diff options
Diffstat (limited to 'contrib/ffmpeg/libavformat/avs.c')
| -rw-r--r-- | contrib/ffmpeg/libavformat/avs.c | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/contrib/ffmpeg/libavformat/avs.c b/contrib/ffmpeg/libavformat/avs.c deleted file mode 100644 index 0fa77deff..000000000 --- a/contrib/ffmpeg/libavformat/avs.c +++ /dev/null @@ -1,227 +0,0 @@ -/* - * AVS demuxer. - * Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org> - * - * 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 St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "avformat.h" -#include "voc.h" - - -typedef struct avs_format { - voc_dec_context_t voc; - AVStream *st_video; - AVStream *st_audio; - int width; - int height; - int bits_per_sample; - int fps; - int nb_frames; - int remaining_frame_size; - int remaining_audio_size; -} avs_format_t; - -typedef enum avs_block_type { - AVS_VIDEO = 0x01, - AVS_AUDIO = 0x02, - AVS_PALETTE = 0x03, - AVS_GAME_DATA = 0x04, -} avs_block_type_t; - -static int avs_probe(AVProbeData * p) -{ - const uint8_t *d; - - if (p->buf_size < 2) - return 0; - d = p->buf; - if (d[0] == 'w' && d[1] == 'W' && d[2] == 0x10 && d[3] == 0) - return 50; - - return 0; -} - -static int avs_read_header(AVFormatContext * s, AVFormatParameters * ap) -{ - avs_format_t *avs = s->priv_data; - - s->ctx_flags |= AVFMTCTX_NOHEADER; - - url_fskip(&s->pb, 4); - avs->width = get_le16(&s->pb); - avs->height = get_le16(&s->pb); - avs->bits_per_sample = get_le16(&s->pb); - avs->fps = get_le16(&s->pb); - avs->nb_frames = get_le32(&s->pb); - avs->remaining_frame_size = 0; - avs->remaining_audio_size = 0; - - avs->st_video = avs->st_audio = NULL; - - if (avs->width != 318 || avs->height != 198) - av_log(s, AV_LOG_ERROR, "This avs pretend to be %dx%d " - "when the avs format is supposed to be 318x198 only.\n", - avs->width, avs->height); - - return 0; -} - -static int -avs_read_video_packet(AVFormatContext * s, AVPacket * pkt, - avs_block_type_t type, int sub_type, int size, - uint8_t * palette, int palette_size) -{ - avs_format_t *avs = s->priv_data; - int ret; - - ret = av_new_packet(pkt, size + palette_size); - if (ret < 0) - return ret; - - if (palette_size) { - pkt->data[0] = 0x00; - pkt->data[1] = 0x03; - pkt->data[2] = palette_size & 0xFF; - pkt->data[3] = (palette_size >> 8) & 0xFF; - memcpy(pkt->data + 4, palette, palette_size - 4); - } - - pkt->data[palette_size + 0] = sub_type; - pkt->data[palette_size + 1] = type; - pkt->data[palette_size + 2] = size & 0xFF; - pkt->data[palette_size + 3] = (size >> 8) & 0xFF; - ret = get_buffer(&s->pb, pkt->data + palette_size + 4, size - 4) + 4; - if (ret < size) { - av_free_packet(pkt); - return AVERROR_IO; - } - - pkt->size = ret + palette_size; - pkt->stream_index = avs->st_video->index; - if (sub_type == 0) - pkt->flags |= PKT_FLAG_KEY; - - return 0; -} - -static int avs_read_audio_packet(AVFormatContext * s, AVPacket * pkt) -{ - avs_format_t *avs = s->priv_data; - int ret, size; - - size = url_ftell(&s->pb); - ret = voc_get_packet(s, pkt, avs->st_audio, avs->remaining_audio_size); - size = url_ftell(&s->pb) - size; - avs->remaining_audio_size -= size; - - if (ret == AVERROR_IO) - return 0; /* this indicate EOS */ - if (ret < 0) - return ret; - - pkt->stream_index = avs->st_audio->index; - pkt->flags |= PKT_FLAG_KEY; - - return size; -} - -static int avs_read_packet(AVFormatContext * s, AVPacket * pkt) -{ - avs_format_t *avs = s->priv_data; - int sub_type = 0, size = 0; - avs_block_type_t type = 0; - int palette_size = 0; - uint8_t palette[4 + 3 * 256]; - int ret; - - if (avs->remaining_audio_size > 0) - if (avs_read_audio_packet(s, pkt) > 0) - return 0; - - while (1) { - if (avs->remaining_frame_size <= 0) { - if (!get_le16(&s->pb)) /* found EOF */ - return AVERROR_IO; - avs->remaining_frame_size = get_le16(&s->pb) - 4; - } - - while (avs->remaining_frame_size > 0) { - sub_type = get_byte(&s->pb); - type = get_byte(&s->pb); - size = get_le16(&s->pb); - avs->remaining_frame_size -= size; - - switch (type) { - case AVS_PALETTE: - ret = get_buffer(&s->pb, palette, size - 4); - if (ret < size - 4) - return AVERROR_IO; - palette_size = size; - break; - - case AVS_VIDEO: - if (!avs->st_video) { - avs->st_video = av_new_stream(s, AVS_VIDEO); - if (avs->st_video == NULL) - return AVERROR_NOMEM; - avs->st_video->codec->codec_type = CODEC_TYPE_VIDEO; - avs->st_video->codec->codec_id = CODEC_ID_AVS; - avs->st_video->codec->width = avs->width; - avs->st_video->codec->height = avs->height; - avs->st_video->codec->bits_per_sample=avs->bits_per_sample; - avs->st_video->nb_frames = avs->nb_frames; - avs->st_video->codec->time_base = (AVRational) { - 1, avs->fps}; - } - return avs_read_video_packet(s, pkt, type, sub_type, size, - palette, palette_size); - - case AVS_AUDIO: - if (!avs->st_audio) { - avs->st_audio = av_new_stream(s, AVS_AUDIO); - if (avs->st_audio == NULL) - return AVERROR_NOMEM; - avs->st_audio->codec->codec_type = CODEC_TYPE_AUDIO; - } - avs->remaining_audio_size = size - 4; - size = avs_read_audio_packet(s, pkt); - if (size != 0) - return size; - break; - - default: - url_fskip(&s->pb, size - 4); - } - } - } -} - -static int avs_read_close(AVFormatContext * s) -{ - return 0; -} - -AVInputFormat avs_demuxer = { - "avs", - "avs format", - sizeof(avs_format_t), - avs_probe, - avs_read_header, - avs_read_packet, - avs_read_close, -}; 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