mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
hqx: Convert to the new bitstream header
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Alexandra Hájková
Anton Khirnov
parent
c5e01d9170
commit
1df549bfa2
@ -24,8 +24,8 @@
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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#include "bitstream.h"
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#include "canopus.h"
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#include "get_bits.h"
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#include "internal.h"
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#include "hqx.h"
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@ -95,23 +95,23 @@ static inline void put_blocks(HQXContext *ctx, int plane,
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lsize * fields, block1, quant);
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}
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static inline void hqx_get_ac(GetBitContext *gb, const HQXAC *ac,
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static inline void hqx_get_ac(BitstreamContext *bc, const HQXAC *ac,
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int *run, int *lev)
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{
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int val;
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val = show_bits(gb, ac->lut_bits);
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val = bitstream_peek(bc, ac->lut_bits);
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if (ac->lut[val].bits == -1) {
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GetBitContext gb2 = *gb;
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skip_bits(&gb2, ac->lut_bits);
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val = ac->lut[val].lev + show_bits(&gb2, ac->extra_bits);
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BitstreamContext bc2 = *bc;
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bitstream_skip(&bc2, ac->lut_bits);
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val = ac->lut[val].lev + bitstream_peek(&bc2, ac->extra_bits);
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}
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*run = ac->lut[val].run;
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*lev = ac->lut[val].lev;
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skip_bits(gb, ac->lut[val].bits);
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bitstream_skip(bc, ac->lut[val].bits);
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}
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static int decode_block(GetBitContext *gb, VLC *vlc,
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static int decode_block(BitstreamContext *bc, VLC *vlc,
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const int *quants, int dcb,
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int16_t block[64], int *last_dc)
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{
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@ -120,14 +120,14 @@ static int decode_block(GetBitContext *gb, VLC *vlc,
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int run, lev, pos = 1;
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memset(block, 0, 64 * sizeof(*block));
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dc = get_vlc2(gb, vlc->table, HQX_DC_VLC_BITS, 2);
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dc = bitstream_read_vlc(bc, vlc->table, HQX_DC_VLC_BITS, 2);
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if (dc < 0)
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return AVERROR_INVALIDDATA;
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*last_dc += dc;
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block[0] = sign_extend(*last_dc << (12 - dcb), 12);
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q = quants[get_bits(gb, 2)];
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q = quants[bitstream_read(bc, 2)];
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if (q >= 128)
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ac_idx = HQX_AC_Q128;
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else if (q >= 64)
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@ -142,7 +142,7 @@ static int decode_block(GetBitContext *gb, VLC *vlc,
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ac_idx = HQX_AC_Q0;
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do {
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hqx_get_ac(gb, &ff_hqx_ac[ac_idx], &run, &lev);
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hqx_get_ac(bc, &ff_hqx_ac[ac_idx], &run, &lev);
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pos += run;
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if (pos >= 64)
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break;
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@ -155,24 +155,24 @@ static int decode_block(GetBitContext *gb, VLC *vlc,
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static int hqx_decode_422(HQXContext *ctx, int slice_no, int x, int y)
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{
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HQXSlice *slice = &ctx->slice[slice_no];
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GetBitContext *gb = &slice->gb;
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BitstreamContext *bc = &slice->bc;
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const int *quants;
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int flag;
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int last_dc;
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int i, ret;
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if (ctx->interlaced)
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flag = get_bits1(gb);
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flag = bitstream_read_bit(bc);
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else
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flag = 0;
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quants = hqx_quants[get_bits(gb, 4)];
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quants = hqx_quants[bitstream_read(bc, 4)];
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for (i = 0; i < 8; i++) {
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int vlc_index = ctx->dcb - 9;
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if (i == 0 || i == 4 || i == 6)
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last_dc = 0;
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ret = decode_block(gb, &ctx->dc_vlc[vlc_index], quants,
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ret = decode_block(bc, &ctx->dc_vlc[vlc_index], quants,
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ctx->dcb, slice->block[i], &last_dc);
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if (ret < 0)
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return ret;
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@ -189,14 +189,14 @@ static int hqx_decode_422(HQXContext *ctx, int slice_no, int x, int y)
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static int hqx_decode_422a(HQXContext *ctx, int slice_no, int x, int y)
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{
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HQXSlice *slice = &ctx->slice[slice_no];
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GetBitContext *gb = &slice->gb;
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BitstreamContext *bc = &slice->bc;
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const int *quants;
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int flag = 0;
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int last_dc;
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int i, ret;
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int cbp;
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cbp = get_vlc2(gb, ctx->cbp_vlc.table, ctx->cbp_vlc.bits, 1);
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cbp = bitstream_read_vlc(bc, ctx->cbp_vlc.table, ctx->cbp_vlc.bits, 1);
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for (i = 0; i < 12; i++)
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memset(slice->block[i], 0, sizeof(**slice->block) * 64);
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@ -204,9 +204,9 @@ static int hqx_decode_422a(HQXContext *ctx, int slice_no, int x, int y)
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slice->block[i][0] = -0x800;
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if (cbp) {
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if (ctx->interlaced)
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flag = get_bits1(gb);
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flag = bitstream_read_bit(bc);
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quants = hqx_quants[get_bits(gb, 4)];
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quants = hqx_quants[bitstream_read(bc, 4)];
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cbp |= cbp << 4; // alpha CBP
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if (cbp & 0x3) // chroma CBP - top
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@ -218,7 +218,7 @@ static int hqx_decode_422a(HQXContext *ctx, int slice_no, int x, int y)
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last_dc = 0;
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if (cbp & (1 << i)) {
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int vlc_index = ctx->dcb - 9;
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ret = decode_block(gb, &ctx->dc_vlc[vlc_index], quants,
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ret = decode_block(bc, &ctx->dc_vlc[vlc_index], quants,
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ctx->dcb, slice->block[i], &last_dc);
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if (ret < 0)
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return ret;
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@ -239,24 +239,24 @@ static int hqx_decode_422a(HQXContext *ctx, int slice_no, int x, int y)
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static int hqx_decode_444(HQXContext *ctx, int slice_no, int x, int y)
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{
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HQXSlice *slice = &ctx->slice[slice_no];
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GetBitContext *gb = &slice->gb;
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BitstreamContext *bc = &slice->bc;
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const int *quants;
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int flag;
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int last_dc;
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int i, ret;
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if (ctx->interlaced)
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flag = get_bits1(gb);
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flag = bitstream_read_bit(bc);
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else
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flag = 0;
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quants = hqx_quants[get_bits(gb, 4)];
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quants = hqx_quants[bitstream_read(bc, 4)];
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for (i = 0; i < 12; i++) {
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int vlc_index = ctx->dcb - 9;
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if (i == 0 || i == 4 || i == 8)
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last_dc = 0;
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ret = decode_block(gb, &ctx->dc_vlc[vlc_index], quants,
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ret = decode_block(bc, &ctx->dc_vlc[vlc_index], quants,
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ctx->dcb, slice->block[i], &last_dc);
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if (ret < 0)
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return ret;
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@ -275,14 +275,14 @@ static int hqx_decode_444(HQXContext *ctx, int slice_no, int x, int y)
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static int hqx_decode_444a(HQXContext *ctx, int slice_no, int x, int y)
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{
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HQXSlice *slice = &ctx->slice[slice_no];
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GetBitContext *gb = &slice->gb;
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BitstreamContext *bc = &slice->bc;
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const int *quants;
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int flag = 0;
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int last_dc;
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int i, ret;
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int cbp;
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cbp = get_vlc2(gb, ctx->cbp_vlc.table, ctx->cbp_vlc.bits, 1);
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cbp = bitstream_read_vlc(bc, ctx->cbp_vlc.table, ctx->cbp_vlc.bits, 1);
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for (i = 0; i < 16; i++)
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memset(slice->block[i], 0, sizeof(**slice->block) * 64);
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@ -290,9 +290,9 @@ static int hqx_decode_444a(HQXContext *ctx, int slice_no, int x, int y)
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slice->block[i][0] = -0x800;
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if (cbp) {
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if (ctx->interlaced)
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flag = get_bits1(gb);
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flag = bitstream_read_bit(bc);
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quants = hqx_quants[get_bits(gb, 4)];
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quants = hqx_quants[bitstream_read(bc, 4)];
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cbp |= cbp << 4; // alpha CBP
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cbp |= cbp << 8; // chroma CBP
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@ -301,7 +301,7 @@ static int hqx_decode_444a(HQXContext *ctx, int slice_no, int x, int y)
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last_dc = 0;
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if (cbp & (1 << i)) {
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int vlc_index = ctx->dcb - 9;
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ret = decode_block(gb, &ctx->dc_vlc[vlc_index], quants,
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ret = decode_block(bc, &ctx->dc_vlc[vlc_index], quants,
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ctx->dcb, slice->block[i], &last_dc);
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if (ret < 0)
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return ret;
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@ -392,9 +392,9 @@ static int decode_slice_thread(AVCodecContext *avctx, void *arg,
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return AVERROR_INVALIDDATA;
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}
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ret = init_get_bits8(&ctx->slice[slice_no].gb,
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ctx->src + slice_off[slice_no],
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slice_off[slice_no + 1] - slice_off[slice_no]);
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ret = bitstream_init8(&ctx->slice[slice_no].bc,
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ctx->src + slice_off[slice_no],
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slice_off[slice_no + 1] - slice_off[slice_no]);
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if (ret < 0)
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return ret;
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@ -25,7 +25,8 @@
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#include "libavutil/frame.h"
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#include "libavutil/mem.h"
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#include "get_bits.h"
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#include "bitstream.h"
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#include "hqxdsp.h"
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enum HQXACMode {
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@ -55,7 +56,7 @@ typedef int (*mb_decode_func)(struct HQXContext *ctx,
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int slice_no, int x, int y);
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typedef struct HQXSlice {
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GetBitContext gb;
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BitstreamContext bc;
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DECLARE_ALIGNED(16, int16_t, block)[16][64];
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} HQXSlice;
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