Signed-off-by: Gilles Chanteperdrix <gilles.chanteperd...@xenomai.org>
---
libavformat/Makefile | 1 +
libavformat/allformats.c | 1 +
libavformat/youtubedl.c | 221 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 223 insertions(+)
create mode 100644 libavformat/youtubedl.c
diff --git a/libavformat/Makefile b/libavformat/Makefile
index 8d9a770..788b505 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -487,6 +487,7 @@ OBJS-$(CONFIG_LIBQUVI_DEMUXER) += libquvi.o
OBJS-$(CONFIG_LIBRTMP) += librtmp.o
OBJS-$(CONFIG_LIBSSH_PROTOCOL) += libssh.o
OBJS-$(CONFIG_LIBSMBCLIENT_PROTOCOL) += libsmbclient.o
+OBJS-$(CONFIG_YOUTUBEDL_DEMUXER) += youtubedl.o
# protocols I/O
OBJS-$(CONFIG_APPLEHTTP_PROTOCOL) += hlsproto.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index e6a9d01..a684b73 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -386,6 +386,7 @@ void av_register_all(void)
REGISTER_DEMUXER (LIBMODPLUG, libmodplug);
REGISTER_MUXDEMUX(LIBNUT, libnut);
REGISTER_DEMUXER (LIBQUVI, libquvi);
+ REGISTER_DEMUXER (YOUTUBEDL, youtubedl);
REGISTER_PROTOCOL(LIBRTMP, librtmp);
REGISTER_PROTOCOL(LIBRTMPE, librtmpe);
REGISTER_PROTOCOL(LIBRTMPS, librtmps);
diff --git a/libavformat/youtubedl.c b/libavformat/youtubedl.c
new file mode 100644
index 0000000..2d4ec60
--- /dev/null
+++ b/libavformat/youtubedl.c
@@ -0,0 +1,221 @@
+/*
+ * Copyright (c) 2015 Gilles Chanteperdrix <g...@xenomai.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 Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "libavformat/avformat.h"
+#include "libavformat/internal.h"
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/file.h"
+#include "libavutil/opt.h"
+
+typedef struct {
+ const AVClass *class;
+ char *format;
+ AVFormatContext *fmtctx;
+} YoutubeDlContext;
+
+#define OUTBUF_SIZE 2048
+#define OFFSET(x) offsetof(YoutubeDlContext, x)
+#define FLAGS AV_OPT_FLAG_DECODING_PARAM
+static const AVOption youtubedl_options[] = {
+ { "format", "request specific format", OFFSET(format), AV_OPT_TYPE_STRING,
{.str="best"}, .flags = FLAGS },
+ { NULL }
+};
+
+static const AVClass youtubedl_context_class = {
+ .class_name = "youtubedl",
+ .item_name = av_default_item_name,
+ .option = youtubedl_options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+static int youtubedl_close(AVFormatContext *s)
+{
+ YoutubeDlContext *yc = s->priv_data;
+ if (yc->fmtctx)
+ avformat_close_input(&yc->fmtctx);
+ return 0;
+}
+
+static int youtubedl_get_output(char *output, size_t output_size,
+ AVFormatContext *s, const char *command)
+{
+ char *output_filename;
+ int fd, ret, eof;
+ size_t line_len;
+ FILE *f;
+
+ fd = av_tempfile("youtubedl", &output_filename, 0, s);
+ if (fd < 0) {
+ av_log(s, AV_LOG_ERROR, "Failed to create temporary file\n");
+ return fd;
+ }
+ close(fd);
+
+ command = av_asprintf("%s > %s", command, output_filename);
+ if (!command) {
+ av_log(s, AV_LOG_ERROR, "Out of memory\n");
+ ret = AVERROR(ENOMEM);
+ goto err_unlink_output;
+ }
+
+ ret = system(command);
+ av_free((void *)command);
+
+ if (ret != 0) {
+ av_log(s, AV_LOG_ERROR, "Unexpected youtube-dl error\n");
+ ret = ret < 0 ? AVERROR(errno) : AVERROR_EXTERNAL;
+ goto err_unlink_output;
+ }
+
+ f = fopen(output_filename, "rb");
+ if (!f) {
+ av_log(s, AV_LOG_ERROR, "Unexpected error opening youtube-dl output\n");
+ ret = AVERROR(errno);
+ goto err_unlink_output;
+ }
+
+ eof = !fgets(output, output_size, f);
+ fclose(f);
+ if (eof) {
+ if (s)
+ av_log(s, AV_LOG_ERROR, "Empty youtube-dl output\n");
+ ret = AVERROR_INVALIDDATA;
+ goto err_unlink_output;
+ }
+
+ line_len = strcspn(output, "\r\n");
+ if (line_len == output_size - 1) {
+ av_log(s, AV_LOG_ERROR, "youtube-dl output to large\n");
+ ret = AVERROR_INVALIDDATA;
+ goto err_unlink_output;
+ }
+ output[line_len] = '\0';
+ ret = 0;
+
+ err_unlink_output:
+ unlink(output_filename);
+ av_free(output_filename);
+ return ret;
+}
+
+static int youtubedl_read_header(AVFormatContext *s)
+{
+ char buffer[OUTBUF_SIZE];
+ YoutubeDlContext *yc = s->priv_data;
+ char *media_url, *pagetitle;
+ int ret, i;
+
+ snprintf(buffer, sizeof(buffer), "youtube-dl -e '%s'", s->filename);
+ ret = youtubedl_get_output(buffer, sizeof(buffer), s, buffer);
+ pagetitle = ret < 0 ? NULL : av_strdup(buffer);
+
+ snprintf(buffer, sizeof(buffer), "youtube-dl -f %s -g '%s'",
+ yc->format, s->filename);
+ ret = youtubedl_get_output(buffer, sizeof(buffer), s, buffer);
+ if (ret < 0)
+ goto err_free_pagetitle;
+ media_url = av_strdup(buffer);
+
+ yc->fmtctx = avformat_alloc_context();
+
+ if ((ret = ff_copy_whitelists(yc->fmtctx, s)) < 0)
+ goto err_free_context;
+
+ ret = avformat_open_input(&yc->fmtctx, media_url, NULL, NULL);
+ if (ret < 0)
+ goto err_free_media_url;
+
+ ret = avformat_find_stream_info(yc->fmtctx, NULL);
+ if (ret < 0)
+ goto err_free_media_url;
+
+ if (pagetitle && pagetitle[0])
+ av_dict_set(&s->metadata, "title", pagetitle, 0);
+
+ for (i = 0; i < yc->fmtctx->nb_streams; i++) {
+ AVStream *st = avformat_new_stream(s, NULL);
+ AVStream *ist = yc->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, yc->fmtctx->streams[i]->codec);
+ }
+ s->duration = yc->fmtctx->duration;
+ s->start_time = yc->fmtctx->start_time;
+ s->bit_rate = yc->fmtctx->bit_rate;
+
+ return 0;
+
+ err_close_input:
+ avformat_close_input(&yc->fmtctx);
+ err_free_media_url:
+ av_free(media_url);
+ err_free_pagetitle:
+ av_free(pagetitle);
+ return ret;
+
+ err_free_context:
+ avformat_free_context(yc->fmtctx);
+ goto err_free_media_url;
+}
+
+static int youtubedl_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ YoutubeDlContext *yc = s->priv_data;
+ return av_read_frame(yc->fmtctx, pkt);
+}
+
+static int youtubedl_read_seek(AVFormatContext *s, int stream_index, int64_t
timestamp, int flags)
+{
+ YoutubeDlContext *yc = s->priv_data;
+ return av_seek_frame(yc->fmtctx, stream_index, timestamp, flags);
+}
+
+static int youtubedl_probe(AVProbeData *p)
+{
+ char buffer[OUTBUF_SIZE];
+ int ret;
+
+ snprintf(buffer, sizeof(buffer),
+ "youtube-dl --match-filter 'extractor != generic' -g '%s'",
+ p->filename);
+ ret = youtubedl_get_output(buffer, sizeof(buffer), NULL, buffer);
+
+ return ret == 0 ? AVPROBE_SCORE_EXTENSION : 0;
+}
+
+AVInputFormat ff_youtubedl_demuxer = {
+ .name = "youtubedl",
+ .long_name = NULL_IF_CONFIG_SMALL("youtubedl demuxer"),
+ .priv_data_size = sizeof(YoutubeDlContext),
+ .read_probe = youtubedl_probe,
+ .read_header = youtubedl_read_header,
+ .read_packet = youtubedl_read_packet,
+ .read_close = youtubedl_close,
+ .read_seek = youtubedl_read_seek,
+ .priv_class = &youtubedl_context_class,
+ .flags = AVFMT_NOFILE,
+};
--
1.8.4
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