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hqx: Store shareable data in main decoder context 

In preparation for multithreaded decoding.
tags/n2.7
Vittorio Giovara 10 years ago
parent
ea031b75fb
commit
453642f8af
2 changed files with 65 additions and 62 deletions
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  1. +52
    -62
      libavcodec/hqx.c
  2. +13
    -0
      libavcodec/hqx.h

+ 52
- 62
libavcodec/hqx.c View File

@@ -40,9 +40,6 @@ enum HQXFormat {

#define HQX_HEADER_SIZE 59

typedef int (*mb_decode_func)(HQXContext *ctx, AVFrame *pic,
GetBitContext *gb, int x, int y);

/* macroblock selects a group of 4 possible quants and
* a block can use any of those four quantisers
* one column is powers of 2, the other one is powers of 2 * 3,
@@ -82,14 +79,14 @@ static const uint8_t hqx_quant_chroma[64] = {
44, 91, 96, 197, 203, 209, 232, 246,
};

static inline void put_blocks(HQXContext *ctx, AVFrame *pic, int plane,
static inline void put_blocks(HQXContext *ctx, int plane,
int x, int y, int ilace,
int16_t *block0, int16_t *block1,
const uint8_t *quant)
{
int fields = ilace ? 2 : 1;
int lsize = pic->linesize[plane];
uint8_t *p = pic->data[plane] + x * 2;
int lsize = ctx->pic->linesize[plane];
uint8_t *p = ctx->pic->data[plane] + x * 2;

ctx->hqxdsp.idct_put((uint16_t *)(p + y * lsize),
lsize * fields, block0, quant);
@@ -154,8 +151,7 @@ static int decode_block(GetBitContext *gb, VLC *vlc,
return 0;
}

static int hqx_decode_422(HQXContext *ctx, AVFrame *pic,
GetBitContext *gb, int x, int y)
static int hqx_decode_422(HQXContext *ctx, GetBitContext *gb, int x, int y)
{
const int *quants;
int flag;
@@ -179,16 +175,15 @@ static int hqx_decode_422(HQXContext *ctx, AVFrame *pic,
return ret;
}

put_blocks(ctx, pic, 0, x, y, flag, ctx->block[0], ctx->block[2], hqx_quant_luma);
put_blocks(ctx, pic, 0, x + 8, y, flag, ctx->block[1], ctx->block[3], hqx_quant_luma);
put_blocks(ctx, pic, 2, x >> 1, y, flag, ctx->block[4], ctx->block[5], hqx_quant_chroma);
put_blocks(ctx, pic, 1, x >> 1, y, flag, ctx->block[6], ctx->block[7], hqx_quant_chroma);
put_blocks(ctx, 0, x, y, flag, ctx->block[0], ctx->block[2], hqx_quant_luma);
put_blocks(ctx, 0, x + 8, y, flag, ctx->block[1], ctx->block[3], hqx_quant_luma);
put_blocks(ctx, 2, x >> 1, y, flag, ctx->block[4], ctx->block[5], hqx_quant_chroma);
put_blocks(ctx, 1, x >> 1, y, flag, ctx->block[6], ctx->block[7], hqx_quant_chroma);

return 0;
}

static int hqx_decode_422a(HQXContext *ctx, AVFrame *pic,
GetBitContext *gb, int x, int y)
static int hqx_decode_422a(HQXContext *ctx, GetBitContext *gb, int x, int y)
{
const int *quants;
int flag = 0;
@@ -226,18 +221,17 @@ static int hqx_decode_422a(HQXContext *ctx, AVFrame *pic,
}
}

put_blocks(ctx, pic, 3, x, y, flag, ctx->block[ 0], ctx->block[ 2], hqx_quant_luma);
put_blocks(ctx, pic, 3, x + 8, y, flag, ctx->block[ 1], ctx->block[ 3], hqx_quant_luma);
put_blocks(ctx, pic, 0, x, y, flag, ctx->block[ 4], ctx->block[ 6], hqx_quant_luma);
put_blocks(ctx, pic, 0, x + 8, y, flag, ctx->block[ 5], ctx->block[ 7], hqx_quant_luma);
put_blocks(ctx, pic, 2, x >> 1, y, flag, ctx->block[ 8], ctx->block[ 9], hqx_quant_chroma);
put_blocks(ctx, pic, 1, x >> 1, y, flag, ctx->block[10], ctx->block[11], hqx_quant_chroma);
put_blocks(ctx, 3, x, y, flag, ctx->block[ 0], ctx->block[ 2], hqx_quant_luma);
put_blocks(ctx, 3, x + 8, y, flag, ctx->block[ 1], ctx->block[ 3], hqx_quant_luma);
put_blocks(ctx, 0, x, y, flag, ctx->block[ 4], ctx->block[ 6], hqx_quant_luma);
put_blocks(ctx, 0, x + 8, y, flag, ctx->block[ 5], ctx->block[ 7], hqx_quant_luma);
put_blocks(ctx, 2, x >> 1, y, flag, ctx->block[ 8], ctx->block[ 9], hqx_quant_chroma);
put_blocks(ctx, 1, x >> 1, y, flag, ctx->block[10], ctx->block[11], hqx_quant_chroma);

return 0;
}

static int hqx_decode_444(HQXContext *ctx, AVFrame *pic,
GetBitContext *gb, int x, int y)
static int hqx_decode_444(HQXContext *ctx, GetBitContext *gb, int x, int y)
{
const int *quants;
int flag;
@@ -261,18 +255,17 @@ static int hqx_decode_444(HQXContext *ctx, AVFrame *pic,
return ret;
}

put_blocks(ctx, pic, 0, x, y, flag, ctx->block[0], ctx->block[ 2], hqx_quant_luma);
put_blocks(ctx, pic, 0, x + 8, y, flag, ctx->block[1], ctx->block[ 3], hqx_quant_luma);
put_blocks(ctx, pic, 2, x, y, flag, ctx->block[4], ctx->block[ 6], hqx_quant_chroma);
put_blocks(ctx, pic, 2, x + 8, y, flag, ctx->block[5], ctx->block[ 7], hqx_quant_chroma);
put_blocks(ctx, pic, 1, x, y, flag, ctx->block[8], ctx->block[10], hqx_quant_chroma);
put_blocks(ctx, pic, 1, x + 8, y, flag, ctx->block[9], ctx->block[11], hqx_quant_chroma);
put_blocks(ctx, 0, x, y, flag, ctx->block[0], ctx->block[ 2], hqx_quant_luma);
put_blocks(ctx, 0, x + 8, y, flag, ctx->block[1], ctx->block[ 3], hqx_quant_luma);
put_blocks(ctx, 2, x, y, flag, ctx->block[4], ctx->block[ 6], hqx_quant_chroma);
put_blocks(ctx, 2, x + 8, y, flag, ctx->block[5], ctx->block[ 7], hqx_quant_chroma);
put_blocks(ctx, 1, x, y, flag, ctx->block[8], ctx->block[10], hqx_quant_chroma);
put_blocks(ctx, 1, x + 8, y, flag, ctx->block[9], ctx->block[11], hqx_quant_chroma);

return 0;
}

static int hqx_decode_444a(HQXContext *ctx, AVFrame *pic,
GetBitContext *gb, int x, int y)
static int hqx_decode_444a(HQXContext *ctx, GetBitContext *gb, int x, int y)
{
const int *quants;
int flag = 0;
@@ -307,14 +300,14 @@ static int hqx_decode_444a(HQXContext *ctx, AVFrame *pic,
}
}

put_blocks(ctx, pic, 3, x, y, flag, ctx->block[ 0], ctx->block[ 2], hqx_quant_luma);
put_blocks(ctx, pic, 3, x + 8, y, flag, ctx->block[ 1], ctx->block[ 3], hqx_quant_luma);
put_blocks(ctx, pic, 0, x, y, flag, ctx->block[ 4], ctx->block[ 6], hqx_quant_luma);
put_blocks(ctx, pic, 0, x + 8, y, flag, ctx->block[ 5], ctx->block[ 7], hqx_quant_luma);
put_blocks(ctx, pic, 2, x, y, flag, ctx->block[ 8], ctx->block[10], hqx_quant_chroma);
put_blocks(ctx, pic, 2, x + 8, y, flag, ctx->block[ 9], ctx->block[11], hqx_quant_chroma);
put_blocks(ctx, pic, 1, x, y, flag, ctx->block[12], ctx->block[14], hqx_quant_chroma);
put_blocks(ctx, pic, 1, x + 8, y, flag, ctx->block[13], ctx->block[15], hqx_quant_chroma);
put_blocks(ctx, 3, x, y, flag, ctx->block[ 0], ctx->block[ 2], hqx_quant_luma);
put_blocks(ctx, 3, x + 8, y, flag, ctx->block[ 1], ctx->block[ 3], hqx_quant_luma);
put_blocks(ctx, 0, x, y, flag, ctx->block[ 4], ctx->block[ 6], hqx_quant_luma);
put_blocks(ctx, 0, x + 8, y, flag, ctx->block[ 5], ctx->block[ 7], hqx_quant_luma);
put_blocks(ctx, 2, x, y, flag, ctx->block[ 8], ctx->block[10], hqx_quant_chroma);
put_blocks(ctx, 2, x + 8, y, flag, ctx->block[ 9], ctx->block[11], hqx_quant_chroma);
put_blocks(ctx, 1, x, y, flag, ctx->block[12], ctx->block[14], hqx_quant_chroma);
put_blocks(ctx, 1, x + 8, y, flag, ctx->block[13], ctx->block[15], hqx_quant_chroma);

return 0;
}
@@ -323,8 +316,7 @@ static const int shuffle_16[16] = {
0, 5, 11, 14, 2, 7, 9, 13, 1, 4, 10, 15, 3, 6, 8, 12
};

static int decode_slice(HQXContext *ctx, AVFrame *pic, GetBitContext *gb,
int slice_no, mb_decode_func decode_func)
static int decode_slice(HQXContext *ctx, GetBitContext *gb, int slice_no)
{
int mb_w = (ctx->width + 15) >> 4;
int mb_h = (ctx->height + 15) >> 4;
@@ -370,7 +362,7 @@ static int decode_slice(HQXContext *ctx, AVFrame *pic, GetBitContext *gb,
mb_x += pos % grp_w;
mb_y = loc_row + (pos / grp_w);
}
decode_func(ctx, pic, gb, mb_x * 16, mb_y * 16);
ctx->decode_func(ctx, gb, mb_x * 16, mb_y * 16);
}
}

@@ -381,16 +373,12 @@ static int hqx_decode_frame(AVCodecContext *avctx, void *data,
int *got_picture_ptr, AVPacket *avpkt)
{
HQXContext *ctx = avctx->priv_data;
AVFrame *pic = data;
uint8_t *src = avpkt->data;
uint32_t info_tag, info_offset;
int data_start;
unsigned data_size;
GetBitContext gb;
int i, ret;
int slice;
uint32_t slice_off[17];
mb_decode_func decode_func = 0;

if (avpkt->size < 8)
return AVERROR_INVALIDDATA;
@@ -413,10 +401,12 @@ static int hqx_decode_frame(AVCodecContext *avctx, void *data,
av_log(avctx, AV_LOG_DEBUG, "Skipping INFO chunk.\n");
}

data_start = src - avpkt->data;
data_size = avpkt->size - data_start;
data_start = src - avpkt->data;
ctx->data_size = avpkt->size - data_start;
ctx->src = src;
ctx->pic = data;

if (data_size < HQX_HEADER_SIZE) {
if (ctx->data_size < HQX_HEADER_SIZE) {
av_log(avctx, AV_LOG_ERROR, "Frame too small.\n");
return AVERROR_INVALIDDATA;
}
@@ -431,7 +421,7 @@ static int hqx_decode_frame(AVCodecContext *avctx, void *data,
ctx->width = AV_RB16(src + 4);
ctx->height = AV_RB16(src + 6);
for (i = 0; i < 17; i++)
slice_off[i] = AV_RB24(src + 8 + i * 3);
ctx->slice_off[i] = AV_RB24(src + 8 + i * 3);

if (ctx->dcb == 8) {
av_log(avctx, AV_LOG_ERROR, "Invalid DC precision %d.\n", ctx->dcb);
@@ -453,50 +443,50 @@ static int hqx_decode_frame(AVCodecContext *avctx, void *data,
switch (ctx->format) {
case HQX_422:
avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
decode_func = hqx_decode_422;
ctx->decode_func = hqx_decode_422;
break;
case HQX_444:
avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
decode_func = hqx_decode_444;
ctx->decode_func = hqx_decode_444;
break;
case HQX_422A:
avctx->pix_fmt = AV_PIX_FMT_YUVA422P16;
decode_func = hqx_decode_422a;
ctx->decode_func = hqx_decode_422a;
break;
case HQX_444A:
avctx->pix_fmt = AV_PIX_FMT_YUVA444P16;
decode_func = hqx_decode_444a;
ctx->decode_func = hqx_decode_444a;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Invalid format: %d.\n", ctx->format);
return AVERROR_INVALIDDATA;
}

ret = ff_get_buffer(avctx, pic, 0);
ret = ff_get_buffer(avctx, ctx->pic, 0);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
return ret;
}

for (slice = 0; slice < 16; slice++) {
if (slice_off[slice] < HQX_HEADER_SIZE ||
slice_off[slice] >= slice_off[slice + 1] ||
slice_off[slice + 1] > data_size) {
if (ctx->slice_off[slice] < HQX_HEADER_SIZE ||
ctx->slice_off[slice] >= ctx->slice_off[slice + 1] ||
ctx->slice_off[slice + 1] > ctx->data_size) {
av_log(avctx, AV_LOG_ERROR, "Invalid slice size.\n");
break;
}
ret = init_get_bits(&gb, src + slice_off[slice],
(slice_off[slice + 1] - slice_off[slice]) * 8);
ret = init_get_bits(&gb, src + ctx->slice_off[slice],
(ctx->slice_off[slice + 1] - ctx->slice_off[slice]) * 8);
if (ret < 0)
return ret;
ret = decode_slice(ctx, pic, &gb, slice, decode_func);
ret = decode_slice(ctx, &gb, slice);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error decoding slice %d.\n", slice);
}
}

pic->key_frame = 1;
pic->pict_type = AV_PICTURE_TYPE_I;
ctx->pic->key_frame = 1;
ctx->pic->pict_type = AV_PICTURE_TYPE_I;

*got_picture_ptr = 1;



+ 13
- 0
libavcodec/hqx.h View File

@@ -22,6 +22,8 @@
#define AVCODEC_HQX_H

#include <stdint.h>

#include "libavutil/frame.h"
#include "libavutil/mem.h"
#include "get_bits.h"
#include "hqxdsp.h"
@@ -47,12 +49,23 @@ typedef struct HQXAC {
const HQXLUT *lut;
} HQXAC;

struct HQXContext;

typedef int (*mb_decode_func)(struct HQXContext *ctx, GetBitContext *gb, int x, int y);

typedef struct HQXContext {
HQXDSPContext hqxdsp;

AVFrame *pic;
mb_decode_func decode_func;

int format, dcb, width, height;
int interlaced;

uint8_t *src;
unsigned int data_size;
uint32_t slice_off[17];

DECLARE_ALIGNED(16, int16_t, block)[16][64];

VLC cbp_vlc;


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