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Code Issues Releases Activity

magicyuv: Convert to the new bitstream reader

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This commit is contained in:
Diego Biurrun 2016-06-21 14:35:53 +02:00
parent b061f298f7
commit 2e0e150144
1 changed files with 17 additions and 16 deletions
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33
libavcodec/magicyuv.c
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@ -22,14 +22,15 @@
#include <stdlib.h>
#include <string.h>
#include "../libavutil/pixdesc.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "bitstream.h"
#include "bytestream.h"
#include "get_bits.h"
#include "huffyuvdsp.h"
#include "internal.h"
#include "thread.h"
#include "vlc.h"
typedef struct Slice {
uint32_t start;
@ -108,7 +109,7 @@ static int magy_decode_slice(AVCodecContext *avctx, void *tdata,
int interlaced = s->interlaced;
AVFrame *p = s->p;
int i, k, x;
GetBitContext gb;
BitstreamContext bc;
uint8_t *dst;
for (i = 0; i < s->planes; i++) {
@ -119,20 +120,20 @@ static int magy_decode_slice(AVCodecContext *avctx, void *tdata,
ptrdiff_t fake_stride = p->linesize[i] * (1 + interlaced);
ptrdiff_t stride = p->linesize[i];
int flags, pred;
int ret = init_get_bits8(&gb, s->buf + s->slices[i][j].start,
s->slices[i][j].size);
int ret = bitstream_init8(&bc, s->buf + s->slices[i][j].start,
s->slices[i][j].size);
if (ret < 0)
return ret;
flags = get_bits(&gb, 8);
pred = get_bits(&gb, 8);
flags = bitstream_read(&bc, 8);
pred = bitstream_read(&bc, 8);
dst = p->data[i] + j * sheight * stride;
if (flags & 1) {
for (k = 0; k < height; k++) {
for (x = 0; x < width; x++)
dst[x] = get_bits(&gb, 8);
dst[x] = bitstream_read(&bc, 8);
dst += stride;
}
@ -140,10 +141,10 @@ static int magy_decode_slice(AVCodecContext *avctx, void *tdata,
for (k = 0; k < height; k++) {
for (x = 0; x < width; x++) {
int pix;
if (get_bits_left(&gb) <= 0)
if (bitstream_bits_left(&bc) <= 0)
return AVERROR_INVALIDDATA;
pix = get_vlc2(&gb, s->vlc[i].table, s->vlc[i].bits, 3);
pix = bitstream_read_vlc(&bc, s->vlc[i].table, s->vlc[i].bits, 3);
if (pix < 0)
return AVERROR_INVALIDDATA;
@ -238,7 +239,7 @@ static int magy_decode_frame(AVCodecContext *avctx, void *data,
ThreadFrame frame = { .f = data };
AVFrame *p = data;
GetByteContext gbyte;
GetBitContext gbit;
BitstreamContext bc;
uint32_t first_offset, offset, next_offset, header_size, slice_width;
int width, height, format, version, table_size;
int ret, i, j, k;
@ -370,16 +371,16 @@ static int magy_decode_frame(AVCodecContext *avctx, void *data,
if (table_size < 2)
return AVERROR_INVALIDDATA;
ret = init_get_bits8(&gbit, avpkt->data + bytestream2_tell(&gbyte), table_size);
ret = bitstream_init8(&bc, avpkt->data + bytestream2_tell(&gbyte), table_size);
if (ret < 0)
return ret;
memset(s->len, 0, sizeof(s->len));
j = i = 0;
while (get_bits_left(&gbit) >= 8) {
int b = get_bits(&gbit, 4);
int x = get_bits(&gbit, 4);
int l = get_bitsz(&gbit, b) + 1;
while (bitstream_bits_left(&bc) >= 8) {
int b = bitstream_read(&bc, 4);
int x = bitstream_read(&bc, 4);
int l = bitstream_read(&bc, b) + 1;
for (k = 0; k < l; k++)
if (j + k < 256)