* Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
* written, produced, and directed by Alan Smithee
*
- * 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
+ * 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"
-#include "mpegvideo.h"
+#include "bytestream.h"
#include "indeo3data.h"
unsigned short *corrector_type;
} Indeo3DecodeContext;
-static int corrector_type_0[24] = {
+static const int corrector_type_0[24] = {
195, 159, 133, 115, 101, 93, 87, 77,
195, 159, 133, 115, 101, 93, 87, 77,
128, 79, 79, 79, 79, 79, 79, 79
};
-static int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
+static const int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
-static void build_modpred(Indeo3DecodeContext *s)
+static av_cold void build_modpred(Indeo3DecodeContext *s)
{
int i, j;
}
static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur,
- unsigned char *ref, int width, int height, unsigned char *buf1,
- long fflags2, unsigned char *hdr,
- unsigned char *buf2, int min_width_160);
-
-#ifndef min
-#define min(a,b) ((a) < (b) ? (a) : (b))
-#endif
+ unsigned char *ref, int width, int height, const unsigned char *buf1,
+ long fflags2, const unsigned char *hdr,
+ const unsigned char *buf2, int min_width_160);
/* ---------------------------------------------------------------------- */
-static void iv_alloc_frames(Indeo3DecodeContext *s)
+static av_cold void iv_alloc_frames(Indeo3DecodeContext *s)
{
int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
chroma_pixels, i;
}
/* ---------------------------------------------------------------------- */
-static void iv_free_func(Indeo3DecodeContext *s)
+static av_cold void iv_free_func(Indeo3DecodeContext *s)
{
int i;
/* ---------------------------------------------------------------------- */
static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
- unsigned char *buf, int buf_size)
+ const unsigned char *buf, int buf_size)
{
unsigned int hdr_width, hdr_height,
chroma_width, chroma_height;
unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
- unsigned char *hdr_pos, *buf_pos;
+ const unsigned char *hdr_pos, *buf_pos;
buf_pos = buf;
buf_pos += 18;
- fflags1 = le2me_16(*(uint16_t *)buf_pos);
- buf_pos += 2;
- fflags3 = le2me_32(*(uint32_t *)buf_pos);
- buf_pos += 4;
+ fflags1 = bytestream_get_le16(&buf_pos);
+ fflags3 = bytestream_get_le32(&buf_pos);
fflags2 = *buf_pos++;
buf_pos += 3;
- hdr_height = le2me_16(*(uint16_t *)buf_pos);
- buf_pos += 2;
- hdr_width = le2me_16(*(uint16_t *)buf_pos);
+ hdr_height = bytestream_get_le16(&buf_pos);
+ hdr_width = bytestream_get_le16(&buf_pos);
if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
return -1;
- buf_pos += 2;
chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
- offs1 = le2me_32(*(uint32_t *)buf_pos);
+ offs1 = bytestream_get_le32(&buf_pos);
+ offs2 = bytestream_get_le32(&buf_pos);
+ offs3 = bytestream_get_le32(&buf_pos);
buf_pos += 4;
- offs2 = le2me_32(*(uint32_t *)buf_pos);
- buf_pos += 4;
- offs3 = le2me_32(*(uint32_t *)buf_pos);
- buf_pos += 8;
hdr_pos = buf_pos;
if(fflags3 == 0x80) return 4;
}
buf_pos = buf + 16 + offs1;
- offs = le2me_32(*(uint32_t *)buf_pos);
- buf_pos += 4;
+ offs = bytestream_get_le32(&buf_pos);
iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
- min(hdr_width, 160));
+ FFMIN(hdr_width, 160));
if (!(s->avctx->flags & CODEC_FLAG_GRAY))
{
buf_pos = buf + 16 + offs2;
- offs = le2me_32(*(uint32_t *)buf_pos);
- buf_pos += 4;
+ offs = bytestream_get_le32(&buf_pos);
iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
- min(chroma_width, 40));
+ FFMIN(chroma_width, 40));
buf_pos = buf + 16 + offs3;
- offs = le2me_32(*(uint32_t *)buf_pos);
- buf_pos += 4;
+ offs = bytestream_get_le32(&buf_pos);
iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
- min(chroma_width, 40));
+ FFMIN(chroma_width, 40));
}
static void iv_Decode_Chunk(Indeo3DecodeContext *s,
unsigned char *cur, unsigned char *ref, int width, int height,
- unsigned char *buf1, long fflags2, unsigned char *hdr,
- unsigned char *buf2, int min_width_160)
+ const unsigned char *buf1, long fflags2, const unsigned char *hdr,
+ const unsigned char *buf2, int min_width_160)
{
unsigned char bit_buf;
unsigned long bit_pos, lv, lv1, lv2;
long *width_tbl, width_tbl_arr[10];
- signed char *ref_vectors;
+ const signed char *ref_vectors;
unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
uint32_t *cur_lp, *ref_lp;
const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
} else if(cmd == 3) {
if(strip->usl7 == 0) {
strip->usl7 = 1;
- ref_vectors = buf2 + (*buf1 * 2);
+ ref_vectors = (const signed char*)buf2 + (*buf1 * 2);
buf1++;
continue;
}
}
}
-static int indeo3_decode_init(AVCodecContext *avctx)
+static av_cold int indeo3_decode_init(AVCodecContext *avctx)
{
Indeo3DecodeContext *s = avctx->priv_data;
s->width = avctx->width;
s->height = avctx->height;
avctx->pix_fmt = PIX_FMT_YUV410P;
- avctx->has_b_frames = 0;
build_modpred(s);
iv_alloc_frames(s);
static int indeo3_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- unsigned char *buf, int buf_size)
+ const unsigned char *buf, int buf_size)
{
Indeo3DecodeContext *s=avctx->priv_data;
unsigned char *src, *dest;
return buf_size;
}
-static int indeo3_decode_end(AVCodecContext *avctx)
+static av_cold int indeo3_decode_end(AVCodecContext *avctx)
{
Indeo3DecodeContext *s = avctx->priv_data;
projects / ffmpeg / blobdiff