USE_VAAPISINK_GLX=0
fi
+dnl Check for FFmpeg
+PKG_CHECK_MODULES(LIBAVFORMAT, [libavformat])
+AC_CHECK_HEADERS([libavformat/avformat.h])
+
+PKG_CHECK_MODULES(LIBAVCODEC, [libavcodec])
+AC_CHECK_HEADERS([libavcodec/avcodec.h])
+AC_CHECK_HEADERS([libavcodec/vaapi.h])
+
AC_DEFINE_UNQUOTED(USE_GLX, $USE_GLX,
[Defined to 1 if GLX is enabled])
AM_CONDITIONAL(USE_GLX, test $USE_GLX -eq 1)
libgstvaapi_includedir = \
$(includedir)/gstreamer-@GST_MAJORMINOR@/gst/vaapi
+libgstvaapi_ffmpeg_source_c = \
+ gstvaapidecoder_ffmpeg.c \
+ $(NULL)
+
+libgstvaapi_ffmpeg_source_h = \
+ gstvaapidecoder_ffmpeg.h \
+ $(NULL)
+
+libgstvaapi_ffmpeg_source_priv_h = \
+ $(NULL)
+
libgstvaapi_source_c = \
+ gstvaapicontext.c \
+ gstvaapidecoder.c \
gstvaapidisplay.c \
gstvaapiimage.c \
gstvaapiimageformat.c \
gstvaapisubpicture.c \
gstvaapisurface.c \
gstvaapisurfacepool.c \
+ gstvaapisurfaceproxy.c \
gstvaapiutils.c \
gstvaapivalue.c \
gstvaapivideobuffer.c \
gstvaapivideopool.c \
gstvaapivideosink.c \
gstvaapiwindow.c \
+ $(libgstvaapi_ffmpeg_source_c) \
$(NULL)
libgstvaapi_source_h = \
+ gstvaapicontext.h \
+ gstvaapidecoder.h \
gstvaapidisplay.h \
gstvaapiimage.h \
gstvaapiimageformat.h \
gstvaapisubpicture.h \
gstvaapisurface.h \
gstvaapisurfacepool.h \
+ gstvaapisurfaceproxy.h \
gstvaapitypes.h \
gstvaapivalue.h \
gstvaapivideobuffer.h \
gstvaapivideopool.h \
gstvaapivideosink.h \
gstvaapiwindow.h \
+ $(libgstvaapi_ffmpeg_source_h) \
$(NULL)
libgstvaapi_source_priv_h = \
gstvaapicompat.h \
gstvaapidebug.h \
+ gstvaapidecoder_priv.h \
gstvaapidisplay_priv.h \
gstvaapiobject_priv.h \
gstvaapiutils.h \
gstvaapi_priv.h \
+ $(libgst_vaapi_ffmpeg_source_priv_h) \
$(NULL)
libgstvaapi_x11_source_c = \
-I$(top_srcdir)/gst-libs \
$(GST_BASE_CFLAGS) \
$(GST_CFLAGS) \
+ $(LIBAVCODEC_CFLAGS) \
+ $(LIBAVFORMAT_CFLAGS) \
$(LIBVA_CFLAGS) \
$(NULL)
libgstvaapi_@GST_MAJORMINOR@_la_LIBADD = \
$(GST_BASE_LIBS) \
$(GST_LIBS) \
+ $(LIBAVCODEC_LIBS) \
+ $(LIBAVFORMAT_LIBS) \
$(LIBVA_LIBS) \
$(NULL)
--- /dev/null
+/*
+ * gstvaapidecoder.c - VA decoder abstraction
+ *
+ * gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+/**
+ * SECTION:gstvaapidecoder
+ * @short_description: VA decoder abstraction
+ */
+
+#include "config.h"
+#include <assert.h>
+#include <string.h>
+#include "gstvaapicompat.h"
+#include "gstvaapidecoder.h"
+#include "gstvaapidecoder_priv.h"
+#include "gstvaapiutils.h"
+#include "gstvaapi_priv.h"
+
+#define DEBUG 1
+#include "gstvaapidebug.h"
+
+G_DEFINE_TYPE(GstVaapiDecoder, gst_vaapi_decoder, G_TYPE_OBJECT);
+
+enum {
+ PROP_0,
+
+ PROP_DISPLAY,
+ PROP_CODEC,
+};
+
+static gpointer
+decoder_thread_cb(gpointer data)
+{
+ GstVaapiDecoder * const decoder = data;
+ GstVaapiDecoderPrivate * const priv = decoder->priv;
+ GstVaapiDecoderClass * const klass = GST_VAAPI_DECODER_GET_CLASS(decoder);
+ GstVaapiDecoderStatus status = GST_VAAPI_DECODER_STATUS_SUCCESS;
+
+ if (!klass->decode) {
+ g_error("unimplemented GstVaapiDecoder::decode() function");
+ return NULL;
+ }
+
+ while (!priv->decoder_thread_cancel) {
+ g_mutex_lock(priv->adapter_mutex);
+ while (!gst_adapter_available(priv->adapter)) {
+ g_cond_wait(priv->adapter_cond, priv->adapter_mutex);
+ if (priv->decoder_thread_cancel)
+ break;
+ }
+ g_mutex_unlock(priv->adapter_mutex);
+
+ if (!priv->decoder_thread_cancel) {
+ if (status == GST_VAAPI_DECODER_STATUS_SUCCESS) {
+ g_object_ref(decoder);
+ status = klass->decode(decoder);
+ g_object_unref(decoder);
+ GST_DEBUG("decode frame (status = %d)", status);
+ }
+ else {
+ /* XXX: something went wrong, simply destroy any
+ buffer until this decoder is destroyed */
+ g_mutex_lock(priv->adapter_mutex);
+ gst_adapter_clear(priv->adapter);
+ g_mutex_unlock(priv->adapter_mutex);
+
+ /* Signal the main thread we got an error */
+ gst_vaapi_decoder_push_surface(decoder, NULL);
+ }
+ }
+ }
+ return NULL;
+}
+
+static GstBuffer *
+create_buffer(const guchar *buf, guint buf_size, gboolean copy)
+{
+ GstBuffer *buffer;
+
+ buffer = gst_buffer_new();
+ if (!buffer)
+ return NULL;
+
+ if (copy) {
+ buffer->malloc_data = g_malloc(buf_size);
+ if (!buffer->malloc_data) {
+ gst_buffer_unref(buffer);
+ return NULL;
+ }
+ memcpy(buffer->malloc_data, buf, buf_size);
+ GST_BUFFER_DATA(buffer) = buffer->malloc_data;
+ GST_BUFFER_SIZE(buffer) = buf_size;
+ }
+ else {
+ GST_BUFFER_DATA(buffer) = (guint8 *)buf;
+ GST_BUFFER_SIZE(buffer) = buf_size;
+ }
+ return buffer;
+}
+
+static gboolean
+push_buffer(GstVaapiDecoder *decoder, GstBuffer *buffer)
+{
+ GstVaapiDecoderPrivate * const priv = decoder->priv;
+
+ if (!buffer)
+ return FALSE;
+
+ g_return_val_if_fail(priv->adapter_mutex && priv->adapter_cond, FALSE);
+
+ GST_DEBUG("queue encoded data buffer %p (%d bytes)",
+ buffer, GST_BUFFER_SIZE(buffer));
+
+ /* XXX: add a mechanism to wait for enough buffer bytes to be consumed */
+ g_mutex_lock(priv->adapter_mutex);
+ gst_adapter_push(priv->adapter, buffer);
+ g_cond_signal(priv->adapter_cond);
+ g_mutex_unlock(priv->adapter_mutex);
+
+ if (!priv->decoder_thread) {
+ priv->decoder_thread = g_thread_create(
+ decoder_thread_cb, decoder,
+ TRUE,
+ NULL
+ );
+ if (!priv->decoder_thread)
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static void
+unref_surface_cb(gpointer surface, gpointer user_data)
+{
+ if (surface)
+ g_object_unref(GST_VAAPI_SURFACE(surface));
+}
+
+static void
+gst_vaapi_decoder_finalize(GObject *object)
+{
+ GstVaapiDecoderPrivate * const priv = GST_VAAPI_DECODER(object)->priv;
+
+ if (priv->decoder_thread) {
+ priv->decoder_thread_cancel = TRUE;
+ if (priv->adapter_mutex && priv->adapter_cond) {
+ g_mutex_lock(priv->adapter_mutex);
+ g_cond_signal(priv->adapter_cond);
+ g_mutex_unlock(priv->adapter_mutex);
+ }
+ g_thread_join(priv->decoder_thread);
+ priv->decoder_thread = NULL;
+ }
+
+ if (priv->adapter) {
+ gst_adapter_clear(priv->adapter);
+ g_object_unref(priv->adapter);
+ priv->adapter = NULL;
+ }
+
+ if (priv->adapter_cond) {
+ g_cond_free(priv->adapter_cond);
+ priv->adapter_cond = NULL;
+ }
+
+ if (priv->adapter_mutex) {
+ g_mutex_free(priv->adapter_mutex);
+ priv->adapter_mutex = NULL;
+ }
+
+ if (priv->context) {
+ g_object_unref(priv->context);
+ priv->context = NULL;
+ }
+
+ g_queue_foreach(&priv->surfaces, unref_surface_cb, NULL);
+
+ if (priv->surfaces_cond) {
+ g_cond_free(priv->surfaces_cond);
+ priv->surfaces_cond = NULL;
+ }
+
+ if (priv->surfaces_mutex) {
+ g_mutex_free(priv->surfaces_mutex);
+ priv->surfaces_mutex = NULL;
+ }
+
+ if (priv->display) {
+ g_object_unref(priv->display);
+ priv->display = NULL;
+ }
+
+ G_OBJECT_CLASS(gst_vaapi_decoder_parent_class)->finalize(object);
+}
+
+static void
+gst_vaapi_decoder_set_property(
+ GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec
+)
+{
+ GstVaapiDecoderPrivate * const priv = GST_VAAPI_DECODER(object)->priv;
+
+ switch (prop_id) {
+ case PROP_DISPLAY:
+ priv->display = g_object_ref(g_value_get_object(value));
+ break;
+ case PROP_CODEC:
+ priv->codec = g_value_get_uint(value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_vaapi_decoder_get_property(
+ GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec
+)
+{
+ GstVaapiDecoderPrivate * const priv = GST_VAAPI_DECODER(object)->priv;
+
+ switch (prop_id) {
+ case PROP_DISPLAY:
+ g_value_set_object(value, priv->display);
+ break;
+ case PROP_CODEC:
+ g_value_set_uint(value, priv->codec);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_vaapi_decoder_class_init(GstVaapiDecoderClass *klass)
+{
+ GObjectClass * const object_class = G_OBJECT_CLASS(klass);
+
+ g_type_class_add_private(klass, sizeof(GstVaapiDecoderPrivate));
+
+ object_class->finalize = gst_vaapi_decoder_finalize;
+ object_class->set_property = gst_vaapi_decoder_set_property;
+ object_class->get_property = gst_vaapi_decoder_get_property;
+
+ /**
+ * GstVaapiDecoder:display:
+ *
+ * The #GstVaapiDisplay this decoder is bound to.
+ */
+ g_object_class_install_property
+ (object_class,
+ PROP_DISPLAY,
+ g_param_spec_object("display",
+ "Display",
+ "The GstVaapiDisplay this decoder is bound to",
+ GST_VAAPI_TYPE_DISPLAY,
+ G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
+
+ g_object_class_install_property
+ (object_class,
+ PROP_CODEC,
+ g_param_spec_uint("codec",
+ "Codec",
+ "The codec handled by the decoder",
+ 0, G_MAXINT32, 0,
+ G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
+}
+
+static void
+gst_vaapi_decoder_init(GstVaapiDecoder *decoder)
+{
+ GstVaapiDecoderPrivate *priv = GST_VAAPI_DECODER_GET_PRIVATE(decoder);
+
+ decoder->priv = priv;
+ priv->context = NULL;
+ priv->codec = 0;
+ priv->adapter = gst_adapter_new();
+ priv->adapter_mutex = g_mutex_new();
+ priv->adapter_cond = g_cond_new();
+ priv->surfaces_mutex = g_mutex_new();
+ priv->surfaces_cond = g_cond_new();
+ priv->decoder_thread = NULL;
+ priv->decoder_thread_cancel = FALSE;
+
+ g_queue_init(&priv->surfaces);
+}
+
+/**
+ * gst_vaapi_decoder_put_buffer_data:
+ * @decoder: a #GstVaapiDecoder
+ * @buf: pointer to buffer data
+ * @buf_size: size of buffer data in bytes
+ *
+ * Queues @buf_size bytes from the data @buf to the HW decoder. The
+ * caller is responsible for making sure @buf is live beyond this
+ * function. So, this function is mostly useful with static data
+ * buffers. gst_vaapi_decoder_put_buffer_data_copy() does the same but
+ * copies the data.
+ *
+ * Caller can notify an End-Of-Stream with @buf set to %NULL and
+ * @buf_size set to zero.
+ *
+ * Return value: %TRUE on success
+ */
+gboolean
+gst_vaapi_decoder_put_buffer_data(
+ GstVaapiDecoder *decoder,
+ const guchar *buf,
+ guint buf_size
+)
+{
+ g_return_val_if_fail(GST_VAAPI_IS_DECODER(decoder), FALSE);
+ g_return_val_if_fail(buf, FALSE);
+ g_return_val_if_fail(buf_size > 0, FALSE);
+
+ return push_buffer(decoder, create_buffer(buf, buf_size, FALSE));
+}
+
+/**
+ * gst_vaapi_decoder_put_buffer_data_copy:
+ * @decoder: a #GstVaapiDecoder
+ * @buf: pointer to buffer data
+ * @buf_size: size of buffer data in bytes
+ *
+ * Queues a copy of @buf to the HW decoder.
+ *
+ * Caller can notify an End-Of-Stream with @buf set to %NULL and
+ * @buf_size set to zero.
+ *
+ * Return value: %TRUE on success
+ */
+gboolean
+gst_vaapi_decoder_put_buffer_data_copy(
+ GstVaapiDecoder *decoder,
+ const guchar *buf,
+ guint buf_size
+)
+{
+ g_return_val_if_fail(GST_VAAPI_IS_DECODER(decoder), FALSE);
+ g_return_val_if_fail(buf, FALSE);
+ g_return_val_if_fail(buf_size > 0, FALSE);
+
+ return push_buffer(decoder, create_buffer(buf, buf_size, TRUE));
+}
+
+/**
+ * gst_vaapi_decoder_put_buffer:
+ * @decoder: a #GstVaapiDecoder
+ * @buf: a #GstBuffer
+ *
+ * Queues a #GstBuffer to the HW decoder. The decoder holds a
+ * reference to @buf.
+ *
+ * Caller can notify an End-Of-Stream with @buf set to %NULL.
+ *
+ * Return value: %TRUE on success
+ */
+gboolean
+gst_vaapi_decoder_put_buffer(GstVaapiDecoder *decoder, GstBuffer *buf)
+{
+ g_return_val_if_fail(GST_VAAPI_IS_DECODER(decoder), FALSE);
+ g_return_val_if_fail(GST_IS_BUFFER(buf), FALSE);
+
+ return push_buffer(decoder, gst_buffer_ref(buf));
+}
+
+/**
+ * gst_vaapi_decoder_get_surface:
+ * @decoder: a #GstVaapiDecoder
+ * @pstatus: return location for the decoder status, or %NULL
+ *
+ * Waits for a decoded surface to arrive. This functions blocks until
+ * the @decoder has a surface ready for the caller. @pstatus is
+ * optional but it can help to know what went wrong during the
+ * decoding process.
+ *
+ * Return value: a #GstVaapiSurfaceProxy holding the decoded surface,
+ * or %NULL if none is available (e.g. an error). Caller owns the
+ * returned object. g_object_unref() after usage.
+ */
+static GstVaapiSurface *
+_gst_vaapi_decoder_get_surface(
+ GstVaapiDecoder *decoder,
+ GTimeVal *timeout,
+ GstVaapiDecoderStatus *pstatus
+)
+{
+ GstVaapiDecoderPrivate * const priv = decoder->priv;
+ GstVaapiSurface *surface;
+
+ g_mutex_lock(priv->surfaces_mutex);
+ while (g_queue_is_empty(&priv->surfaces))
+ if (!g_cond_timed_wait(priv->surfaces_cond, priv->surfaces_mutex, timeout))
+ break;
+ surface = g_queue_pop_head(&priv->surfaces);
+ g_mutex_unlock(priv->surfaces_mutex);
+
+ if (surface)
+ *pstatus = GST_VAAPI_DECODER_STATUS_SUCCESS;
+ else {
+ g_mutex_lock(priv->adapter_mutex);
+ if (gst_adapter_available(priv->adapter))
+ *pstatus = GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
+ else if (timeout)
+ *pstatus = GST_VAAPI_DECODER_STATUS_TIMEOUT;
+ else
+ *pstatus = GST_VAAPI_DECODER_STATUS_END_OF_STREAM;
+ g_mutex_unlock(priv->adapter_mutex);
+ }
+ return surface;
+}
+
+GstVaapiSurfaceProxy *
+gst_vaapi_decoder_get_surface(
+ GstVaapiDecoder *decoder,
+ GstVaapiDecoderStatus *pstatus
+)
+{
+ GstVaapiSurfaceProxy *proxy = NULL;
+ GstVaapiSurface *surface;
+ GstVaapiDecoderStatus status;
+
+ g_return_val_if_fail(GST_VAAPI_IS_DECODER(decoder), NULL);
+
+ surface = _gst_vaapi_decoder_get_surface(decoder, NULL, &status);
+ if (surface) {
+ proxy = gst_vaapi_surface_proxy_new(decoder->priv->context, surface);
+ if (!proxy)
+ status = GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
+ g_object_unref(surface);
+ }
+
+ if (pstatus)
+ *pstatus = status;
+ return proxy;
+}
+
+/**
+ * gst_vaapi_decoder_timed_get_surface:
+ * @decoder: a #GstVaapiDecoder
+ * @timeout: the number of microseconds to wait for the decoded surface
+ * @pstatus: return location for the decoder status, or %NULL
+ *
+ * Waits for a decoded surface to arrive. This function blocks for at
+ * least @timeout microseconds. @pstatus is optional but it can help
+ * to know what went wrong during the decoding process.
+ *
+ * Return value: a #GstVaapiSurfaceProxy holding the decoded surface,
+ * or %NULL if none is available (e.g. an error). Caller owns the
+ * returned object. g_object_unref() after usage.
+ */
+GstVaapiSurfaceProxy *
+gst_vaapi_decoder_timed_get_surface(
+ GstVaapiDecoder *decoder,
+ guint32 timeout,
+ GstVaapiDecoderStatus *pstatus
+)
+{
+ GstVaapiSurfaceProxy *proxy = NULL;
+ GstVaapiSurface *surface;
+ GstVaapiDecoderStatus status;
+ GTimeVal end_time;
+
+ g_return_val_if_fail(GST_VAAPI_IS_DECODER(decoder), NULL);
+
+ g_get_current_time(&end_time);
+ g_time_val_add(&end_time, timeout);
+
+ surface = _gst_vaapi_decoder_get_surface(decoder, &end_time, &status);
+ if (surface) {
+ proxy = gst_vaapi_surface_proxy_new(decoder->priv->context, surface);
+ if (!proxy)
+ status = GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
+ g_object_unref(surface);
+ }
+
+ if (pstatus)
+ *pstatus = status;
+ return proxy;
+}
+
+gboolean
+gst_vaapi_decoder_ensure_context(
+ GstVaapiDecoder *decoder,
+ GstVaapiProfile profile,
+ GstVaapiEntrypoint entrypoint,
+ guint width,
+ guint height
+)
+{
+ GstVaapiDecoderPrivate * const priv = decoder->priv;
+
+ if (priv->context)
+ return gst_vaapi_context_reset(priv->context,
+ profile, entrypoint, width, height);
+
+ priv->context = gst_vaapi_context_new(
+ priv->display,
+ profile,
+ entrypoint,
+ width,
+ height
+ );
+ return priv->context != NULL;
+}
+
+guint
+gst_vaapi_decoder_copy(
+ GstVaapiDecoder *decoder,
+ guint offset,
+ guchar *buf,
+ guint buf_size
+)
+{
+ GstVaapiDecoderPrivate * const priv = decoder->priv;
+ guint avail;
+
+ if (!buf || !buf_size)
+ return 0;
+
+ avail = gst_vaapi_decoder_read_avail(decoder);
+ if (offset >= avail)
+ return 0;
+ if (buf_size > avail - offset)
+ buf_size = avail - offset;
+
+ if (buf_size > 0) {
+ g_mutex_lock(priv->adapter_mutex);
+ gst_adapter_copy(priv->adapter, buf, offset, buf_size);
+ g_mutex_unlock(priv->adapter_mutex);
+ }
+ return buf_size;
+}
+
+guint
+gst_vaapi_decoder_read_avail(GstVaapiDecoder *decoder)
+{
+ GstVaapiDecoderPrivate * const priv = decoder->priv;
+ guint avail;
+
+ g_mutex_lock(priv->adapter_mutex);
+ avail = gst_adapter_available(priv->adapter);
+ g_mutex_unlock(priv->adapter_mutex);
+ return avail;
+}
+
+guint
+gst_vaapi_decoder_read(GstVaapiDecoder *decoder, guchar *buf, guint buf_size)
+{
+ buf_size = gst_vaapi_decoder_copy(decoder, 0, buf, buf_size);
+ if (buf_size > 0)
+ gst_vaapi_decoder_flush(decoder, buf_size);
+ return buf_size;
+}
+
+void
+gst_vaapi_decoder_flush(GstVaapiDecoder *decoder, guint buf_size)
+{
+ GstVaapiDecoderPrivate * const priv = decoder->priv;
+ guint avail;
+
+ if (!buf_size)
+ return;
+
+ avail = gst_vaapi_decoder_read_avail(decoder);
+ if (buf_size > avail)
+ buf_size = avail;
+
+ g_mutex_lock(priv->adapter_mutex);
+ gst_adapter_flush(priv->adapter, buf_size);
+ g_mutex_unlock(priv->adapter_mutex);
+}
+
+gboolean
+gst_vaapi_decoder_push_surface(
+ GstVaapiDecoder *decoder,
+ GstVaapiSurface *surface
+)
+{
+ GstVaapiDecoderPrivate * const priv = decoder->priv;
+
+ if (surface)
+ GST_DEBUG("queue decoded surface %" GST_VAAPI_ID_FORMAT,
+ GST_VAAPI_ID_ARGS(GST_VAAPI_OBJECT_ID(surface)));
+ else
+ GST_DEBUG("queue null surface to signal an error");
+
+ g_mutex_lock(priv->surfaces_mutex);
+ g_queue_push_tail(&priv->surfaces, surface ? g_object_ref(surface) : NULL);
+ g_cond_signal(priv->surfaces_cond);
+ g_mutex_unlock(priv->surfaces_mutex);
+ return TRUE;
+}
--- /dev/null
+/*
+ * gstvaapidecoder.h - VA decoder abstraction
+ *
+ * gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef GST_VAAPI_DECODER_H
+#define GST_VAAPI_DECODER_H
+
+#include <gst/gstbuffer.h>
+#include <gst/vaapi/gstvaapicontext.h>
+#include <gst/vaapi/gstvaapisurfaceproxy.h>
+
+G_BEGIN_DECLS
+
+#define GST_VAAPI_TYPE_DECODER \
+ (gst_vaapi_decoder_get_type())
+
+#define GST_VAAPI_DECODER(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj), \
+ GST_VAAPI_TYPE_DECODER, \
+ GstVaapiDecoder))
+
+#define GST_VAAPI_DECODER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass), \
+ GST_VAAPI_TYPE_DECODER, \
+ GstVaapiDecoderClass))
+
+#define GST_VAAPI_IS_DECODER(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_DECODER))
+
+#define GST_VAAPI_IS_DECODER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_DECODER))
+
+#define GST_VAAPI_DECODER_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS((obj), \
+ GST_VAAPI_TYPE_DECODER, \
+ GstVaapiDecoderClass))
+
+typedef enum _GstVaapiDecoderStatus GstVaapiDecoderStatus;
+typedef struct _GstVaapiDecoder GstVaapiDecoder;
+typedef struct _GstVaapiDecoderPrivate GstVaapiDecoderPrivate;
+typedef struct _GstVaapiDecoderClass GstVaapiDecoderClass;
+
+/**
+ * GstVaapiDecoderStatus:
+ * @GST_VAAPI_DECODER_STATUS_SUCCESS: Success.
+ * @GST_VAAPI_DECODER_STATUS_TIMEOUT: Timeout. Try again later.
+ * @GST_VAAPI_DECODER_STATUS_EOS: End-Of-Stream.
+ * @GST_VAAPI_DECODER_STATUS_ERROR: Unknown error.
+ *
+ * Decoder status for gst_vaapi_decoder_get_surface().
+ */
+enum _GstVaapiDecoderStatus {
+ GST_VAAPI_DECODER_STATUS_SUCCESS = 0,
+ GST_VAAPI_DECODER_STATUS_TIMEOUT,
+ GST_VAAPI_DECODER_STATUS_END_OF_STREAM,
+ GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED,
+ GST_VAAPI_DECODER_STATUS_ERROR_INIT_FAILED,
+ GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN
+};
+
+/**
+ * GstVaapiDecoder:
+ *
+ * A VA decoder base instance.
+ */
+struct _GstVaapiDecoder {
+ /*< private >*/
+ GObject parent_instance;
+
+ GstVaapiDecoderPrivate *priv;
+};
+
+/**
+ * GstVaapiDecoderClass:
+ * @decode: decode one frame.
+ *
+ * A VA decoder base class.
+ */
+struct _GstVaapiDecoderClass {
+ /*< private >*/
+ GObjectClass parent_class;
+
+ GstVaapiDecoderStatus (*decode)(GstVaapiDecoder *decoder);
+};
+
+GType
+gst_vaapi_decoder_get_type(void);
+
+gboolean
+gst_vaapi_decoder_put_buffer_data(
+ GstVaapiDecoder *decoder,
+ const guchar *buf,
+ guint buf_size
+);
+
+gboolean
+gst_vaapi_decoder_put_buffer_data_copy(
+ GstVaapiDecoder *decoder,
+ const guchar *buf,
+ guint buf_size
+);
+
+gboolean
+gst_vaapi_decoder_put_buffer(GstVaapiDecoder *decoder, GstBuffer *buf);
+
+GstVaapiSurfaceProxy *
+gst_vaapi_decoder_get_surface(
+ GstVaapiDecoder *decoder,
+ GstVaapiDecoderStatus *pstatus
+);
+
+GstVaapiSurfaceProxy *
+gst_vaapi_decoder_timed_get_surface(
+ GstVaapiDecoder *decoder,
+ guint32 timeout,
+ GstVaapiDecoderStatus *pstatus
+);
+
+G_END_DECLS
+
+#endif /* GST_VAAPI_DECODER_H */
--- /dev/null
+/*
+ * gstvaapidecoder_ffmpeg.c - FFmpeg-based decoder
+ *
+ * gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+/**
+ * SECTION:gstvaapidecoder_ffmpeg
+ * @short_description: FFmpeg-based decoder
+ */
+
+#include "config.h"
+#include <libavcodec/avcodec.h>
+#include <libavcodec/vaapi.h>
+#include <libavformat/avformat.h>
+#include "gstvaapidecoder_ffmpeg.h"
+#include "gstvaapidecoder_priv.h"
+#include "gstvaapidisplay_priv.h"
+#include "gstvaapiobject_priv.h"
+
+#define DEBUG 1
+#include "gstvaapidebug.h"
+
+G_DEFINE_TYPE(GstVaapiDecoderFfmpeg,
+ gst_vaapi_decoder_ffmpeg,
+ GST_VAAPI_TYPE_DECODER);
+
+#define GST_VAAPI_DECODER_FFMPEG_GET_PRIVATE(obj) \
+ (G_TYPE_INSTANCE_GET_PRIVATE((obj), \
+ GST_VAAPI_TYPE_DECODER_FFMPEG, \
+ GstVaapiDecoderFfmpegPrivate))
+
+/** Default I/O buffer size (32 KB) */
+#define DEFAULT_IOBUF_SIZE (32 * 1024)
+
+typedef struct _GstVaapiContextFfmpeg GstVaapiContextFfmpeg;
+struct _GstVaapiContextFfmpeg {
+ struct vaapi_context base;
+ GstVaapiDecoderFfmpeg *decoder;
+};
+
+struct _GstVaapiDecoderFfmpegPrivate {
+ AVPacket packet;
+ AVFrame *frame;
+ guchar *iobuf;
+ guint iobuf_pos;
+ guint iobuf_size;
+ ByteIOContext ioctx;
+ AVFormatContext *fmtctx;
+ AVCodecContext *avctx;
+ GstVaapiContextFfmpeg *vactx;
+ guint video_stream_index;
+ guint is_constructed : 1;
+};
+
+/** Converts codec to FFmpeg codec id */
+static enum CodecID
+get_codec_id_from_codec(GstVaapiCodec codec)
+{
+ switch (codec) {
+ case GST_VAAPI_CODEC_MPEG1: return CODEC_ID_MPEG1VIDEO;
+ case GST_VAAPI_CODEC_MPEG2: return CODEC_ID_MPEG2VIDEO;
+ case GST_VAAPI_CODEC_MPEG4: return CODEC_ID_MPEG4;
+ case GST_VAAPI_CODEC_H263: return CODEC_ID_H263;
+ case GST_VAAPI_CODEC_H264: return CODEC_ID_H264;
+ case GST_VAAPI_CODEC_VC1: return CODEC_ID_VC1;
+ }
+ return CODEC_ID_NONE;
+}
+
+/** Converts codec to FFmpeg raw bitstream format */
+static const gchar *
+get_raw_format_from_codec(GstVaapiCodec codec)
+{
+ switch (codec) {
+ case GST_VAAPI_CODEC_MPEG1: return "mpegvideo";
+ case GST_VAAPI_CODEC_MPEG2: return "mpegvideo";
+ case GST_VAAPI_CODEC_MPEG4: return "m4v";
+ case GST_VAAPI_CODEC_H263: return "h263";
+ case GST_VAAPI_CODEC_H264: return "h264";
+ case GST_VAAPI_CODEC_VC1: return "vc1";
+ }
+ return NULL;
+}
+
+/** Finds a suitable profile from FFmpeg context */
+static GstVaapiProfile
+get_profile(AVCodecContext *avctx)
+{
+ GstVaapiContextFfmpeg * const vactx = avctx->hwaccel_context;
+ GstVaapiDisplay *display;
+ GstVaapiProfile test_profiles[4];
+ guint i, n_profiles = 0;
+
+#define ADD_PROFILE(profile) do { \
+ test_profiles[n_profiles++] = GST_VAAPI_PROFILE_##profile; \
+ } while (0)
+
+ switch (avctx->codec_id) {
+ case CODEC_ID_MPEG1VIDEO:
+ ADD_PROFILE(MPEG1);
+ break;
+ case CODEC_ID_MPEG2VIDEO:
+ ADD_PROFILE(MPEG2_MAIN);
+ ADD_PROFILE(MPEG2_SIMPLE);
+ break;
+ case CODEC_ID_H263:
+ ADD_PROFILE(H263_BASELINE);
+ /* fall-through */
+ case CODEC_ID_MPEG4:
+ ADD_PROFILE(MPEG4_MAIN);
+ ADD_PROFILE(MPEG4_ADVANCED_SIMPLE);
+ ADD_PROFILE(MPEG4_SIMPLE);
+ break;
+ case CODEC_ID_H264:
+ if (avctx->profile == 66) /* baseline */
+ ADD_PROFILE(H264_BASELINE);
+ else {
+ if (avctx->profile == 77) /* main */
+ ADD_PROFILE(H264_MAIN);
+ ADD_PROFILE(H264_HIGH);
+ }
+ break;
+ case CODEC_ID_WMV3:
+ if (avctx->profile == 0) /* simple */
+ ADD_PROFILE(VC1_SIMPLE);
+ ADD_PROFILE(VC1_MAIN);
+ break;
+ case CODEC_ID_VC1:
+ ADD_PROFILE(VC1_ADVANCED);
+ break;
+ default:
+ break;
+ }
+
+#undef ADD_PROFILE
+
+ display = GST_VAAPI_DECODER_DISPLAY(vactx->decoder);
+ if (!display)
+ return 0;
+
+ for (i = 0; i < n_profiles; i++)
+ if (gst_vaapi_display_has_decoder(display, test_profiles[i]))
+ return test_profiles[i];
+ return 0;
+}
+
+/** Probes FFmpeg format from input stream */
+static AVInputFormat *
+get_probed_format(GstVaapiDecoder *decoder)
+{
+ GstVaapiDecoderFfmpegPrivate * const priv =
+ GST_VAAPI_DECODER_FFMPEG(decoder)->priv;
+
+ AVProbeData pd;
+ pd.filename = "";
+ pd.buf = priv->iobuf;
+ pd.buf_size = MIN(gst_vaapi_decoder_read_avail(decoder), priv->iobuf_size);
+ if (!gst_vaapi_decoder_copy(decoder, 0, pd.buf, pd.buf_size))
+ return FALSE;
+
+ GST_DEBUG("probing format from buffer %p [%d bytes]", pd.buf, pd.buf_size);
+ return av_probe_input_format(&pd, 1);
+}
+
+/** Tries to get an FFmpeg format from the raw bitstream */
+static AVInputFormat *
+get_raw_format(GstVaapiDecoder *decoder)
+{
+ const gchar *raw_format;
+
+ raw_format = get_raw_format_from_codec(GST_VAAPI_DECODER_CODEC(decoder));
+ if (!raw_format)
+ return NULL;
+
+ GST_DEBUG("trying raw format %s", raw_format);
+ return av_find_input_format(raw_format);
+}
+
+/** Reads one packet */
+static int
+stream_read(void *opaque, uint8_t *buf, int buf_size)
+{
+ GstVaapiDecoder * const decoder = GST_VAAPI_DECODER(opaque);
+ GstVaapiDecoderFfmpegPrivate * const priv =
+ GST_VAAPI_DECODER_FFMPEG(decoder)->priv;
+
+ if (buf_size > 0) {
+ if (priv->is_constructed) {
+ buf_size = gst_vaapi_decoder_read(decoder, buf, buf_size);
+ }
+ else {
+ buf_size = gst_vaapi_decoder_copy(
+ decoder,
+ priv->iobuf_pos,
+ buf, buf_size
+ );
+ priv->iobuf_pos += buf_size;
+ }
+ }
+ return buf_size;
+}
+
+/** Seeks into stream */
+static int64_t
+stream_seek(void *opaque, int64_t offset, int whence)
+{
+ GstVaapiDecoder * const decoder = GST_VAAPI_DECODER(opaque);
+ GstVaapiDecoderFfmpegPrivate * const priv =
+ GST_VAAPI_DECODER_FFMPEG(decoder)->priv;
+
+ /* If we parsed the headers (decoder is constructed), we can no
+ longer seek into the stream */
+ if (priv->is_constructed &&
+ !((whence == SEEK_SET || whence == SEEK_CUR) && offset == 0))
+ return -1;
+
+ switch (whence) {
+ case SEEK_SET:
+ priv->iobuf_pos = offset;
+ break;
+ case SEEK_CUR:
+ priv->iobuf_pos += offset;
+ break;
+ case SEEK_END:
+ priv->iobuf_pos = gst_vaapi_decoder_read_avail(decoder) + offset;
+ break;
+ default:
+ return -1;
+ }
+ return priv->iobuf_pos;
+}
+
+/** AVCodecContext.get_format() implementation */
+static enum PixelFormat
+gst_vaapi_decoder_ffmpeg_get_format(AVCodecContext *avctx, const enum PixelFormat *fmt)
+{
+ GstVaapiContextFfmpeg * const vactx = avctx->hwaccel_context;
+ GstVaapiDecoder * const decoder = GST_VAAPI_DECODER(vactx->decoder);
+ GstVaapiProfile profile;
+ gboolean success;
+ guint i;
+
+ profile = get_profile(avctx);
+ if (!profile)
+ return PIX_FMT_NONE;
+
+ /* XXX: only VLD entrypoint is supported at this time */
+ for (i = 0; fmt[i] != PIX_FMT_NONE; i++)
+ if (fmt[i] == PIX_FMT_VAAPI_VLD)
+ break;
+
+ success = gst_vaapi_decoder_ensure_context(
+ decoder,
+ profile,
+ GST_VAAPI_ENTRYPOINT_VLD,
+ avctx->width, avctx->height
+ );
+ if (success) {
+ GstVaapiDisplay * const display = GST_VAAPI_DECODER_DISPLAY(decoder);
+ GstVaapiContext * const context = GST_VAAPI_DECODER_CONTEXT(decoder);
+ vactx->base.display = GST_VAAPI_DISPLAY_VADISPLAY(display);
+ vactx->base.context_id = GST_VAAPI_OBJECT_ID(context);
+ return fmt[i];
+ }
+ return PIX_FMT_NONE;
+}
+
+/** AVCodecContext.get_buffer() implementation */
+static int
+gst_vaapi_decoder_ffmpeg_get_buffer(AVCodecContext *avctx, AVFrame *pic)
+{
+ GstVaapiContextFfmpeg * const vactx = avctx->hwaccel_context;
+ GstVaapiContext * const context = GST_VAAPI_DECODER_CONTEXT(vactx->decoder);
+ GstVaapiSurface *surface;
+ GstVaapiID surface_id;
+
+ surface = gst_vaapi_context_get_surface(context);
+ if (!surface) {
+ GST_DEBUG("failed to get a free VA surface");
+ return -1;
+ }
+
+ surface_id = GST_VAAPI_OBJECT_ID(surface);
+ GST_DEBUG("surface %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS(surface_id));
+
+ pic->type = FF_BUFFER_TYPE_USER;
+ pic->age = 1;
+ pic->data[0] = (uint8_t *)surface;
+ pic->data[1] = NULL;
+ pic->data[2] = NULL;
+ pic->data[3] = (uint8_t *)(uintptr_t)surface_id;
+ pic->linesize[0] = 0;
+ pic->linesize[1] = 0;
+ pic->linesize[2] = 0;
+ pic->linesize[3] = 0;
+ return 0;
+}
+
+/** AVCodecContext.reget_buffer() implementation */
+static int
+gst_vaapi_decoder_ffmpeg_reget_buffer(AVCodecContext *avctx, AVFrame *pic)
+{
+ GST_DEBUG("UNIMPLEMENTED");
+ return -1;
+}
+
+/** AVCodecContext.release_buffer() implementation */
+static void
+gst_vaapi_decoder_ffmpeg_release_buffer(AVCodecContext *avctx, AVFrame *pic)
+{
+ GstVaapiID surface_id = GST_VAAPI_ID(GPOINTER_TO_UINT(pic->data[3]));
+
+ GST_DEBUG("surface %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS(surface_id));
+
+ pic->data[0] = NULL;
+ pic->data[1] = NULL;
+ pic->data[2] = NULL;
+ pic->data[3] = NULL;
+}
+
+static void
+gst_vaapi_decoder_ffmpeg_destroy(GstVaapiDecoderFfmpeg *ffdecoder)
+{
+ GstVaapiDecoderFfmpegPrivate * const priv = ffdecoder->priv;
+
+ if (priv->avctx) {
+ avcodec_close(priv->avctx);
+ priv->avctx = NULL;
+ }
+
+ if (priv->vactx) {
+ g_free(priv->vactx);
+ priv->vactx = NULL;
+ }
+
+ if (priv->fmtctx) {
+ av_close_input_stream(priv->fmtctx);
+ priv->fmtctx = NULL;
+ }
+
+ if (priv->iobuf) {
+ g_free(priv->iobuf);
+ priv->iobuf = NULL;
+ priv->iobuf_pos = 0;
+ }
+
+ av_freep(&priv->frame);
+ av_free_packet(&priv->packet);
+}
+
+static gboolean
+gst_vaapi_decoder_ffmpeg_create(GstVaapiDecoderFfmpeg *ffdecoder)
+{
+ GstVaapiDecoder * const decoder = GST_VAAPI_DECODER(ffdecoder);
+ GstVaapiDecoderFfmpegPrivate * const priv = ffdecoder->priv;
+ GstVaapiCodec codec = GST_VAAPI_DECODER_CODEC(decoder);
+ enum CodecID codec_id = get_codec_id_from_codec(codec);
+ typedef AVInputFormat *(*GetFormatFunc)(GstVaapiDecoder *);
+ GetFormatFunc get_format[2];
+ AVInputFormat *format;
+ AVStream *video_stream;
+ AVCodec *ffcodec;
+ guint i;
+
+ if (!priv->vactx) {
+ priv->vactx = g_new(GstVaapiContextFfmpeg, 1);
+ if (!priv->vactx)
+ return FALSE;
+ }
+ memset(&priv->vactx->base, 0, sizeof(priv->vactx->base));
+ priv->vactx->decoder = ffdecoder;
+
+ if (!priv->frame) {
+ priv->frame = avcodec_alloc_frame();
+ if (!priv->frame)
+ return FALSE;
+ }
+
+ if (!priv->iobuf) {
+ priv->iobuf = g_malloc0(priv->iobuf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!priv->iobuf)
+ return FALSE;
+ }
+
+ get_format[ !codec] = get_raw_format;
+ get_format[!!codec] = get_probed_format;
+ for (i = 0; i < 2; i++) {
+ format = get_format[i](decoder);
+ if (!format)
+ continue;
+
+ priv->iobuf_pos = 0;
+ init_put_byte(
+ &priv->ioctx,
+ priv->iobuf,
+ priv->iobuf_size,
+ 0, /* write flags */
+ ffdecoder,
+ stream_read,
+ NULL, /* no packet writer callback */
+ stream_seek
+ );
+ priv->ioctx.is_streamed = 1;
+
+ if (av_open_input_stream(&priv->fmtctx, &priv->ioctx, "", format, NULL) < 0)
+ continue;
+
+ if (av_find_stream_info(priv->fmtctx) >= 0)
+ break;
+
+ av_close_input_stream(priv->fmtctx);
+ priv->fmtctx = NULL;
+ }
+ if (!priv->fmtctx)
+ return FALSE;
+
+ if (av_find_stream_info(priv->fmtctx) < 0)
+ return FALSE;
+ dump_format(priv->fmtctx, 0, "", 0);
+
+ video_stream = NULL;
+ for (i = 0; i < priv->fmtctx->nb_streams; i++) {
+ AVStream * const stream = priv->fmtctx->streams[i];
+ if (!video_stream &&
+ stream->codec->codec_type == CODEC_TYPE_VIDEO &&
+ (codec ? (stream->codec->codec_id == codec_id) : 1)) {
+ video_stream = stream;
+ }
+ else
+ stream->discard = AVDISCARD_ALL;
+ }
+ if (!video_stream)
+ return FALSE;
+
+ priv->video_stream_index = video_stream->index;
+ priv->avctx = video_stream->codec;
+ priv->avctx->hwaccel_context = priv->vactx;
+ priv->avctx->get_format = gst_vaapi_decoder_ffmpeg_get_format;
+ priv->avctx->get_buffer = gst_vaapi_decoder_ffmpeg_get_buffer;
+ priv->avctx->reget_buffer = gst_vaapi_decoder_ffmpeg_reget_buffer;
+ priv->avctx->release_buffer = gst_vaapi_decoder_ffmpeg_release_buffer;
+ priv->avctx->thread_count = 1;
+ priv->avctx->draw_horiz_band = NULL;
+ priv->avctx->slice_flags = SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;
+
+ ffcodec = avcodec_find_decoder(priv->avctx->codec_id);
+ if (!ffcodec || avcodec_open(priv->avctx, ffcodec) < 0)
+ return FALSE;
+
+ av_init_packet(&priv->packet);
+ return TRUE;
+}
+
+static GstVaapiSurface *
+decode_frame(GstVaapiDecoderFfmpeg *ffdecoder, guchar *buf, guint buf_size)
+{
+ GstVaapiDecoderFfmpegPrivate * const priv = ffdecoder->priv;
+ GstVaapiDisplay * const display = GST_VAAPI_DECODER_DISPLAY(ffdecoder);
+ GstVaapiSurface *surface = NULL;
+ int got_picture = 0;
+
+ GST_VAAPI_DISPLAY_LOCK(display);
+ avcodec_decode_video(
+ priv->avctx,
+ priv->frame,
+ &got_picture,
+ buf, buf_size
+ );
+ GST_VAAPI_DISPLAY_UNLOCK(display);
+
+ if (got_picture) {
+ surface = gst_vaapi_context_find_surface_by_id(
+ GST_VAAPI_DECODER_CONTEXT(ffdecoder),
+ GPOINTER_TO_UINT(priv->frame->data[3])
+ );
+ }
+ return surface;
+}
+
+GstVaapiDecoderStatus
+gst_vaapi_decoder_ffmpeg_decode(GstVaapiDecoder *decoder)
+{
+ GstVaapiDecoderFfmpeg * const ffdecoder = GST_VAAPI_DECODER_FFMPEG(decoder);
+ GstVaapiDecoderFfmpegPrivate * const priv = ffdecoder->priv;
+ GstVaapiSurface *surface = NULL;
+ AVPacket packet;
+
+ if (!priv->is_constructed) {
+ priv->is_constructed = gst_vaapi_decoder_ffmpeg_create(ffdecoder);
+ if (!priv->is_constructed) {
+ gst_vaapi_decoder_ffmpeg_destroy(ffdecoder);
+ return GST_VAAPI_DECODER_STATUS_ERROR_INIT_FAILED;
+ }
+ }
+
+ av_init_packet(&packet);
+ while (av_read_frame(priv->fmtctx, &packet) == 0) {
+ if (packet.stream_index != priv->video_stream_index)
+ continue;
+
+ surface = decode_frame(ffdecoder, packet.data, packet.size);
+ if (surface) /* decode a single frame only */
+ break;
+ }
+ if (!surface)
+ surface = decode_frame(ffdecoder, NULL, 0);
+ av_free_packet(&packet);
+
+ if (surface && gst_vaapi_decoder_push_surface(decoder, surface))
+ return GST_VAAPI_DECODER_STATUS_SUCCESS;
+ return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
+}
+
+static void
+gst_vaapi_decoder_ffmpeg_finalize(GObject *object)
+{
+ GstVaapiDecoderFfmpeg * const ffdecoder = GST_VAAPI_DECODER_FFMPEG(object);
+
+ gst_vaapi_decoder_ffmpeg_destroy(ffdecoder);
+
+ G_OBJECT_CLASS(gst_vaapi_decoder_ffmpeg_parent_class)->finalize(object);
+}
+
+static void
+gst_vaapi_decoder_ffmpeg_class_init(GstVaapiDecoderFfmpegClass *klass)
+{
+ GObjectClass * const object_class = G_OBJECT_CLASS(klass);
+ GstVaapiDecoderClass * const decoder_class = GST_VAAPI_DECODER_CLASS(klass);
+
+ g_type_class_add_private(klass, sizeof(GstVaapiDecoderFfmpegPrivate));
+
+ object_class->finalize = gst_vaapi_decoder_ffmpeg_finalize;
+
+ decoder_class->decode = gst_vaapi_decoder_ffmpeg_decode;
+}
+
+static gpointer
+gst_vaapi_decoder_ffmpeg_init_once_cb(gpointer user_data)
+{
+ av_register_all();
+ return NULL;
+}
+
+static inline void
+gst_vaapi_decoder_ffmpeg_init_once(void)
+{
+ static GOnce once = G_ONCE_INIT;
+
+ g_once(&once, gst_vaapi_decoder_ffmpeg_init_once_cb, NULL);
+}
+
+static void
+gst_vaapi_decoder_ffmpeg_init(GstVaapiDecoderFfmpeg *decoder)
+{
+ GstVaapiDecoderFfmpegPrivate *priv;
+
+ gst_vaapi_decoder_ffmpeg_init_once();
+
+ priv = GST_VAAPI_DECODER_FFMPEG_GET_PRIVATE(decoder);
+ decoder->priv = priv;
+ priv->frame = NULL;
+ priv->iobuf = NULL;
+ priv->iobuf_pos = 0;
+ priv->iobuf_size = DEFAULT_IOBUF_SIZE;
+ priv->fmtctx = NULL;
+ priv->avctx = NULL;
+ priv->vactx = NULL;
+ priv->video_stream_index = 0;
+ priv->is_constructed = FALSE;
+
+ av_init_packet(&priv->packet);
+}
+
+/**
+ * gst_vaapi_decoder_ffmpeg_new:
+ * @display: a #GstVaapiDisplay
+ * @codec: a #GstVaapiCodec
+ *
+ * Creates a new #GstVaapiDecoder with the specified @codec bound to
+ * @display. If @codec is zero, the first video stream will be
+ * selected. Otherwise, the first video stream matching @codec is
+ * used, if any.
+ *
+ * Return value: the newly allocated #GstVaapiDecoder object
+ */
+GstVaapiDecoder *
+gst_vaapi_decoder_ffmpeg_new(GstVaapiDisplay *display, GstVaapiCodec codec)
+{
+ g_return_val_if_fail(GST_VAAPI_IS_DISPLAY(display), NULL);
+
+ return g_object_new(GST_VAAPI_TYPE_DECODER_FFMPEG,
+ "display", display,
+ "codec", codec,
+ NULL);
+}
--- /dev/null
+/*
+ * gstvaapidecoder_ffmpeg.h - FFmpeg-based decoder
+ *
+ * gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef GST_VAAPI_DECODER_FFMPEG_H
+#define GST_VAAPI_DECODER_FFMPEG_H
+
+#include <gst/vaapi/gstvaapidecoder.h>
+
+G_BEGIN_DECLS
+
+#define GST_VAAPI_TYPE_DECODER_FFMPEG \
+ (gst_vaapi_decoder_ffmpeg_get_type())
+
+#define GST_VAAPI_DECODER_FFMPEG(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj), \
+ GST_VAAPI_TYPE_DECODER_FFMPEG, \
+ GstVaapiDecoderFfmpeg))
+
+#define GST_VAAPI_DECODER_FFMPEG_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass), \
+ GST_VAAPI_TYPE_DECODER_FFMPEG, \
+ GstVaapiDecoderFfmpegClass))
+
+#define GST_VAAPI_IS_DECODER_FFMPEG(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_VAAPI_TYPE_DECODER_FFMPEG))
+
+#define GST_VAAPI_IS_DECODER_FFMPEG_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass), GST_VAAPI_TYPE_DECODER_FFMPEG))
+
+#define GST_VAAPI_DECODER_FFMPEG_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS((obj), \
+ GST_VAAPI_TYPE_DECODER_FFMPEG, \
+ GstVaapiDecoderFfmpegClass))
+
+typedef struct _GstVaapiDecoderFfmpeg GstVaapiDecoderFfmpeg;
+typedef struct _GstVaapiDecoderFfmpegPrivate GstVaapiDecoderFfmpegPrivate;
+typedef struct _GstVaapiDecoderFfmpegClass GstVaapiDecoderFfmpegClass;
+
+/**
+ * GstVaapiDecoderFfmpeg:
+ *
+ * A decoder based on FFmpeg.
+ */
+struct _GstVaapiDecoderFfmpeg {
+ /*< private >*/
+ GstVaapiDecoder parent_instance;
+
+ GstVaapiDecoderFfmpegPrivate *priv;
+};
+
+/**
+ * GstVaapiDecoderFfmpegClass:
+ *
+ * A decoder class based on FFmpeg.
+ */
+struct _GstVaapiDecoderFfmpegClass {
+ /*< private >*/
+ GstVaapiDecoderClass parent_class;
+};
+
+GType
+gst_vaapi_decoder_ffmpeg_get_type(void);
+
+GstVaapiDecoder *
+gst_vaapi_decoder_ffmpeg_new(GstVaapiDisplay *display, GstVaapiCodec codec);
+
+G_END_DECLS
+
+#endif /* GST_VAAPI_DECODER_FFMPEG_H */
--- /dev/null
+/*
+ * gstvaapidecoder_priv.h - VA decoder abstraction (private definitions)
+ *
+ * gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef GST_VAAPI_DECODER_PRIV_H
+#define GST_VAAPI_DECODER_PRIV_H
+
+#include <glib.h>
+#include <gst/base/gstadapter.h>
+#include <gst/vaapi/gstvaapidecoder.h>
+#include <gst/vaapi/gstvaapicontext.h>
+
+G_BEGIN_DECLS
+
+#define GST_VAAPI_DECODER_CAST(decoder) ((GstVaapiDecoder *)(decoder))
+
+/**
+ * GST_VAAPI_DECODER_DISPLAY:
+ * @decoder: a #GstVaapiDecoder
+ *
+ * Macro that evaluates to the #GstVaapiDisplay of @decoder.
+ * This is an internal macro that does not do any run-time type check.
+ */
+#undef GST_VAAPI_DECODER_DISPLAY
+#define GST_VAAPI_DECODER_DISPLAY(decoder) \
+ GST_VAAPI_DECODER_CAST(decoder)->priv->display
+
+/**
+ * GST_VAAPI_DECODER_CONTEXT:
+ * @decoder: a #GstVaapiDecoder
+ *
+ * Macro that evaluates to the #GstVaapiContext of @decoder.
+ * This is an internal macro that does not do any run-time type check.
+ */
+#undef GST_VAAPI_DECODER_CONTEXT
+#define GST_VAAPI_DECODER_CONTEXT(decoder) \
+ GST_VAAPI_DECODER_CAST(decoder)->priv->context
+
+/**
+ * GST_VAAPI_DECODER_CODEC:
+ * @decoder: a #GstVaapiDecoder
+ *
+ * Macro that evaluates to the #GstVaapiCodec of @decoder.
+ * This is an internal macro that does not do any run-time type check.
+ */
+#undef GST_VAAPI_DECODER_CODEC
+#define GST_VAAPI_DECODER_CODEC(decoder) \
+ GST_VAAPI_DECODER_CAST(decoder)->priv->codec
+
+#define GST_VAAPI_DECODER_GET_PRIVATE(obj) \
+ (G_TYPE_INSTANCE_GET_PRIVATE((obj), \
+ GST_VAAPI_TYPE_DECODER, \
+ GstVaapiDecoderPrivate))
+
+struct _GstVaapiDecoderPrivate {
+ GstVaapiDisplay *display;
+ GstVaapiContext *context;
+ GstVaapiCodec codec;
+ GstAdapter *adapter;
+ GMutex *adapter_mutex;
+ GCond *adapter_cond;
+ GQueue surfaces;
+ GMutex *surfaces_mutex;
+ GCond *surfaces_cond;
+ GThread *decoder_thread;
+ guint decoder_thread_cancel : 1;
+};
+
+gboolean
+gst_vaapi_decoder_ensure_context(
+ GstVaapiDecoder *decoder,
+ GstVaapiProfile profile,
+ GstVaapiEntrypoint entrypoint,
+ guint width,
+ guint height
+) attribute_hidden;
+
+guint
+gst_vaapi_decoder_copy(
+ GstVaapiDecoder *decoder,
+ guint offset,
+ guchar *buf,
+ guint buf_size
+) attribute_hidden;
+
+guint
+gst_vaapi_decoder_read_avail(GstVaapiDecoder *decoder)
+ attribute_hidden;
+
+guint
+gst_vaapi_decoder_read(GstVaapiDecoder *decoder, guchar *buf, guint buf_size)
+ attribute_hidden;
+
+void
+gst_vaapi_decoder_flush(GstVaapiDecoder *decoder, guint buf_size)
+ attribute_hidden;
+
+gboolean
+gst_vaapi_decoder_push_surface(
+ GstVaapiDecoder *decoder,
+ GstVaapiSurface *surface
+) attribute_hidden;
+
+G_END_DECLS
+
+#endif /* GST_VAAPI_DECODER_PRIV_H */
+
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