From 58301405824924a8e81017c144338d86ca28eba4 Mon Sep 17 00:00:00 2001
From: reimar <reimar@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Tue, 17 Nov 2009 16:09:17 +0000
Subject: Add preliminary support for streaming via FFmpeg's URProtocol
 functions. Basic playback tested for file and http protocols.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@29923 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 stream/stream_ffmpeg.c | 140 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 stream/stream_ffmpeg.c

(limited to 'stream/stream_ffmpeg.c')

diff --git a/stream/stream_ffmpeg.c b/stream/stream_ffmpeg.c
new file mode 100644
index 0000000000..c7a4dde541
--- /dev/null
+++ b/stream/stream_ffmpeg.c
@@ -0,0 +1,140 @@
+#include "config.h"
+
+#include "libavformat/avformat.h"
+#include "libavformat/avio.h"
+#include "mp_msg.h"
+#include "stream.h"
+#include "m_option.h"
+#include "m_struct.h"
+
+static struct stream_priv_s {
+    char *filename;
+    char *filename2;
+} stream_priv_dflts = {
+    NULL, NULL
+};
+
+#define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
+/// URL definition
+static const m_option_t stream_opts_fields[] = {
+    {"string",   ST_OFF(filename),  CONF_TYPE_STRING, 0, 0 ,0, NULL},
+    {"filename", ST_OFF(filename2), CONF_TYPE_STRING, 0, 0 ,0, NULL},
+    {NULL}
+};
+
+static const struct m_struct_st stream_opts = {
+    "ffmpeg",
+    sizeof(struct stream_priv_s),
+    &stream_priv_dflts,
+    stream_opts_fields
+};
+
+static int fill_buffer(stream_t *s, char *buffer, int max_len)
+{
+    int r = url_read_complete(s->priv, buffer, max_len);
+    return (r <= 0) ? -1 : r;
+}
+
+static int write_buffer(stream_t *s, char *buffer, int len)
+{
+    int r = url_write(s->priv, buffer, len);
+    return (r <= 0) ? -1 : r;
+}
+
+static int seek(stream_t *s, off_t newpos)
+{
+    s->pos = newpos;
+    if (url_seek(s->priv, s->pos, SEEK_SET) < 0) {
+        s->eof = 1;
+        return 0;
+    }
+    return 1;
+}
+
+static int control(stream_t *s, int cmd, void *arg)
+{
+    int64_t size;
+    switch(cmd) {
+    case STREAM_CTRL_GET_SIZE:
+        size = url_filesize(s->priv);
+        if(size >= 0) {
+            *(off_t *)arg = size;
+            return 1;
+        }
+    }
+    return STREAM_UNSUPPORTED;
+}
+
+static void close_f(stream_t *stream)
+{
+    url_close(stream->priv);
+}
+
+static const char prefix[] = "ffmpeg://";
+
+static int open_f(stream_t *stream, int mode, void *opts, int *file_format)
+{
+    int flags = 0;
+    const char *filename;
+    struct stream_priv_s *p = opts;
+    URLContext *ctx = NULL;
+    int res = STREAM_ERROR;
+    int64_t size;
+
+    av_register_all();
+    if (mode == STREAM_READ)
+        flags = URL_RDONLY;
+    else if (mode == STREAM_WRITE)
+        flags = URL_WRONLY;
+    else {
+        mp_msg(MSGT_OPEN, MSGL_ERR, "[ffmpeg] Unknown open mode %d\n", mode);
+        res = STREAM_UNSUPPORTED;
+        goto out;
+    }
+
+    if (p->filename)
+        filename = p->filename;
+    else if (p->filename2)
+        filename = p->filename2;
+    else {
+        mp_msg(MSGT_OPEN, MSGL_ERR, "[ffmpeg] No URL\n");
+        goto out;
+    }
+    if (!strncmp(filename, prefix, strlen(prefix)))
+        filename += strlen(prefix);
+    mp_msg(MSGT_OPEN, MSGL_V, "[ffmpeg] Opening %s\n", filename);
+
+    if (url_open(&ctx, filename, flags) < 0)
+        goto out;
+
+    stream->priv = ctx;
+    size = url_filesize(ctx);
+    if (size >= 0)
+        stream->end_pos = size;
+    stream->type = STREAMTYPE_FILE;
+    if (ctx->is_streamed) {
+        stream->type = STREAMTYPE_STREAM;
+        stream->flags |= STREAM_SEEK_FW;
+    }
+    stream->seek = seek;
+    stream->fill_buffer = fill_buffer;
+    stream->write_buffer = write_buffer;
+    stream->control = control;
+    stream->close = close_f;
+    res = STREAM_OK;
+
+out:
+    m_struct_free(&stream_opts,opts);
+    return res;
+}
+
+const stream_info_t stream_info_ffmpeg = {
+  "FFmpeg",
+  "ffmpeg",
+  "",
+  "",
+  open_f,
+  { "ffmpeg", NULL },
+  &stream_opts,
+  1 // Urls are an option string
+};
-- 
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