/*
* VC3/DNxHD decoder.
- * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>.
+ * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
*
- * 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
*/
//#define TRACE
//#define DEBUG
+#include "libavutil/imgutils.h"
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dnxhddata.h"
#include "dsputil.h"
-#include "mpegvideo.h"
typedef struct {
AVCodecContext *avctx;
VLC ac_vlc, dc_vlc, run_vlc;
int last_dc[3];
DSPContext dsp;
- DECLARE_ALIGNED_16(DCTELEM, blocks[8][64]);
- DECLARE_ALIGNED_8(ScanTable, scantable);
+ DECLARE_ALIGNED(16, DCTELEM, blocks)[8][64];
+ ScanTable scantable;
const CIDEntry *cid_table;
} DNXHDContext;
#define DNXHD_VLC_BITS 9
#define DNXHD_DC_VLC_BITS 7
-static int dnxhd_decode_init(AVCodecContext *avctx)
+static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
{
DNXHDContext *ctx = avctx->priv_data;
ctx->avctx = avctx;
dsputil_init(&ctx->dsp, avctx);
avctx->coded_frame = &ctx->picture;
- ctx->picture.type = FF_I_TYPE;
+ ctx->picture.type = AV_PICTURE_TYPE_I;
+ ctx->picture.key_frame = 1;
return 0;
}
return 0;
}
-static int dnxhd_decode_header(DNXHDContext *ctx, uint8_t *buf, int buf_size, int first_field)
+static int dnxhd_decode_header(DNXHDContext *ctx, const uint8_t *buf, int buf_size, int first_field)
{
static const uint8_t header_prefix[] = { 0x00, 0x00, 0x02, 0x80, 0x01 };
int i;
ctx->height = AV_RB16(buf + 0x18);
ctx->width = AV_RB16(buf + 0x1a);
- dprintf(ctx->avctx, "width %d, heigth %d\n", ctx->width, ctx->height);
+ av_dlog(ctx->avctx, "width %d, heigth %d\n", ctx->width, ctx->height);
if (buf[0x21] & 0x40) {
av_log(ctx->avctx, AV_LOG_ERROR, "10 bit per component\n");
}
ctx->cid = AV_RB32(buf + 0x28);
- dprintf(ctx->avctx, "compression id %d\n", ctx->cid);
+ av_dlog(ctx->avctx, "compression id %d\n", ctx->cid);
if (dnxhd_init_vlc(ctx, ctx->cid) < 0)
return -1;
ctx->mb_width = ctx->width>>4;
ctx->mb_height = buf[0x16d];
- if (ctx->mb_height > 68) {
- av_log(ctx->avctx, AV_LOG_ERROR, "mb height too big\n");
+ av_dlog(ctx->avctx, "mb width %d, mb height %d\n", ctx->mb_width, ctx->mb_height);
+
+ if ((ctx->height+15)>>4 == ctx->mb_height && ctx->picture.interlaced_frame)
+ ctx->height <<= 1;
+
+ if (ctx->mb_height > 68 ||
+ (ctx->mb_height<<ctx->picture.interlaced_frame) > (ctx->height+15)>>4) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "mb height too big: %d\n", ctx->mb_height);
return -1;
}
- dprintf(ctx->avctx, "mb width %d, mb height %d\n", ctx->mb_width, ctx->mb_height);
for (i = 0; i < ctx->mb_height; i++) {
ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i<<2));
- dprintf(ctx->avctx, "mb scan index %d\n", ctx->mb_scan_index[i]);
+ av_dlog(ctx->avctx, "mb scan index %d\n", ctx->mb_scan_index[i]);
if (buf_size < ctx->mb_scan_index[i] + 0x280) {
av_log(ctx->avctx, AV_LOG_ERROR, "invalid mb scan index\n");
return -1;
int dct_offset;
int qscale, i;
- ctx->dsp.clear_blocks(ctx->blocks[0]);
- ctx->dsp.clear_blocks(ctx->blocks[2]); // FIXME change clear blocks to take block amount
-
qscale = get_bits(&ctx->gb, 11);
skip_bits1(&ctx->gb);
//av_log(ctx->avctx, AV_LOG_DEBUG, "qscale %d\n", qscale);
for (i = 0; i < 8; i++) {
+ ctx->dsp.clear_block(ctx->blocks[i]);
dnxhd_decode_dct_block(ctx, ctx->blocks[i], i, qscale);
}
return 0;
}
-static int dnxhd_decode_macroblocks(DNXHDContext *ctx, uint8_t *buf, int buf_size)
+static int dnxhd_decode_macroblocks(DNXHDContext *ctx, const uint8_t *buf, int buf_size)
{
int x, y;
for (y = 0; y < ctx->mb_height; y++) {
}
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
DNXHDContext *ctx = avctx->priv_data;
AVFrame *picture = data;
int first_field = 1;
- dprintf(avctx, "frame size %d\n", buf_size);
+ av_dlog(avctx, "frame size %d\n", buf_size);
decode_coding_unit:
if (dnxhd_decode_header(ctx, buf, buf_size, first_field) < 0)
return -1;
+ if ((avctx->width || avctx->height) &&
+ (ctx->width != avctx->width || ctx->height != avctx->height)) {
+ av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %dx%d\n",
+ avctx->width, avctx->height, ctx->width, ctx->height);
+ first_field = 1;
+ }
+
avctx->pix_fmt = PIX_FMT_YUV422P;
- if (avcodec_check_dimensions(avctx, ctx->width, ctx->height))
+ if (av_image_check_size(ctx->width, ctx->height, 0, avctx))
return -1;
avcodec_set_dimensions(avctx, ctx->width, ctx->height);
return buf_size;
}
-static int dnxhd_decode_close(AVCodecContext *avctx)
+static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
{
DNXHDContext *ctx = avctx->priv_data;
return 0;
}
-AVCodec dnxhd_decoder = {
+AVCodec ff_dnxhd_decoder = {
"dnxhd",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_DNXHD,
sizeof(DNXHDContext),
dnxhd_decode_init,
dnxhd_decode_close,
dnxhd_decode_frame,
CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
};