 0x3F; Luma[11] = tmp & 0x3F; - tmp = (*buf++) << 16; - tmp += (*buf++) << 8; - tmp += *buf++; + tmp = bytestream_get_be24(&buf); Luma[12] = (tmp >> 18) & 0x3F; Luma[13] = (tmp >> 12) & 0x3F; Luma[14] = (tmp >> 6) & 0x3F; |