* Duck TrueMotion 1.0 Decoder
* Copyright (C) 2003 Alex Beregszaszi & Mike Melanson
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "dsputil.h"
-#include "libavcore/imgutils.h"
+#include "libavutil/imgutils.h"
#include "truemotion1data.h"
static int truemotion1_decode_header(TrueMotion1Context *s)
{
int i;
+ int width_shift = 0;
int new_pix_fmt;
struct frame_header header;
- uint8_t header_buffer[128]; /* logical maximum size of the header */
+ uint8_t header_buffer[128] = { 0 }; /* logical maximum size of the header */
const uint8_t *sel_vector_table;
header.header_size = ((s->buf[0] >> 5) | (s->buf[0] << 3)) & 0x7f;
}
/* unscramble the header bytes with a XOR operation */
- memset(header_buffer, 0, 128);
for (i = 1; i < header.header_size; i++)
header_buffer[i - 1] = s->buf[i] ^ s->buf[i + 1];
s->flags = FLAG_KEYFRAME;
if (s->flags & FLAG_SPRITE) {
- av_log(s->avctx, AV_LOG_INFO, "SPRITE frame found, please report the sample to the developers\n");
+ av_log_ask_for_sample(s->avctx, "SPRITE frame found.\n");
/* FIXME header.width, height, xoffset and yoffset aren't initialized */
-#if 0
- s->w = header.width;
- s->h = header.height;
- s->x = header.xoffset;
- s->y = header.yoffset;
-#else
return -1;
-#endif
} else {
s->w = header.xsize;
s->h = header.ysize;
if ((s->w < 213) && (s->h >= 176))
{
s->flags |= FLAG_INTERPOLATED;
- av_log(s->avctx, AV_LOG_INFO, "INTERPOLATION selected, please report the sample to the developers\n");
+ av_log_ask_for_sample(s->avctx, "INTERPOLATION selected.\n");
}
}
}
- if (av_image_check_size(s->w, s->h, 0, s->avctx) < 0)
- return -1;
if (header.compression >= 17) {
av_log(s->avctx, AV_LOG_ERROR, "invalid compression type (%d)\n", header.compression);
if ((header.compression & 1) && header.header_type)
sel_vector_table = pc_tbl2;
else {
- if (header.vectable < 4)
+ if (header.vectable > 0 && header.vectable < 4)
sel_vector_table = tables[header.vectable - 1];
else {
av_log(s->avctx, AV_LOG_ERROR, "invalid vector table id (%d)\n", header.vectable);
}
}
- if (compression_types[header.compression].algorithm == ALGO_RGB24H)
+ if (compression_types[header.compression].algorithm == ALGO_RGB24H) {
new_pix_fmt = PIX_FMT_RGB32;
- else
+ width_shift = 1;
+ } else
new_pix_fmt = PIX_FMT_RGB555; // RGB565 is supported as well
+ s->w >>= width_shift;
+ if (av_image_check_size(s->w, s->h, 0, s->avctx) < 0)
+ return -1;
+
if (s->w != s->avctx->width || s->h != s->avctx->height ||
new_pix_fmt != s->avctx->pix_fmt) {
if (s->frame.data[0])
s->avctx->release_buffer(s->avctx, &s->frame);
+ s->avctx->sample_aspect_ratio = (AVRational){ 1 << width_shift, 1 };
s->avctx->pix_fmt = new_pix_fmt;
avcodec_set_dimensions(s->avctx, s->w, s->h);
av_fast_malloc(&s->vert_pred, &s->vert_pred_size, s->avctx->width * sizeof(unsigned int));
/* There is 1 change bit per 4 pixels, so each change byte represents
* 32 pixels; divide width by 4 to obtain the number of change bits and
* then round up to the nearest byte. */
- s->mb_change_bits_row_size = ((s->avctx->width >> 2) + 7) >> 3;
+ s->mb_change_bits_row_size = ((s->avctx->width >> (2 - width_shift)) + 7) >> 3;
if ((header.deltaset != s->last_deltaset) || (header.vectable != s->last_vectable))
{
}
}
- pixels_left -= 4;
+ pixels_left -= 2;
}
/* next change row */
return 0;
}
-AVCodec truemotion1_decoder = {
- "truemotion1",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_TRUEMOTION1,
- sizeof(TrueMotion1Context),
- truemotion1_decode_init,
- NULL,
- truemotion1_decode_end,
- truemotion1_decode_frame,
- CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 1.0"),
+AVCodec ff_truemotion1_decoder = {
+ .name = "truemotion1",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_TRUEMOTION1,
+ .priv_data_size = sizeof(TrueMotion1Context),
+ .init = truemotion1_decode_init,
+ .close = truemotion1_decode_end,
+ .decode = truemotion1_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 1.0"),
};
projects / ffmpeg / blobdiff