implemented Id Quake II CIN support
Originally committed as revision 2339 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson
parent
a686caf03d
commit
4120a53a86
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@ -6,6 +6,7 @@ version <next>:
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- Cinepak decoder
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- Sega FILM (CPK) file demuxer
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- Westwood multimedia support (VQA/AUD file demuxer, audio decoder)
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- Id Quake II CIN playback support
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version 0.4.8:
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@ -633,6 +633,8 @@ library:
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@tab used in many Sega Saturn console games
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@item Westwood Studios VQA/AUD @tab @tab X
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@tab Multimedia formats used in Westwood Studios games
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@item Id Cinematic (.cin) @tab @tab X
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@tab Used in Quake II
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@end multitable
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@code{X} means that the encoding (resp. decoding) is supported.
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@ -692,6 +694,8 @@ following image formats are supported:
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@item Cinepak @tab @tab X
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@item Microsoft RLE @tab @tab X
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@item Microsoft Video-1 @tab @tab X
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@item Westwood VQA @tab @tab X
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@item Id Cinematic Video @tab @tab X @tab used in Quake II
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@end multitable
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@code{X} means that the encoding (resp. decoding) is supported.
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@ -18,7 +18,7 @@ OBJS= common.o utils.o mem.o allcodecs.o \
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fft.o mdct.o mace.o huffyuv.o cyuv.o opts.o raw.o h264.o golomb.o \
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vp3.o asv1.o 4xm.o cabac.o ffv1.o ra144.o ra288.o vcr1.o cljr.o \
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roqvideo.o dpcm.o interplayvideo.o xan.o rpza.o cinepak.o msrle.o \
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msvideo1.o vqavideo.o
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msvideo1.o vqavideo.o idcinvideo.o
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ifeq ($(AMR_NB),yes)
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ifeq ($(AMR_NB_FIXED),yes)
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@ -128,6 +128,7 @@ void avcodec_register_all(void)
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register_avcodec(&msrle_decoder);
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register_avcodec(&msvideo1_decoder);
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register_avcodec(&vqa_decoder);
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register_avcodec(&idcin_decoder);
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#ifdef CONFIG_AC3
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register_avcodec(&ac3_decoder);
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#endif
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@ -79,6 +79,7 @@ enum CodecID {
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CODEC_ID_WS_VQA,
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CODEC_ID_MSRLE,
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CODEC_ID_MSVIDEO1,
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CODEC_ID_IDCIN,
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/* various pcm "codecs" */
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CODEC_ID_PCM_S16LE,
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@ -1433,6 +1434,7 @@ extern AVCodec cinepak_decoder;
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extern AVCodec msrle_decoder;
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extern AVCodec msvideo1_decoder;
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extern AVCodec vqa_decoder;
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extern AVCodec idcin_decoder;
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extern AVCodec ra_144_decoder;
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extern AVCodec ra_288_decoder;
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extern AVCodec roq_dpcm_decoder;
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@ -0,0 +1,278 @@
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/*
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* Id Quake II CIN Video Decoder
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* Copyright (C) 2003 the ffmpeg project
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/**
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* @file idcinvideo.c
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* Id Quake II Cin Video Decoder by Dr. Tim Ferguson
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* For more information about the Id CIN format, visit:
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* http://www.csse.monash.edu.au/~timf/
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*
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* This video decoder outputs PAL8 colorspace data.
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*
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* Id CIN video is purely Huffman-coded, intraframe-only codec. It achieves
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* a little more compression by exploiting the fact that adjacent pixels
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* tend to be similar.
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*
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* Note that this decoder could use ffmpeg's optimized VLC facilities
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* rather than naive, tree-based Huffman decoding. However, there are 256
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* Huffman tables. Plus, the VLC bit coding order is right -> left instead
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* or left -> right, so all of the bits would have to be reversed. Further,
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* the original Quake II implementation likely used a similar naive
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* decoding algorithm and it worked fine on much lower spec machines.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "common.h"
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#include "avcodec.h"
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#include "dsputil.h"
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#define HUFFMAN_TABLE_SIZE 64 * 1024
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#define HUF_TOKENS 256
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#define PALETTE_COUNT 256
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typedef struct
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{
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int count;
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unsigned char used;
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int children[2];
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} hnode_t;
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typedef struct IdcinContext {
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AVCodecContext *avctx;
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DSPContext dsp;
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AVFrame frame;
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unsigned char *buf;
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int size;
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unsigned char palette[PALETTE_COUNT * 4];
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hnode_t huff_nodes[256][HUF_TOKENS*2];
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int num_huff_nodes[256];
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} IdcinContext;
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/*
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* Find the lowest probability node in a Huffman table, and mark it as
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* being assigned to a higher probability.
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* Returns the node index of the lowest unused node, or -1 if all nodes
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* are used.
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*/
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static int huff_smallest_node(hnode_t *hnodes, int num_hnodes) {
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int i;
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int best, best_node;
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best = 99999999;
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best_node = -1;
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for(i = 0; i < num_hnodes; i++) {
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if(hnodes[i].used)
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continue;
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if(!hnodes[i].count)
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continue;
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if(hnodes[i].count < best) {
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best = hnodes[i].count;
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best_node = i;
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}
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}
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if(best_node == -1)
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return -1;
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hnodes[best_node].used = 1;
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return best_node;
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}
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/*
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* Build the Huffman tree using the generated/loaded probabilities histogram.
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*
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* On completion:
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* huff_nodes[prev][i < HUF_TOKENS] - are the nodes at the base of the tree.
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* huff_nodes[prev][i >= HUF_TOKENS] - are used to construct the tree.
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* num_huff_nodes[prev] - contains the index to the root node of the tree.
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* That is: huff_nodes[prev][num_huff_nodes[prev]] is the root node.
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*/
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static void huff_build_tree(IdcinContext *s, int prev) {
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hnode_t *node, *hnodes;
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int num_hnodes, i;
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num_hnodes = HUF_TOKENS;
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hnodes = s->huff_nodes[prev];
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for(i = 0; i < HUF_TOKENS * 2; i++)
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hnodes[i].used = 0;
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while (1) {
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node = &hnodes[num_hnodes]; /* next free node */
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/* pick two lowest counts */
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node->children[0] = huff_smallest_node(hnodes, num_hnodes);
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if(node->children[0] == -1)
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break; /* reached the root node */
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node->children[1] = huff_smallest_node(hnodes, num_hnodes);
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if(node->children[1] == -1)
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break; /* reached the root node */
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/* combine nodes probability for new node */
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node->count = hnodes[node->children[0]].count +
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hnodes[node->children[1]].count;
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num_hnodes++;
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}
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s->num_huff_nodes[prev] = num_hnodes - 1;
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}
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static int idcin_decode_init(AVCodecContext *avctx)
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{
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IdcinContext *s = (IdcinContext *)avctx->priv_data;
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int i, j, histogram_index = 0;
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unsigned char *histograms;
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s->avctx = avctx;
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avctx->pix_fmt = PIX_FMT_PAL8;
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avctx->has_b_frames = 0;
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dsputil_init(&s->dsp, avctx);
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/* make sure the Huffman tables make it */
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if (s->avctx->extradata_size != HUFFMAN_TABLE_SIZE) {
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printf(" Id CIN video: expected extradata size of %d\n", HUFFMAN_TABLE_SIZE);
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return -1;
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}
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/* build the 256 Huffman decode trees */
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histograms = (unsigned char *)s->avctx->extradata;
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for (i = 0; i < 256; i++) {
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for(j = 0; j < HUF_TOKENS; j++)
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s->huff_nodes[i][j].count = histograms[histogram_index++];
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huff_build_tree(s, i);
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}
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s->frame.data[0] = NULL;
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return 0;
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}
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static void idcin_decode_vlcs(IdcinContext *s)
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{
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hnode_t *hnodes;
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long x, y;
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int prev;
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unsigned char v = 0;
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int bit_pos, node_num, dat_pos;
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prev = bit_pos = dat_pos = 0;
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for (y = 0; y < (s->frame.linesize[0] * s->avctx->height);
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y += s->frame.linesize[0]) {
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for (x = y; x < y + s->avctx->width; x++) {
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node_num = s->num_huff_nodes[prev];
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hnodes = s->huff_nodes[prev];
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while(node_num >= HUF_TOKENS) {
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if(!bit_pos) {
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if(dat_pos > s->size) {
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printf("Huffman decode error.\n");
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return;
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}
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bit_pos = 8;
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v = s->buf[dat_pos++];
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}
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node_num = hnodes[node_num].children[v & 0x01];
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v = v >> 1;
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bit_pos--;
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}
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s->frame.data[0][x] = node_num;
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prev = node_num;
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}
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}
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}
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static int idcin_decode_frame(AVCodecContext *avctx,
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void *data, int *data_size,
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uint8_t *buf, int buf_size)
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{
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IdcinContext *s = (IdcinContext *)avctx->priv_data;
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AVPaletteControl *palette_control =
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(AVPaletteControl *)avctx->extradata;
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int i;
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unsigned int *palette32;
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int palette_index = 0;
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unsigned char r, g, b;
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s->buf = buf;
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s->size = buf_size;
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if (palette_control->palette_changed) {
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palette32 = (unsigned int *)s->palette;
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for (i = 0; i < PALETTE_COUNT; i++) {
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r = palette_control->palette[palette_index++] * 1;
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g = palette_control->palette[palette_index++] * 1;
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b = palette_control->palette[palette_index++] * 1;
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palette32[i] = (r << 16) | (g << 8) | (b);
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}
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palette_control->palette_changed = 0;
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}
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if (s->frame.data[0])
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avctx->release_buffer(avctx, &s->frame);
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if (avctx->get_buffer(avctx, &s->frame)) {
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printf (" Id CIN Video: get_buffer() failed\n");
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return -1;
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}
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idcin_decode_vlcs(s);
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/* make the palette available on the way out */
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memcpy(s->frame.data[1], s->palette, PALETTE_COUNT * 4);
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*data_size = sizeof(AVFrame);
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*(AVFrame*)data = s->frame;
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/* report that the buffer was completely consumed */
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return buf_size;
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}
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static int idcin_decode_end(AVCodecContext *avctx)
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{
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IdcinContext *s = (IdcinContext *)avctx->priv_data;
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if (s->frame.data[0])
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avctx->release_buffer(avctx, &s->frame);
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return 0;
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}
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AVCodec idcin_decoder = {
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"idcinvideo",
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CODEC_TYPE_VIDEO,
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CODEC_ID_IDCIN,
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sizeof(IdcinContext),
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idcin_decode_init,
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NULL,
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idcin_decode_end,
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idcin_decode_frame,
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CODEC_CAP_DR1,
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};
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@ -15,7 +15,7 @@ PPOBJS=
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OBJS+=mpeg.o mpegts.o mpegtsenc.o ffm.o crc.o img.o raw.o rm.o \
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avienc.o avidec.o wav.o swf.o au.o gif.o mov.o mpjpeg.o dv.o \
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yuv4mpeg.o 4xm.o flvenc.o flvdec.o movenc.o psxstr.o idroq.o ipmovie.o \
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nut.o wc3movie.o mp3.o westwood.o segafilm.o
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nut.o wc3movie.o mp3.o westwood.o segafilm.o idcin.o
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ifeq ($(CONFIG_RISKY),yes)
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OBJS+= asf.o
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@ -58,6 +58,7 @@ void av_register_all(void)
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wc3_init();
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westwood_init();
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film_init();
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idcin_init();
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#if defined(AMR_NB) || defined(AMR_NB_FIXED) || defined(AMR_WB)
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amr_init();
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@ -412,6 +412,9 @@ int westwood_init(void);
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/* segafilm.c */
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int film_init(void);
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/* idcin.c */
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int idcin_init(void);
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#include "rtp.h"
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#include "rtsp.h"
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@ -0,0 +1,313 @@
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/*
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* Id Quake II CIN File Demuxer
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* Copyright (c) 2003 The ffmpeg Project
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
|
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* License along with this library; if not, write to the Free Software
|
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file idcin.c
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* Id Quake II CIN file demuxer by Mike Melanson (melanson@pcisys.net)
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* For more information about the Id CIN format, visit:
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* http://www.csse.monash.edu.au/~timf/
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*
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* CIN is a somewhat quirky and ill-defined format. Here are some notes
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* for anyone trying to understand the technical details of this format:
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*
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* The format has no definite file signature. This is problematic for a
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* general-purpose media player that wants to automatically detect file
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* types. However, a CIN file does start with 5 32-bit numbers that
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* specify audio and video parameters. This demuxer gets around the lack
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* of file signature by performing sanity checks on those parameters.
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* Probabalistically, this is a reasonable solution since the number of
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* valid combinations of the 5 parameters is a very small subset of the
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* total 160-bit number space.
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*
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* Refer to the function idcin_probe() for the precise A/V parameters
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* that this demuxer allows.
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*
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* Next, each audio and video frame has a duration of 1/14 sec. If the
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* audio sample rate is a multiple of the common frequency 22050 Hz it will
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* divide evenly by 14. However, if the sample rate is 11025 Hz:
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* 11025 (samples/sec) / 14 (frames/sec) = 787.5 (samples/frame)
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* The way the CIN stores audio in this case is by storing 787 sample
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* frames in the first audio frame and 788 sample frames in the second
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* audio frame. Therefore, the total number of bytes in an audio frame
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* is given as:
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* audio frame #0: 787 * (bytes/sample) * (# channels) bytes in frame
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* audio frame #1: 788 * (bytes/sample) * (# channels) bytes in frame
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* audio frame #2: 787 * (bytes/sample) * (# channels) bytes in frame
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* audio frame #3: 788 * (bytes/sample) * (# channels) bytes in frame
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*
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* Finally, not all Id CIN creation tools agree on the resolution of the
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* color palette, apparently. Some creation tools specify red, green, and
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* blue palette components in terms of 6-bit VGA color DAC values which
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* range from 0..63. Other tools specify the RGB components as full 8-bit
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* values that range from 0..255. Since there are no markers in the file to
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* differentiate between the two variants, this demuxer uses the following
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* heuristic:
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* - load the 768 palette bytes from disk
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* - assume that they will need to be shifted left by 2 bits to
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* transform them from 6-bit values to 8-bit values
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* - scan through all 768 palette bytes
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* - if any bytes exceed 63, do not shift the bytes at all before
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* transmitting them to the video decoder
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*/
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#include "avformat.h"
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#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
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#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
|
||||
(((uint8_t*)(x))[2] << 16) | \
|
||||
(((uint8_t*)(x))[1] << 8) | \
|
||||
((uint8_t*)(x))[0])
|
||||
|
||||
#define HUFFMAN_TABLE_SIZE (64 * 1024)
|
||||
#define FRAME_PTS_INC (90000 / 14)
|
||||
|
||||
typedef struct IdcinDemuxContext {
|
||||
int video_stream_index;
|
||||
int audio_stream_index;
|
||||
int audio_chunk_size1;
|
||||
int audio_chunk_size2;
|
||||
|
||||
/* demux state variables */
|
||||
int current_audio_chunk;
|
||||
int next_chunk_is_video;
|
||||
int audio_present;
|
||||
|
||||
int64_t pts;
|
||||
|
||||
/* keep reference to extradata but never free it */
|
||||
void *extradata;
|
||||
} IdcinDemuxContext;
|
||||
|
||||
static int idcin_probe(AVProbeData *p)
|
||||
{
|
||||
unsigned int number;
|
||||
|
||||
/*
|
||||
* This is what you could call a "probabilistic" file check: Id CIN
|
||||
* files don't have a definite file signature. In lieu of such a marker,
|
||||
* perform sanity checks on the 5 32-bit header fields:
|
||||
* width, height: greater than 0, less than or equal to 1024
|
||||
* audio sample rate: greater than or equal to 8000, less than or
|
||||
* equal to 48000, or 0 for no audio
|
||||
* audio sample width (bytes/sample): 0 for no audio, or 1 or 2
|
||||
* audio channels: 0 for no audio, or 1 or 2
|
||||
*/
|
||||
|
||||
/* cannot proceed without 20 bytes */
|
||||
if (p->buf_size < 20)
|
||||
return 0;
|
||||
|
||||
/* check the video width */
|
||||
number = LE_32(&p->buf[0]);
|
||||
if ((number == 0) || (number > 1024))
|
||||
return 0;
|
||||
|
||||
/* check the video height */
|
||||
number = LE_32(&p->buf[4]);
|
||||
if ((number == 0) || (number > 1024))
|
||||
return 0;
|
||||
|
||||
/* check the audio sample rate */
|
||||
number = LE_32(&p->buf[8]);
|
||||
if ((number != 0) && ((number < 8000) | (number > 48000)))
|
||||
return 0;
|
||||
|
||||
/* check the audio bytes/sample */
|
||||
number = LE_32(&p->buf[12]);
|
||||
if (number > 2)
|
||||
return 0;
|
||||
|
||||
/* check the audio channels */
|
||||
number = LE_32(&p->buf[16]);
|
||||
if (number > 2)
|
||||
return 0;
|
||||
|
||||
/* return half certainly since this check is a bit sketchy */
|
||||
return AVPROBE_SCORE_MAX / 2;
|
||||
}
|
||||
|
||||
static int idcin_read_header(AVFormatContext *s,
|
||||
AVFormatParameters *ap)
|
||||
{
|
||||
ByteIOContext *pb = &s->pb;
|
||||
IdcinDemuxContext *idcin = (IdcinDemuxContext *)s->priv_data;
|
||||
AVStream *st;
|
||||
unsigned int width, height;
|
||||
unsigned int sample_rate, bytes_per_sample, channels;
|
||||
|
||||
/* get the 5 header parameters */
|
||||
width = get_le32(pb);
|
||||
height = get_le32(pb);
|
||||
sample_rate = get_le32(pb);
|
||||
bytes_per_sample = get_le32(pb);
|
||||
channels = get_le32(pb);
|
||||
|
||||
st = av_new_stream(s, 0);
|
||||
if (!st)
|
||||
return AVERROR_NOMEM;
|
||||
idcin->video_stream_index = st->index;
|
||||
st->codec.codec_type = CODEC_TYPE_VIDEO;
|
||||
st->codec.codec_id = CODEC_ID_IDCIN;
|
||||
st->codec.codec_tag = 0; /* no fourcc */
|
||||
st->codec.width = width;
|
||||
st->codec.height = height;
|
||||
|
||||
/* load up the Huffman tables into extradata */
|
||||
st->codec.extradata_size = HUFFMAN_TABLE_SIZE;
|
||||
st->codec.extradata = av_malloc(HUFFMAN_TABLE_SIZE);
|
||||
if (get_buffer(pb, st->codec.extradata, HUFFMAN_TABLE_SIZE) !=
|
||||
HUFFMAN_TABLE_SIZE)
|
||||
return -EIO;
|
||||
/* save a reference in order to transport the palette */
|
||||
idcin->extradata = st->codec.extradata;
|
||||
|
||||
/* if sample rate is 0, assume no audio */
|
||||
if (sample_rate) {
|
||||
idcin->audio_present = 1;
|
||||
st = av_new_stream(s, 0);
|
||||
if (!st)
|
||||
return AVERROR_NOMEM;
|
||||
idcin->audio_stream_index = st->index;
|
||||
st->codec.codec_type = CODEC_TYPE_AUDIO;
|
||||
st->codec.codec_tag = 1;
|
||||
st->codec.channels = channels;
|
||||
st->codec.sample_rate = sample_rate;
|
||||
st->codec.bits_per_sample = bytes_per_sample * 8;
|
||||
st->codec.bit_rate = sample_rate * bytes_per_sample * 8 * channels;
|
||||
st->codec.block_align = bytes_per_sample * channels;
|
||||
if (bytes_per_sample == 1)
|
||||
st->codec.codec_id = CODEC_ID_PCM_U8;
|
||||
else
|
||||
st->codec.codec_id = CODEC_ID_PCM_S16LE;
|
||||
|
||||
if (sample_rate % 14 != 0) {
|
||||
idcin->audio_chunk_size1 = (sample_rate / 14) *
|
||||
bytes_per_sample * channels;
|
||||
idcin->audio_chunk_size2 = (sample_rate / 14 + 1) *
|
||||
bytes_per_sample * channels;
|
||||
} else {
|
||||
idcin->audio_chunk_size1 = idcin->audio_chunk_size2 =
|
||||
(sample_rate / 14) * bytes_per_sample * channels;
|
||||
}
|
||||
idcin->current_audio_chunk = 0;
|
||||
} else
|
||||
idcin->audio_present = 1;
|
||||
|
||||
idcin->next_chunk_is_video = 1;
|
||||
idcin->pts = 0;
|
||||
|
||||
/* set the pts reference (1 pts = 1/90000) */
|
||||
s->pts_num = 1;
|
||||
s->pts_den = 90000;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int idcin_read_packet(AVFormatContext *s,
|
||||
AVPacket *pkt)
|
||||
{
|
||||
int ret;
|
||||
unsigned int command;
|
||||
unsigned int chunk_size;
|
||||
IdcinDemuxContext *idcin = (IdcinDemuxContext *)s->priv_data;
|
||||
ByteIOContext *pb = &s->pb;
|
||||
AVPaletteControl *palette_control = (AVPaletteControl *)idcin->extradata;
|
||||
int i;
|
||||
int palette_scale;
|
||||
|
||||
if (url_feof(&s->pb))
|
||||
return -EIO;
|
||||
|
||||
if (idcin->next_chunk_is_video) {
|
||||
command = get_le32(pb);
|
||||
if (command == 2) {
|
||||
return -EIO;
|
||||
} else if (command == 1) {
|
||||
/* trigger a palette change */
|
||||
palette_control->palette_changed = 1;
|
||||
if (get_buffer(pb, palette_control->palette, 768) != 768)
|
||||
return -EIO;
|
||||
/* scale the palette as necessary */
|
||||
palette_scale = 2;
|
||||
for (i = 0; i < 768; i++)
|
||||
if (palette_control->palette[i] > 63) {
|
||||
palette_scale = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
if (palette_scale)
|
||||
for (i = 0; i < 768; i++)
|
||||
palette_control->palette[i] <<= palette_scale;
|
||||
}
|
||||
|
||||
chunk_size = get_le32(pb);
|
||||
/* skip the number of decoded bytes (always equal to width * height) */
|
||||
url_fseek(pb, 4, SEEK_CUR);
|
||||
chunk_size -= 4;
|
||||
if (av_new_packet(pkt, chunk_size))
|
||||
ret = -EIO;
|
||||
pkt->stream_index = idcin->video_stream_index;
|
||||
pkt->pts = idcin->pts;
|
||||
ret = get_buffer(pb, pkt->data, chunk_size);
|
||||
if (ret != chunk_size)
|
||||
ret = -EIO;
|
||||
} else {
|
||||
/* send out the audio chunk */
|
||||
if (idcin->current_audio_chunk)
|
||||
chunk_size = idcin->audio_chunk_size2;
|
||||
else
|
||||
chunk_size = idcin->audio_chunk_size1;
|
||||
if (av_new_packet(pkt, chunk_size))
|
||||
return -EIO;
|
||||
pkt->stream_index = idcin->audio_stream_index;
|
||||
pkt->pts = idcin->pts;
|
||||
ret = get_buffer(&s->pb, pkt->data, chunk_size);
|
||||
if (ret != chunk_size)
|
||||
ret = -EIO;
|
||||
|
||||
idcin->current_audio_chunk ^= 1;
|
||||
idcin->pts += FRAME_PTS_INC;
|
||||
}
|
||||
|
||||
if (idcin->audio_present)
|
||||
idcin->next_chunk_is_video ^= 1;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int idcin_read_close(AVFormatContext *s)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static AVInputFormat idcin_iformat = {
|
||||
"idcin",
|
||||
"Id CIN format",
|
||||
sizeof(IdcinDemuxContext),
|
||||
idcin_probe,
|
||||
idcin_read_header,
|
||||
idcin_read_packet,
|
||||
idcin_read_close,
|
||||
};
|
||||
|
||||
int idcin_init(void)
|
||||
{
|
||||
av_register_input_format(&idcin_iformat);
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue