*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
* http://www.pcisys.net/~melanson/codecs/
*
* This decoder outputs either PAL8 or RGB555 data, depending on the
- * whether a RGB palette was passed through via extradata; if the extradata
- * is present, then the data is PAL8; RGB555 otherwise.
+ * whether a RGB palette was passed through palctrl;
+ * if it's present, then the data is PAL8; RGB555 otherwise.
*/
#include <stdio.h>
#include "dsputil.h"
#define PALETTE_COUNT 256
-#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
#define CHECK_STREAM_PTR(n) \
if ((stream_ptr + n) > s->size ) { \
- printf (" MS Video-1 warning: stream_ptr out of bounds (%d >= %d)\n", \
+ av_log(s->avctx, AV_LOG_ERROR, " MS Video-1 warning: stream_ptr out of bounds (%d >= %d)\n", \
stream_ptr + n, s->size); \
return; \
}
-#define COPY_PREV_BLOCK() \
- pixel_ptr = block_ptr; \
- for (pixel_y = 0; pixel_y < 4; pixel_y++) { \
- for (pixel_x = 0; pixel_x < 4; pixel_x++, pixel_ptr++) \
- pixels[pixel_ptr] = prev_pixels[pixel_ptr]; \
- pixel_ptr -= row_dec; \
- }
-
typedef struct Msvideo1Context {
AVCodecContext *avctx;
DSPContext dsp;
AVFrame frame;
- AVFrame prev_frame;
unsigned char *buf;
int size;
int mode_8bit; /* if it's not 8-bit, it's 16-bit */
- unsigned char palette[PALETTE_COUNT * 4];
} Msvideo1Context;
static int msvideo1_decode_init(AVCodecContext *avctx)
{
Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data;
- int i;
- unsigned char r, g, b;
- unsigned char *raw_palette;
- unsigned int *palette32;
s->avctx = avctx;
- /* figure out the colorspace based on the presence of a palette in
- * extradata */
- if (s->avctx->extradata_size) {
+ /* figure out the colorspace based on the presence of a palette */
+ if (s->avctx->palctrl) {
s->mode_8bit = 1;
- /* load up the palette */
- palette32 = (unsigned int *)s->palette;
- raw_palette = (unsigned char *)s->avctx->extradata;
- for (i = 0; i < s->avctx->extradata_size / 4; i++) {
- b = *raw_palette++;
- g = *raw_palette++;
- r = *raw_palette++;
- raw_palette++;
- palette32[i] = (r << 16) | (g << 8) | (b);
- }
avctx->pix_fmt = PIX_FMT_PAL8;
} else {
s->mode_8bit = 0;
avctx->has_b_frames = 0;
dsputil_init(&s->dsp, avctx);
- s->frame.data[0] = s->prev_frame.data[0] = NULL;
+ s->frame.data[0] = NULL;
return 0;
}
int skip_blocks;
unsigned char colors[8];
unsigned char *pixels = s->frame.data[0];
- unsigned char *prev_pixels = s->prev_frame.data[0];
int stride = s->frame.linesize[0];
stream_ptr = 0;
for (block_x = blocks_wide; block_x > 0; block_x--) {
/* check if this block should be skipped */
if (skip_blocks) {
- COPY_PREV_BLOCK();
block_ptr += block_inc;
skip_blocks--;
total_blocks--;
else if ((byte_b & 0xFC) == 0x84) {
/* skip code, but don't count the current block */
skip_blocks = ((byte_b - 0x84) << 8) + byte_a - 1;
- COPY_PREV_BLOCK();
} else if (byte_b < 0x80) {
/* 2-color encoding */
flags = (byte_b << 8) | byte_a;
for (pixel_y = 0; pixel_y < 4; pixel_y++) {
for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
- pixels[pixel_ptr++] =
- colors[((pixel_y & 0x2) << 1) +
+ pixels[pixel_ptr++] =
+ colors[((pixel_y & 0x2) << 1) +
(pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
pixel_ptr -= row_dec;
}
}
/* make the palette available on the way out */
- if (s->avctx->pix_fmt == PIX_FMT_PAL8)
- memcpy(s->frame.data[1], s->palette, PALETTE_COUNT * 4);
+ if (s->avctx->pix_fmt == PIX_FMT_PAL8) {
+ memcpy(s->frame.data[1], s->avctx->palctrl->palette, AVPALETTE_SIZE);
+ if (s->avctx->palctrl->palette_changed) {
+ s->frame.palette_has_changed = 1;
+ s->avctx->palctrl->palette_changed = 0;
+ }
+ }
}
static void msvideo1_decode_16bit(Msvideo1Context *s)
int skip_blocks;
unsigned short colors[8];
unsigned short *pixels = (unsigned short *)s->frame.data[0];
- unsigned short *prev_pixels = (unsigned short *)s->prev_frame.data[0];
int stride = s->frame.linesize[0] / 2;
stream_ptr = 0;
for (block_x = blocks_wide; block_x > 0; block_x--) {
/* check if this block should be skipped */
if (skip_blocks) {
- COPY_PREV_BLOCK();
block_ptr += block_inc;
skip_blocks--;
total_blocks--;
} else if ((byte_b & 0xFC) == 0x84) {
/* skip code, but don't count the current block */
skip_blocks = ((byte_b - 0x84) << 8) + byte_a - 1;
- COPY_PREV_BLOCK();
} else if (byte_b < 0x80) {
/* 2- or 8-color encoding modes */
flags = (byte_b << 8) | byte_a;
for (pixel_y = 0; pixel_y < 4; pixel_y++) {
for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
- pixels[pixel_ptr++] =
- colors[((pixel_y & 0x2) << 1) +
+ pixels[pixel_ptr++] =
+ colors[((pixel_y & 0x2) << 1) +
(pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
pixel_ptr -= row_dec;
}
s->buf = buf;
s->size = buf_size;
- if (avctx->get_buffer(avctx, &s->frame)) {
- printf (" MS Video-1 Video: get_buffer() failed\n");
+ 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)) {
+ av_log(s->avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
return -1;
}
else
msvideo1_decode_16bit(s);
- if (s->prev_frame.data[0])
- avctx->release_buffer(avctx, &s->prev_frame);
-
- /* shuffle frames */
- s->prev_frame = s->frame;
-
*data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame;
{
Msvideo1Context *s = (Msvideo1Context *)avctx->priv_data;
- if (s->prev_frame.data[0])
- avctx->release_buffer(avctx, &s->prev_frame);
+ if (s->frame.data[0])
+ avctx->release_buffer(avctx, &s->frame);
return 0;
}
projects / ffmpeg / blobdiff