yading@11: /*
yading@11:  * Copyright (c) 2013 Clément Bœsch
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include <quvi/quvi.h>
yading@11: 
yading@11: #include "libavformat/avformat.h"
yading@11: #include "libavformat/internal.h"
yading@11: #include "libavutil/opt.h"
yading@11: 
yading@11: typedef struct {
yading@11:     const AVClass *class;
yading@11:     char *format;
yading@11:     AVFormatContext *fmtctx;
yading@11: } LibQuviContext;
yading@11: 
yading@11: #define OFFSET(x) offsetof(LibQuviContext, x)
yading@11: #define FLAGS AV_OPT_FLAG_DECODING_PARAM
yading@11: static const AVOption libquvi_options[] = {
yading@11:     { "format", "request specific format", OFFSET(format), AV_OPT_TYPE_STRING, {.str="best"}, .flags = FLAGS },
yading@11:     { NULL }
yading@11: };
yading@11: 
yading@11: static const AVClass libquvi_context_class = {
yading@11:     .class_name     = "libquvi",
yading@11:     .item_name      = av_default_item_name,
yading@11:     .option         = libquvi_options,
yading@11:     .version        = LIBAVUTIL_VERSION_INT,
yading@11: };
yading@11: 
yading@11: static int libquvi_close(AVFormatContext *s)
yading@11: {
yading@11:     LibQuviContext *qc = s->priv_data;
yading@11:     if (qc->fmtctx)
yading@11:         avformat_close_input(&qc->fmtctx);
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: static int libquvi_read_header(AVFormatContext *s)
yading@11: {
yading@11:     int i, ret;
yading@11:     quvi_t q;
yading@11:     quvi_media_t m;
yading@11:     QUVIcode rc;
yading@11:     LibQuviContext *qc = s->priv_data;
yading@11:     char *media_url, *pagetitle;
yading@11: 
yading@11:     rc = quvi_init(&q);
yading@11:     if (rc != QUVI_OK)
yading@11:         goto quvi_fail;
yading@11: 
yading@11:     quvi_setopt(q, QUVIOPT_FORMAT, qc->format);
yading@11: 
yading@11:     rc = quvi_parse(q, s->filename, &m);
yading@11:     if (rc != QUVI_OK)
yading@11:         goto quvi_fail;
yading@11: 
yading@11:     rc = quvi_getprop(m, QUVIPROP_MEDIAURL, &media_url);
yading@11:     if (rc != QUVI_OK)
yading@11:         goto quvi_fail;
yading@11: 
yading@11:     ret = avformat_open_input(&qc->fmtctx, media_url, NULL, NULL);
yading@11:     if (ret < 0)
yading@11:         goto end;
yading@11: 
yading@11:     rc = quvi_getprop(m, QUVIPROP_PAGETITLE, &pagetitle);
yading@11:     if (rc == QUVI_OK)
yading@11:         av_dict_set(&s->metadata, "title", pagetitle, 0);
yading@11: 
yading@11:     for (i = 0; i < qc->fmtctx->nb_streams; i++) {
yading@11:         AVStream *st = avformat_new_stream(s, NULL);
yading@11:         AVStream *ist = qc->fmtctx->streams[i];
yading@11:         if (!st) {
yading@11:             ret = AVERROR(ENOMEM);
yading@11:             goto end;
yading@11:         }
yading@11:         avpriv_set_pts_info(st, ist->pts_wrap_bits, ist->time_base.num, ist->time_base.den);
yading@11:         avcodec_copy_context(st->codec, qc->fmtctx->streams[i]->codec);
yading@11:     }
yading@11: 
yading@11:     return 0;
yading@11: 
yading@11: quvi_fail:
yading@11:     av_log(s, AV_LOG_ERROR, "%s\n", quvi_strerror(q, rc));
yading@11:     ret = AVERROR_EXTERNAL;
yading@11: 
yading@11: end:
yading@11:     quvi_parse_close(&m);
yading@11:     quvi_close(&q);
yading@11:     return ret;
yading@11: }
yading@11: 
yading@11: static int libquvi_read_packet(AVFormatContext *s, AVPacket *pkt)
yading@11: {
yading@11:     LibQuviContext *qc = s->priv_data;
yading@11:     return av_read_frame(qc->fmtctx, pkt);
yading@11: }
yading@11: 
yading@11: static int libquvi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
yading@11: {
yading@11:     LibQuviContext *qc = s->priv_data;
yading@11:     return av_seek_frame(qc->fmtctx, stream_index, timestamp, flags);
yading@11: }
yading@11: 
yading@11: static int libquvi_probe(AVProbeData *p)
yading@11: {
yading@11:     int score;
yading@11:     quvi_t q;
yading@11:     QUVIcode rc;
yading@11: 
yading@11:     rc = quvi_init(&q);
yading@11:     if (rc != QUVI_OK)
yading@11:         return AVERROR(ENOMEM);
yading@11:     score = quvi_supported(q, (char *)p->filename) == QUVI_OK ? AVPROBE_SCORE_MAX/2 : 0;
yading@11:     quvi_close(&q);
yading@11:     return score;
yading@11: }
yading@11: 
yading@11: AVInputFormat ff_libquvi_demuxer = {
yading@11:     .name           = "libquvi",
yading@11:     .long_name      = NULL_IF_CONFIG_SMALL("libquvi demuxer"),
yading@11:     .priv_data_size = sizeof(LibQuviContext),
yading@11:     .read_probe     = libquvi_probe,
yading@11:     .read_header    = libquvi_read_header,
yading@11:     .read_packet    = libquvi_read_packet,
yading@11:     .read_close     = libquvi_close,
yading@11:     .read_seek      = libquvi_read_seek,
yading@11:     .priv_class     = &libquvi_context_class,
yading@11:     .flags          = AVFMT_NOFILE,
yading@11: };