* Quicktime Graphics (SMC) Video Decoder
* Copyright (C) 2003 the ffmpeg project
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* 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
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <string.h>
#include <unistd.h>
-#include "common.h"
#include "avcodec.h"
#include "dsputil.h"
} SmcContext;
-#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
-#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
- (((uint8_t*)(x))[1] << 16) | \
- (((uint8_t*)(x))[2] << 8) | \
- ((uint8_t*)(x))[3])
#define GET_BLOCK_COUNT() \
(opcode & 0x10) ? (1 + s->buf[stream_ptr++]) : 1 + (opcode & 0x0F);
total_blocks--; \
if (total_blocks < 0) \
{ \
- printf("warning: block counter just went negative (this should not happen)\n"); \
+ av_log(s->avctx, AV_LOG_INFO, "warning: block counter just went negative (this should not happen)\n"); \
return; \
} \
}
s->avctx->palctrl->palette_changed = 0;
}
- chunk_size = BE_32(&s->buf[stream_ptr]) & 0x00FFFFFF;
+ chunk_size = AV_RB32(&s->buf[stream_ptr]) & 0x00FFFFFF;
stream_ptr += 4;
if (chunk_size != s->size)
- printf("warning: MOV chunk size != encoded chunk size (%d != %d); using MOV chunk size\n",
+ av_log(s->avctx, AV_LOG_INFO, "warning: MOV chunk size != encoded chunk size (%d != %d); using MOV chunk size\n",
chunk_size, s->size);
chunk_size = s->size;
- total_blocks = (s->avctx->width * s->avctx->height) / (4 * 4);
+ total_blocks = ((s->avctx->width + 3) / 4) * ((s->avctx->height + 3) / 4);
/* traverse through the blocks */
while (total_blocks) {
/* sanity checks */
/* make sure stream ptr hasn't gone out of bounds */
if (stream_ptr > chunk_size) {
- printf("SMC decoder just went out of bounds (stream ptr = %d, chunk size = %d)\n",
+ av_log(s->avctx, AV_LOG_INFO, "SMC decoder just went out of bounds (stream ptr = %d, chunk size = %d)\n",
stream_ptr, chunk_size);
return;
}
/* make sure the row pointer hasn't gone wild */
if (row_ptr >= image_size) {
- printf("SMC decoder just went out of bounds (row ptr = %d, height = %d)\n",
+ av_log(s->avctx, AV_LOG_INFO, "SMC decoder just went out of bounds (row ptr = %d, height = %d)\n",
row_ptr, image_size);
return;
}
/* sanity check */
if ((row_ptr == 0) && (pixel_ptr == 0)) {
- printf("encountered repeat block opcode (%02X) but no blocks rendered yet\n",
+ av_log(s->avctx, AV_LOG_INFO, "encountered repeat block opcode (%02X) but no blocks rendered yet\n",
opcode & 0xF0);
break;
}
/* figure out where the previous block started */
if (pixel_ptr == 0)
- prev_block_ptr1 =
+ prev_block_ptr1 =
(row_ptr - s->avctx->width * 4) + s->avctx->width - 4;
else
prev_block_ptr1 = row_ptr + pixel_ptr - 4;
/* sanity check */
if ((row_ptr == 0) && (pixel_ptr < 2 * 4)) {
- printf("encountered repeat block opcode (%02X) but not enough blocks rendered yet\n",
+ av_log(s->avctx, AV_LOG_INFO, "encountered repeat block opcode (%02X) but not enough blocks rendered yet\n",
opcode & 0xF0);
break;
}
/* figure out where the previous 2 blocks started */
if (pixel_ptr == 0)
- prev_block_ptr1 = (row_ptr - s->avctx->width * 4) +
+ prev_block_ptr1 = (row_ptr - s->avctx->width * 4) +
s->avctx->width - 4 * 2;
else if (pixel_ptr == 4)
prev_block_ptr1 = (row_ptr - s->avctx->width * 4) + row_inc;
color_table_index = CPAIR * s->buf[stream_ptr++];
while (n_blocks--) {
- color_flags = BE_16(&s->buf[stream_ptr]);
+ color_flags = AV_RB16(&s->buf[stream_ptr]);
stream_ptr += 2;
flag_mask = 0x8000;
block_ptr = row_ptr + pixel_ptr;
color_table_index = CQUAD * s->buf[stream_ptr++];
while (n_blocks--) {
- color_flags = BE_32(&s->buf[stream_ptr]);
+ color_flags = AV_RB32(&s->buf[stream_ptr]);
stream_ptr += 4;
/* flag mask actually acts as a bit shift count here */
flag_mask = 30;
block_ptr = row_ptr + pixel_ptr;
for (pixel_y = 0; pixel_y < 4; pixel_y++) {
for (pixel_x = 0; pixel_x < 4; pixel_x++) {
- pixel = color_table_index +
+ pixel = color_table_index +
((color_flags >> flag_mask) & 0x03);
flag_mask -= 2;
pixels[block_ptr++] = s->color_quads[pixel];
flag_mask = 21;
}
for (pixel_x = 0; pixel_x < 4; pixel_x++) {
- pixel = color_table_index +
+ pixel = color_table_index +
((color_flags >> flag_mask) & 0x07);
flag_mask -= 3;
pixels[block_ptr++] = s->color_octets[pixel];
break;
case 0xF0:
- printf("0xF0 opcode seen in SMC chunk (xine developers would like to know)\n");
+ av_log(s->avctx, AV_LOG_INFO, "0xF0 opcode seen in SMC chunk (contact the developers)\n");
break;
}
}
static int smc_decode_init(AVCodecContext *avctx)
{
- SmcContext *s = (SmcContext *)avctx->priv_data;
+ SmcContext *s = avctx->priv_data;
s->avctx = avctx;
avctx->pix_fmt = PIX_FMT_PAL8;
- avctx->has_b_frames = 0;
dsputil_init(&s->dsp, avctx);
s->frame.data[0] = NULL;
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
- SmcContext *s = (SmcContext *)avctx->priv_data;
-
- /* no supplementary picture */
- if (buf_size == 0)
- return 0;
+ SmcContext *s = avctx->priv_data;
s->buf = buf;
s->size = buf_size;
s->frame.reference = 1;
- s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE |
+ s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE |
FF_BUFFER_HINTS_REUSABLE | FF_BUFFER_HINTS_READABLE;
if (avctx->reget_buffer(avctx, &s->frame)) {
- printf ("reget_buffer() failed\n");
+ av_log(s->avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
return -1;
}
static int smc_decode_end(AVCodecContext *avctx)
{
- SmcContext *s = (SmcContext *)avctx->priv_data;
+ SmcContext *s = avctx->priv_data;
if (s->frame.data[0])
avctx->release_buffer(avctx, &s->frame);
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