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Diffstat (limited to 'contrib/ffmpeg/libavformat/sierravmd.c')
-rw-r--r--contrib/ffmpeg/libavformat/sierravmd.c302
1 files changed, 0 insertions, 302 deletions
diff --git a/contrib/ffmpeg/libavformat/sierravmd.c b/contrib/ffmpeg/libavformat/sierravmd.c
deleted file mode 100644
index 3e1c8597d..000000000
--- a/contrib/ffmpeg/libavformat/sierravmd.c
+++ /dev/null
@@ -1,302 +0,0 @@
-/*
- * Sierra VMD Format Demuxer
- * Copyright (c) 2004 The ffmpeg Project
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file sierravmd.c
- * Sierra VMD file demuxer
- * by Vladimir "VAG" Gneushev (vagsoft at mail.ru)
- * for more information on the Sierra VMD file format, visit:
- * http://www.pcisys.net/~melanson/codecs/
- */
-
-#include "avformat.h"
-
-#define VMD_HEADER_SIZE 0x0330
-#define BYTES_PER_FRAME_RECORD 16
-
-typedef struct {
- int stream_index;
- offset_t frame_offset;
- unsigned int frame_size;
- int64_t pts;
- int keyframe;
- unsigned char frame_record[BYTES_PER_FRAME_RECORD];
-} vmd_frame_t;
-
-typedef struct VmdDemuxContext {
- int video_stream_index;
- int audio_stream_index;
-
- unsigned int frame_count;
- unsigned int frames_per_block;
- vmd_frame_t *frame_table;
- unsigned int current_frame;
-
- int sample_rate;
- int64_t audio_sample_counter;
- int skiphdr;
-
- unsigned char vmd_header[VMD_HEADER_SIZE];
-} VmdDemuxContext;
-
-static int vmd_probe(AVProbeData *p)
-{
- if (p->buf_size < 2)
- return 0;
-
- /* check if the first 2 bytes of the file contain the appropriate size
- * of a VMD header chunk */
- if (AV_RL16(&p->buf[0]) != VMD_HEADER_SIZE - 2)
- return 0;
-
- /* only return half certainty since this check is a bit sketchy */
- return AVPROBE_SCORE_MAX / 2;
-}
-
-static int vmd_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- VmdDemuxContext *vmd = (VmdDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- AVStream *st, *vst;
- unsigned int toc_offset;
- unsigned char *raw_frame_table;
- int raw_frame_table_size;
- offset_t current_offset;
- int i, j;
- unsigned int total_frames;
- int64_t pts_inc = 1;
- int64_t current_video_pts = 0, current_audio_pts = 0;
- unsigned char chunk[BYTES_PER_FRAME_RECORD];
- int num, den;
- int sound_buffers;
-
- /* fetch the main header, including the 2 header length bytes */
- url_fseek(pb, 0, SEEK_SET);
- if (get_buffer(pb, vmd->vmd_header, VMD_HEADER_SIZE) != VMD_HEADER_SIZE)
- return AVERROR_IO;
-
- /* start up the decoders */
- vst = av_new_stream(s, 0);
- if (!vst)
- return AVERROR_NOMEM;
- av_set_pts_info(vst, 33, 1, 10);
- vmd->video_stream_index = vst->index;
- vst->codec->codec_type = CODEC_TYPE_VIDEO;
- vst->codec->codec_id = CODEC_ID_VMDVIDEO;
- vst->codec->codec_tag = 0; /* no fourcc */
- vst->codec->width = AV_RL16(&vmd->vmd_header[12]);
- vst->codec->height = AV_RL16(&vmd->vmd_header[14]);
- vst->codec->extradata_size = VMD_HEADER_SIZE;
- vst->codec->extradata = av_mallocz(VMD_HEADER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
- memcpy(vst->codec->extradata, vmd->vmd_header, VMD_HEADER_SIZE);
-
- /* if sample rate is 0, assume no audio */
- vmd->sample_rate = AV_RL16(&vmd->vmd_header[804]);
- if (vmd->sample_rate) {
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- vmd->audio_stream_index = st->index;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- st->codec->codec_id = CODEC_ID_VMDAUDIO;
- st->codec->codec_tag = 0; /* no fourcc */
- st->codec->channels = (vmd->vmd_header[811] & 0x80) ? 2 : 1;
- st->codec->sample_rate = vmd->sample_rate;
- st->codec->block_align = AV_RL16(&vmd->vmd_header[806]);
- if (st->codec->block_align & 0x8000) {
- st->codec->bits_per_sample = 16;
- st->codec->block_align = -(st->codec->block_align - 0x10000);
- } else {
- st->codec->bits_per_sample = 8;
- }
- st->codec->bit_rate = st->codec->sample_rate *
- st->codec->bits_per_sample * st->codec->channels;
-
- /* calculate pts */
- num = st->codec->block_align;
- den = st->codec->sample_rate * st->codec->channels;
- av_reduce(&den, &num, den, num, (1UL<<31)-1);
- av_set_pts_info(vst, 33, num, den);
- av_set_pts_info(st, 33, num, den);
- pts_inc = num;
- }
-
- toc_offset = AV_RL32(&vmd->vmd_header[812]);
- vmd->frame_count = AV_RL16(&vmd->vmd_header[6]);
- vmd->frames_per_block = AV_RL16(&vmd->vmd_header[18]);
- url_fseek(pb, toc_offset, SEEK_SET);
-
- raw_frame_table = NULL;
- vmd->frame_table = NULL;
- sound_buffers = AV_RL16(&vmd->vmd_header[808]);
- raw_frame_table_size = vmd->frame_count * 6;
- raw_frame_table = av_malloc(raw_frame_table_size);
- if(vmd->frame_count * vmd->frames_per_block >= UINT_MAX / sizeof(vmd_frame_t)){
- av_log(s, AV_LOG_ERROR, "vmd->frame_count * vmd->frames_per_block too large\n");
- return -1;
- }
- vmd->frame_table = av_malloc((vmd->frame_count * vmd->frames_per_block + sound_buffers) * sizeof(vmd_frame_t));
- if (!raw_frame_table || !vmd->frame_table) {
- av_free(raw_frame_table);
- av_free(vmd->frame_table);
- return AVERROR_NOMEM;
- }
- if (get_buffer(pb, raw_frame_table, raw_frame_table_size) !=
- raw_frame_table_size) {
- av_free(raw_frame_table);
- av_free(vmd->frame_table);
- return AVERROR_IO;
- }
-
- total_frames = 0;
- for (i = 0; i < vmd->frame_count; i++) {
-
- current_offset = AV_RL32(&raw_frame_table[6 * i + 2]);
-
- /* handle each entry in index block */
- for (j = 0; j < vmd->frames_per_block; j++) {
- int type;
- uint32_t size;
-
- get_buffer(pb, chunk, BYTES_PER_FRAME_RECORD);
- type = chunk[0];
- size = AV_RL32(&chunk[2]);
- if(!size)
- continue;
- switch(type) {
- case 1: /* Audio Chunk */
- /* first audio chunk contains several audio buffers */
- if(current_audio_pts){
- vmd->frame_table[total_frames].frame_offset = current_offset;
- vmd->frame_table[total_frames].stream_index = vmd->audio_stream_index;
- vmd->frame_table[total_frames].frame_size = size;
- memcpy(vmd->frame_table[total_frames].frame_record, chunk, BYTES_PER_FRAME_RECORD);
- vmd->frame_table[total_frames].pts = current_audio_pts;
- total_frames++;
- current_audio_pts += pts_inc;
- }else{
- uint32_t flags;
- int k;
- int noff;
- int64_t pos;
-
- pos = url_ftell(pb);
- url_fseek(pb, current_offset, SEEK_SET);
- flags = get_le32(pb);
- noff = 4;
- url_fseek(pb, pos, SEEK_SET);
- av_log(s, AV_LOG_DEBUG, "Sound mapping = %08X (%i bufs)\n", flags, sound_buffers);
- for(k = 0; k < sound_buffers - 1; k++){
- if(flags & 1) { /* silent block */
- vmd->frame_table[total_frames].frame_size = 0;
- }else{
- vmd->frame_table[total_frames].frame_size = st->codec->block_align + (st->codec->block_align & 1);
- }
- noff += vmd->frame_table[total_frames].frame_size;
- vmd->frame_table[total_frames].frame_offset = current_offset + noff;
- vmd->frame_table[total_frames].stream_index = vmd->audio_stream_index;
- memcpy(vmd->frame_table[total_frames].frame_record, chunk, BYTES_PER_FRAME_RECORD);
- vmd->frame_table[total_frames].pts = current_audio_pts;
- total_frames++;
- current_audio_pts += pts_inc;
- flags >>= 1;
- }
- }
- break;
- case 2: /* Video Chunk */
- vmd->frame_table[total_frames].frame_offset = current_offset;
- vmd->frame_table[total_frames].stream_index = vmd->video_stream_index;
- vmd->frame_table[total_frames].frame_size = size;
- memcpy(vmd->frame_table[total_frames].frame_record, chunk, BYTES_PER_FRAME_RECORD);
- vmd->frame_table[total_frames].pts = current_video_pts;
- total_frames++;
- break;
- }
- current_offset += size;
- }
- current_video_pts += pts_inc;
- }
-
- av_free(raw_frame_table);
-
- vmd->current_frame = 0;
- vmd->frame_count = total_frames;
-
- return 0;
-}
-
-static int vmd_read_packet(AVFormatContext *s,
- AVPacket *pkt)
-{
- VmdDemuxContext *vmd = (VmdDemuxContext *)s->priv_data;
- ByteIOContext *pb = &s->pb;
- int ret = 0;
- vmd_frame_t *frame;
-
- if (vmd->current_frame >= vmd->frame_count)
- return AVERROR_IO;
-
- frame = &vmd->frame_table[vmd->current_frame];
- /* position the stream (will probably be there already) */
- url_fseek(pb, frame->frame_offset, SEEK_SET);
-
- if (av_new_packet(pkt, frame->frame_size + BYTES_PER_FRAME_RECORD))
- return AVERROR_NOMEM;
- pkt->pos= url_ftell(pb);
- memcpy(pkt->data, frame->frame_record, BYTES_PER_FRAME_RECORD);
- ret = get_buffer(pb, pkt->data + BYTES_PER_FRAME_RECORD,
- frame->frame_size);
-
- if (ret != frame->frame_size) {
- av_free_packet(pkt);
- ret = AVERROR_IO;
- }
- pkt->stream_index = frame->stream_index;
- pkt->pts = frame->pts;
- av_log(NULL, AV_LOG_INFO, " dispatching %s frame with %d bytes and pts %"PRId64"\n",
- (frame->frame_record[0] == 0x02) ? "video" : "audio",
- frame->frame_size + BYTES_PER_FRAME_RECORD,
- pkt->pts);
-
- vmd->current_frame++;
-
- return ret;
-}
-
-static int vmd_read_close(AVFormatContext *s)
-{
- VmdDemuxContext *vmd = (VmdDemuxContext *)s->priv_data;
-
- av_free(vmd->frame_table);
-
- return 0;
-}
-
-AVInputFormat vmd_demuxer = {
- "vmd",
- "Sierra VMD format",
- sizeof(VmdDemuxContext),
- vmd_probe,
- vmd_read_header,
- vmd_read_packet,
- vmd_read_close,
-};
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