/*
* id Quake II CIN Video Decoder
- * Copyright (C) 2003 the ffmpeg project
+ * Copyright (C) 2003 The FFmpeg project
*
* This file is part of Libav.
*
#include <string.h>
#include "avcodec.h"
+#include "internal.h"
#include "libavutil/internal.h"
#define HUFFMAN_TABLE_SIZE 64 * 1024
#define HUF_TOKENS 256
#define PALETTE_COUNT 256
-typedef struct
-{
+typedef struct hnode {
int count;
unsigned char used;
int children[2];
typedef struct IdcinContext {
AVCodecContext *avctx;
- AVFrame frame;
const unsigned char *buf;
int size;
unsigned char *histograms;
s->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_PAL8;
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
/* make sure the Huffman tables make it */
if (s->avctx->extradata_size != HUFFMAN_TABLE_SIZE) {
huff_build_tree(s, i);
}
- s->frame.data[0] = NULL;
-
return 0;
}
-static void idcin_decode_vlcs(IdcinContext *s)
+static void idcin_decode_vlcs(IdcinContext *s, AVFrame *frame)
{
hnode *hnodes;
long x, y;
int bit_pos, node_num, dat_pos;
prev = bit_pos = dat_pos = 0;
- for (y = 0; y < (s->frame.linesize[0] * s->avctx->height);
- y += s->frame.linesize[0]) {
+ for (y = 0; y < (frame->linesize[0] * s->avctx->height);
+ y += frame->linesize[0]) {
for (x = y; x < y + s->avctx->width; x++) {
node_num = s->num_huff_nodes[prev];
hnodes = s->huff_nodes[prev];
bit_pos--;
}
- s->frame.data[0][x] = node_num;
+ frame->data[0][x] = node_num;
prev = node_num;
}
}
}
static int idcin_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
+ void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
IdcinContext *s = avctx->priv_data;
const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL);
+ AVFrame *frame = data;
+ int ret;
s->buf = buf;
s->size = buf_size;
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
-
- if (avctx->get_buffer(avctx, &s->frame)) {
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, " id CIN Video: get_buffer() failed\n");
- return -1;
+ return ret;
}
- idcin_decode_vlcs(s);
+ idcin_decode_vlcs(s, frame);
if (pal) {
- s->frame.palette_has_changed = 1;
+ frame->palette_has_changed = 1;
memcpy(s->pal, pal, AVPALETTE_SIZE);
}
/* make the palette available on the way out */
- memcpy(s->frame.data[1], s->pal, AVPALETTE_SIZE);
+ memcpy(frame->data[1], s->pal, AVPALETTE_SIZE);
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = s->frame;
+ *got_frame = 1;
/* report that the buffer was completely consumed */
return buf_size;
}
-static av_cold int idcin_decode_end(AVCodecContext *avctx)
-{
- IdcinContext *s = avctx->priv_data;
-
- if (s->frame.data[0])
- avctx->release_buffer(avctx, &s->frame);
-
- return 0;
-}
-
AVCodec ff_idcin_decoder = {
.name = "idcinvideo",
+ .long_name = NULL_IF_CONFIG_SMALL("id Quake II CIN video"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_IDCIN,
.priv_data_size = sizeof(IdcinContext),
.init = idcin_decode_init,
- .close = idcin_decode_end,
.decode = idcin_decode_frame,
- .capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("id Quake II CIN video"),
+ .capabilities = AV_CODEC_CAP_DR1,
};