X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fidroq.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fidroq.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=c2af12f9182a8d3b9b1572f34f0cb377580c298f;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/idroq.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/idroq.c deleted file mode 100644 index c2af12f..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/idroq.c +++ /dev/null @@ -1,301 +0,0 @@ -/* - * Id RoQ (.roq) File Demuxer - * Copyright (c) 2003 The ffmpeg Project - * - * This library 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 of the License, or (at your option) any later version. - * - * This library 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -/** - * @file idroq.c - * Id RoQ format file demuxer - * by Mike Melanson (melanson@pcisys.net) - * for more information on the .roq file format, visit: - * http://www.csse.monash.edu.au/~timf/ - */ - -#include "avformat.h" - -#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0]) -#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \ - (((uint8_t*)(x))[2] << 16) | \ - (((uint8_t*)(x))[1] << 8) | \ - ((uint8_t*)(x))[0]) - -#define RoQ_MAGIC_NUMBER 0x1084 -#define RoQ_CHUNK_PREAMBLE_SIZE 8 -#define RoQ_AUDIO_SAMPLE_RATE 22050 -#define RoQ_CHUNKS_TO_SCAN 30 - -#define RoQ_INFO 0x1001 -#define RoQ_QUAD_CODEBOOK 0x1002 -#define RoQ_QUAD_VQ 0x1011 -#define RoQ_SOUND_MONO 0x1020 -#define RoQ_SOUND_STEREO 0x1021 - -typedef struct RoqDemuxContext { - - int width; - int height; - int audio_channels; - int framerate; - int frame_pts_inc; - - int video_stream_index; - int audio_stream_index; - - int64_t video_pts; - unsigned int audio_frame_count; - -} RoqDemuxContext; - -static int roq_probe(AVProbeData *p) -{ - if (p->buf_size < 6) - return 0; - - if ((LE_16(&p->buf[0]) != RoQ_MAGIC_NUMBER) || - (LE_32(&p->buf[2]) != 0xFFFFFFFF)) - return 0; - - return AVPROBE_SCORE_MAX; -} - -static int roq_read_header(AVFormatContext *s, - AVFormatParameters *ap) -{ - RoqDemuxContext *roq = s->priv_data; - ByteIOContext *pb = &s->pb; - AVStream *st; - unsigned char preamble[RoQ_CHUNK_PREAMBLE_SIZE]; - int i; - unsigned int chunk_size; - unsigned int chunk_type; - - /* get the main header */ - if (get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) != - RoQ_CHUNK_PREAMBLE_SIZE) - return AVERROR_IO; - roq->framerate = LE_16(&preamble[6]); - roq->frame_pts_inc = 90000 / roq->framerate; - - /* set the pts reference (1 pts = 1/90000) */ - s->pts_num = 1; - s->pts_den = 90000; - - /* init private context parameters */ - roq->width = roq->height = roq->audio_channels = roq->video_pts = - roq->audio_frame_count = 0; - - /* scan the first n chunks searching for A/V parameters */ - for (i = 0; i < RoQ_CHUNKS_TO_SCAN; i++) { - if (get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) != - RoQ_CHUNK_PREAMBLE_SIZE) - return AVERROR_IO; - - chunk_type = LE_16(&preamble[0]); - chunk_size = LE_32(&preamble[2]); - - switch (chunk_type) { - - case RoQ_INFO: - /* fetch the width and height; reuse the preamble bytes */ - if (get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) != - RoQ_CHUNK_PREAMBLE_SIZE) - return AVERROR_IO; - roq->width = LE_16(&preamble[0]); - roq->height = LE_16(&preamble[2]); - break; - - case RoQ_QUAD_CODEBOOK: - case RoQ_QUAD_VQ: - /* ignore during this scan */ - url_fseek(pb, chunk_size, SEEK_CUR); - break; - - case RoQ_SOUND_MONO: - roq->audio_channels = 1; - url_fseek(pb, chunk_size, SEEK_CUR); - break; - - case RoQ_SOUND_STEREO: - roq->audio_channels = 2; - url_fseek(pb, chunk_size, SEEK_CUR); - break; - - default: - printf (" unknown RoQ chunk type (%04X)\n", LE_16(&preamble[0])); - return AVERROR_INVALIDDATA; - break; - } - - /* if all necessary parameters have been gathered, exit early */ - if ((roq->width && roq->height) && roq->audio_channels) - break; - } - - /* seek back to the first chunk */ - url_fseek(pb, RoQ_CHUNK_PREAMBLE_SIZE, SEEK_SET); - - /* initialize the decoders */ - st = av_new_stream(s, 0); - if (!st) - return AVERROR_NOMEM; - roq->video_stream_index = st->index; - st->codec.codec_type = CODEC_TYPE_VIDEO; - st->codec.codec_id = CODEC_ID_ROQ; - st->codec.codec_tag = 0; /* no fourcc */ - st->codec.width = roq->width; - st->codec.height = roq->height; - - if (roq->audio_channels) { - st = av_new_stream(s, 0); - if (!st) - return AVERROR_NOMEM; - roq->audio_stream_index = st->index; - st->codec.codec_type = CODEC_TYPE_AUDIO; - st->codec.codec_id = CODEC_ID_ROQ_DPCM; - st->codec.codec_tag = 0; /* no tag */ - st->codec.channels = roq->audio_channels; - st->codec.sample_rate = RoQ_AUDIO_SAMPLE_RATE; - st->codec.bits_per_sample = 16; - st->codec.bit_rate = st->codec.channels * st->codec.sample_rate * - st->codec.bits_per_sample; - st->codec.block_align = st->codec.channels * st->codec.bits_per_sample; - } - - return 0; -} - -static int roq_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - RoqDemuxContext *roq = s->priv_data; - ByteIOContext *pb = &s->pb; - int ret = 0; - unsigned int chunk_size; - unsigned int chunk_type; - unsigned int codebook_size; - unsigned char preamble[RoQ_CHUNK_PREAMBLE_SIZE]; - int packet_read = 0; - offset_t codebook_offset; - - while (!packet_read) { - - if (url_feof(&s->pb)) - return -EIO; - - /* get the next chunk preamble */ - if ((ret = get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE)) != - RoQ_CHUNK_PREAMBLE_SIZE) - return -EIO; - - chunk_type = LE_16(&preamble[0]); - chunk_size = LE_32(&preamble[2]); - - switch (chunk_type) { - - case RoQ_INFO: - /* don't care about this chunk anymore */ - url_fseek(pb, RoQ_CHUNK_PREAMBLE_SIZE, SEEK_CUR); - break; - - case RoQ_QUAD_CODEBOOK: - /* packet needs to contain both this codebook and next VQ chunk */ - codebook_offset = url_ftell(pb) - RoQ_CHUNK_PREAMBLE_SIZE; - codebook_size = chunk_size; - url_fseek(pb, codebook_size, SEEK_CUR); - if (get_buffer(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE) != - RoQ_CHUNK_PREAMBLE_SIZE) - return -EIO; - chunk_size = LE_32(&preamble[2]) + RoQ_CHUNK_PREAMBLE_SIZE * 2 + - codebook_size; - - /* rewind */ - url_fseek(pb, codebook_offset, SEEK_SET); - - /* load up the packet */ - if (av_new_packet(pkt, chunk_size)) - return -EIO; - pkt->stream_index = roq->video_stream_index; - pkt->pts = roq->video_pts; - ret = get_buffer(pb, pkt->data, chunk_size); - if (ret != chunk_size) - ret = -EIO; - - roq->video_pts += roq->frame_pts_inc; - packet_read = 1; - break; - - case RoQ_SOUND_MONO: - case RoQ_SOUND_STEREO: - case RoQ_QUAD_VQ: - /* load up the packet */ - if (av_new_packet(pkt, chunk_size + RoQ_CHUNK_PREAMBLE_SIZE)) - return -EIO; - /* copy over preamble */ - memcpy(pkt->data, preamble, RoQ_CHUNK_PREAMBLE_SIZE); - - if (chunk_type == RoQ_QUAD_VQ) { - pkt->stream_index = roq->video_stream_index; - pkt->pts = roq->video_pts; - roq->video_pts += roq->frame_pts_inc; - } else { - pkt->stream_index = roq->audio_stream_index; - pkt->pts = roq->audio_frame_count; - pkt->pts *= 90000; - pkt->pts /= RoQ_AUDIO_SAMPLE_RATE; - roq->audio_frame_count += (chunk_size / roq->audio_channels); - } - - ret = get_buffer(pb, pkt->data + RoQ_CHUNK_PREAMBLE_SIZE, - chunk_size); - if (ret != chunk_size) - ret = -EIO; - - packet_read = 1; - break; - - default: - printf (" unknown RoQ chunk (%04X)\n", chunk_type); - return AVERROR_INVALIDDATA; - break; - } - } - - return ret; -} - -static int roq_read_close(AVFormatContext *s) -{ -// RoqDemuxContext *roq = (RoqDemuxContext *)s->priv_data; - - return 0; -} - -static AVInputFormat roq_iformat = { - "RoQ", - "Id RoQ format", - sizeof(RoqDemuxContext), - roq_probe, - roq_read_header, - roq_read_packet, - roq_read_close, -}; - -int roq_init(void) -{ - av_register_input_format(&roq_iformat); - return 0; -}