--- /dev/null
+/* GStreamer
+ *
+ * v4lmjpegsink_calls.c: functions for hardware MJPEG video sink
+ *
+ * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <errno.h>
+#include "v4lmjpegsink_calls.h"
+
+/* On some systems MAP_FAILED seems to be missing */
+#ifndef MAP_FAILED
+#define MAP_FAILED ( (caddr_t) -1 )
+#endif
+
+GST_DEBUG_CATEGORY_EXTERN (v4lmjpegsink_debug);
+#define GST_CAT_DEFAULT v4lmjpegsink_debug
+
+/******************************************************
+ * gst_v4lmjpegsink_sync_thread()
+ * thread keeps track of played frames
+ ******************************************************/
+
+static void *
+gst_v4lmjpegsink_sync_thread (void *arg)
+{
+ GstV4lMjpegSink *v4lmjpegsink = GST_V4LMJPEGSINK (arg);
+ gint frame = 0; /* frame that we're currently syncing on */
+
+ GST_DEBUG_OBJECT (v4lmjpegsink, "starting sync thread");
+
+#if 0
+ /* Allow easy shutting down by other processes... */
+ pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL);
+ pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
+#endif
+
+ while (1) {
+ g_mutex_lock (v4lmjpegsink->mutex_queued_frames);
+ if (!v4lmjpegsink->isqueued_queued_frames[frame]) {
+ g_cond_wait (v4lmjpegsink->cond_queued_frames[frame],
+ v4lmjpegsink->mutex_queued_frames);
+ }
+ if (v4lmjpegsink->isqueued_queued_frames[frame] != 1) {
+ g_mutex_unlock (v4lmjpegsink->mutex_queued_frames);
+ goto end;
+ }
+ g_mutex_unlock (v4lmjpegsink->mutex_queued_frames);
+
+ GST_DEBUG_OBJECT (v4lmjpegsink, "thread-syncing on next frame");
+ if (ioctl (GST_V4LELEMENT (v4lmjpegsink)->video_fd, MJPIOC_SYNC,
+ &(v4lmjpegsink->bsync)) < 0) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, SYNC, (NULL),
+ ("Failed to sync on frame %d: %s", frame, g_strerror (errno)));
+ g_mutex_lock (v4lmjpegsink->mutex_queued_frames);
+ v4lmjpegsink->isqueued_queued_frames[frame] = -1;
+ g_cond_broadcast (v4lmjpegsink->cond_queued_frames[frame]);
+ g_mutex_unlock (v4lmjpegsink->mutex_queued_frames);
+ goto end;
+ } else {
+ /* be sure that we're not confusing */
+ if (frame != v4lmjpegsink->bsync.frame) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, CORE, TOO_LAZY, (NULL),
+ ("Internal error: frame number confusion"));
+ goto end;
+ }
+ g_mutex_lock (v4lmjpegsink->mutex_queued_frames);
+ v4lmjpegsink->isqueued_queued_frames[frame] = 0;
+ g_cond_broadcast (v4lmjpegsink->cond_queued_frames[frame]);
+ g_mutex_unlock (v4lmjpegsink->mutex_queued_frames);
+ }
+
+ frame = (frame + 1) % v4lmjpegsink->breq.count;
+ }
+
+end:
+ GST_DEBUG_OBJECT (v4lmjpegsink, "Sync thread got signalled to exit");
+ g_thread_exit (NULL);
+ return NULL;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_queue_frame()
+ * queue a frame for playback
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+static gboolean
+gst_v4lmjpegsink_queue_frame (GstV4lMjpegSink * v4lmjpegsink, gint num)
+{
+ GST_DEBUG_OBJECT (v4lmjpegsink, "queueing frame %d", num);
+
+ /* queue on this frame */
+ if (ioctl (GST_V4LELEMENT (v4lmjpegsink)->video_fd, MJPIOC_QBUF_PLAY,
+ &num) < 0) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, WRITE, (NULL),
+ ("Failed to queue frame %d: %s", num, g_strerror (errno)));
+ return FALSE;
+ }
+
+ g_mutex_lock (v4lmjpegsink->mutex_queued_frames);
+ v4lmjpegsink->isqueued_queued_frames[num] = 1;
+ g_cond_broadcast (v4lmjpegsink->cond_queued_frames[num]);
+ g_mutex_unlock (v4lmjpegsink->mutex_queued_frames);
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_sync_frame()
+ * wait for a frame to be finished playing
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+static gboolean
+gst_v4lmjpegsink_sync_frame (GstV4lMjpegSink * v4lmjpegsink, gint * num)
+{
+ GST_DEBUG_OBJECT (v4lmjpegsink, "syncing on next frame");
+
+ /* calculate next frame */
+ v4lmjpegsink->current_frame =
+ (v4lmjpegsink->current_frame + 1) % v4lmjpegsink->breq.count;
+ *num = v4lmjpegsink->current_frame;
+
+ g_mutex_lock (v4lmjpegsink->mutex_queued_frames);
+ if (v4lmjpegsink->isqueued_queued_frames[*num] == 1) {
+ g_cond_wait (v4lmjpegsink->cond_queued_frames[*num],
+ v4lmjpegsink->mutex_queued_frames);
+ }
+ if (v4lmjpegsink->isqueued_queued_frames[*num] != 0) {
+ g_mutex_unlock (v4lmjpegsink->mutex_queued_frames);
+ return FALSE;
+ } else
+ g_mutex_unlock (v4lmjpegsink->mutex_queued_frames);
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_set_buffer()
+ * set buffer options
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+gboolean
+gst_v4lmjpegsink_set_buffer (GstV4lMjpegSink * v4lmjpegsink,
+ gint numbufs, gint bufsize)
+{
+ GST_DEBUG_OBJECT (v4lmjpegsink,
+ "setting buffer info to numbufs = %d, bufsize = %d KB", numbufs, bufsize);
+ GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lmjpegsink));
+ GST_V4L_CHECK_NOT_ACTIVE (GST_V4LELEMENT (v4lmjpegsink));
+
+ v4lmjpegsink->breq.size = bufsize * 1024;
+ v4lmjpegsink->breq.count = numbufs;
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_set_playback()
+ * set playback options (video, interlacing, etc.)
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+gboolean
+gst_v4lmjpegsink_set_playback (GstV4lMjpegSink * v4lmjpegsink,
+ gint width,
+ gint height, gint x_offset, gint y_offset, gint norm, gint interlacing)
+{
+ gint mw, mh;
+ struct mjpeg_params bparm;
+
+ GST_DEBUG_OBJECT (v4lmjpegsink,
+ "setting size=%dx%d, X/Y offsets=%d/%d, norm=%d, interlacing=%d\n",
+ width, height, x_offset, y_offset, norm, interlacing);
+ GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lmjpegsink));
+ /*GST_V4L_CHECK_NOT_ACTIVE(GST_V4LELEMENT(v4lmjpegsink)); */
+
+ if (ioctl (GST_V4LELEMENT (v4lmjpegsink)->video_fd, MJPIOC_G_PARAMS,
+ &bparm) < 0) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, SETTINGS, (NULL),
+ GST_ERROR_SYSTEM);
+ return FALSE;
+ }
+
+ bparm.input = 0;
+ bparm.norm = norm;
+ bparm.decimation = 0; /* we'll set proper values later on */
+
+ /* maxwidth is broken on marvel cards */
+ mw = GST_V4LELEMENT (v4lmjpegsink)->vcap.maxwidth;
+ if (mw != 768 && mw != 640)
+ mw = 720;
+ mh = (norm == VIDEO_MODE_NTSC ? 480 : 576);
+
+ if (width > mw || height > mh) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, TOO_LAZY, (NULL),
+ ("Video dimensions (%dx%d) are larger than device max (%dx%d)",
+ width, height, mw, mh));
+ return FALSE;
+ }
+
+ if (width <= mw / 4)
+ bparm.HorDcm = 4;
+ else if (width <= mw / 2)
+ bparm.HorDcm = 2;
+ else
+ bparm.HorDcm = 1;
+
+ /* TODO: add proper interlacing handling */
+#if 0
+ if (interlacing != INTERLACING_NOT_INTERLACED) {
+ bparm.field_per_buff = 2;
+ bparm.TmpDcm = 1;
+
+ if (height <= mh / 2)
+ bparm.VerDcm = 2;
+ else
+ bparm.VerDcm = 1;
+ } else
+#endif
+ {
+ if (height > mh / 2) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, TOO_LAZY, (NULL),
+ ("Video dimensions (%dx%d) too large for non-interlaced playback (%dx%d)",
+ width, height, mw, mh / 2));
+ return FALSE;
+ }
+
+ bparm.field_per_buff = 1;
+ bparm.TmpDcm = 2;
+
+ if (height <= mh / 4)
+ bparm.VerDcm = 2;
+ else
+ bparm.VerDcm = 1;
+ }
+
+ /* TODO: add proper interlacing handling */
+#if 0
+ bparm.odd_even = (interlacing == INTERLACING_TOP_FIRST);
+#endif
+
+ bparm.quality = 100;
+ bparm.img_width = bparm.HorDcm * width;
+ bparm.img_height = bparm.VerDcm * height / bparm.field_per_buff;
+
+ /* image X/Y offset on device */
+ if (x_offset < 0)
+ bparm.img_x = (mw - bparm.img_width) / 2;
+ else {
+ if (x_offset + bparm.img_width > mw)
+ bparm.img_x = mw - bparm.img_width;
+ else
+ bparm.img_x = x_offset;
+ }
+
+ if (y_offset < 0)
+ bparm.img_y = (mh / 2 - bparm.img_height) / 2;
+ else {
+ if (y_offset + bparm.img_height * 2 > mh)
+ bparm.img_y = mh / 2 - bparm.img_height;
+ else
+ bparm.img_y = y_offset / 2;
+ }
+
+ if (ioctl (GST_V4LELEMENT (v4lmjpegsink)->video_fd, MJPIOC_S_PARAMS,
+ &bparm) < 0) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, SETTINGS, (NULL),
+ GST_ERROR_SYSTEM);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_playback_init()
+ * initialize playback system, set up buffer, etc.
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+gboolean
+gst_v4lmjpegsink_playback_init (GstV4lMjpegSink * v4lmjpegsink)
+{
+ gint n;
+
+ GST_DEBUG_OBJECT (v4lmjpegsink, "initting playback subsystem");
+ GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lmjpegsink));
+ GST_V4L_CHECK_NOT_ACTIVE (GST_V4LELEMENT (v4lmjpegsink));
+
+ /* Request buffers */
+ if (ioctl (GST_V4LELEMENT (v4lmjpegsink)->video_fd, MJPIOC_REQBUFS,
+ &(v4lmjpegsink->breq)) < 0) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
+ return FALSE;
+ }
+
+ GST_INFO_OBJECT (v4lmjpegsink, "Got %ld buffers of size %ld KB",
+ v4lmjpegsink->breq.count, v4lmjpegsink->breq.size / 1024);
+
+ /* Map the buffers */
+ GST_V4LELEMENT (v4lmjpegsink)->buffer = mmap (0,
+ v4lmjpegsink->breq.count * v4lmjpegsink->breq.size,
+ PROT_READ | PROT_WRITE, MAP_SHARED,
+ GST_V4LELEMENT (v4lmjpegsink)->video_fd, 0);
+ if (GST_V4LELEMENT (v4lmjpegsink)->buffer == MAP_FAILED) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, TOO_LAZY, (NULL),
+ ("Error mapping video buffers: %s", g_strerror (errno)));
+ GST_V4LELEMENT (v4lmjpegsink)->buffer = NULL;
+ return FALSE;
+ }
+
+ /* allocate/init the GThread thingies */
+ v4lmjpegsink->mutex_queued_frames = g_mutex_new ();
+ v4lmjpegsink->isqueued_queued_frames = (gint8 *)
+ malloc (sizeof (gint8) * v4lmjpegsink->breq.count);
+ if (!v4lmjpegsink->isqueued_queued_frames) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, TOO_LAZY, (NULL),
+ ("Failed to create queue tracker: %s", g_strerror (errno)));
+ return FALSE;
+ }
+ v4lmjpegsink->cond_queued_frames = (GCond **)
+ malloc (sizeof (GCond *) * v4lmjpegsink->breq.count);
+ if (!v4lmjpegsink->cond_queued_frames) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, TOO_LAZY, (NULL),
+ ("Failed to create queue condition holders: %s", g_strerror (errno)));
+ return FALSE;
+ }
+ for (n = 0; n < v4lmjpegsink->breq.count; n++)
+ v4lmjpegsink->cond_queued_frames[n] = g_cond_new ();
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_playback_start()
+ * start playback system
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+gboolean
+gst_v4lmjpegsink_playback_start (GstV4lMjpegSink * v4lmjpegsink)
+{
+ GError *error;
+ gint n;
+
+ GST_DEBUG_OBJECT (v4lmjpegsink, "starting playback");
+ GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lmjpegsink));
+ GST_V4L_CHECK_ACTIVE (GST_V4LELEMENT (v4lmjpegsink));
+
+ /* mark all buffers as unqueued */
+ for (n = 0; n < v4lmjpegsink->breq.count; n++)
+ v4lmjpegsink->isqueued_queued_frames[n] = 0;
+
+ v4lmjpegsink->current_frame = -1;
+
+ /* create sync() thread */
+ v4lmjpegsink->thread_queued_frames =
+ g_thread_create (gst_v4lmjpegsink_sync_thread, (void *) v4lmjpegsink,
+ TRUE, &error);
+ if (!v4lmjpegsink->thread_queued_frames) {
+ GST_ELEMENT_ERROR (v4lmjpegsink, RESOURCE, TOO_LAZY, (NULL),
+ ("Failed to create sync thread: %s", error->message));
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_get_buffer()
+ * get address of a buffer
+ * return value: buffer's address or NULL
+ ******************************************************/
+
+guint8 *
+gst_v4lmjpegsink_get_buffer (GstV4lMjpegSink * v4lmjpegsink, gint num)
+{
+ /*GST_DEBUG_OBJECT (v4lmjpegsink, gst_v4lmjpegsink_get_buffer(), num = %d", num); */
+
+ if (!GST_V4L_IS_ACTIVE (GST_V4LELEMENT (v4lmjpegsink)) ||
+ !GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lmjpegsink)))
+ return NULL;
+
+ if (num < 0 || num >= v4lmjpegsink->breq.count)
+ return NULL;
+
+ return GST_V4LELEMENT (v4lmjpegsink)->buffer +
+ (v4lmjpegsink->breq.size * num);
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_play_frame()
+ * queue a new buffer
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+gboolean
+gst_v4lmjpegsink_play_frame (GstV4lMjpegSink * v4lmjpegsink, gint num)
+{
+ GST_DEBUG_OBJECT (v4lmjpegsink, "playing frame %d", num);
+ GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lmjpegsink));
+ GST_V4L_CHECK_ACTIVE (GST_V4LELEMENT (v4lmjpegsink));
+
+ if (!gst_v4lmjpegsink_queue_frame (v4lmjpegsink, num))
+ return FALSE;
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_wait_frame()
+ * wait for buffer to be actually played
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+gboolean
+gst_v4lmjpegsink_wait_frame (GstV4lMjpegSink * v4lmjpegsink, gint * num)
+{
+ GST_DEBUG_OBJECT (v4lmjpegsink,
+ "waiting for next frame to be finished playing");
+ GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lmjpegsink));
+ GST_V4L_CHECK_ACTIVE (GST_V4LELEMENT (v4lmjpegsink));
+
+ if (!gst_v4lmjpegsink_sync_frame (v4lmjpegsink, num))
+ return FALSE;
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_playback_stop()
+ * stop playback system and sync on remaining frames
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+gboolean
+gst_v4lmjpegsink_playback_stop (GstV4lMjpegSink * v4lmjpegsink)
+{
+ gint num;
+
+ GST_DEBUG_OBJECT (v4lmjpegsink, "stopping playback");
+ GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lmjpegsink));
+ GST_V4L_CHECK_ACTIVE (GST_V4LELEMENT (v4lmjpegsink));
+
+ /* mark next buffer as wrong */
+ if (!gst_v4lmjpegsink_sync_frame (v4lmjpegsink, &num) ||
+ !gst_v4lmjpegsink_queue_frame (v4lmjpegsink, num)) {
+ return FALSE;
+ }
+
+ /* .. and wait for all buffers to be queued on */
+ g_thread_join (v4lmjpegsink->thread_queued_frames);
+
+ return TRUE;
+}
+
+
+/******************************************************
+ * gst_v4lmjpegsink_playback_deinit()
+ * deinitialize the playback system and unmap buffer
+ * return value: TRUE on success, FALSE on error
+ ******************************************************/
+
+gboolean
+gst_v4lmjpegsink_playback_deinit (GstV4lMjpegSink * v4lmjpegsink)
+{
+ int n;
+
+ GST_DEBUG_OBJECT (v4lmjpegsink, "quitting playback subsystem");
+ GST_V4L_CHECK_OPEN (GST_V4LELEMENT (v4lmjpegsink));
+ GST_V4L_CHECK_ACTIVE (GST_V4LELEMENT (v4lmjpegsink));
+
+ /* free GThread thingies */
+ g_mutex_free (v4lmjpegsink->mutex_queued_frames);
+ for (n = 0; n < v4lmjpegsink->breq.count; n++)
+ g_cond_free (v4lmjpegsink->cond_queued_frames[n]);
+ free (v4lmjpegsink->cond_queued_frames);
+ free (v4lmjpegsink->isqueued_queued_frames);
+
+ /* unmap the buffer */
+ munmap (GST_V4LELEMENT (v4lmjpegsink)->buffer,
+ v4lmjpegsink->breq.size * v4lmjpegsink->breq.count);
+ GST_V4LELEMENT (v4lmjpegsink)->buffer = NULL;
+
+ return TRUE;
+}
projects / mafwsubrenderer / blobdiff