ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavformat/libquvi.c

@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2013 Clément Bœsch
+ *
+ * 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
+ */
+
+#include <quvi/quvi.h>
+
+#include "libavformat/avformat.h"
+#include "libavformat/internal.h"
+#include "libavutil/avassert.h"
+#include "libavutil/opt.h"
+
+typedef struct {
+    const AVClass *class;
+    char *format;
+    AVFormatContext *fmtctx;
+} LibQuviContext;
+
+#define OFFSET(x) offsetof(LibQuviContext, x)
+#define FLAGS AV_OPT_FLAG_DECODING_PARAM
+static const AVOption libquvi_options[] = {
+    { "format", "request specific format", OFFSET(format), AV_OPT_TYPE_STRING, {.str="best"}, .flags = FLAGS },
+    { NULL }
+};
+
+static const AVClass libquvi_context_class = {
+    .class_name     = "libquvi",
+    .item_name      = av_default_item_name,
+    .option         = libquvi_options,
+    .version        = LIBAVUTIL_VERSION_INT,
+};
+
+static int libquvi_close(AVFormatContext *s)
+{
+    LibQuviContext *qc = s->priv_data;
+    if (qc->fmtctx)
+        avformat_close_input(&qc->fmtctx);
+    return 0;
+}
+
+static int libquvi_read_header(AVFormatContext *s)
+{
+    int i, ret;
+    quvi_t q;
+    quvi_media_t m;
+    QUVIcode rc;
+    LibQuviContext *qc = s->priv_data;
+    char *media_url, *pagetitle;
+
+    rc = quvi_init(&q);
+    if (rc != QUVI_OK) {
+        av_log(s, AV_LOG_ERROR, "%s\n", quvi_strerror(q, rc));
+        return AVERROR_EXTERNAL;
+    }
+
+    quvi_setopt(q, QUVIOPT_FORMAT, qc->format);
+
+    rc = quvi_parse(q, s->filename, &m);
+    if (rc != QUVI_OK) {
+        av_log(s, AV_LOG_ERROR, "%s\n", quvi_strerror(q, rc));
+        ret = AVERROR_EXTERNAL;
+        goto err_quvi_close;
+    }
+
+    rc = quvi_getprop(m, QUVIPROP_MEDIAURL, &media_url);
+    if (rc != QUVI_OK) {
+        av_log(s, AV_LOG_ERROR, "%s\n", quvi_strerror(q, rc));
+        ret = AVERROR_EXTERNAL;
+        goto err_quvi_cleanup;
+    }
+
+    if (!(qc->fmtctx = avformat_alloc_context())) {
+        ret = AVERROR(ENOMEM);
+        goto err_quvi_cleanup;
+    }
+
+    if ((ret = ff_copy_whitelists(qc->fmtctx, s)) < 0) {
+        avformat_free_context(qc->fmtctx);
+        qc->fmtctx = NULL;
+        goto err_quvi_cleanup;
+    }
+
+    ret = avformat_open_input(&qc->fmtctx, media_url, NULL, NULL);
+    if (ret < 0)
+        goto err_quvi_cleanup;
+
+    rc = quvi_getprop(m, QUVIPROP_PAGETITLE, &pagetitle);
+    if (rc == QUVI_OK)
+        av_dict_set(&s->metadata, "title", pagetitle, 0);
+
+    for (i = 0; i < qc->fmtctx->nb_streams; i++) {
+        AVStream *st = avformat_new_stream(s, NULL);
+        AVStream *ist = qc->fmtctx->streams[i];
+        if (!st) {
+            ret = AVERROR(ENOMEM);
+            goto err_close_input;
+        }
+        avpriv_set_pts_info(st, ist->pts_wrap_bits, ist->time_base.num, ist->time_base.den);
+        avcodec_copy_context(st->codec, qc->fmtctx->streams[i]->codec);
+    }
+
+    return 0;
+
+  err_close_input:
+    avformat_close_input(&qc->fmtctx);
+  err_quvi_cleanup:
+    quvi_parse_close(&m);
+  err_quvi_close:
+    quvi_close(&q);
+    return ret;
+}
+
+static int libquvi_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    LibQuviContext *qc = s->priv_data;
+    return av_read_frame(qc->fmtctx, pkt);
+}
+
+static int libquvi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
+{
+    LibQuviContext *qc = s->priv_data;
+    return av_seek_frame(qc->fmtctx, stream_index, timestamp, flags);
+}
+
+static int libquvi_probe(AVProbeData *p)
+{
+    int score;
+    quvi_t q;
+    QUVIcode rc;
+
+    rc = quvi_init(&q);
+    if (rc != QUVI_OK)
+        return AVERROR(ENOMEM);
+    score = quvi_supported(q, (char *)p->filename) == QUVI_OK ? AVPROBE_SCORE_EXTENSION : 0;
+    quvi_close(&q);
+    return score;
+}
+
+AVInputFormat ff_libquvi_demuxer = {
+    .name           = "libquvi",
+    .long_name      = NULL_IF_CONFIG_SMALL("libquvi demuxer"),
+    .priv_data_size = sizeof(LibQuviContext),
+    .read_probe     = libquvi_probe,
+    .read_header    = libquvi_read_header,
+    .read_packet    = libquvi_read_packet,
+    .read_close     = libquvi_close,
+    .read_seek      = libquvi_read_seek,
+    .priv_class     = &libquvi_context_class,
+    .flags          = AVFMT_NOFILE,
+};