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/* |
67335dbc |
* Copyright (C) 2003-2004 the ffmpeg project |
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* |
b78e7197 |
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
b78e7197 |
* version 2.1 of the License, or (at your option) any later version. |
d86053a4 |
* |
b78e7197 |
* FFmpeg is distributed in the hope that it will be useful, |
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* 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 |
b78e7197 |
* License along with FFmpeg; if not, write to the Free Software |
5509bffa |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/
/** |
ba87f080 |
* @file |
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* On2 VP3 Video Decoder |
0ad72bdd |
*
* VP3 Video Decoder by Mike Melanson (mike at multimedia.cx)
* For more information about the VP3 coding process, visit: |
9db5bdfa |
* http://wiki.multimedia.cx/index.php?title=On2_VP3 |
0ad72bdd |
*
* Theora decoder by Alex Beregszaszi |
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*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
|
7ffe76e5 |
#include "libavutil/imgutils.h" |
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#include "avcodec.h" |
f3a29b75 |
#include "internal.h" |
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#include "dsputil.h" |
9106a698 |
#include "get_bits.h" |
d1293512 |
#include "hpeldsp.h" |
8c53d39e |
#include "videodsp.h" |
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#include "vp3data.h" |
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#include "vp3dsp.h" |
da91ed59 |
#include "xiph.h" |
4a5a1689 |
#include "thread.h" |
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#define FRAGMENT_PIXELS 8
|
7beddb12 |
//FIXME split things out into their own arrays |
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typedef struct Vp3Fragment { |
c72625f2 |
int16_t dc; |
288774bb |
uint8_t coding_method; |
f2264fa5 |
uint8_t qpi; |
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} Vp3Fragment;
#define SB_NOT_CODED 0
#define SB_PARTIALLY_CODED 1
#define SB_FULLY_CODED 2
|
ecb51b25 |
// This is the maximum length of a single long bit run that can be encoded
// for superblock coding or block qps. Theora special-cases this to read a
// bit instead of flipping the current bit to allow for runs longer than 4129.
#define MAXIMUM_LONG_BIT_RUN 4129
|
d86053a4 |
#define MODE_INTER_NO_MV 0
#define MODE_INTRA 1
#define MODE_INTER_PLUS_MV 2
#define MODE_INTER_LAST_MV 3
#define MODE_INTER_PRIOR_LAST 4
#define MODE_USING_GOLDEN 5
#define MODE_GOLDEN_MV 6
#define MODE_INTER_FOURMV 7
#define CODING_MODE_COUNT 8
/* special internal mode */
#define MODE_COPY 8
|
bc15fcb8 |
static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb);
static int theora_decode_tables(AVCodecContext *avctx, GetBitContext *gb);
|
d86053a4 |
/* There are 6 preset schemes, plus a free-form scheme */ |
e8e47435 |
static const int ModeAlphabet[6][CODING_MODE_COUNT] = |
d86053a4 |
{
/* scheme 1: Last motion vector dominates */ |
115329f1 |
{ MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST, |
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MODE_INTER_PLUS_MV, MODE_INTER_NO_MV, |
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MODE_INTRA, MODE_USING_GOLDEN, |
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MODE_GOLDEN_MV, MODE_INTER_FOURMV },
/* scheme 2 */ |
115329f1 |
{ MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST, |
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MODE_INTER_NO_MV, MODE_INTER_PLUS_MV, |
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MODE_INTRA, MODE_USING_GOLDEN, |
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MODE_GOLDEN_MV, MODE_INTER_FOURMV },
/* scheme 3 */ |
115329f1 |
{ MODE_INTER_LAST_MV, MODE_INTER_PLUS_MV, |
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MODE_INTER_PRIOR_LAST, MODE_INTER_NO_MV, |
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MODE_INTRA, MODE_USING_GOLDEN, |
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MODE_GOLDEN_MV, MODE_INTER_FOURMV },
/* scheme 4 */ |
115329f1 |
{ MODE_INTER_LAST_MV, MODE_INTER_PLUS_MV, |
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MODE_INTER_NO_MV, MODE_INTER_PRIOR_LAST, |
115329f1 |
MODE_INTRA, MODE_USING_GOLDEN, |
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MODE_GOLDEN_MV, MODE_INTER_FOURMV },
/* scheme 5: No motion vector dominates */ |
115329f1 |
{ MODE_INTER_NO_MV, MODE_INTER_LAST_MV, |
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MODE_INTER_PRIOR_LAST, MODE_INTER_PLUS_MV, |
115329f1 |
MODE_INTRA, MODE_USING_GOLDEN, |
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MODE_GOLDEN_MV, MODE_INTER_FOURMV },
/* scheme 6 */ |
115329f1 |
{ MODE_INTER_NO_MV, MODE_USING_GOLDEN, |
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MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST, |
115329f1 |
MODE_INTER_PLUS_MV, MODE_INTRA, |
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MODE_GOLDEN_MV, MODE_INTER_FOURMV },
};
|
7a095ea6 |
static const uint8_t hilbert_offset[16][2] = {
{0,0}, {1,0}, {1,1}, {0,1},
{0,2}, {0,3}, {1,3}, {1,2},
{2,2}, {2,3}, {3,3}, {3,2},
{3,1}, {2,1}, {2,0}, {3,0}
};
|
d86053a4 |
#define MIN_DEQUANT_VAL 2
typedef struct Vp3DecodeContext {
AVCodecContext *avctx; |
f44ee2c3 |
int theora, theora_tables; |
3c3f113e |
int version; |
d86053a4 |
int width, height; |
1e76a1da |
int chroma_x_shift, chroma_y_shift; |
759001c5 |
ThreadFrame golden_frame;
ThreadFrame last_frame;
ThreadFrame current_frame; |
d86053a4 |
int keyframe; |
d5efa84f |
uint8_t idct_permutation[64]; |
d85c9b03 |
uint8_t idct_scantable[64]; |
d1293512 |
HpelDSPContext hdsp; |
8c53d39e |
VideoDSPContext vdsp; |
28f9ab70 |
VP3DSPContext vp3dsp; |
88bd7fdc |
DECLARE_ALIGNED(16, int16_t, block)[64]; |
9a7ad925 |
int flipped_image; |
a8de3901 |
int last_slice_end; |
a4501a45 |
int skip_loop_filter; |
d86053a4 |
|
f2264fa5 |
int qps[3];
int nqps;
int last_qps[3]; |
d86053a4 |
int superblock_count; |
892fc83e |
int y_superblock_width;
int y_superblock_height; |
35c28d23 |
int y_superblock_count; |
892fc83e |
int c_superblock_width;
int c_superblock_height; |
35c28d23 |
int c_superblock_count; |
d86053a4 |
int u_superblock_start;
int v_superblock_start;
unsigned char *superblock_coding;
int macroblock_count;
int macroblock_width;
int macroblock_height;
int fragment_count; |
57783884 |
int fragment_width[2];
int fragment_height[2]; |
d86053a4 |
Vp3Fragment *all_fragments; |
1abbf64e |
int fragment_start[3]; |
735acf56 |
int data_offset[3]; |
115329f1 |
|
14268254 |
int8_t (*motion_val[2])[2];
|
f44ee2c3 |
/* tables */
uint16_t coded_dc_scale_factor[64]; |
67335dbc |
uint32_t coded_ac_scale_factor[64]; |
ae1dd8e1 |
uint8_t base_matrix[384][64];
uint8_t qr_count[2][3];
uint8_t qr_size [2][3][64];
uint16_t qr_base[2][3][64]; |
d86053a4 |
|
c72625f2 |
/**
* This is a list of all tokens in bitstream order. Reordering takes place
* by pulling from each level during IDCT. As a consequence, IDCT must be
* in Hilbert order, making the minimum slice height 64 for 4:2:0 and 32
* otherwise. The 32 different tokens with up to 12 bits of extradata are
* collapsed into 3 types, packed as follows:
* (from the low to high bits)
*
* 2 bits: type (0,1,2)
* 0: EOB run, 14 bits for run length (12 needed)
* 1: zero run, 7 bits for run length
* 7 bits for the next coefficient (3 needed)
* 2: coefficient, 14 bits (11 needed)
*
* Coefficients are signed, so are packed in the highest bits for automatic
* sign extension.
*/
int16_t *dct_tokens[3][64];
int16_t *dct_tokens_base;
#define TOKEN_EOB(eob_run) ((eob_run) << 2)
#define TOKEN_ZERO_RUN(coeff, zero_run) (((coeff) << 9) + ((zero_run) << 2) + 1)
#define TOKEN_COEFF(coeff) (((coeff) << 2) + 2)
/**
* number of blocks that contain DCT coefficients at the given level or higher
*/
int num_coded_frags[3][64];
int total_num_coded_frags;
|
f4433de9 |
/* this is a list of indexes into the all_fragments array indicating |
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* which of the fragments are coded */ |
c72625f2 |
int *coded_fragment_list[3]; |
098523eb |
|
d86053a4 |
VLC dc_vlc[16];
VLC ac_vlc_1[16];
VLC ac_vlc_2[16];
VLC ac_vlc_3[16];
VLC ac_vlc_4[16];
|
0ad72bdd |
VLC superblock_run_length_vlc;
VLC fragment_run_length_vlc;
VLC mode_code_vlc;
VLC motion_vector_vlc;
|
38acbc3c |
/* these arrays need to be on 16-byte boundaries since SSE2 operations
* index into them */ |
02494787 |
DECLARE_ALIGNED(16, int16_t, qmat)[3][2][3][64]; ///< qmat[qpi][is_inter][plane] |
d86053a4 |
/* This table contains superblock_count * 16 entries. Each set of 16 |
f4433de9 |
* numbers corresponds to the fragment indexes 0..15 of the superblock. |
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* An entry will be -1 to indicate that no entry corresponds to that
* index. */
int *superblock_fragments;
|
115329f1 |
/* This is an array that indicates how a particular macroblock |
74c0ac12 |
* is coded. */ |
96a7e73b |
unsigned char *macroblock_coding; |
d86053a4 |
|
d1472386 |
uint8_t *edge_emu_buffer; |
39922395 |
|
f44b08a5 |
/* Huffman decode */
int hti;
unsigned int hbits;
int entries;
int huff_code_size; |
8e6daa4a |
uint32_t huffman_table[80][32][2]; |
f44b08a5 |
|
51ace577 |
uint8_t filter_limit_values[64]; |
84dc2d8a |
DECLARE_ALIGNED(8, int, bounding_values_array)[256+2]; |
d86053a4 |
} Vp3DecodeContext;
/************************************************************************
* VP3 specific functions
************************************************************************/
|
bc4d1561 |
static void vp3_decode_flush(AVCodecContext *avctx)
{
Vp3DecodeContext *s = avctx->priv_data;
|
759001c5 |
if (s->golden_frame.f) |
bc4d1561 |
ff_thread_release_buffer(avctx, &s->golden_frame); |
759001c5 |
if (s->last_frame.f) |
bc4d1561 |
ff_thread_release_buffer(avctx, &s->last_frame); |
759001c5 |
if (s->current_frame.f) |
bc4d1561 |
ff_thread_release_buffer(avctx, &s->current_frame);
}
static av_cold int vp3_decode_end(AVCodecContext *avctx)
{
Vp3DecodeContext *s = avctx->priv_data;
int i;
|
ec86ba57 |
av_freep(&s->superblock_coding);
av_freep(&s->all_fragments);
av_freep(&s->coded_fragment_list[0]);
av_freep(&s->dct_tokens_base);
av_freep(&s->superblock_fragments);
av_freep(&s->macroblock_coding);
av_freep(&s->motion_val[0]);
av_freep(&s->motion_val[1]);
av_freep(&s->edge_emu_buffer); |
bc4d1561 |
|
bc15fcb8 |
s->theora_tables = 0;
|
759001c5 |
/* release all frames */
vp3_decode_flush(avctx);
av_frame_free(&s->current_frame.f);
av_frame_free(&s->last_frame.f);
av_frame_free(&s->golden_frame.f);
|
bc4d1561 |
if (avctx->internal->is_copy)
return 0;
for (i = 0; i < 16; i++) { |
e96b4a53 |
ff_free_vlc(&s->dc_vlc[i]);
ff_free_vlc(&s->ac_vlc_1[i]);
ff_free_vlc(&s->ac_vlc_2[i]);
ff_free_vlc(&s->ac_vlc_3[i]);
ff_free_vlc(&s->ac_vlc_4[i]); |
bc4d1561 |
}
|
e96b4a53 |
ff_free_vlc(&s->superblock_run_length_vlc);
ff_free_vlc(&s->fragment_run_length_vlc);
ff_free_vlc(&s->mode_code_vlc);
ff_free_vlc(&s->motion_vector_vlc); |
bc4d1561 |
return 0;
}
|
9ccc349f |
/** |
d86053a4 |
* This function sets up all of the various blocks mappings:
* superblocks <-> fragments, macroblocks <-> fragments,
* superblocks <-> macroblocks |
892fc83e |
* |
49bd8e4b |
* @return 0 is successful; returns 1 if *anything* went wrong. |
d86053a4 |
*/ |
115329f1 |
static int init_block_mapping(Vp3DecodeContext *s) |
d86053a4 |
{ |
a16389c1 |
int sb_x, sb_y, plane;
int x, y, i, j = 0;
for (plane = 0; plane < 3; plane++) {
int sb_width = plane ? s->c_superblock_width : s->y_superblock_width;
int sb_height = plane ? s->c_superblock_height : s->y_superblock_height; |
57783884 |
int frag_width = s->fragment_width[!!plane];
int frag_height = s->fragment_height[!!plane]; |
a16389c1 |
for (sb_y = 0; sb_y < sb_height; sb_y++)
for (sb_x = 0; sb_x < sb_width; sb_x++)
for (i = 0; i < 16; i++) {
x = 4*sb_x + hilbert_offset[i][0];
y = 4*sb_y + hilbert_offset[i][1];
if (x < frag_width && y < frag_height)
s->superblock_fragments[j++] = s->fragment_start[plane] + y*frag_width + x;
else
s->superblock_fragments[j++] = -1;
} |
d86053a4 |
}
|
892fc83e |
return 0; /* successful path out */ |
d86053a4 |
}
/* |
f44b08a5 |
* This function sets up the dequantization tables used for a particular |
d86053a4 |
* frame.
*/ |
f2264fa5 |
static void init_dequantizer(Vp3DecodeContext *s, int qpi) |
d86053a4 |
{ |
f2264fa5 |
int ac_scale_factor = s->coded_ac_scale_factor[s->qps[qpi]];
int dc_scale_factor = s->coded_dc_scale_factor[s->qps[qpi]]; |
36c32bdd |
int i, plane, inter, qri, bmi, bmj, qistart; |
d86053a4 |
|
ae1dd8e1 |
for(inter=0; inter<2; inter++){
for(plane=0; plane<3; plane++){
int sum=0;
for(qri=0; qri<s->qr_count[inter][plane]; qri++){
sum+= s->qr_size[inter][plane][qri]; |
f2264fa5 |
if(s->qps[qpi] <= sum) |
ae1dd8e1 |
break;
}
qistart= sum - s->qr_size[inter][plane][qri];
bmi= s->qr_base[inter][plane][qri ];
bmj= s->qr_base[inter][plane][qri+1];
for(i=0; i<64; i++){ |
f2264fa5 |
int coeff= ( 2*(sum -s->qps[qpi])*s->base_matrix[bmi][i]
- 2*(qistart-s->qps[qpi])*s->base_matrix[bmj][i] |
ae1dd8e1 |
+ s->qr_size[inter][plane][qri])
/ (2*s->qr_size[inter][plane][qri]);
|
a14ab4e4 |
int qmin= 8<<(inter + !i); |
ae1dd8e1 |
int qscale= i ? ac_scale_factor : dc_scale_factor;
|
18df366a |
s->qmat[qpi][inter][plane][s->idct_permutation[i]] =
av_clip((qscale * coeff) / 100 * 4, qmin, 4096); |
ae1dd8e1 |
} |
f2264fa5 |
// all DC coefficients use the same quant so as not to interfere with DC prediction
s->qmat[qpi][inter][plane][0] = s->qmat[0][inter][plane][0]; |
ae1dd8e1 |
} |
d86053a4 |
}
}
/* |
f44b08a5 |
* This function initializes the loop filter boundary limits if the frame's
* quality index is different from the previous frame's. |
7fa5f999 |
*
* The filter_limit_values may not be larger than 127. |
f44b08a5 |
*/
static void init_loop_filter(Vp3DecodeContext *s)
{
int *bounding_values= s->bounding_values_array+127;
int filter_limit;
int x; |
7fa5f999 |
int value; |
f44b08a5 |
|
f2264fa5 |
filter_limit = s->filter_limit_values[s->qps[0]]; |
e9dc6164 |
av_assert0(filter_limit < 128U); |
f44b08a5 |
/* set up the bounding values */
memset(s->bounding_values_array, 0, 256 * sizeof(int));
for (x = 0; x < filter_limit; x++) {
bounding_values[-x] = -x;
bounding_values[x] = x;
} |
7fa5f999 |
for (x = value = filter_limit; x < 128 && value; x++, value--) {
bounding_values[ x] = value;
bounding_values[-x] = -value;
}
if (value)
bounding_values[128] = value; |
357f45d9 |
bounding_values[129] = bounding_values[130] = filter_limit * 0x02020202; |
f44b08a5 |
}
/* |
115329f1 |
* This function unpacks all of the superblock/macroblock/fragment coding |
d86053a4 |
* information from the bitstream.
*/ |
892fc83e |
static int unpack_superblocks(Vp3DecodeContext *s, GetBitContext *gb) |
d86053a4 |
{ |
e2720b6b |
int superblock_starts[3] = { 0, s->u_superblock_start, s->v_superblock_start }; |
d86053a4 |
int bit = 0;
int current_superblock = 0;
int current_run = 0; |
855c720c |
int num_partial_superblocks = 0; |
d86053a4 |
int i, j;
int current_fragment; |
35c28d23 |
int plane; |
d86053a4 |
if (s->keyframe) {
memset(s->superblock_coding, SB_FULLY_CODED, s->superblock_count);
} else {
/* unpack the list of partially-coded superblocks */ |
cc46005f |
bit = get_bits1(gb) ^ 1;
current_run = 0;
|
60867312 |
while (current_superblock < s->superblock_count && get_bits_left(gb) > 0) { |
cc46005f |
if (s->theora && current_run == MAXIMUM_LONG_BIT_RUN)
bit = get_bits1(gb);
else
bit ^= 1;
|
115329f1 |
current_run = get_vlc2(gb, |
33dbc1b7 |
s->superblock_run_length_vlc.table, 6, 2) + 1;
if (current_run == 34) |
d8278bab |
current_run += get_bits(gb, 12); |
d86053a4 |
|
33dbc1b7 |
if (current_superblock + current_run > s->superblock_count) {
av_log(s->avctx, AV_LOG_ERROR, "Invalid partially coded superblock run length\n");
return -1;
}
memset(s->superblock_coding + current_superblock, bit, current_run);
current_superblock += current_run; |
855c720c |
if (bit)
num_partial_superblocks += current_run; |
d86053a4 |
}
/* unpack the list of fully coded superblocks if any of the blocks were
* not marked as partially coded in the previous step */ |
855c720c |
if (num_partial_superblocks < s->superblock_count) {
int superblocks_decoded = 0; |
d86053a4 |
current_superblock = 0; |
cc46005f |
bit = get_bits1(gb) ^ 1;
current_run = 0;
|
60867312 |
while (superblocks_decoded < s->superblock_count - num_partial_superblocks
&& get_bits_left(gb) > 0) { |
cc46005f |
if (s->theora && current_run == MAXIMUM_LONG_BIT_RUN)
bit = get_bits1(gb);
else
bit ^= 1;
|
115329f1 |
current_run = get_vlc2(gb, |
855c720c |
s->superblock_run_length_vlc.table, 6, 2) + 1;
if (current_run == 34) |
d8278bab |
current_run += get_bits(gb, 12); |
855c720c |
for (j = 0; j < current_run; current_superblock++) {
if (current_superblock >= s->superblock_count) {
av_log(s->avctx, AV_LOG_ERROR, "Invalid fully coded superblock run length\n");
return -1; |
d86053a4 |
} |
855c720c |
/* skip any superblocks already marked as partially coded */
if (s->superblock_coding[current_superblock] == SB_NOT_CODED) { |
b5da3635 |
s->superblock_coding[current_superblock] = 2*bit; |
855c720c |
j++;
} |
d86053a4 |
} |
855c720c |
superblocks_decoded += current_run; |
d86053a4 |
}
}
/* if there were partial blocks, initialize bitstream for
* unpacking fragment codings */ |
855c720c |
if (num_partial_superblocks) { |
d86053a4 |
current_run = 0; |
5fc32c27 |
bit = get_bits1(gb); |
115329f1 |
/* toggle the bit because as soon as the first run length is |
d86053a4 |
* fetched the bit will be toggled again */
bit ^= 1;
}
}
/* figure out which fragments are coded; iterate through each
* superblock (all planes) */ |
c72625f2 |
s->total_num_coded_frags = 0; |
96a7e73b |
memset(s->macroblock_coding, MODE_COPY, s->macroblock_count); |
35c28d23 |
for (plane = 0; plane < 3; plane++) { |
e2720b6b |
int sb_start = superblock_starts[plane]; |
35c28d23 |
int sb_end = sb_start + (plane ? s->c_superblock_count : s->y_superblock_count); |
c72625f2 |
int num_coded_frags = 0; |
35c28d23 |
|
60867312 |
for (i = sb_start; i < sb_end && get_bits_left(gb) > 0; i++) { |
d86053a4 |
/* iterate through all 16 fragments in a superblock */
for (j = 0; j < 16; j++) {
/* if the fragment is in bounds, check its coding status */
current_fragment = s->superblock_fragments[i * 16 + j];
if (current_fragment != -1) { |
6cb35b45 |
int coded = s->superblock_coding[i]; |
d86053a4 |
|
6cb35b45 |
if (s->superblock_coding[i] == SB_PARTIALLY_CODED) { |
d86053a4 |
/* fragment may or may not be coded; this is the case
* that cares about the fragment coding runs */ |
b5da3635 |
if (current_run-- == 0) { |
d86053a4 |
bit ^= 1; |
115329f1 |
current_run = get_vlc2(gb, |
b5da3635 |
s->fragment_run_length_vlc.table, 5, 2); |
d86053a4 |
} |
6cb35b45 |
coded = bit;
} |
d86053a4 |
|
6cb35b45 |
if (coded) { |
115329f1 |
/* default mode; actual mode will be decoded in |
22493ab9 |
* the next phase */ |
115329f1 |
s->all_fragments[current_fragment].coding_method = |
d86053a4 |
MODE_INTER_NO_MV; |
c72625f2 |
s->coded_fragment_list[plane][num_coded_frags++] = |
d86053a4 |
current_fragment;
} else {
/* not coded; copy this fragment from the prior frame */
s->all_fragments[current_fragment].coding_method =
MODE_COPY;
}
}
}
} |
c72625f2 |
s->total_num_coded_frags += num_coded_frags;
for (i = 0; i < 64; i++)
s->num_coded_frags[plane][i] = num_coded_frags;
if (plane < 2)
s->coded_fragment_list[plane+1] = s->coded_fragment_list[plane] + num_coded_frags; |
35c28d23 |
} |
892fc83e |
return 0; |
d86053a4 |
}
/*
* This function unpacks all the coding mode data for individual macroblocks
* from the bitstream.
*/ |
892fc83e |
static int unpack_modes(Vp3DecodeContext *s, GetBitContext *gb) |
d86053a4 |
{ |
19cd517d |
int i, j, k, sb_x, sb_y; |
d86053a4 |
int scheme;
int current_macroblock;
int current_fragment;
int coding_mode; |
e8e47435 |
int custom_mode_alphabet[CODING_MODE_COUNT]; |
7c2e31d1 |
const int *alphabet; |
1e76a1da |
Vp3Fragment *frag; |
d86053a4 |
if (s->keyframe) {
for (i = 0; i < s->fragment_count; i++)
s->all_fragments[i].coding_method = MODE_INTRA;
} else {
/* fetch the mode coding scheme for this frame */
scheme = get_bits(gb, 3);
/* is it a custom coding scheme? */
if (scheme == 0) {
for (i = 0; i < 8; i++) |
2c823b3c |
custom_mode_alphabet[i] = MODE_INTER_NO_MV;
for (i = 0; i < 8; i++) |
e8e47435 |
custom_mode_alphabet[get_bits(gb, 3)] = i; |
7c2e31d1 |
alphabet = custom_mode_alphabet;
} else
alphabet = ModeAlphabet[scheme-1]; |
d86053a4 |
/* iterate through all of the macroblocks that contain 1 or more
* coded fragments */ |
19cd517d |
for (sb_y = 0; sb_y < s->y_superblock_height; sb_y++) {
for (sb_x = 0; sb_x < s->y_superblock_width; sb_x++) { |
60867312 |
if (get_bits_left(gb) <= 0)
return -1; |
d86053a4 |
for (j = 0; j < 4; j++) { |
19cd517d |
int mb_x = 2*sb_x + (j>>1);
int mb_y = 2*sb_y + (((j>>1)+j)&1);
current_macroblock = mb_y * s->macroblock_width + mb_x;
|
15675ce6 |
if (mb_x >= s->macroblock_width || mb_y >= s->macroblock_height) |
d86053a4 |
continue;
|
ea676144 |
#define BLOCK_X (2*mb_x + (k&1))
#define BLOCK_Y (2*mb_y + (k>>1)) |
15675ce6 |
/* coding modes are only stored if the macroblock has at least one
* luma block coded, otherwise it must be INTER_NO_MV */
for (k = 0; k < 4; k++) { |
57783884 |
current_fragment = BLOCK_Y*s->fragment_width[0] + BLOCK_X; |
15675ce6 |
if (s->all_fragments[current_fragment].coding_method != MODE_COPY)
break;
}
if (k == 4) {
s->macroblock_coding[current_macroblock] = MODE_INTER_NO_MV;
continue;
} |
ea676144 |
|
d86053a4 |
/* mode 7 means get 3 bits for each coding mode */
if (scheme == 7)
coding_mode = get_bits(gb, 3);
else |
7c2e31d1 |
coding_mode = alphabet |
0ad72bdd |
[get_vlc2(gb, s->mode_code_vlc.table, 3, 3)]; |
d86053a4 |
|
96a7e73b |
s->macroblock_coding[current_macroblock] = coding_mode; |
ea676144 |
for (k = 0; k < 4; k++) { |
1e76a1da |
frag = s->all_fragments + BLOCK_Y*s->fragment_width[0] + BLOCK_X;
if (frag->coding_method != MODE_COPY)
frag->coding_method = coding_mode; |
ea676144 |
} |
1e76a1da |
#define SET_CHROMA_MODES \
if (frag[s->fragment_start[1]].coding_method != MODE_COPY) \
frag[s->fragment_start[1]].coding_method = coding_mode;\
if (frag[s->fragment_start[2]].coding_method != MODE_COPY) \
frag[s->fragment_start[2]].coding_method = coding_mode;
if (s->chroma_y_shift) {
frag = s->all_fragments + mb_y*s->fragment_width[1] + mb_x;
SET_CHROMA_MODES
} else if (s->chroma_x_shift) {
frag = s->all_fragments + 2*mb_y*s->fragment_width[1] + mb_x;
for (k = 0; k < 2; k++) {
SET_CHROMA_MODES
frag += s->fragment_width[1];
}
} else {
for (k = 0; k < 4; k++) {
frag = s->all_fragments + BLOCK_Y*s->fragment_width[1] + BLOCK_X;
SET_CHROMA_MODES
} |
d86053a4 |
}
} |
19cd517d |
} |
d86053a4 |
}
} |
892fc83e |
return 0; |
44ae98dd |
}
/* |
d86053a4 |
* This function unpacks all the motion vectors for the individual
* macroblocks from the bitstream.
*/ |
892fc83e |
static int unpack_vectors(Vp3DecodeContext *s, GetBitContext *gb) |
d86053a4 |
{ |
eb691ef2 |
int j, k, sb_x, sb_y; |
d86053a4 |
int coding_mode; |
1c183aa4 |
int motion_x[4];
int motion_y[4]; |
d86053a4 |
int last_motion_x = 0;
int last_motion_y = 0;
int prior_last_motion_x = 0;
int prior_last_motion_y = 0;
int current_macroblock;
int current_fragment; |
14268254 |
int frag; |
d86053a4 |
|
6599e2a7 |
if (s->keyframe) |
6298f49f |
return 0; |
10f38380 |
|
1ae4518d |
/* coding mode 0 is the VLC scheme; 1 is the fixed code scheme */
coding_mode = get_bits1(gb); |
d86053a4 |
|
1ae4518d |
/* iterate through all of the macroblocks that contain 1 or more
* coded fragments */ |
19cd517d |
for (sb_y = 0; sb_y < s->y_superblock_height; sb_y++) {
for (sb_x = 0; sb_x < s->y_superblock_width; sb_x++) { |
60867312 |
if (get_bits_left(gb) <= 0)
return -1; |
d86053a4 |
|
1ae4518d |
for (j = 0; j < 4; j++) { |
19cd517d |
int mb_x = 2*sb_x + (j>>1);
int mb_y = 2*sb_y + (((j>>1)+j)&1);
current_macroblock = mb_y * s->macroblock_width + mb_x;
if (mb_x >= s->macroblock_width || mb_y >= s->macroblock_height || |
1ae4518d |
(s->macroblock_coding[current_macroblock] == MODE_COPY))
continue; |
d86053a4 |
|
1ae4518d |
switch (s->macroblock_coding[current_macroblock]) {
case MODE_INTER_PLUS_MV:
case MODE_GOLDEN_MV:
/* all 6 fragments use the same motion vector */
if (coding_mode == 0) {
motion_x[0] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
motion_y[0] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
} else {
motion_x[0] = fixed_motion_vector_table[get_bits(gb, 6)];
motion_y[0] = fixed_motion_vector_table[get_bits(gb, 6)]; |
892fc83e |
} |
7f9926a4 |
|
1ae4518d |
/* vector maintenance, only on MODE_INTER_PLUS_MV */
if (s->macroblock_coding[current_macroblock] ==
MODE_INTER_PLUS_MV) { |
e32e2d56 |
prior_last_motion_x = last_motion_x;
prior_last_motion_y = last_motion_y; |
1ae4518d |
last_motion_x = motion_x[0];
last_motion_y = motion_y[0];
}
break;
case MODE_INTER_FOURMV:
/* vector maintenance */
prior_last_motion_x = last_motion_x;
prior_last_motion_y = last_motion_y;
/* fetch 4 vectors from the bitstream, one for each
* Y fragment, then average for the C fragment vectors */
for (k = 0; k < 4; k++) { |
57783884 |
current_fragment = BLOCK_Y*s->fragment_width[0] + BLOCK_X; |
eb691ef2 |
if (s->all_fragments[current_fragment].coding_method != MODE_COPY) { |
1ae4518d |
if (coding_mode == 0) {
motion_x[k] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
motion_y[k] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)]; |
feaf1a73 |
} else { |
1ae4518d |
motion_x[k] = fixed_motion_vector_table[get_bits(gb, 6)];
motion_y[k] = fixed_motion_vector_table[get_bits(gb, 6)]; |
feaf1a73 |
} |
1ae4518d |
last_motion_x = motion_x[k];
last_motion_y = motion_y[k];
} else {
motion_x[k] = 0;
motion_y[k] = 0; |
d86053a4 |
} |
1ae4518d |
}
break;
case MODE_INTER_LAST_MV:
/* all 6 fragments use the last motion vector */
motion_x[0] = last_motion_x;
motion_y[0] = last_motion_y; |
d86053a4 |
|
1ae4518d |
/* no vector maintenance (last vector remains the
* last vector) */
break;
case MODE_INTER_PRIOR_LAST:
/* all 6 fragments use the motion vector prior to the
* last motion vector */
motion_x[0] = prior_last_motion_x;
motion_y[0] = prior_last_motion_y; |
d86053a4 |
|
1ae4518d |
/* vector maintenance */
prior_last_motion_x = last_motion_x;
prior_last_motion_y = last_motion_y;
last_motion_x = motion_x[0];
last_motion_y = motion_y[0];
break; |
44ae98dd |
|
1ae4518d |
default:
/* covers intra, inter without MV, golden without MV */ |
e6e32bdc |
motion_x[0] = 0;
motion_y[0] = 0; |
44ae98dd |
|
1ae4518d |
/* no vector maintenance */
break;
} |
d86053a4 |
|
1ae4518d |
/* assign the motion vectors to the correct fragments */ |
ea676144 |
for (k = 0; k < 4; k++) { |
1ae4518d |
current_fragment = |
57783884 |
BLOCK_Y*s->fragment_width[0] + BLOCK_X; |
e6e32bdc |
if (s->macroblock_coding[current_macroblock] == MODE_INTER_FOURMV) { |
14268254 |
s->motion_val[0][current_fragment][0] = motion_x[k];
s->motion_val[0][current_fragment][1] = motion_y[k]; |
e6e32bdc |
} else { |
14268254 |
s->motion_val[0][current_fragment][0] = motion_x[0];
s->motion_val[0][current_fragment][1] = motion_y[0]; |
e6e32bdc |
} |
d86053a4 |
} |
1e76a1da |
if (s->chroma_y_shift) { |
1c183aa4 |
if (s->macroblock_coding[current_macroblock] == MODE_INTER_FOURMV) {
motion_x[0] = RSHIFT(motion_x[0] + motion_x[1] + motion_x[2] + motion_x[3], 2);
motion_y[0] = RSHIFT(motion_y[0] + motion_y[1] + motion_y[2] + motion_y[3], 2);
} |
1e76a1da |
motion_x[0] = (motion_x[0]>>1) | (motion_x[0]&1);
motion_y[0] = (motion_y[0]>>1) | (motion_y[0]&1); |
14268254 |
frag = mb_y*s->fragment_width[1] + mb_x;
s->motion_val[1][frag][0] = motion_x[0];
s->motion_val[1][frag][1] = motion_y[0]; |
1e76a1da |
} else if (s->chroma_x_shift) {
if (s->macroblock_coding[current_macroblock] == MODE_INTER_FOURMV) {
motion_x[0] = RSHIFT(motion_x[0] + motion_x[1], 1);
motion_y[0] = RSHIFT(motion_y[0] + motion_y[1], 1);
motion_x[1] = RSHIFT(motion_x[2] + motion_x[3], 1);
motion_y[1] = RSHIFT(motion_y[2] + motion_y[3], 1);
} else {
motion_x[1] = motion_x[0];
motion_y[1] = motion_y[0];
}
motion_x[0] = (motion_x[0]>>1) | (motion_x[0]&1);
motion_x[1] = (motion_x[1]>>1) | (motion_x[1]&1);
|
14268254 |
frag = 2*mb_y*s->fragment_width[1] + mb_x; |
1e76a1da |
for (k = 0; k < 2; k++) { |
14268254 |
s->motion_val[1][frag][0] = motion_x[k];
s->motion_val[1][frag][1] = motion_y[k]; |
1e76a1da |
frag += s->fragment_width[1];
}
} else {
for (k = 0; k < 4; k++) { |
14268254 |
frag = BLOCK_Y*s->fragment_width[1] + BLOCK_X; |
1e76a1da |
if (s->macroblock_coding[current_macroblock] == MODE_INTER_FOURMV) { |
14268254 |
s->motion_val[1][frag][0] = motion_x[k];
s->motion_val[1][frag][1] = motion_y[k]; |
1e76a1da |
} else { |
14268254 |
s->motion_val[1][frag][0] = motion_x[0];
s->motion_val[1][frag][1] = motion_y[0]; |
1e76a1da |
}
} |
ea676144 |
} |
d86053a4 |
} |
19cd517d |
} |
1ae4518d |
} |
892fc83e |
return 0; |
d86053a4 |
}
|
f2264fa5 |
static int unpack_block_qpis(Vp3DecodeContext *s, GetBitContext *gb)
{
int qpi, i, j, bit, run_length, blocks_decoded, num_blocks_at_qpi; |
c72625f2 |
int num_blocks = s->total_num_coded_frags; |
f2264fa5 |
for (qpi = 0; qpi < s->nqps-1 && num_blocks > 0; qpi++) {
i = blocks_decoded = num_blocks_at_qpi = 0;
|
cc46005f |
bit = get_bits1(gb) ^ 1;
run_length = 0; |
f2264fa5 |
do { |
cc46005f |
if (run_length == MAXIMUM_LONG_BIT_RUN)
bit = get_bits1(gb);
else
bit ^= 1;
|
f2264fa5 |
run_length = get_vlc2(gb, s->superblock_run_length_vlc.table, 6, 2) + 1;
if (run_length == 34)
run_length += get_bits(gb, 12);
blocks_decoded += run_length;
if (!bit)
num_blocks_at_qpi += run_length;
for (j = 0; j < run_length; i++) { |
c72625f2 |
if (i >= s->total_num_coded_frags) |
f2264fa5 |
return -1;
|
c72625f2 |
if (s->all_fragments[s->coded_fragment_list[0][i]].qpi == qpi) {
s->all_fragments[s->coded_fragment_list[0][i]].qpi += bit; |
f2264fa5 |
j++;
}
} |
60867312 |
} while (blocks_decoded < num_blocks && get_bits_left(gb) > 0); |
f2264fa5 |
num_blocks -= num_blocks_at_qpi;
}
return 0;
}
|
115329f1 |
/* |
d86053a4 |
* This function is called by unpack_dct_coeffs() to extract the VLCs from
* the bitstream. The VLCs encode tokens which are used to unpack DCT
* data. This function unpacks all the VLCs for either the Y plane or both
* C planes, and is called for DC coefficients or different AC coefficient
* levels (since different coefficient types require different VLC tables.
*
* This function returns a residual eob run. E.g, if a particular token gave
* instructions to EOB the next 5 fragments and there were only 2 fragments
* left in the current fragment range, 3 would be returned so that it could
* be passed into the next call to this same function.
*/
static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
VLC *table, int coeff_index, |
c72625f2 |
int plane, |
d86053a4 |
int eob_run)
{ |
c72625f2 |
int i, j = 0; |
d86053a4 |
int token; |
d3076955 |
int zero_run = 0; |
88bd7fdc |
int16_t coeff = 0; |
d3076955 |
int bits_to_get; |
c72625f2 |
int blocks_ended;
int coeff_i = 0;
int num_coeffs = s->num_coded_frags[plane][coeff_index];
int16_t *dct_tokens = s->dct_tokens[plane][coeff_index]; |
d86053a4 |
|
ee3d7f58 |
/* local references to structure members to avoid repeated deferences */ |
c72625f2 |
int *coded_fragment_list = s->coded_fragment_list[plane]; |
ee3d7f58 |
Vp3Fragment *all_fragments = s->all_fragments;
VLC_TYPE (*vlc_table)[2] = table->table;
|
c72625f2 |
if (num_coeffs < 0)
av_log(s->avctx, AV_LOG_ERROR, "Invalid number of coefficents at level %d\n", coeff_index);
if (eob_run > num_coeffs) {
coeff_i = blocks_ended = num_coeffs;
eob_run -= num_coeffs; |
098523eb |
} else { |
c72625f2 |
coeff_i = blocks_ended = eob_run;
eob_run = 0; |
74c0ac12 |
}
|
c72625f2 |
// insert fake EOB token to cover the split between planes or zzi
if (blocks_ended)
dct_tokens[j++] = blocks_ended << 2; |
d86053a4 |
|
f50dafa8 |
while (coeff_i < num_coeffs && get_bits_left(gb) > 0) { |
d86053a4 |
/* decode a VLC into a token */ |
8e6daa4a |
token = get_vlc2(gb, vlc_table, 11, 3); |
d86053a4 |
/* use the token to get a zero run, a coefficient, and an eob run */ |
8370e426 |
if ((unsigned) token <= 6U) { |
d3076955 |
eob_run = eob_run_base[token];
if (eob_run_get_bits[token])
eob_run += get_bits(gb, eob_run_get_bits[token]); |
c72625f2 |
// record only the number of blocks ended in this plane,
// any spill will be recorded in the next plane.
if (eob_run > num_coeffs - coeff_i) {
dct_tokens[j++] = TOKEN_EOB(num_coeffs - coeff_i);
blocks_ended += num_coeffs - coeff_i;
eob_run -= num_coeffs - coeff_i;
coeff_i = num_coeffs;
} else {
dct_tokens[j++] = TOKEN_EOB(eob_run);
blocks_ended += eob_run;
coeff_i += eob_run;
eob_run = 0;
} |
8370e426 |
} else if (token >= 0) { |
d3076955 |
bits_to_get = coeff_get_bits[token]; |
428984b0 |
if (bits_to_get)
bits_to_get = get_bits(gb, bits_to_get);
coeff = coeff_tables[token][bits_to_get]; |
d3076955 |
zero_run = zero_run_base[token];
if (zero_run_get_bits[token])
zero_run += get_bits(gb, zero_run_get_bits[token]); |
d86053a4 |
|
c72625f2 |
if (zero_run) {
dct_tokens[j++] = TOKEN_ZERO_RUN(coeff, zero_run);
} else {
// Save DC into the fragment structure. DC prediction is
// done in raster order, so the actual DC can't be in with
// other tokens. We still need the token in dct_tokens[]
// however, or else the structure collapses on itself.
if (!coeff_index)
all_fragments[coded_fragment_list[coeff_i]].dc = coeff;
dct_tokens[j++] = TOKEN_COEFF(coeff);
}
if (coeff_index + zero_run > 64) { |
01f9640b |
av_log(s->avctx, AV_LOG_DEBUG, "Invalid zero run of %d with" |
c72625f2 |
" %d coeffs left\n", zero_run, 64-coeff_index);
zero_run = 64 - coeff_index;
} |
098523eb |
|
c72625f2 |
// zero runs code multiple coefficients,
// so don't try to decode coeffs for those higher levels
for (i = coeff_index+1; i <= coeff_index+zero_run; i++)
s->num_coded_frags[plane][i]--;
coeff_i++; |
8370e426 |
} else {
av_log(s->avctx, AV_LOG_ERROR,
"Invalid token %d\n", token);
return -1; |
c72625f2 |
} |
d86053a4 |
}
|
c72625f2 |
if (blocks_ended > s->num_coded_frags[plane][coeff_index])
av_log(s->avctx, AV_LOG_ERROR, "More blocks ended than coded!\n");
// decrement the number of blocks that have higher coeffecients for each
// EOB run at this level
if (blocks_ended)
for (i = coeff_index+1; i < 64; i++)
s->num_coded_frags[plane][i] -= blocks_ended;
// setup the next buffer
if (plane < 2)
s->dct_tokens[plane+1][coeff_index] = dct_tokens + j;
else if (coeff_index < 63)
s->dct_tokens[0][coeff_index+1] = dct_tokens + j;
|
d86053a4 |
return eob_run;
}
|
138fe832 |
static void reverse_dc_prediction(Vp3DecodeContext *s,
int first_fragment,
int fragment_width,
int fragment_height); |
d86053a4 |
/*
* This function unpacks all of the DCT coefficient data from the
* bitstream.
*/ |
892fc83e |
static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb) |
d86053a4 |
{
int i;
int dc_y_table;
int dc_c_table;
int ac_y_table;
int ac_c_table;
int residual_eob_run = 0; |
9d8bb031 |
VLC *y_tables[64];
VLC *c_tables[64]; |
d86053a4 |
|
c72625f2 |
s->dct_tokens[0][0] = s->dct_tokens_base;
|
f4433de9 |
/* fetch the DC table indexes */ |
d86053a4 |
dc_y_table = get_bits(gb, 4);
dc_c_table = get_bits(gb, 4);
/* unpack the Y plane DC coefficients */ |
115329f1 |
residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_y_table], 0, |
c72625f2 |
0, residual_eob_run); |
8370e426 |
if (residual_eob_run < 0)
return residual_eob_run; |
d86053a4 |
|
138fe832 |
/* reverse prediction of the Y-plane DC coefficients */ |
57783884 |
reverse_dc_prediction(s, 0, s->fragment_width[0], s->fragment_height[0]); |
138fe832 |
|
d86053a4 |
/* unpack the C plane DC coefficients */
residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0, |
c72625f2 |
1, residual_eob_run); |
8370e426 |
if (residual_eob_run < 0)
return residual_eob_run; |
c72625f2 |
residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0,
2, residual_eob_run); |
8370e426 |
if (residual_eob_run < 0)
return residual_eob_run; |
d86053a4 |
|
138fe832 |
/* reverse prediction of the C-plane DC coefficients */
if (!(s->avctx->flags & CODEC_FLAG_GRAY))
{
reverse_dc_prediction(s, s->fragment_start[1], |
57783884 |
s->fragment_width[1], s->fragment_height[1]); |
138fe832 |
reverse_dc_prediction(s, s->fragment_start[2], |
57783884 |
s->fragment_width[1], s->fragment_height[1]); |
138fe832 |
}
|
f4433de9 |
/* fetch the AC table indexes */ |
d86053a4 |
ac_y_table = get_bits(gb, 4);
ac_c_table = get_bits(gb, 4);
|
9d8bb031 |
/* build tables of AC VLC tables */ |
d86053a4 |
for (i = 1; i <= 5; i++) { |
9d8bb031 |
y_tables[i] = &s->ac_vlc_1[ac_y_table];
c_tables[i] = &s->ac_vlc_1[ac_c_table]; |
d86053a4 |
}
for (i = 6; i <= 14; i++) { |
9d8bb031 |
y_tables[i] = &s->ac_vlc_2[ac_y_table];
c_tables[i] = &s->ac_vlc_2[ac_c_table]; |
d86053a4 |
}
for (i = 15; i <= 27; i++) { |
9d8bb031 |
y_tables[i] = &s->ac_vlc_3[ac_y_table];
c_tables[i] = &s->ac_vlc_3[ac_c_table]; |
d86053a4 |
}
for (i = 28; i <= 63; i++) { |
9d8bb031 |
y_tables[i] = &s->ac_vlc_4[ac_y_table];
c_tables[i] = &s->ac_vlc_4[ac_c_table];
}
/* decode all AC coefficents */
for (i = 1; i <= 63; i++) {
residual_eob_run = unpack_vlcs(s, gb, y_tables[i], i, |
c72625f2 |
0, residual_eob_run); |
8370e426 |
if (residual_eob_run < 0)
return residual_eob_run; |
d86053a4 |
|
9d8bb031 |
residual_eob_run = unpack_vlcs(s, gb, c_tables[i], i, |
c72625f2 |
1, residual_eob_run); |
8370e426 |
if (residual_eob_run < 0)
return residual_eob_run; |
c72625f2 |
residual_eob_run = unpack_vlcs(s, gb, c_tables[i], i,
2, residual_eob_run); |
8370e426 |
if (residual_eob_run < 0)
return residual_eob_run; |
d86053a4 |
} |
892fc83e |
return 0; |
d86053a4 |
}
/*
* This function reverses the DC prediction for each coded fragment in |
115329f1 |
* the frame. Much of this function is adapted directly from the original |
d86053a4 |
* VP3 source code.
*/
#define COMPATIBLE_FRAME(x) \
(compatible_frame[s->all_fragments[x].coding_method] == current_frame_type) |
c72625f2 |
#define DC_COEFF(u) s->all_fragments[u].dc |
d86053a4 |
static void reverse_dc_prediction(Vp3DecodeContext *s,
int first_fragment,
int fragment_width, |
115329f1 |
int fragment_height) |
d86053a4 |
{
#define PUL 8
#define PU 4
#define PUR 2
#define PL 1
int x, y;
int i = first_fragment;
|
59ef342b |
int predicted_dc; |
d86053a4 |
/* DC values for the left, up-left, up, and up-right fragments */
int vl, vul, vu, vur;
|
f4433de9 |
/* indexes for the left, up-left, up, and up-right fragments */ |
d86053a4 |
int l, ul, u, ur;
|
115329f1 |
/* |
d86053a4 |
* The 6 fields mean:
* 0: up-left multiplier
* 1: up multiplier
* 2: up-right multiplier
* 3: left multiplier
*/ |
bb991087 |
static const int predictor_transform[16][4] = { |
006ff1ca |
{ 0, 0, 0, 0},
{ 0, 0, 0,128}, // PL
{ 0, 0,128, 0}, // PUR
{ 0, 0, 53, 75}, // PUR|PL
{ 0,128, 0, 0}, // PU
{ 0, 64, 0, 64}, // PU|PL
{ 0,128, 0, 0}, // PU|PUR
{ 0, 0, 53, 75}, // PU|PUR|PL
{128, 0, 0, 0}, // PUL
{ 0, 0, 0,128}, // PUL|PL
{ 64, 0, 64, 0}, // PUL|PUR
{ 0, 0, 53, 75}, // PUL|PUR|PL
{ 0,128, 0, 0}, // PUL|PU
{-104,116, 0,116}, // PUL|PU|PL
{ 24, 80, 24, 0}, // PUL|PU|PUR
{-104,116, 0,116} // PUL|PU|PUR|PL |
d86053a4 |
};
/* This table shows which types of blocks can use other blocks for
* prediction. For example, INTRA is the only mode in this table to
* have a frame number of 0. That means INTRA blocks can only predict |
115329f1 |
* from other INTRA blocks. There are 2 golden frame coding types; |
d86053a4 |
* blocks encoding in these modes can only predict from other blocks
* that were encoded with these 1 of these 2 modes. */ |
50ba3fd7 |
static const unsigned char compatible_frame[9] = { |
d86053a4 |
1, /* MODE_INTER_NO_MV */
0, /* MODE_INTRA */
1, /* MODE_INTER_PLUS_MV */
1, /* MODE_INTER_LAST_MV */
1, /* MODE_INTER_PRIOR_MV */
2, /* MODE_USING_GOLDEN */
2, /* MODE_GOLDEN_MV */ |
50ba3fd7 |
1, /* MODE_INTER_FOUR_MV */
3 /* MODE_COPY */ |
d86053a4 |
};
int current_frame_type;
/* there is a last DC predictor for each of the 3 frame types */
short last_dc[3];
int transform = 0;
vul = vu = vur = vl = 0;
last_dc[0] = last_dc[1] = last_dc[2] = 0;
/* for each fragment row... */
for (y = 0; y < fragment_height; y++) {
/* for each fragment in a row... */
for (x = 0; x < fragment_width; x++, i++) {
/* reverse prediction if this block was coded */
if (s->all_fragments[i].coding_method != MODE_COPY) {
|
115329f1 |
current_frame_type = |
d86053a4 |
compatible_frame[s->all_fragments[i].coding_method];
|
f72f8a77 |
transform= 0;
if(x){
l= i-1; |
7beddb12 |
vl = DC_COEFF(l); |
50ba3fd7 |
if(COMPATIBLE_FRAME(l)) |
006ff1ca |
transform |= PL; |
f72f8a77 |
}
if(y){
u= i-fragment_width; |
7beddb12 |
vu = DC_COEFF(u); |
50ba3fd7 |
if(COMPATIBLE_FRAME(u)) |
006ff1ca |
transform |= PU; |
f72f8a77 |
if(x){
ul= i-fragment_width-1;
vul = DC_COEFF(ul); |
50ba3fd7 |
if(COMPATIBLE_FRAME(ul)) |
006ff1ca |
transform |= PUL; |
f72f8a77 |
}
if(x + 1 < fragment_width){
ur= i-fragment_width+1;
vur = DC_COEFF(ur); |
50ba3fd7 |
if(COMPATIBLE_FRAME(ur)) |
006ff1ca |
transform |= PUR; |
f72f8a77 |
} |
d86053a4 |
}
if (transform == 0) {
/* if there were no fragments to predict from, use last
* DC saved */ |
7beddb12 |
predicted_dc = last_dc[current_frame_type]; |
d86053a4 |
} else {
/* apply the appropriate predictor transform */
predicted_dc =
(predictor_transform[transform][0] * vul) +
(predictor_transform[transform][1] * vu) +
(predictor_transform[transform][2] * vur) +
(predictor_transform[transform][3] * vl);
|
684d9e36 |
predicted_dc /= 128; |
d86053a4 |
/* check for outranging on the [ul u l] and
* [ul u ur l] predictors */ |
c11cb375 |
if ((transform == 15) || (transform == 13)) { |
c26abfa5 |
if (FFABS(predicted_dc - vu) > 128) |
d86053a4 |
predicted_dc = vu; |
c26abfa5 |
else if (FFABS(predicted_dc - vl) > 128) |
d86053a4 |
predicted_dc = vl; |
c26abfa5 |
else if (FFABS(predicted_dc - vul) > 128) |
d86053a4 |
predicted_dc = vul;
}
}
|
7beddb12 |
/* at long last, apply the predictor */ |
c72625f2 |
DC_COEFF(i) += predicted_dc; |
d86053a4 |
/* save the DC */ |
7beddb12 |
last_dc[current_frame_type] = DC_COEFF(i); |
d86053a4 |
}
}
}
}
|
256c0662 |
static void apply_loop_filter(Vp3DecodeContext *s, int plane, int ystart, int yend) |
fe313556 |
{
int x, y;
int *bounding_values= s->bounding_values_array+127;
|
57783884 |
int width = s->fragment_width[!!plane];
int height = s->fragment_height[!!plane]; |
621f9a40 |
int fragment = s->fragment_start [plane] + ystart * width; |
93f30547 |
ptrdiff_t stride = s->current_frame.f->linesize[plane]; |
759001c5 |
uint8_t *plane_data = s->current_frame.f->data [plane]; |
621f9a40 |
if (!s->flipped_image) stride = -stride; |
735acf56 |
plane_data += s->data_offset[plane] + 8*ystart*stride; |
621f9a40 |
for (y = ystart; y < yend; y++) {
for (x = 0; x < width; x++) {
/* This code basically just deblocks on the edges of coded blocks.
* However, it has to be much more complicated because of the
* braindamaged deblock ordering used in VP3/Theora. Order matters
* because some pixels get filtered twice. */
if( s->all_fragments[fragment].coding_method != MODE_COPY )
{
/* do not perform left edge filter for left columns frags */
if (x > 0) { |
28f9ab70 |
s->vp3dsp.h_loop_filter( |
735acf56 |
plane_data + 8*x, |
621f9a40 |
stride, bounding_values);
} |
fe313556 |
|
621f9a40 |
/* do not perform top edge filter for top row fragments */
if (y > 0) { |
28f9ab70 |
s->vp3dsp.v_loop_filter( |
735acf56 |
plane_data + 8*x, |
621f9a40 |
stride, bounding_values);
} |
fe313556 |
|
621f9a40 |
/* do not perform right edge filter for right column
* fragments or if right fragment neighbor is also coded
* in this frame (it will be filtered in next iteration) */
if ((x < width - 1) &&
(s->all_fragments[fragment + 1].coding_method == MODE_COPY)) { |
28f9ab70 |
s->vp3dsp.h_loop_filter( |
735acf56 |
plane_data + 8*x + 8, |
621f9a40 |
stride, bounding_values); |
fe313556 |
}
|
621f9a40 |
/* do not perform bottom edge filter for bottom row
* fragments or if bottom fragment neighbor is also coded
* in this frame (it will be filtered in the next row) */
if ((y < height - 1) &&
(s->all_fragments[fragment + width].coding_method == MODE_COPY)) { |
28f9ab70 |
s->vp3dsp.v_loop_filter( |
735acf56 |
plane_data + 8*x + 8*stride, |
621f9a40 |
stride, bounding_values);
} |
fe313556 |
} |
621f9a40 |
fragment++; |
fe313556 |
} |
735acf56 |
plane_data += 8*stride; |
621f9a40 |
} |
fe313556 |
}
|
a8de3901 |
/** |
49bd8e4b |
* Pull DCT tokens from the 64 levels to decode and dequant the coefficients |
c72625f2 |
* for the next block in coding order
*/
static inline int vp3_dequant(Vp3DecodeContext *s, Vp3Fragment *frag, |
88bd7fdc |
int plane, int inter, int16_t block[64]) |
c72625f2 |
{
int16_t *dequantizer = s->qmat[frag->qpi][inter][plane]; |
d85c9b03 |
uint8_t *perm = s->idct_scantable; |
c72625f2 |
int i = 0;
do {
int token = *s->dct_tokens[plane][i];
switch (token & 3) {
case 0: // EOB
if (--token < 4) // 0-3 are token types, so the EOB run must now be 0
s->dct_tokens[plane][i]++;
else
*s->dct_tokens[plane][i] = token & ~3;
goto end;
case 1: // zero run
s->dct_tokens[plane][i]++;
i += (token >> 2) & 0x7f; |
8b94df0f |
if (i > 63) { |
eef5c35b |
av_log(s->avctx, AV_LOG_ERROR, "Coefficient index overflow\n"); |
8b94df0f |
return i; |
eef5c35b |
} |
c72625f2 |
block[perm[i]] = (token >> 9) * dequantizer[perm[i]];
i++;
break;
case 2: // coeff
block[perm[i]] = (token >> 2) * dequantizer[perm[i]];
s->dct_tokens[plane][i++]++;
break; |
d7097c2d |
default: // shouldn't happen |
c72625f2 |
return i;
}
} while (i < 64); |
9b4767e4 |
// return value is expected to be a valid level
i--; |
c72625f2 |
end:
// the actual DC+prediction is in the fragment structure
block[0] = frag->dc * s->qmat[0][inter][plane][0];
return i;
}
/** |
a8de3901 |
* called when all pixels up to row y are complete
*/
static void vp3_draw_horiz_band(Vp3DecodeContext *s, int y)
{ |
560f773c |
int h, cy, i;
int offset[AV_NUM_DATA_POINTERS]; |
a8de3901 |
|
27237d52 |
if (HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) { |
4a5a1689 |
int y_flipped = s->flipped_image ? s->avctx->height-y : y;
// At the end of the frame, report INT_MAX instead of the height of the frame.
// This makes the other threads' ff_thread_await_progress() calls cheaper, because
// they don't have to clip their values.
ff_thread_report_progress(&s->current_frame, y_flipped==s->avctx->height ? INT_MAX : y_flipped-1, 0);
}
|
a8de3901 |
if(s->avctx->draw_horiz_band==NULL)
return;
h= y - s->last_slice_end; |
3b9ee20f |
s->last_slice_end= y; |
a8de3901 |
y -= h;
if (!s->flipped_image) { |
83f72f13 |
y = s->avctx->height - y - h; |
a8de3901 |
}
|
8764389d |
cy = y >> s->chroma_y_shift; |
759001c5 |
offset[0] = s->current_frame.f->linesize[0]*y;
offset[1] = s->current_frame.f->linesize[1]*cy;
offset[2] = s->current_frame.f->linesize[2]*cy; |
560f773c |
for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
offset[i] = 0; |
a8de3901 |
emms_c(); |
759001c5 |
s->avctx->draw_horiz_band(s->avctx, s->current_frame.f, offset, y, 3, h); |
a8de3901 |
}
|
4a5a1689 |
/**
* Wait for the reference frame of the current fragment.
* The progress value is in luma pixel rows.
*/
static void await_reference_row(Vp3DecodeContext *s, Vp3Fragment *fragment, int motion_y, int y)
{ |
759001c5 |
ThreadFrame *ref_frame; |
4a5a1689 |
int ref_row;
int border = motion_y&1;
if (fragment->coding_method == MODE_USING_GOLDEN ||
fragment->coding_method == MODE_GOLDEN_MV)
ref_frame = &s->golden_frame;
else
ref_frame = &s->last_frame;
ref_row = y + (motion_y>>1);
ref_row = FFMAX(FFABS(ref_row), ref_row + 8 + border);
ff_thread_await_progress(ref_frame, ref_row, 0);
}
|
d86053a4 |
/* |
dc4b78d9 |
* Perform the final rendering for a particular slice of data. |
7a095ea6 |
* The slice number ranges from 0..(c_superblock_height - 1). |
dc4b78d9 |
*/
static void render_slice(Vp3DecodeContext *s, int slice)
{ |
dc4a1883 |
int x, y, i, j, fragment; |
88bd7fdc |
int16_t *block = s->block; |
dc4b78d9 |
int motion_x = 0xdeadbeef, motion_y = 0xdeadbeef;
int motion_halfpel_index;
uint8_t *motion_source; |
7a095ea6 |
int plane, first_pixel; |
dc4b78d9 |
|
7a095ea6 |
if (slice >= s->c_superblock_height) |
dc4b78d9 |
return;
for (plane = 0; plane < 3; plane++) { |
759001c5 |
uint8_t *output_plane = s->current_frame.f->data [plane] + s->data_offset[plane];
uint8_t * last_plane = s-> last_frame.f->data [plane] + s->data_offset[plane];
uint8_t *golden_plane = s-> golden_frame.f->data [plane] + s->data_offset[plane]; |
c341f734 |
ptrdiff_t stride = s->current_frame.f->linesize[plane]; |
1e76a1da |
int plane_width = s->width >> (plane && s->chroma_x_shift);
int plane_height = s->height >> (plane && s->chroma_y_shift); |
14268254 |
int8_t (*motion_val)[2] = s->motion_val[!!plane]; |
7a095ea6 |
|
1e76a1da |
int sb_x, sb_y = slice << (!plane && s->chroma_y_shift);
int slice_height = sb_y + 1 + (!plane && s->chroma_y_shift); |
7a095ea6 |
int slice_width = plane ? s->c_superblock_width : s->y_superblock_width;
|
57783884 |
int fragment_width = s->fragment_width[!!plane];
int fragment_height = s->fragment_height[!!plane]; |
7a095ea6 |
int fragment_start = s->fragment_start[plane]; |
27237d52 |
int do_await = !plane && HAVE_THREADS && (s->avctx->active_thread_type&FF_THREAD_FRAME); |
1abbf64e |
if (!s->flipped_image) stride = -stride; |
161e8cf4 |
if (CONFIG_GRAY && plane && (s->avctx->flags & CODEC_FLAG_GRAY))
continue; |
dc4b78d9 |
|
7a095ea6 |
/* for each superblock row in the slice (both of them)... */
for (; sb_y < slice_height; sb_y++) { |
dc4b78d9 |
|
7a095ea6 |
/* for each superblock in a row... */
for (sb_x = 0; sb_x < slice_width; sb_x++) { |
dc4b78d9 |
|
7a095ea6 |
/* for each block in a superblock... */
for (j = 0; j < 16; j++) {
x = 4*sb_x + hilbert_offset[j][0];
y = 4*sb_y + hilbert_offset[j][1]; |
dc4a1883 |
fragment = y*fragment_width + x; |
7a095ea6 |
|
dc4a1883 |
i = fragment_start + fragment; |
7a095ea6 |
// bounds check
if (x >= fragment_width || y >= fragment_height)
continue;
first_pixel = 8*y*stride + 8*x; |
dc4b78d9 |
|
4a5a1689 |
if (do_await && s->all_fragments[i].coding_method != MODE_INTRA)
await_reference_row(s, &s->all_fragments[i], motion_val[fragment][1], (16*y) >> s->chroma_y_shift);
|
dc4b78d9 |
/* transform if this block was coded */ |
161e8cf4 |
if (s->all_fragments[i].coding_method != MODE_COPY) { |
dc4b78d9 |
if ((s->all_fragments[i].coding_method == MODE_USING_GOLDEN) ||
(s->all_fragments[i].coding_method == MODE_GOLDEN_MV))
motion_source= golden_plane; |
115329f1 |
else |
dc4b78d9 |
motion_source= last_plane;
|
735acf56 |
motion_source += first_pixel; |
dc4b78d9 |
motion_halfpel_index = 0;
/* sort out the motion vector if this fragment is coded
* using a motion vector method */
if ((s->all_fragments[i].coding_method > MODE_INTRA) &&
(s->all_fragments[i].coding_method != MODE_USING_GOLDEN)) {
int src_x, src_y; |
dc4a1883 |
motion_x = motion_val[fragment][0];
motion_y = motion_val[fragment][1]; |
dc4b78d9 |
|
7a095ea6 |
src_x= (motion_x>>1) + 8*x;
src_y= (motion_y>>1) + 8*y; |
dc4b78d9 |
motion_halfpel_index = motion_x & 0x01;
motion_source += (motion_x >> 1);
motion_halfpel_index |= (motion_y & 0x01) << 1;
motion_source += ((motion_y >> 1) * stride);
if(src_x<0 || src_y<0 || src_x + 9 >= plane_width || src_y + 9 >= plane_height){
uint8_t *temp= s->edge_emu_buffer; |
0cfcbf21 |
if(stride<0) temp -= 8*stride; |
dc4b78d9 |
|
458446ac |
s->vdsp.emulated_edge_mc(temp, motion_source,
stride, stride, |
face578d |
9, 9, src_x, src_y, |
458446ac |
plane_width,
plane_height); |
dc4b78d9 |
motion_source= temp;
}
} |
115329f1 |
|
dc4b78d9 |
/* first, take care of copying a block from either the
* previous or the golden frame */
if (s->all_fragments[i].coding_method != MODE_INTRA) { |
115329f1 |
/* Note, it is possible to implement all MC cases with
put_no_rnd_pixels_l2 which would look more like the
VP3 source but this would be slower as |
dc4b78d9 |
put_no_rnd_pixels_tab is better optimzed */
if(motion_halfpel_index != 3){ |
d1293512 |
s->hdsp.put_no_rnd_pixels_tab[1][motion_halfpel_index]( |
735acf56 |
output_plane + first_pixel, |
dc4b78d9 |
motion_source, stride, 8);
}else{
int d= (motion_x ^ motion_y)>>31; // d is 0 if motion_x and _y have the same sign, else -1 |
4a73fbd9 |
s->vp3dsp.put_no_rnd_pixels_l2( |
735acf56 |
output_plane + first_pixel, |
115329f1 |
motion_source - d,
motion_source + stride + 1 + d, |
dc4b78d9 |
stride, 8);
}
}
/* invert DCT and place (or add) in final output */ |
115329f1 |
|
dc4b78d9 |
if (s->all_fragments[i].coding_method == MODE_INTRA) { |
a2a12e33 |
vp3_dequant(s, s->all_fragments + i, plane, 0, block); |
28f9ab70 |
s->vp3dsp.idct_put( |
735acf56 |
output_plane + first_pixel, |
dc4b78d9 |
stride,
block);
} else { |
a2a12e33 |
if (vp3_dequant(s, s->all_fragments + i, plane, 1, block)) { |
28f9ab70 |
s->vp3dsp.idct_add( |
735acf56 |
output_plane + first_pixel, |
dc4b78d9 |
stride,
block); |
eb6a6cd7 |
} else { |
28f9ab70 |
s->vp3dsp.idct_dc_add(output_plane + first_pixel, stride, block); |
eb6a6cd7 |
} |
dc4b78d9 |
}
} else {
/* copy directly from the previous frame */ |
d1293512 |
s->hdsp.put_pixels_tab[1][0]( |
735acf56 |
output_plane + first_pixel,
last_plane + first_pixel, |
dc4b78d9 |
stride, 8);
} |
7a095ea6 |
} |
dc4b78d9 |
} |
7a095ea6 |
// Filter up to the last row in the superblock row |
a4501a45 |
if (!s->skip_loop_filter)
apply_loop_filter(s, plane, 4*sb_y - !!sb_y, FFMIN(4*sb_y+3, fragment_height-1)); |
dc4b78d9 |
}
}
/* this looks like a good place for slice dispatch... */
/* algorithm:
* if (slice == s->macroblock_height - 1) |
f44b08a5 |
* dispatch (both last slice & 2nd-to-last slice);
* else if (slice > 0)
* dispatch (slice - 1); |
dc4b78d9 |
*/
|
3d487db1 |
vp3_draw_horiz_band(s, FFMIN((32 << s->chroma_y_shift) * (slice + 1) -16, s->height-16)); |
dc4b78d9 |
}
|
3c90abf4 |
/// Allocate tables for per-frame data in Vp3DecodeContext
static av_cold int allocate_tables(AVCodecContext *avctx)
{
Vp3DecodeContext *s = avctx->priv_data;
int y_fragment_count, c_fragment_count;
y_fragment_count = s->fragment_width[0] * s->fragment_height[0];
c_fragment_count = s->fragment_width[1] * s->fragment_height[1];
|
dbb49a65 |
s->superblock_coding = av_mallocz(s->superblock_count);
s->all_fragments = av_mallocz(s->fragment_count * sizeof(Vp3Fragment));
s->coded_fragment_list[0] = av_mallocz(s->fragment_count * sizeof(int));
s->dct_tokens_base = av_mallocz(64*s->fragment_count * sizeof(*s->dct_tokens_base));
s->motion_val[0] = av_mallocz(y_fragment_count * sizeof(*s->motion_val[0]));
s->motion_val[1] = av_mallocz(c_fragment_count * sizeof(*s->motion_val[1])); |
3c90abf4 |
/* work out the block mapping tables */ |
dbb49a65 |
s->superblock_fragments = av_mallocz(s->superblock_count * 16 * sizeof(int));
s->macroblock_coding = av_mallocz(s->macroblock_count + 1); |
3c90abf4 |
if (!s->superblock_coding || !s->all_fragments || !s->dct_tokens_base ||
!s->coded_fragment_list[0] || !s->superblock_fragments || !s->macroblock_coding ||
!s->motion_val[0] || !s->motion_val[1]) {
vp3_decode_end(avctx);
return -1;
}
init_block_mapping(s);
return 0;
}
|
759001c5 |
static av_cold int init_frames(Vp3DecodeContext *s)
{
s->current_frame.f = av_frame_alloc();
s->last_frame.f = av_frame_alloc();
s->golden_frame.f = av_frame_alloc();
if (!s->current_frame.f || !s->last_frame.f || !s->golden_frame.f) {
av_frame_free(&s->current_frame.f);
av_frame_free(&s->last_frame.f);
av_frame_free(&s->golden_frame.f);
return AVERROR(ENOMEM);
}
return 0;
}
|
98a6fff9 |
static av_cold int vp3_decode_init(AVCodecContext *avctx) |
d86053a4 |
{
Vp3DecodeContext *s = avctx->priv_data; |
759001c5 |
int i, inter, plane, ret; |
892fc83e |
int c_width;
int c_height; |
1e76a1da |
int y_fragment_count, c_fragment_count; |
d86053a4 |
|
759001c5 |
ret = init_frames(s);
if (ret < 0)
return ret;
avctx->internal->allocate_progress = 1;
|
3c3f113e |
if (avctx->codec_tag == MKTAG('V','P','3','0')) |
bb270c08 |
s->version = 0; |
3c3f113e |
else |
bb270c08 |
s->version = 1; |
3c3f113e |
|
d86053a4 |
s->avctx = avctx; |
ef516f73 |
s->width = FFALIGN(avctx->width, 16);
s->height = FFALIGN(avctx->height, 16); |
7a72695c |
if (avctx->codec_id != AV_CODEC_ID_THEORA) |
716d413c |
avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
580a7465 |
avctx->chroma_sample_location = AVCHROMA_LOC_CENTER; |
d1293512 |
ff_hpeldsp_init(&s->hdsp, avctx->flags | CODEC_FLAG_BITEXACT); |
8c53d39e |
ff_videodsp_init(&s->vdsp, 8); |
28f9ab70 |
ff_vp3dsp_init(&s->vp3dsp, avctx->flags); |
115329f1 |
|
d85c9b03 |
for (i = 0; i < 64; i++) { |
f2408ec9 |
#define TRANSPOSE(x) (x >> 3) | ((x & 7) << 3)
s->idct_permutation[i] = TRANSPOSE(i);
s->idct_scantable[i] = TRANSPOSE(ff_zigzag_direct[i]);
#undef TRANSPOSE |
d85c9b03 |
} |
d86053a4 |
/* initialize to an impossible value which will force a recalculation
* in the first frame decode */ |
f2264fa5 |
for (i = 0; i < 3; i++)
s->qps[i] = -1; |
d86053a4 |
|
1e76a1da |
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_x_shift, &s->chroma_y_shift);
|
892fc83e |
s->y_superblock_width = (s->width + 31) / 32;
s->y_superblock_height = (s->height + 31) / 32; |
35c28d23 |
s->y_superblock_count = s->y_superblock_width * s->y_superblock_height; |
892fc83e |
/* work out the dimensions for the C planes */ |
1e76a1da |
c_width = s->width >> s->chroma_x_shift;
c_height = s->height >> s->chroma_y_shift; |
892fc83e |
s->c_superblock_width = (c_width + 31) / 32;
s->c_superblock_height = (c_height + 31) / 32; |
35c28d23 |
s->c_superblock_count = s->c_superblock_width * s->c_superblock_height; |
892fc83e |
|
35c28d23 |
s->superblock_count = s->y_superblock_count + (s->c_superblock_count * 2);
s->u_superblock_start = s->y_superblock_count;
s->v_superblock_start = s->u_superblock_start + s->c_superblock_count; |
d86053a4 |
s->macroblock_width = (s->width + 15) / 16;
s->macroblock_height = (s->height + 15) / 16;
s->macroblock_count = s->macroblock_width * s->macroblock_height;
|
57783884 |
s->fragment_width[0] = s->width / FRAGMENT_PIXELS;
s->fragment_height[0] = s->height / FRAGMENT_PIXELS; |
1e76a1da |
s->fragment_width[1] = s->fragment_width[0] >> s->chroma_x_shift;
s->fragment_height[1] = s->fragment_height[0] >> s->chroma_y_shift; |
d86053a4 |
/* fragment count covers all 8x8 blocks for all 3 planes */ |
1e76a1da |
y_fragment_count = s->fragment_width[0] * s->fragment_height[0];
c_fragment_count = s->fragment_width[1] * s->fragment_height[1];
s->fragment_count = y_fragment_count + 2*c_fragment_count;
s->fragment_start[1] = y_fragment_count;
s->fragment_start[2] = y_fragment_count + c_fragment_count; |
d86053a4 |
|
f44ee2c3 |
if (!s->theora_tables)
{ |
2287c100 |
for (i = 0; i < 64; i++) { |
bb270c08 |
s->coded_dc_scale_factor[i] = vp31_dc_scale_factor[i];
s->coded_ac_scale_factor[i] = vp31_ac_scale_factor[i]; |
ae1dd8e1 |
s->base_matrix[0][i] = vp31_intra_y_dequant[i];
s->base_matrix[1][i] = vp31_intra_c_dequant[i];
s->base_matrix[2][i] = vp31_inter_dequant[i]; |
bb270c08 |
s->filter_limit_values[i] = vp31_filter_limit_values[i]; |
2287c100 |
} |
f44ee2c3 |
|
ae1dd8e1 |
for(inter=0; inter<2; inter++){
for(plane=0; plane<3; plane++){
s->qr_count[inter][plane]= 1;
s->qr_size [inter][plane][0]= 63;
s->qr_base [inter][plane][0]=
s->qr_base [inter][plane][1]= 2*inter + (!!plane)*!inter;
}
}
|
39922395 |
/* init VLC tables */
for (i = 0; i < 16; i++) {
/* DC histograms */ |
8e6daa4a |
init_vlc(&s->dc_vlc[i], 11, 32, |
39922395 |
&dc_bias[i][0][1], 4, 2,
&dc_bias[i][0][0], 4, 2, 0);
/* group 1 AC histograms */ |
8e6daa4a |
init_vlc(&s->ac_vlc_1[i], 11, 32, |
39922395 |
&ac_bias_0[i][0][1], 4, 2,
&ac_bias_0[i][0][0], 4, 2, 0);
/* group 2 AC histograms */ |
8e6daa4a |
init_vlc(&s->ac_vlc_2[i], 11, 32, |
39922395 |
&ac_bias_1[i][0][1], 4, 2,
&ac_bias_1[i][0][0], 4, 2, 0);
/* group 3 AC histograms */ |
8e6daa4a |
init_vlc(&s->ac_vlc_3[i], 11, 32, |
39922395 |
&ac_bias_2[i][0][1], 4, 2,
&ac_bias_2[i][0][0], 4, 2, 0);
/* group 4 AC histograms */ |
8e6daa4a |
init_vlc(&s->ac_vlc_4[i], 11, 32, |
39922395 |
&ac_bias_3[i][0][1], 4, 2,
&ac_bias_3[i][0][0], 4, 2, 0);
}
} else {
|
8e6daa4a |
for (i = 0; i < 16; i++) { |
39922395 |
/* DC histograms */ |
8e6daa4a |
if (init_vlc(&s->dc_vlc[i], 11, 32,
&s->huffman_table[i][0][1], 8, 4,
&s->huffman_table[i][0][0], 8, 4, 0) < 0) |
c4b7b8bf |
goto vlc_fail; |
39922395 |
/* group 1 AC histograms */ |
8e6daa4a |
if (init_vlc(&s->ac_vlc_1[i], 11, 32,
&s->huffman_table[i+16][0][1], 8, 4,
&s->huffman_table[i+16][0][0], 8, 4, 0) < 0) |
c4b7b8bf |
goto vlc_fail; |
39922395 |
/* group 2 AC histograms */ |
8e6daa4a |
if (init_vlc(&s->ac_vlc_2[i], 11, 32,
&s->huffman_table[i+16*2][0][1], 8, 4,
&s->huffman_table[i+16*2][0][0], 8, 4, 0) < 0) |
c4b7b8bf |
goto vlc_fail; |
39922395 |
/* group 3 AC histograms */ |
8e6daa4a |
if (init_vlc(&s->ac_vlc_3[i], 11, 32,
&s->huffman_table[i+16*3][0][1], 8, 4,
&s->huffman_table[i+16*3][0][0], 8, 4, 0) < 0) |
c4b7b8bf |
goto vlc_fail; |
39922395 |
/* group 4 AC histograms */ |
8e6daa4a |
if (init_vlc(&s->ac_vlc_4[i], 11, 32,
&s->huffman_table[i+16*4][0][1], 8, 4,
&s->huffman_table[i+16*4][0][0], 8, 4, 0) < 0) |
c4b7b8bf |
goto vlc_fail; |
39922395 |
} |
d86053a4 |
}
|
d8278bab |
init_vlc(&s->superblock_run_length_vlc, 6, 34,
&superblock_run_length_vlc_table[0][1], 4, 2,
&superblock_run_length_vlc_table[0][0], 4, 2, 0);
|
dd36b667 |
init_vlc(&s->fragment_run_length_vlc, 5, 30, |
0ad72bdd |
&fragment_run_length_vlc_table[0][1], 4, 2,
&fragment_run_length_vlc_table[0][0], 4, 2, 0);
init_vlc(&s->mode_code_vlc, 3, 8,
&mode_code_vlc_table[0][1], 2, 1,
&mode_code_vlc_table[0][0], 2, 1, 0);
init_vlc(&s->motion_vector_vlc, 6, 63,
&motion_vector_vlc_table[0][1], 2, 1,
&motion_vector_vlc_table[0][0], 2, 1, 0);
|
3c90abf4 |
return allocate_tables(avctx); |
c4b7b8bf |
vlc_fail:
av_log(avctx, AV_LOG_FATAL, "Invalid huffman table\n");
return -1; |
d86053a4 |
}
|
4a5a1689 |
/// Release and shuffle frames after decode finishes |
759001c5 |
static int update_frames(AVCodecContext *avctx) |
4a5a1689 |
{
Vp3DecodeContext *s = avctx->priv_data; |
759001c5 |
int ret = 0; |
4a5a1689 |
/* shuffle frames (last = current) */ |
759001c5 |
ff_thread_release_buffer(avctx, &s->last_frame);
ret = ff_thread_ref_frame(&s->last_frame, &s->current_frame);
if (ret < 0)
goto fail; |
4a5a1689 |
if (s->keyframe) { |
759001c5 |
ff_thread_release_buffer(avctx, &s->golden_frame);
ret = ff_thread_ref_frame(&s->golden_frame, &s->current_frame); |
4a5a1689 |
}
|
759001c5 |
fail:
ff_thread_release_buffer(avctx, &s->current_frame);
return ret;
}
static int ref_frame(Vp3DecodeContext *s, ThreadFrame *dst, ThreadFrame *src)
{
ff_thread_release_buffer(s->avctx, dst);
if (src->f->data[0])
return ff_thread_ref_frame(dst, src);
return 0;
}
static int ref_frames(Vp3DecodeContext *dst, Vp3DecodeContext *src)
{
int ret;
if ((ret = ref_frame(dst, &dst->current_frame, &src->current_frame)) < 0 ||
(ret = ref_frame(dst, &dst->golden_frame, &src->golden_frame)) < 0 ||
(ret = ref_frame(dst, &dst->last_frame, &src->last_frame)) < 0)
return ret;
return 0; |
4a5a1689 |
}
static int vp3_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
{
Vp3DecodeContext *s = dst->priv_data, *s1 = src->priv_data;
int qps_changed = 0, i, err;
|
8370e426 |
#define copy_fields(to, from, start_field, end_field) memcpy(&to->start_field, &from->start_field, (char*)&to->end_field - (char*)&to->start_field)
|
759001c5 |
if (!s1->current_frame.f->data[0] |
4a5a1689 |
||s->width != s1->width |
8370e426 |
||s->height!= s1->height) {
if (s != s1) |
759001c5 |
ref_frames(s, s1); |
4a5a1689 |
return -1; |
8370e426 |
} |
4a5a1689 |
if (s != s1) {
// init tables if the first frame hasn't been decoded |
759001c5 |
if (!s->current_frame.f->data[0]) { |
4a5a1689 |
int y_fragment_count, c_fragment_count;
s->avctx = dst;
err = allocate_tables(dst);
if (err)
return err;
y_fragment_count = s->fragment_width[0] * s->fragment_height[0];
c_fragment_count = s->fragment_width[1] * s->fragment_height[1];
memcpy(s->motion_val[0], s1->motion_val[0], y_fragment_count * sizeof(*s->motion_val[0]));
memcpy(s->motion_val[1], s1->motion_val[1], c_fragment_count * sizeof(*s->motion_val[1]));
}
// copy previous frame data |
759001c5 |
if ((err = ref_frames(s, s1)) < 0)
return err;
s->keyframe = s1->keyframe; |
4a5a1689 |
// copy qscale data if necessary
for (i = 0; i < 3; i++) {
if (s->qps[i] != s1->qps[1]) {
qps_changed = 1;
memcpy(&s->qmat[i], &s1->qmat[i], sizeof(s->qmat[i]));
}
}
|
d1472386 |
if (s->qps[0] != s1->qps[0]) |
4a5a1689 |
memcpy(&s->bounding_values_array, &s1->bounding_values_array, sizeof(s->bounding_values_array));
if (qps_changed)
copy_fields(s, s1, qps, superblock_count);
#undef copy_fields
}
|
759001c5 |
return update_frames(dst); |
4a5a1689 |
}
|
115329f1 |
static int vp3_decode_frame(AVCodecContext *avctx, |
df9b9567 |
void *data, int *got_frame, |
7a00bbad |
AVPacket *avpkt) |
d86053a4 |
{ |
7a00bbad |
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size; |
d86053a4 |
Vp3DecodeContext *s = avctx->priv_data;
GetBitContext gb; |
759001c5 |
int i, ret; |
d86053a4 |
init_get_bits(&gb, buf, buf_size * 8); |
115329f1 |
|
5b95d39e |
#if CONFIG_THEORA_DECODER |
f44ee2c3 |
if (s->theora && get_bits1(&gb))
{ |
bc15fcb8 |
int type = get_bits(&gb, 7);
skip_bits_long(&gb, 6*8); /* "theora" */
|
14c8ee00 |
if (s->avctx->active_thread_type&FF_THREAD_FRAME) {
av_log(avctx, AV_LOG_ERROR, "midstream reconfiguration with multithreading is unsupported, try -threads 1\n");
return AVERROR_PATCHWELCOME;
} |
bc15fcb8 |
if (type == 0) {
vp3_decode_end(avctx);
ret = theora_decode_header(avctx, &gb);
if (ret < 0) {
vp3_decode_end(avctx);
} else
ret = vp3_decode_init(avctx);
return ret;
} else if (type == 2) {
ret = theora_decode_tables(avctx, &gb);
if (ret < 0) {
vp3_decode_end(avctx);
} else
ret = vp3_decode_init(avctx);
return ret;
}
|
bb270c08 |
av_log(avctx, AV_LOG_ERROR, "Header packet passed to frame decoder, skipping\n");
return -1; |
f44ee2c3 |
} |
5b95d39e |
#endif |
3c3f113e |
s->keyframe = !get_bits1(&gb); |
bc15fcb8 |
if (!s->all_fragments) {
av_log(avctx, AV_LOG_ERROR, "Data packet without prior valid headers\n");
return -1;
} |
3c3f113e |
if (!s->theora) |
bb270c08 |
skip_bits(&gb, 1); |
f2264fa5 |
for (i = 0; i < 3; i++)
s->last_qps[i] = s->qps[i]; |
efea8528 |
|
f2264fa5 |
s->nqps=0; |
efea8528 |
do{ |
f2264fa5 |
s->qps[s->nqps++]= get_bits(&gb, 6);
} while(s->theora >= 0x030200 && s->nqps<3 && get_bits1(&gb));
for (i = s->nqps; i < 3; i++)
s->qps[i] = -1; |
d86053a4 |
|
f8830383 |
if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
bb270c08 |
av_log(s->avctx, AV_LOG_INFO, " VP3 %sframe #%d: Q index = %d\n", |
6ee99a7e |
s->keyframe?"key":"", avctx->frame_number+1, s->qps[0]); |
d86053a4 |
|
a4501a45 |
s->skip_loop_filter = !s->filter_limit_values[s->qps[0]] ||
avctx->skip_loop_filter >= (s->keyframe ? AVDISCARD_ALL : AVDISCARD_NONKEY);
|
f2264fa5 |
if (s->qps[0] != s->last_qps[0]) |
f44b08a5 |
init_loop_filter(s); |
f2264fa5 |
for (i = 0; i < s->nqps; i++)
// reinit all dequantizers if the first one changed, because
// the DC of the first quantizer must be used for all matrices
if (s->qps[i] != s->last_qps[i] || s->qps[0] != s->last_qps[0])
init_dequantizer(s, i); |
642d7e84 |
|
068e82ba |
if (avctx->skip_frame >= AVDISCARD_NONKEY && !s->keyframe)
return buf_size;
|
759001c5 |
s->current_frame.f->pict_type = s->keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P; |
80e9e63c |
s->current_frame.f->key_frame = s->keyframe; |
1ec94b0f |
if (ff_thread_get_buffer(avctx, &s->current_frame, AV_GET_BUFFER_FLAG_REF) < 0) |
e72d2d12 |
goto error; |
739b5090 |
|
d1472386 |
if (!s->edge_emu_buffer) |
759001c5 |
s->edge_emu_buffer = av_malloc(9*FFABS(s->current_frame.f->linesize[0])); |
d1472386 |
|
d86053a4 |
if (s->keyframe) { |
bb270c08 |
if (!s->theora)
{
skip_bits(&gb, 4); /* width code */
skip_bits(&gb, 4); /* height code */
if (s->version)
{
s->version = get_bits(&gb, 5); |
6ee99a7e |
if (avctx->frame_number == 0) |
bb270c08 |
av_log(s->avctx, AV_LOG_DEBUG, "VP version: %d\n", s->version);
}
}
if (s->version || s->theora)
{
if (get_bits1(&gb))
av_log(s->avctx, AV_LOG_ERROR, "Warning, unsupported keyframe coding type?!\n");
skip_bits(&gb, 2); /* reserved? */
} |
d86053a4 |
} else { |
759001c5 |
if (!s->golden_frame.f->data[0]) { |
7a4e8b59 |
av_log(s->avctx, AV_LOG_WARNING, "vp3: first frame not a keyframe\n"); |
ff65969f |
|
759001c5 |
s->golden_frame.f->pict_type = AV_PICTURE_TYPE_I; |
1ec94b0f |
if (ff_thread_get_buffer(avctx, &s->golden_frame, AV_GET_BUFFER_FLAG_REF) < 0) |
7a4e8b59 |
goto error; |
759001c5 |
ff_thread_release_buffer(avctx, &s->last_frame);
if ((ret = ff_thread_ref_frame(&s->last_frame, &s->golden_frame)) < 0)
goto error; |
f28e599f |
ff_thread_report_progress(&s->last_frame, INT_MAX, 0); |
d86053a4 |
}
}
|
703acd54 |
memset(s->all_fragments, 0, s->fragment_count * sizeof(Vp3Fragment)); |
4a5a1689 |
ff_thread_finish_setup(avctx); |
d86053a4 |
|
220a6f40 |
if (unpack_superblocks(s, &gb)){
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_superblocks\n"); |
e72d2d12 |
goto error; |
220a6f40 |
}
if (unpack_modes(s, &gb)){
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_modes\n"); |
e72d2d12 |
goto error; |
220a6f40 |
}
if (unpack_vectors(s, &gb)){
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_vectors\n"); |
e72d2d12 |
goto error; |
220a6f40 |
} |
f2264fa5 |
if (unpack_block_qpis(s, &gb)){
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_block_qpis\n"); |
e72d2d12 |
goto error; |
f2264fa5 |
} |
220a6f40 |
if (unpack_dct_coeffs(s, &gb)){
av_log(s->avctx, AV_LOG_ERROR, "error in unpack_dct_coeffs\n"); |
e72d2d12 |
goto error; |
892fc83e |
} |
735acf56 |
for (i = 0; i < 3; i++) { |
1e76a1da |
int height = s->height >> (i && s->chroma_y_shift); |
735acf56 |
if (s->flipped_image)
s->data_offset[i] = 0;
else |
759001c5 |
s->data_offset[i] = (height-1) * s->current_frame.f->linesize[i]; |
735acf56 |
} |
d86053a4 |
|
a8de3901 |
s->last_slice_end = 0; |
7a095ea6 |
for (i = 0; i < s->c_superblock_height; i++) |
dc4b78d9 |
render_slice(s, i); |
d86053a4 |
|
256c0662 |
// filter the last row
for (i = 0; i < 3; i++) { |
1e76a1da |
int row = (s->height >> (3+(i && s->chroma_y_shift))) - 1; |
256c0662 |
apply_loop_filter(s, i, row, row+1);
} |
83f72f13 |
vp3_draw_horiz_band(s, s->avctx->height); |
892fc83e |
|
759001c5 |
if ((ret = av_frame_ref(data, s->current_frame.f)) < 0)
return ret; |
df9b9567 |
*got_frame = 1; |
d86053a4 |
|
759001c5 |
if (!HAVE_THREADS || !(s->avctx->active_thread_type&FF_THREAD_FRAME)) {
ret = update_frames(avctx);
if (ret < 0)
return ret;
} |
d86053a4 |
return buf_size; |
e72d2d12 |
error: |
4a5a1689 |
ff_thread_report_progress(&s->current_frame, INT_MAX, 0);
|
27237d52 |
if (!HAVE_THREADS || !(s->avctx->active_thread_type&FF_THREAD_FRAME)) |
759001c5 |
av_frame_unref(s->current_frame.f); |
4a5a1689 |
|
e72d2d12 |
return -1; |
d86053a4 |
}
|
39922395 |
static int read_huffman_tree(AVCodecContext *avctx, GetBitContext *gb)
{
Vp3DecodeContext *s = avctx->priv_data;
|
5fc32c27 |
if (get_bits1(gb)) { |
39922395 |
int token;
if (s->entries >= 32) { /* overflow */
av_log(avctx, AV_LOG_ERROR, "huffman tree overflow\n");
return -1;
}
token = get_bits(gb, 5); |
1218777f |
av_dlog(avctx, "hti %d hbits %x token %d entry : %d size %d\n",
s->hti, s->hbits, token, s->entries, s->huff_code_size); |
39922395 |
s->huffman_table[s->hti][token][0] = s->hbits;
s->huffman_table[s->hti][token][1] = s->huff_code_size;
s->entries++;
}
else {
if (s->huff_code_size >= 32) {/* overflow */
av_log(avctx, AV_LOG_ERROR, "huffman tree overflow\n");
return -1;
}
s->huff_code_size++;
s->hbits <<= 1; |
00bbe276 |
if (read_huffman_tree(avctx, gb))
return -1; |
39922395 |
s->hbits |= 1; |
00bbe276 |
if (read_huffman_tree(avctx, gb))
return -1; |
39922395 |
s->hbits >>= 1;
s->huff_code_size--;
}
return 0;
}
|
bc4d1561 |
static int vp3_init_thread_copy(AVCodecContext *avctx)
{
Vp3DecodeContext *s = avctx->priv_data;
s->superblock_coding = NULL;
s->all_fragments = NULL;
s->coded_fragment_list[0] = NULL;
s->dct_tokens_base = NULL;
s->superblock_fragments = NULL;
s->macroblock_coding = NULL;
s->motion_val[0] = NULL;
s->motion_val[1] = NULL;
s->edge_emu_buffer = NULL;
|
759001c5 |
return init_frames(s); |
bc4d1561 |
}
|
b250f9c6 |
#if CONFIG_THEORA_DECODER |
716d413c |
static const enum AVPixelFormat theora_pix_fmts[4] = {
AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P |
1e76a1da |
};
|
e278056f |
static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb) |
f44ee2c3 |
{
Vp3DecodeContext *s = avctx->priv_data; |
ea3c2d53 |
int visible_width, visible_height, colorspace; |
ddc7e438 |
int offset_x = 0, offset_y = 0; |
b53febc1 |
int ret; |
6974952d |
AVRational fps, aspect; |
9a7ad925 |
|
e278056f |
s->theora = get_bits_long(gb, 24); |
356306ac |
av_log(avctx, AV_LOG_DEBUG, "Theora bitstream version %X\n", s->theora); |
105c3d25 |
|
ba7ee4a4 |
/* 3.2.0 aka alpha3 has the same frame orientation as original vp3 */ |
9a7ad925 |
/* but previous versions have the image flipped relative to vp3 */ |
ba7ee4a4 |
if (s->theora < 0x030200) |
9a7ad925 |
{ |
bb270c08 |
s->flipped_image = 1; |
9a7ad925 |
av_log(avctx, AV_LOG_DEBUG, "Old (<alpha3) Theora bitstream, flipped image\n");
} |
f44ee2c3 |
|
277e3e53 |
visible_width = s->width = get_bits(gb, 16) << 4;
visible_height = s->height = get_bits(gb, 16) << 4; |
115329f1 |
|
277e3e53 |
if (s->theora >= 0x030200) { |
a0ce2d1b |
visible_width = get_bits_long(gb, 24);
visible_height = get_bits_long(gb, 24); |
c0f716b8 |
|
ddc7e438 |
offset_x = get_bits(gb, 8); /* offset x */
offset_y = get_bits(gb, 8); /* offset y, from bottom */ |
ba4816a0 |
} |
f44ee2c3 |
|
8099d6c9 |
fps.num = get_bits_long(gb, 32);
fps.den = get_bits_long(gb, 32);
if (fps.num && fps.den) { |
6fc8226e |
if (fps.num < 0 || fps.den < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid framerate\n");
return AVERROR_INVALIDDATA;
} |
33e62383 |
av_reduce(&avctx->time_base.num, &avctx->time_base.den,
fps.den, fps.num, 1<<30); |
8099d6c9 |
}
|
6974952d |
aspect.num = get_bits_long(gb, 24);
aspect.den = get_bits_long(gb, 24);
if (aspect.num && aspect.den) {
av_reduce(&avctx->sample_aspect_ratio.num,
&avctx->sample_aspect_ratio.den,
aspect.num, aspect.den, 1<<30);
} |
115329f1 |
|
ba7ee4a4 |
if (s->theora < 0x030200) |
e278056f |
skip_bits(gb, 5); /* keyframe frequency force */ |
ea3c2d53 |
colorspace = get_bits(gb, 8); |
e278056f |
skip_bits(gb, 24); /* bitrate */ |
f44ee2c3 |
|
e278056f |
skip_bits(gb, 6); /* quality hint */ |
115329f1 |
|
ba7ee4a4 |
if (s->theora >= 0x030200) |
105c3d25 |
{ |
e278056f |
skip_bits(gb, 5); /* keyframe frequency force */ |
1e76a1da |
avctx->pix_fmt = theora_pix_fmts[get_bits(gb, 2)]; |
d1493d2c |
if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
av_log(avctx, AV_LOG_ERROR, "Invalid pixel format\n");
return AVERROR_INVALIDDATA;
} |
337f5c6e |
skip_bits(gb, 3); /* reserved */ |
105c3d25 |
} |
115329f1 |
|
e278056f |
// align_get_bits(gb); |
115329f1 |
|
c0f716b8 |
if ( visible_width <= s->width && visible_width > s->width-16 |
ddc7e438 |
&& visible_height <= s->height && visible_height > s->height-16
&& !offset_x && (offset_y == s->height - visible_height)) |
b53febc1 |
ret = ff_set_dimensions(avctx, visible_width, visible_height); |
c0f716b8 |
else |
b53febc1 |
ret = ff_set_dimensions(avctx, s->width, s->height);
if (ret < 0)
return ret; |
f44ee2c3 |
|
ea3c2d53 |
if (colorspace == 1) {
avctx->color_primaries = AVCOL_PRI_BT470M;
} else if (colorspace == 2) {
avctx->color_primaries = AVCOL_PRI_BT470BG;
}
if (colorspace == 1 || colorspace == 2) {
avctx->colorspace = AVCOL_SPC_BT470BG;
avctx->color_trc = AVCOL_TRC_BT709;
}
|
f44ee2c3 |
return 0;
}
|
e278056f |
static int theora_decode_tables(AVCodecContext *avctx, GetBitContext *gb) |
f44ee2c3 |
{
Vp3DecodeContext *s = avctx->priv_data; |
ae1dd8e1 |
int i, n, matrices, inter, plane; |
ba7ee4a4 |
if (s->theora >= 0x030200) { |
e278056f |
n = get_bits(gb, 3); |
9c7154c7 |
/* loop filter limit values table */ |
9d777508 |
if (n)
for (i = 0; i < 64; i++) |
10f69158 |
s->filter_limit_values[i] = get_bits(gb, n); |
ba7ee4a4 |
} |
115329f1 |
|
ba7ee4a4 |
if (s->theora >= 0x030200) |
e278056f |
n = get_bits(gb, 4) + 1; |
ba7ee4a4 |
else
n = 16; |
f44ee2c3 |
/* quality threshold table */
for (i = 0; i < 64; i++) |
e278056f |
s->coded_ac_scale_factor[i] = get_bits(gb, n); |
f44ee2c3 |
|
ba7ee4a4 |
if (s->theora >= 0x030200) |
e278056f |
n = get_bits(gb, 4) + 1; |
ba7ee4a4 |
else
n = 16; |
f44ee2c3 |
/* dc scale factor table */
for (i = 0; i < 64; i++) |
e278056f |
s->coded_dc_scale_factor[i] = get_bits(gb, n); |
f44ee2c3 |
|
ba7ee4a4 |
if (s->theora >= 0x030200) |
e278056f |
matrices = get_bits(gb, 9) + 1; |
ba7ee4a4 |
else |
2da2ba03 |
matrices = 3; |
f44ee2c3 |
|
ae1dd8e1 |
if(matrices > 384){
av_log(avctx, AV_LOG_ERROR, "invalid number of base matrixes\n");
return -1;
} |
3c3f113e |
|
ae1dd8e1 |
for(n=0; n<matrices; n++){ |
bb270c08 |
for (i = 0; i < 64; i++) |
ae1dd8e1 |
s->base_matrix[n][i]= get_bits(gb, 8);
} |
2da2ba03 |
|
ae1dd8e1 |
for (inter = 0; inter <= 1; inter++) {
for (plane = 0; plane <= 2; plane++) {
int newqr= 1;
if (inter || plane > 0) |
5fc32c27 |
newqr = get_bits1(gb); |
39922395 |
if (!newqr) { |
ae1dd8e1 |
int qtj, plj; |
5fc32c27 |
if(inter && get_bits1(gb)){ |
ae1dd8e1 |
qtj = 0;
plj = plane;
}else{
qtj= (3*inter + plane - 1) / 3;
plj= (plane + 2) % 3;
}
s->qr_count[inter][plane]= s->qr_count[qtj][plj];
memcpy(s->qr_size[inter][plane], s->qr_size[qtj][plj], sizeof(s->qr_size[0][0]));
memcpy(s->qr_base[inter][plane], s->qr_base[qtj][plj], sizeof(s->qr_base[0][0]));
} else {
int qri= 0; |
39922395 |
int qi = 0; |
ae1dd8e1 |
for(;;){
i= get_bits(gb, av_log2(matrices-1)+1);
if(i>= matrices){
av_log(avctx, AV_LOG_ERROR, "invalid base matrix index\n");
return -1;
}
s->qr_base[inter][plane][qri]= i;
if(qi >= 63)
break;
i = get_bits(gb, av_log2(63-qi)+1) + 1;
s->qr_size[inter][plane][qri++]= i;
qi += i; |
39922395 |
} |
ae1dd8e1 |
|
2da2ba03 |
if (qi > 63) { |
7146d2c2 |
av_log(avctx, AV_LOG_ERROR, "invalid qi %d > 63\n", qi); |
bb270c08 |
return -1;
} |
ae1dd8e1 |
s->qr_count[inter][plane]= qri; |
39922395 |
}
}
}
|
2da2ba03 |
/* Huffman tables */ |
39922395 |
for (s->hti = 0; s->hti < 80; s->hti++) {
s->entries = 0;
s->huff_code_size = 1; |
5fc32c27 |
if (!get_bits1(gb)) { |
39922395 |
s->hbits = 0; |
00bbe276 |
if(read_huffman_tree(avctx, gb))
return -1; |
39922395 |
s->hbits = 1; |
00bbe276 |
if(read_huffman_tree(avctx, gb))
return -1; |
39922395 |
}
} |
115329f1 |
|
f44ee2c3 |
s->theora_tables = 1; |
115329f1 |
|
f44ee2c3 |
return 0;
}
|
5ef251e5 |
static av_cold int theora_decode_init(AVCodecContext *avctx) |
f44ee2c3 |
{
Vp3DecodeContext *s = avctx->priv_data;
GetBitContext gb;
int ptype; |
da91ed59 |
uint8_t *header_start[3];
int header_len[3];
int i; |
115329f1 |
|
ac627b3d |
avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
1125606a |
|
f44ee2c3 |
s->theora = 1;
if (!avctx->extradata_size) |
7146d2c2 |
{
av_log(avctx, AV_LOG_ERROR, "Missing extradata!\n"); |
bb270c08 |
return -1; |
7146d2c2 |
} |
f44ee2c3 |
|
357db4c2 |
if (avpriv_split_xiph_headers(avctx->extradata, avctx->extradata_size, |
da91ed59 |
42, header_start, header_len) < 0) {
av_log(avctx, AV_LOG_ERROR, "Corrupt extradata\n");
return -1;
} |
ee89b2b9 |
|
da91ed59 |
for(i=0;i<3;i++) { |
e33db35b |
if (header_len[i] <= 0)
continue; |
fa6f2751 |
init_get_bits(&gb, header_start[i], header_len[i] * 8); |
f44ee2c3 |
ptype = get_bits(&gb, 8); |
115329f1 |
|
7146d2c2 |
if (!(ptype & 0x80))
{
av_log(avctx, AV_LOG_ERROR, "Invalid extradata!\n"); |
e278056f |
// return -1; |
115329f1 |
} |
7146d2c2 |
|
3700dab4 |
// FIXME: Check for this as well. |
0a8dedc9 |
skip_bits_long(&gb, 6*8); /* "theora" */ |
115329f1 |
|
f44ee2c3 |
switch(ptype)
{
case 0x80: |
d1493d2c |
if (theora_decode_header(avctx, &gb) < 0)
return -1; |
bb270c08 |
break;
case 0x81: |
2da2ba03 |
// FIXME: is this needed? it breaks sometimes |
bb270c08 |
// theora_decode_comments(avctx, gb);
break;
case 0x82: |
00bbe276 |
if (theora_decode_tables(avctx, &gb))
return -1; |
bb270c08 |
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unknown Theora config packet: %d\n", ptype&~0x80);
break; |
f44ee2c3 |
} |
12ce1f3f |
if(ptype != 0x81 && 8*header_len[i] != get_bits_count(&gb))
av_log(avctx, AV_LOG_WARNING, "%d bits left in packet %X\n", 8*header_len[i] - get_bits_count(&gb), ptype); |
116d866c |
if (s->theora < 0x030200)
break; |
ee89b2b9 |
} |
f44ee2c3 |
|
c79c960a |
return vp3_decode_init(avctx); |
f44ee2c3 |
}
|
e7e2df27 |
AVCodec ff_theora_decoder = { |
00c3b67b |
.name = "theora", |
b2bed932 |
.long_name = NULL_IF_CONFIG_SMALL("Theora"), |
00c3b67b |
.type = AVMEDIA_TYPE_VIDEO, |
36ef5369 |
.id = AV_CODEC_ID_THEORA, |
00c3b67b |
.priv_data_size = sizeof(Vp3DecodeContext),
.init = theora_decode_init,
.close = vp3_decode_end,
.decode = vp3_decode_frame,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
CODEC_CAP_FRAME_THREADS,
.flush = vp3_decode_flush, |
8370e426 |
.init_thread_copy = ONLY_IF_THREADS_ENABLED(vp3_init_thread_copy), |
4a5a1689 |
.update_thread_context = ONLY_IF_THREADS_ENABLED(vp3_update_thread_context) |
d86053a4 |
}; |
6f6a3e2a |
#endif |
f44ee2c3 |
|
e7e2df27 |
AVCodec ff_vp3_decoder = { |
00c3b67b |
.name = "vp3", |
b2bed932 |
.long_name = NULL_IF_CONFIG_SMALL("On2 VP3"), |
00c3b67b |
.type = AVMEDIA_TYPE_VIDEO, |
36ef5369 |
.id = AV_CODEC_ID_VP3, |
00c3b67b |
.priv_data_size = sizeof(Vp3DecodeContext),
.init = vp3_decode_init,
.close = vp3_decode_end,
.decode = vp3_decode_frame,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND |
CODEC_CAP_FRAME_THREADS,
.flush = vp3_decode_flush, |
8370e426 |
.init_thread_copy = ONLY_IF_THREADS_ENABLED(vp3_init_thread_copy), |
00c3b67b |
.update_thread_context = ONLY_IF_THREADS_ENABLED(vp3_update_thread_context), |
f44ee2c3 |
}; |