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Diffstat (limited to 'contrib/ffmpeg/libavformat/bethsoftvid.c')
-rw-r--r--contrib/ffmpeg/libavformat/bethsoftvid.c233
1 files changed, 0 insertions, 233 deletions
diff --git a/contrib/ffmpeg/libavformat/bethsoftvid.c b/contrib/ffmpeg/libavformat/bethsoftvid.c
deleted file mode 100644
index 594779698..000000000
--- a/contrib/ffmpeg/libavformat/bethsoftvid.c
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * Bethsoft VID format Demuxer
- * Copyright (c) 2007 Nicholas Tung
- *
- * 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 bethsoftvid.c
- * @brief Bethesda Softworks VID (.vid) file demuxer
- * @author Nicholas Tung [ntung (at. ntung com] (2007-03)
- * @sa http://wiki.multimedia.cx/index.php?title=Bethsoft_VID
- * @sa http://www.svatopluk.com/andux/docs/dfvid.html
- */
-
-#include "avformat.h"
-#include "bethsoftvideo.h"
-
-typedef struct BVID_DemuxContext
-{
- int nframes;
- /** delay value between frames, added to individual frame delay.
- * custom units, which will be added to other custom units (~=16ms according
- * to free, unofficial documentation) */
- int bethsoft_global_delay;
-
- /** video presentation time stamp.
- * delay = 16 milliseconds * (global_delay + per_frame_delay) */
- int video_pts;
-
- int is_finished;
-
-} BVID_DemuxContext;
-
-static int vid_probe(AVProbeData *p)
-{
- // little endian VID tag, file starts with "VID\0"
- if (AV_RL32(p->buf) != MKTAG('V', 'I', 'D', 0))
- return 0;
-
- return AVPROBE_SCORE_MAX;
-}
-
-static int vid_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
-{
- BVID_DemuxContext *vid = s->priv_data;
- ByteIOContext *pb = s->pb;
- AVStream *stream;
-
- /* load main header. Contents:
- * bytes: 'V' 'I' 'D'
- * int16s: always_512, nframes, width, height, delay, always_14
- */
- url_fseek(pb, 5, SEEK_CUR);
- vid->nframes = get_le16(pb);
-
- stream = av_new_stream(s, 0);
- if (!stream)
- return AVERROR(ENOMEM);
- av_set_pts_info(stream, 32, 1, 60); // 16 ms increments, i.e. 60 fps
- stream->codec->codec_type = CODEC_TYPE_VIDEO;
- stream->codec->codec_id = CODEC_ID_BETHSOFTVID;
- stream->codec->width = get_le16(pb);
- stream->codec->height = get_le16(pb);
- stream->codec->pix_fmt = PIX_FMT_PAL8;
- vid->bethsoft_global_delay = get_le16(pb);
- get_le16(pb);
-
- // done with video codec, set up audio codec
- stream = av_new_stream(s, 0);
- if (!stream)
- return AVERROR(ENOMEM);
- stream->codec->codec_type = CODEC_TYPE_AUDIO;
- stream->codec->codec_id = CODEC_ID_PCM_U8;
- stream->codec->channels = 1;
- stream->codec->sample_rate = 11025;
- stream->codec->bits_per_sample = 8;
- stream->codec->bit_rate = stream->codec->channels * stream->codec->sample_rate * stream->codec->bits_per_sample;
-
- return 0;
-}
-
-#define BUFFER_PADDING_SIZE 1000
-static int read_frame(BVID_DemuxContext *vid, ByteIOContext *pb, AVPacket *pkt,
- uint8_t block_type, AVFormatContext *s, int npixels)
-{
- uint8_t * vidbuf_start = NULL;
- int vidbuf_nbytes = 0;
- int code;
- int bytes_copied = 0;
- int position;
- unsigned int vidbuf_capacity;
-
- vidbuf_start = av_malloc(vidbuf_capacity = BUFFER_PADDING_SIZE);
- if(!vidbuf_start)
- return AVERROR(ENOMEM);
-
- // save the file position for the packet, include block type
- position = url_ftell(pb) - 1;
-
- vidbuf_start[vidbuf_nbytes++] = block_type;
-
- // get the video delay (next int16), and set the presentation time
- vid->video_pts += vid->bethsoft_global_delay + get_le16(pb);
-
- // set the y offset if it exists (decoder header data should be in data section)
- if(block_type == VIDEO_YOFF_P_FRAME){
- if(get_buffer(pb, &vidbuf_start[vidbuf_nbytes], 2) != 2)
- goto fail;
- vidbuf_nbytes += 2;
- }
-
- do{
- vidbuf_start = av_fast_realloc(vidbuf_start, &vidbuf_capacity, vidbuf_nbytes + BUFFER_PADDING_SIZE);
- if(!vidbuf_start)
- return AVERROR(ENOMEM);
-
- code = get_byte(pb);
- vidbuf_start[vidbuf_nbytes++] = code;
-
- if(code >= 0x80){ // rle sequence
- if(block_type == VIDEO_I_FRAME)
- vidbuf_start[vidbuf_nbytes++] = get_byte(pb);
- } else if(code){ // plain sequence
- if(get_buffer(pb, &vidbuf_start[vidbuf_nbytes], code) != code)
- goto fail;
- vidbuf_nbytes += code;
- }
- bytes_copied += code & 0x7F;
- if(bytes_copied == npixels){ // sometimes no stop character is given, need to keep track of bytes copied
- // may contain a 0 byte even if read all pixels
- if(get_byte(pb))
- url_fseek(pb, -1, SEEK_CUR);
- break;
- }
- if(bytes_copied > npixels)
- goto fail;
- } while(code);
-
- // copy data into packet
- if(av_new_packet(pkt, vidbuf_nbytes) < 0)
- goto fail;
- memcpy(pkt->data, vidbuf_start, vidbuf_nbytes);
- av_free(vidbuf_start);
-
- pkt->pos = position;
- pkt->stream_index = 0; // use the video decoder, which was initialized as the first stream
- pkt->pts = vid->video_pts;
-
- vid->nframes--; // used to check if all the frames were read
- return vidbuf_nbytes;
-fail:
- av_free(vidbuf_start);
- return -1;
-}
-
-static int vid_read_packet(AVFormatContext *s,
- AVPacket *pkt)
-{
- BVID_DemuxContext *vid = s->priv_data;
- ByteIOContext *pb = s->pb;
- unsigned char block_type;
- int audio_length;
- int ret_value;
-
- if(vid->is_finished || url_feof(pb))
- return AVERROR(EIO);
-
- block_type = get_byte(pb);
- switch(block_type){
- case PALETTE_BLOCK:
- url_fseek(pb, -1, SEEK_CUR); // include block type
- ret_value = av_get_packet(pb, pkt, 3 * 256 + 1);
- if(ret_value != 3 * 256 + 1){
- av_free_packet(pkt);
- return AVERROR(EIO);
- }
- pkt->stream_index = 0;
- return ret_value;
-
- case FIRST_AUDIO_BLOCK:
- get_le16(pb);
- // soundblaster DAC used for sample rate, as on specification page (link above)
- s->streams[1]->codec->sample_rate = 1000000 / (256 - get_byte(pb));
- s->streams[1]->codec->bit_rate = s->streams[1]->codec->channels * s->streams[1]->codec->sample_rate * s->streams[1]->codec->bits_per_sample;
- case AUDIO_BLOCK:
- audio_length = get_le16(pb);
- ret_value = av_get_packet(pb, pkt, audio_length);
- pkt->stream_index = 1;
- return (ret_value != audio_length ? AVERROR(EIO) : ret_value);
-
- case VIDEO_P_FRAME:
- case VIDEO_YOFF_P_FRAME:
- case VIDEO_I_FRAME:
- return read_frame(vid, pb, pkt, block_type, s,
- s->streams[0]->codec->width * s->streams[0]->codec->height);
-
- case EOF_BLOCK:
- if(vid->nframes != 0)
- av_log(s, AV_LOG_VERBOSE, "reached terminating character but not all frames read.\n");
- vid->is_finished = 1;
- return AVERROR(EIO);
- default:
- av_log(s, AV_LOG_ERROR, "unknown block (character = %c, decimal = %d, hex = %x)!!!\n",
- block_type, block_type, block_type); return -1;
- }
-
- return 0;
-}
-
-AVInputFormat bethsoftvid_demuxer = {
- "bethsoftvid",
- "Bethesda Softworks 'Daggerfall' VID format",
- sizeof(BVID_DemuxContext),
- vid_probe,
- vid_read_header,
- vid_read_packet,
-};
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-03 00:06:57 +0000