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%2F4xm.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2F4xm.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=7db3e602a5d353d726dfda35baaf0a643571d270;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/4xm.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/4xm.c deleted file mode 100644 index 7db3e60..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/4xm.c +++ /dev/null @@ -1,345 +0,0 @@ -/* - * 4X Technologies .4xm File Demuxer (no muxer) - * 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 4xm.c - * 4X Technologies file demuxer - * by Mike Melanson (melanson@pcisys.net) - * for more information on the .4xm file format, visit: - * http://www.pcisys.net/~melanson/codecs/ - */ - -#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 FOURCC_TAG( ch0, ch1, ch2, ch3 ) \ - ( (long)(unsigned char)(ch0) | \ - ( (long)(unsigned char)(ch1) << 8 ) | \ - ( (long)(unsigned char)(ch2) << 16 ) | \ - ( (long)(unsigned char)(ch3) << 24 ) ) - -#define RIFF_TAG FOURCC_TAG('R', 'I', 'F', 'F') -#define _4XMV_TAG FOURCC_TAG('4', 'X', 'M', 'V') -#define LIST_TAG FOURCC_TAG('L', 'I', 'S', 'T') -#define HEAD_TAG FOURCC_TAG('H', 'E', 'A', 'D') -#define TRK__TAG FOURCC_TAG('T', 'R', 'K', '_') -#define MOVI_TAG FOURCC_TAG('M', 'O', 'V', 'I') -#define VTRK_TAG FOURCC_TAG('V', 'T', 'R', 'K') -#define STRK_TAG FOURCC_TAG('S', 'T', 'R', 'K') -#define name_TAG FOURCC_TAG('n', 'a', 'm', 'e') -#define vtrk_TAG FOURCC_TAG('v', 't', 'r', 'k') -#define strk_TAG FOURCC_TAG('s', 't', 'r', 'k') -#define ifrm_TAG FOURCC_TAG('i', 'f', 'r', 'm') -#define pfrm_TAG FOURCC_TAG('p', 'f', 'r', 'm') -#define cfrm_TAG FOURCC_TAG('c', 'f', 'r', 'm') -#define snd__TAG FOURCC_TAG('s', 'n', 'd', '_') -#define _TAG FOURCC_TAG('', '', '', '') - -#define vtrk_SIZE 0x44 -#define strk_SIZE 0x28 - -#define GET_LIST_HEADER() \ - fourcc_tag = get_le32(pb); \ - size = get_le32(pb); \ - if (fourcc_tag != LIST_TAG) \ - return AVERROR_INVALIDDATA; \ - fourcc_tag = get_le32(pb); - -typedef struct AudioTrack { - int sample_rate; - int bits; - int channels; - int stream_index; - int adpcm; -} AudioTrack; - -typedef struct FourxmDemuxContext { - int width; - int height; - int video_stream_index; - int track_count; - AudioTrack *tracks; - int selected_track; - - int64_t pts; - int last_chunk_was_audio; - int last_audio_frame_count; -} FourxmDemuxContext; - -static int fourxm_probe(AVProbeData *p) -{ - if (p->buf_size < 12) - return 0; - - if ((LE_32(&p->buf[0]) != RIFF_TAG) || - (LE_32(&p->buf[8]) != _4XMV_TAG)) - return 0; - - return AVPROBE_SCORE_MAX; -} - -static int fourxm_read_header(AVFormatContext *s, - AVFormatParameters *ap) -{ - ByteIOContext *pb = &s->pb; - unsigned int fourcc_tag; - unsigned int size; - int header_size; - FourxmDemuxContext *fourxm = (FourxmDemuxContext *)s->priv_data; - unsigned char *header; - int i; - int current_track = -1; - AVStream *st; - - fourxm->track_count = 0; - fourxm->tracks = NULL; - fourxm->selected_track = 0; - - /* skip the first 3 32-bit numbers */ - url_fseek(pb, 12, SEEK_CUR); - - /* check for LIST-HEAD */ - GET_LIST_HEADER(); - header_size = size - 4; - if (fourcc_tag != HEAD_TAG) - return AVERROR_INVALIDDATA; - - /* allocate space for the header and load the whole thing */ - header = av_malloc(header_size); - if (!header) - return AVERROR_NOMEM; - if (get_buffer(pb, header, header_size) != header_size) - return AVERROR_IO; - - /* take the lazy approach and search for any and all vtrk and strk chunks */ - for (i = 0; i < header_size - 8; i++) { - fourcc_tag = LE_32(&header[i]); - size = LE_32(&header[i + 4]); - - if (fourcc_tag == vtrk_TAG) { - /* check that there is enough data */ - if (size != vtrk_SIZE) { - av_free(header); - return AVERROR_INVALIDDATA; - } - fourxm->width = LE_32(&header[i + 36]); - fourxm->height = LE_32(&header[i + 40]); - i += 8 + size; - - /* allocate a new AVStream */ - st = av_new_stream(s, 0); - if (!st) - return AVERROR_NOMEM; - - fourxm->video_stream_index = st->index; - - st->codec.codec_type = CODEC_TYPE_VIDEO; - st->codec.codec_id = CODEC_ID_4XM; - st->codec.codec_tag = 0; /* no fourcc */ - st->codec.width = fourxm->width; - st->codec.height = fourxm->height; - - } else if (fourcc_tag == strk_TAG) { - /* check that there is enough data */ - if (size != strk_SIZE) { - av_free(header); - return AVERROR_INVALIDDATA; - } - current_track = LE_32(&header[i + 8]); - if (current_track + 1 > fourxm->track_count) { - fourxm->track_count = current_track + 1; - fourxm->tracks = av_realloc(fourxm->tracks, - fourxm->track_count * sizeof(AudioTrack)); - if (!fourxm->tracks) { - av_free(header); - return AVERROR_NOMEM; - } - } - fourxm->tracks[current_track].adpcm = LE_32(&header[i + 12]); - fourxm->tracks[current_track].channels = LE_32(&header[i + 36]); - fourxm->tracks[current_track].sample_rate = LE_32(&header[i + 40]); - fourxm->tracks[current_track].bits = LE_32(&header[i + 44]); - printf("bps:%d\n", fourxm->tracks[current_track].bits); - i += 8 + size; - - /* allocate a new AVStream */ - st = av_new_stream(s, current_track); - if (!st) - return AVERROR_NOMEM; - - fourxm->tracks[current_track].stream_index = st->index; - - st->codec.codec_type = CODEC_TYPE_AUDIO; - st->codec.codec_tag = 1; - st->codec.channels = fourxm->tracks[current_track].channels; - st->codec.sample_rate = fourxm->tracks[current_track].sample_rate; - st->codec.bits_per_sample = fourxm->tracks[current_track].bits; - 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; - if (fourxm->tracks[current_track].adpcm) - st->codec.codec_id = CODEC_ID_ADPCM_4XM; - else if (st->codec.bits_per_sample == 8) - st->codec.codec_id = CODEC_ID_PCM_U8; - else - st->codec.codec_id = CODEC_ID_PCM_S16LE; - } - } - - av_free(header); - - /* skip over the LIST-MOVI chunk (which is where the stream should be */ - GET_LIST_HEADER(); - if (fourcc_tag != MOVI_TAG) - return AVERROR_INVALIDDATA; - - /* initialize context members */ - fourxm->pts = 0; - fourxm->last_chunk_was_audio = 0; - fourxm->last_audio_frame_count = 0; - - /* set the pts reference (1 pts = 1/90000) */ - s->pts_num = 1; - s->pts_den = 90000; - - return 0; -} - -static int fourxm_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - FourxmDemuxContext *fourxm = s->priv_data; - ByteIOContext *pb = &s->pb; - unsigned int fourcc_tag; - unsigned int size, out_size; - int ret = 0; - int track_number; - int packet_read = 0; - unsigned char header[8]; - int64_t pts_inc; - - while (!packet_read) { - - if ((ret = get_buffer(&s->pb, header, 8)) < 0) - return ret; - fourcc_tag = LE_32(&header[0]); - size = LE_32(&header[4]); - if (url_feof(pb)) - return -EIO; - switch (fourcc_tag) { - - case LIST_TAG: - /* skip the LIST-* tag and move on to the next fourcc */ - get_le32(pb); - break; - - case ifrm_TAG: - case pfrm_TAG: - case cfrm_TAG:{ - - /* bump the pts if the last data sent out was audio */ - if (fourxm->last_chunk_was_audio) { - fourxm->last_chunk_was_audio = 0; - pts_inc = fourxm->last_audio_frame_count; - pts_inc *= 90000; - pts_inc /= fourxm->tracks[fourxm->selected_track].sample_rate; - fourxm->pts += pts_inc; - } - - /* allocate 8 more bytes than 'size' to account for fourcc - * and size */ - if (av_new_packet(pkt, size + 8)) - return -EIO; - pkt->stream_index = fourxm->video_stream_index; - pkt->pts = fourxm->pts; - memcpy(pkt->data, header, 8); - ret = get_buffer(&s->pb, &pkt->data[8], size); - - if (ret < 0) - av_free_packet(pkt); - else - packet_read = 1; - break; - } - - case snd__TAG: - track_number = get_le32(pb); - out_size= get_le32(pb); - size-=8; - - if (track_number == fourxm->selected_track) { - if (av_new_packet(pkt, size)) - return -EIO; - pkt->stream_index = - fourxm->tracks[fourxm->selected_track].stream_index; - pkt->pts = fourxm->pts; - ret = get_buffer(&s->pb, pkt->data, size); - if (ret < 0) - av_free_packet(pkt); - else - packet_read = 1; - - /* maintain pts info for the benefit of the video track */ - fourxm->last_chunk_was_audio = 1; - fourxm->last_audio_frame_count = size / - ((fourxm->tracks[fourxm->selected_track].bits / 8) * - fourxm->tracks[fourxm->selected_track].channels); - - } else { - url_fseek(pb, size, SEEK_CUR); - } - break; - - default: - url_fseek(pb, size, SEEK_CUR); - break; - } - } - return ret; -} - -static int fourxm_read_close(AVFormatContext *s) -{ - FourxmDemuxContext *fourxm = (FourxmDemuxContext *)s->priv_data; - - av_free(fourxm->tracks); - - return 0; -} - -static AVInputFormat fourxm_iformat = { - "4xm", - "4X Technologies format", - sizeof(FourxmDemuxContext), - fourxm_probe, - fourxm_read_header, - fourxm_read_packet, - fourxm_read_close, -}; - -int fourxm_init(void) -{ - av_register_input_format(&fourxm_iformat); - return 0; -}