*
* 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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 2.1 of the License, or (at your option) any later version.
*
- * Libav 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 Libav; 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 "dnxhddata.h"
#include "dsputil.h"
#include "internal.h"
+#include "thread.h"
typedef struct DNXHDContext {
AVCodecContext *avctx;
GetBitContext gb;
- int cid; ///< compression id
+ int64_t cid; ///< compression id
unsigned int width, height;
unsigned int mb_width, mb_height;
uint32_t mb_scan_index[68]; /* max for 1080p */
int bit_depth; // 8, 10 or 0 if not initialized at all.
void (*decode_dct_block)(struct DNXHDContext *ctx, int16_t *block,
int n, int qscale);
+ int last_qscale;
+ int luma_scale[64];
+ int chroma_scale[64];
} DNXHDContext;
#define DNXHD_VLC_BITS 9
DNXHDContext *ctx = avctx->priv_data;
ctx->avctx = avctx;
+ ctx->cid = -1;
return 0;
}
-static int dnxhd_init_vlc(DNXHDContext *ctx, int cid)
+static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid)
{
if (cid != ctx->cid) {
int index;
av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %d\n", cid);
return -1;
}
+ if (ff_dnxhd_cid_table[index].bit_depth != ctx->bit_depth) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, ctx->bit_depth);
+ return AVERROR_INVALIDDATA;
+ }
ctx->cid_table = &ff_dnxhd_cid_table[index];
ff_free_vlc(&ctx->ac_vlc);
for (i = 0; i < ctx->mb_height; i++) {
ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i<<2));
av_dlog(ctx->avctx, "mb scan index %d\n", ctx->mb_scan_index[i]);
- if (buf_size < ctx->mb_scan_index[i] + 0x280) {
+ if (buf_size < ctx->mb_scan_index[i] + 0x280LL) {
av_log(ctx->avctx, AV_LOG_ERROR, "invalid mb scan index\n");
return -1;
}
int level_bias,
int level_shift)
{
- int i, j, index1, index2, len;
+ int i, j, index1, index2, len, flags;
int level, component, sign;
+ const int *scale;
const uint8_t *weight_matrix;
+ const uint8_t *ac_level = ctx->cid_table->ac_level;
+ const uint8_t *ac_flags = ctx->cid_table->ac_flags;
+ const int eob_index = ctx->cid_table->eob_index;
OPEN_READER(bs, &ctx->gb);
if (n&2) {
component = 1 + (n&1);
+ scale = ctx->chroma_scale;
weight_matrix = ctx->cid_table->chroma_weight;
} else {
component = 0;
+ scale = ctx->luma_scale;
weight_matrix = ctx->cid_table->luma_weight;
}
}
block[0] = ctx->last_dc[component];
- for (i = 1; ; i++) {
- UPDATE_CACHE(bs, &ctx->gb);
- GET_VLC(index1, bs, &ctx->gb, ctx->ac_vlc.table,
- DNXHD_VLC_BITS, 2);
- level = ctx->cid_table->ac_level[index1];
- if (!level) /* EOB */
- break;
+ i = 0;
+
+ UPDATE_CACHE(bs, &ctx->gb);
+ GET_VLC(index1, bs, &ctx->gb, ctx->ac_vlc.table,
+ DNXHD_VLC_BITS, 2);
+
+ while (index1 != eob_index) {
+ level = ac_level[index1];
+ flags = ac_flags[index1];
sign = SHOW_SBITS(bs, &ctx->gb, 1);
SKIP_BITS(bs, &ctx->gb, 1);
- if (ctx->cid_table->ac_index_flag[index1]) {
- level += SHOW_UBITS(bs, &ctx->gb, index_bits) << 6;
+ if (flags & 1) {
+ level += SHOW_UBITS(bs, &ctx->gb, index_bits) << 7;
SKIP_BITS(bs, &ctx->gb, index_bits);
}
- if (ctx->cid_table->ac_run_flag[index1]) {
+ if (flags & 2) {
UPDATE_CACHE(bs, &ctx->gb);
GET_VLC(index2, bs, &ctx->gb, ctx->run_vlc.table,
DNXHD_VLC_BITS, 2);
i += ctx->cid_table->run[index2];
}
- if (i > 63) {
+ if (++i > 63) {
av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
break;
}
j = ctx->scantable.permutated[i];
- level = (2*level+1) * qscale * weight_matrix[i];
+ level *= scale[i];
if (level_bias < 32 || weight_matrix[i] != level_bias)
level += level_bias;
level >>= level_shift;
block[j] = (level^sign) - sign;
+
+ UPDATE_CACHE(bs, &ctx->gb);
+ GET_VLC(index1, bs, &ctx->gb, ctx->ac_vlc.table,
+ DNXHD_VLC_BITS, 2);
}
CLOSE_READER(bs, &ctx->gb);
qscale = get_bits(&ctx->gb, 11);
skip_bits1(&ctx->gb);
+ if (qscale != ctx->last_qscale) {
+ for (i = 0; i < 64; i++) {
+ ctx->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
+ ctx->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
+ }
+ ctx->last_qscale = qscale;
+ }
+
for (i = 0; i < 8; i++) {
ctx->dsp.clear_block(ctx->blocks[i]);
ctx->decode_dct_block(ctx, ctx->blocks[i], i, qscale);
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
DNXHDContext *ctx = avctx->priv_data;
+ ThreadFrame frame = { .f = data };
AVFrame *picture = data;
int first_field = 1;
int ret;
return ret;
if (first_field) {
- if ((ret = ff_get_buffer(avctx, picture, 0)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
return ret;
- }
picture->pict_type = AV_PICTURE_TYPE_I;
picture->key_frame = 1;
}
}
*got_frame = 1;
- return buf_size;
+ return avpkt->size;
}
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
.init = dnxhd_decode_init,
.close = dnxhd_decode_close,
.decode = dnxhd_decode_frame,
- .capabilities = CODEC_CAP_DR1,
+ .capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
};
projects / ffmpeg / blobdiff