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gstreamer/gst-libs/gst/vaapi/gstvaapidecoder.c
Gwenole Beauchesne 0eb4070977 context: introduce concept of usage. 
Introduce GstVaapiContextUsage so that to explicitly determine the
usage of a VA context. This is useful in view to simplifying the
creation of VA context for VPP too.
2014-01-23 14:29:09 +01:00

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/*
* gstvaapidecoder.c - VA decoder abstraction
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
* Author: Gwenole Beauchesne <gwenole.beauchesne@splitted-desktop.com>
* Copyright (C) 2011-2014 Intel Corporation
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library 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.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; 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 "sysdeps.h"
#include "gstvaapicompat.h"
#include "gstvaapidecoder.h"
#include "gstvaapidecoder_priv.h"
#include "gstvaapiparser_frame.h"
#include "gstvaapisurfaceproxy_priv.h"
#include "gstvaapiutils.h"
#define DEBUG 1
#include "gstvaapidebug.h"
static void
drop_frame(GstVaapiDecoder *decoder, GstVideoCodecFrame *frame);
static void
parser_state_finalize(GstVaapiParserState *ps)
{
if (ps->input_adapter) {
gst_adapter_clear(ps->input_adapter);
g_object_unref(ps->input_adapter);
ps->input_adapter = NULL;
}
if (ps->output_adapter) {
gst_adapter_clear(ps->output_adapter);
g_object_unref(ps->output_adapter);
ps->output_adapter = NULL;
}
if (ps->next_unit_pending) {
gst_vaapi_decoder_unit_clear(&ps->next_unit);
ps->next_unit_pending = FALSE;
}
}
static gboolean
parser_state_init(GstVaapiParserState *ps)
{
memset(ps, 0, sizeof(*ps));
ps->input_adapter = gst_adapter_new();
if (!ps->input_adapter)
return FALSE;
ps->output_adapter = gst_adapter_new();
if (!ps->output_adapter)
return FALSE;
return TRUE;
}
static void
parser_state_prepare(GstVaapiParserState *ps, GstAdapter *adapter)
{
/* XXX: check we really have a continuity from the previous call */
if (ps->current_adapter != adapter)
goto reset;
return;
reset:
ps->current_adapter = adapter;
ps->input_offset1 = -1;
ps->input_offset2 = -1;
}
static gboolean
push_buffer(GstVaapiDecoder *decoder, GstBuffer *buffer)
{
if (!buffer) {
buffer = gst_buffer_new();
if (!buffer)
return FALSE;
GST_BUFFER_FLAG_SET(buffer, GST_BUFFER_FLAG_EOS);
}
GST_DEBUG("queue encoded data buffer %p (%zu bytes)",
buffer, gst_buffer_get_size(buffer));
g_async_queue_push(decoder->buffers, buffer);
return TRUE;
}
static GstBuffer *
pop_buffer(GstVaapiDecoder *decoder)
{
GstBuffer *buffer;
buffer = g_async_queue_try_pop(decoder->buffers);
if (!buffer)
return NULL;
GST_DEBUG("dequeue buffer %p for decoding (%zu bytes)",
buffer, gst_buffer_get_size(buffer));
return buffer;
}
static GstVaapiDecoderStatus
do_parse(GstVaapiDecoder *decoder,
GstVideoCodecFrame *base_frame, GstAdapter *adapter, gboolean at_eos,
guint *got_unit_size_ptr, gboolean *got_frame_ptr)
{
GstVaapiParserState * const ps = &decoder->parser_state;
GstVaapiParserFrame *frame;
GstVaapiDecoderUnit *unit;
GstVaapiDecoderStatus status;
*got_unit_size_ptr = 0;
*got_frame_ptr = FALSE;
frame = gst_video_codec_frame_get_user_data(base_frame);
if (!frame) {
GstVideoCodecState * const codec_state = decoder->codec_state;
frame = gst_vaapi_parser_frame_new(codec_state->info.width,
codec_state->info.height);
if (!frame)
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
gst_video_codec_frame_set_user_data(base_frame,
frame, (GDestroyNotify)gst_vaapi_mini_object_unref);
}
parser_state_prepare(ps, adapter);
unit = &ps->next_unit;
if (ps->next_unit_pending) {
ps->next_unit_pending = FALSE;
goto got_unit;
}
gst_vaapi_decoder_unit_init(unit);
ps->current_frame = base_frame;
status = GST_VAAPI_DECODER_GET_CLASS(decoder)->parse(decoder,
adapter, at_eos, unit);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) {
if (at_eos && frame->units->len > 0 &&
status == GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA) {
/* XXX: assume the frame is complete at <EOS> */
*got_frame_ptr = TRUE;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
return status;
}
if (GST_VAAPI_DECODER_UNIT_IS_FRAME_START(unit) && frame->units->len > 0) {
ps->next_unit_pending = TRUE;
*got_frame_ptr = TRUE;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
got_unit:
gst_vaapi_parser_frame_append_unit(frame, unit);
*got_unit_size_ptr = unit->size;
*got_frame_ptr = GST_VAAPI_DECODER_UNIT_IS_FRAME_END(unit);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
do_decode_units(GstVaapiDecoder *decoder, GArray *units)
{
GstVaapiDecoderClass * const klass = GST_VAAPI_DECODER_GET_CLASS(decoder);
GstVaapiDecoderStatus status;
guint i;
for (i = 0; i < units->len; i++) {
GstVaapiDecoderUnit * const unit =
&g_array_index(units, GstVaapiDecoderUnit, i);
if (GST_VAAPI_DECODER_UNIT_IS_SKIPPED(unit))
continue;
status = klass->decode(decoder, unit);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
}
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
do_decode_1(GstVaapiDecoder *decoder, GstVaapiParserFrame *frame)
{
GstVaapiDecoderClass * const klass = GST_VAAPI_DECODER_GET_CLASS(decoder);
GstVaapiDecoderStatus status;
if (frame->pre_units->len > 0) {
status = do_decode_units(decoder, frame->pre_units);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
}
if (frame->units->len > 0) {
if (klass->start_frame) {
GstVaapiDecoderUnit * const unit =
&g_array_index(frame->units, GstVaapiDecoderUnit, 0);
status = klass->start_frame(decoder, unit);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
}
status = do_decode_units(decoder, frame->units);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
if (klass->end_frame) {
status = klass->end_frame(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
}
}
if (frame->post_units->len > 0) {
status = do_decode_units(decoder, frame->post_units);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
}
/* Drop frame if there is no slice data unit in there */
if (G_UNLIKELY(frame->units->len == 0))
return GST_VAAPI_DECODER_STATUS_DROP_FRAME;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static inline GstVaapiDecoderStatus
do_decode(GstVaapiDecoder *decoder, GstVideoCodecFrame *base_frame)
{
GstVaapiParserState * const ps = &decoder->parser_state;
GstVaapiParserFrame * const frame = base_frame->user_data;
GstVaapiDecoderStatus status;
ps->current_frame = base_frame;
gst_vaapi_parser_frame_ref(frame);
status = do_decode_1(decoder, frame);
gst_vaapi_parser_frame_unref(frame);
switch ((guint)status) {
case GST_VAAPI_DECODER_STATUS_DROP_FRAME:
drop_frame(decoder, base_frame);
status = GST_VAAPI_DECODER_STATUS_SUCCESS;
break;
}
return status;
}
static inline GstVaapiDecoderStatus
do_flush(GstVaapiDecoder *decoder)
{
GstVaapiDecoderClass * const klass = GST_VAAPI_DECODER_GET_CLASS(decoder);
if (klass->flush)
return klass->flush(decoder);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
decode_step(GstVaapiDecoder *decoder)
{
GstVaapiParserState * const ps = &decoder->parser_state;
GstVaapiDecoderStatus status;
GstBuffer *buffer;
gboolean got_frame;
guint got_unit_size, input_size;
status = gst_vaapi_decoder_check_status(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
/* Fill adapter with all buffers we have in the queue */
for (;;) {
buffer = pop_buffer(decoder);
if (!buffer)
break;
ps->at_eos = GST_BUFFER_IS_EOS(buffer);
if (!ps->at_eos)
gst_adapter_push(ps->input_adapter, buffer);
}
/* Parse and decode all decode units */
input_size = gst_adapter_available(ps->input_adapter);
if (input_size == 0) {
if (ps->at_eos)
return GST_VAAPI_DECODER_STATUS_END_OF_STREAM;
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
}
do {
if (!ps->current_frame) {
ps->current_frame = g_slice_new0(GstVideoCodecFrame);
if (!ps->current_frame)
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
ps->current_frame->ref_count = 1;
ps->current_frame->system_frame_number = ps->current_frame_number++;
}
status = do_parse(decoder, ps->current_frame, ps->input_adapter,
ps->at_eos, &got_unit_size, &got_frame);
GST_DEBUG("parse frame (status = %d)", status);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) {
if (status == GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA && ps->at_eos)
status = GST_VAAPI_DECODER_STATUS_END_OF_STREAM;
break;
}
if (got_unit_size > 0) {
buffer = gst_adapter_take_buffer(ps->input_adapter, got_unit_size);
input_size -= got_unit_size;
if (gst_adapter_available(ps->output_adapter) == 0) {
ps->current_frame->pts =
gst_adapter_prev_timestamp(ps->input_adapter, NULL);
}
gst_adapter_push(ps->output_adapter, buffer);
}
if (got_frame) {
ps->current_frame->input_buffer = gst_adapter_take_buffer(
ps->output_adapter,
gst_adapter_available(ps->output_adapter));
status = do_decode(decoder, ps->current_frame);
GST_DEBUG("decode frame (status = %d)", status);
gst_video_codec_frame_unref(ps->current_frame);
ps->current_frame = NULL;
break;
}
} while (input_size > 0);
return status;
}
static void
drop_frame(GstVaapiDecoder *decoder, GstVideoCodecFrame *frame)
{
GST_DEBUG("drop frame %d", frame->system_frame_number);
/* no surface proxy */
gst_video_codec_frame_set_user_data(frame, NULL, NULL);
frame->pts = GST_CLOCK_TIME_NONE;
GST_VIDEO_CODEC_FRAME_FLAG_SET(frame,
GST_VIDEO_CODEC_FRAME_FLAG_DECODE_ONLY);
g_async_queue_push(decoder->frames, gst_video_codec_frame_ref(frame));
}
static inline void
push_frame(GstVaapiDecoder *decoder, GstVideoCodecFrame *frame)
{
GstVaapiSurfaceProxy * const proxy = frame->user_data;
GST_DEBUG("push frame %d (surface 0x%08x)", frame->system_frame_number,
GST_VAAPI_SURFACE_PROXY_SURFACE_ID(proxy));
g_async_queue_push(decoder->frames, gst_video_codec_frame_ref(frame));
}
static inline GstVideoCodecFrame *
pop_frame(GstVaapiDecoder *decoder, guint64 timeout)
{
GstVideoCodecFrame *frame;
GstVaapiSurfaceProxy *proxy;
if (G_LIKELY(timeout > 0))
frame = g_async_queue_timeout_pop(decoder->frames, timeout);
else
frame = g_async_queue_try_pop(decoder->frames);
if (!frame)
return NULL;
proxy = frame->user_data;
GST_DEBUG("pop frame %d (surface 0x%08x)", frame->system_frame_number,
proxy ? GST_VAAPI_SURFACE_PROXY_SURFACE_ID(proxy) : VA_INVALID_ID);
return frame;
}
static gboolean
set_caps(GstVaapiDecoder *decoder, const GstCaps *caps)
{
GstVideoCodecState * const codec_state = decoder->codec_state;
GstStructure * const structure = gst_caps_get_structure(caps, 0);
GstVaapiProfile profile;
const GValue *v_codec_data;
profile = gst_vaapi_profile_from_caps(caps);
if (!profile)
return FALSE;
decoder->codec = gst_vaapi_profile_get_codec(profile);
if (!decoder->codec)
return FALSE;
if (!gst_video_info_from_caps(&codec_state->info, caps))
return FALSE;
codec_state->caps = gst_caps_copy(caps);
v_codec_data = gst_structure_get_value(structure, "codec_data");
if (v_codec_data)
gst_buffer_replace(&codec_state->codec_data,
gst_value_get_buffer(v_codec_data));
return TRUE;
}
static inline GstCaps *
get_caps(GstVaapiDecoder *decoder)
{
return GST_VAAPI_DECODER_CODEC_STATE(decoder)->caps;
}
static void
notify_codec_state_changed(GstVaapiDecoder *decoder)
{
if (decoder->codec_state_changed_func)
decoder->codec_state_changed_func(decoder, decoder->codec_state,
decoder->codec_state_changed_data);
}
void
gst_vaapi_decoder_finalize(GstVaapiDecoder *decoder)
{
const GstVaapiDecoderClass * const klass =
GST_VAAPI_DECODER_GET_CLASS(decoder);
if (klass->destroy)
klass->destroy(decoder);
gst_video_codec_state_unref(decoder->codec_state);
decoder->codec_state = NULL;
parser_state_finalize(&decoder->parser_state);
if (decoder->buffers) {
g_async_queue_unref(decoder->buffers);
decoder->buffers = NULL;
}
if (decoder->frames) {
g_async_queue_unref(decoder->frames);
decoder->frames = NULL;
}
gst_vaapi_object_replace(&decoder->context, NULL);
decoder->va_context = VA_INVALID_ID;
gst_vaapi_display_replace(&decoder->display, NULL);
decoder->va_display = NULL;
}
static gboolean
gst_vaapi_decoder_init(GstVaapiDecoder *decoder, GstVaapiDisplay *display,
GstCaps *caps)
{
const GstVaapiDecoderClass * const klass =
GST_VAAPI_DECODER_GET_CLASS(decoder);
GstVideoCodecState *codec_state;
guint sub_size;
parser_state_init(&decoder->parser_state);
codec_state = g_slice_new0(GstVideoCodecState);
codec_state->ref_count = 1;
gst_video_info_init(&codec_state->info);
decoder->user_data = NULL;
decoder->display = gst_vaapi_display_ref(display);
decoder->va_display = GST_VAAPI_DISPLAY_VADISPLAY(display);
decoder->context = NULL;
decoder->va_context = VA_INVALID_ID;
decoder->codec = 0;
decoder->codec_state = codec_state;
decoder->codec_state_changed_func = NULL;
decoder->codec_state_changed_data = NULL;
decoder->buffers = g_async_queue_new_full((GDestroyNotify)gst_buffer_unref);
decoder->frames = g_async_queue_new_full((GDestroyNotify)
gst_video_codec_frame_unref);
if (!set_caps(decoder, caps))
return FALSE;
sub_size = GST_VAAPI_MINI_OBJECT_CLASS(klass)->size - sizeof(*decoder);
if (sub_size > 0)
memset(((guchar *)decoder) + sizeof(*decoder), 0, sub_size);
if (klass->create && !klass->create(decoder))
return FALSE;
return TRUE;
}
GstVaapiDecoder *
gst_vaapi_decoder_new(const GstVaapiDecoderClass *klass,
GstVaapiDisplay *display, GstCaps *caps)
{
GstVaapiDecoder *decoder;
g_return_val_if_fail(display != NULL, NULL);
g_return_val_if_fail(GST_IS_CAPS(caps), NULL);
decoder = (GstVaapiDecoder *)
gst_vaapi_mini_object_new(GST_VAAPI_MINI_OBJECT_CLASS(klass));
if (!decoder)
return NULL;
if (!gst_vaapi_decoder_init(decoder, display, caps))
goto error;
return decoder;
error:
gst_vaapi_decoder_unref(decoder);
return NULL;
}
/**
* gst_vaapi_decoder_ref:
* @decoder: a #GstVaapiDecoder
*
* Atomically increases the reference count of the given @decoder by one.
*
* Returns: The same @decoder argument
*/
GstVaapiDecoder *
gst_vaapi_decoder_ref(GstVaapiDecoder *decoder)
{
return gst_vaapi_object_ref(decoder);
}
/**
* gst_vaapi_decoder_unref:
* @decoder: a #GstVaapiDecoder
*
* Atomically decreases the reference count of the @decoder by one. If
* the reference count reaches zero, the decoder will be free'd.
*/
void
gst_vaapi_decoder_unref(GstVaapiDecoder *decoder)
{
gst_vaapi_object_unref(decoder);
}
/**
* gst_vaapi_decoder_replace:
* @old_decoder_ptr: a pointer to a #GstVaapiDecoder
* @new_decoder: a #GstVaapiDecoder
*
* Atomically replaces the decoder decoder held in @old_decoder_ptr
* with @new_decoder. This means that @old_decoder_ptr shall reference
* a valid decoder. However, @new_decoder can be NULL.
*/
void
gst_vaapi_decoder_replace(GstVaapiDecoder **old_decoder_ptr,
GstVaapiDecoder *new_decoder)
{
gst_vaapi_object_replace(old_decoder_ptr, new_decoder);
}
/**
* gst_vaapi_decoder_get_user_data:
* @decoder: a #GstVaapiDecoder
*
* Retrieves the user-defined data associated with the @decoder, if any.
*
* Return value: the user-defined data associated with the @decoder
*/
gpointer
gst_vaapi_decoder_get_user_data(GstVaapiDecoder *decoder)
{
g_return_val_if_fail(decoder != NULL, NULL);
return decoder->user_data;
}
/**
* gst_vaapi_decoder_set_user_data:
* @decoder: a #GstVaapiDecoder
* @user_data: the pointer to user-defined data
*
* Associates user-defined @user_data to the @decoder. Retrieve the
* attached value with gst_vaapi_decoder_get_user_data() function.
*/
void
gst_vaapi_decoder_set_user_data(GstVaapiDecoder *decoder, gpointer user_data)
{
g_return_if_fail(decoder != NULL);
decoder->user_data = user_data;
}
/**
* gst_vaapi_decoder_get_codec:
* @decoder: a #GstVaapiDecoder
*
* Retrieves the @decoder codec type.
*
* Return value: the #GstVaapiCodec type for @decoder
*/
GstVaapiCodec
gst_vaapi_decoder_get_codec(GstVaapiDecoder *decoder)
{
g_return_val_if_fail(decoder != NULL, (GstVaapiCodec)0);
return decoder->codec;
}
/**
* gst_vaapi_decoder_get_codec_state:
* @decoder: a #GstVaapiDecoder
*
* Retrieves the @decoder codec state. The decoder owns the returned
* #GstVideoCodecState structure, so use gst_video_codec_state_ref()
* whenever necessary.
*
* Return value: the #GstVideoCodecState object for @decoder
*/
GstVideoCodecState *
gst_vaapi_decoder_get_codec_state(GstVaapiDecoder *decoder)
{
g_return_val_if_fail(decoder != NULL, NULL);
return GST_VAAPI_DECODER_CODEC_STATE(decoder);
}
/**
* gst_vaapi_decoder_set_codec_state_changed_func:
* @decoder: a #GstVaapiDecoder
* @func: the function to call when codec state changed
* @user_data: a pointer to user-defined data
*
* Sets @func as the function to call whenever the @decoder codec
* state changes.
*/
void
gst_vaapi_decoder_set_codec_state_changed_func(GstVaapiDecoder *decoder,
GstVaapiDecoderStateChangedFunc func, gpointer user_data)
{
g_return_if_fail(decoder != NULL);
decoder->codec_state_changed_func = func;
decoder->codec_state_changed_data = user_data;
}
/**
* gst_vaapi_decoder_get_caps:
* @decoder: a #GstVaapiDecoder
*
* Retrieves the @decoder caps. The decoder owns the returned caps, so
* use gst_caps_ref() whenever necessary.
*
* Return value: the @decoder caps
*/
GstCaps *
gst_vaapi_decoder_get_caps(GstVaapiDecoder *decoder)
{
return get_caps(decoder);
}
/**
* 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. However,
* if an empty buffer is passed, i.e. a buffer with %NULL data pointer
* or size equals to zero, then the function ignores this buffer and
* returns %TRUE.
*
* Return value: %TRUE on success
*/
gboolean
gst_vaapi_decoder_put_buffer(GstVaapiDecoder *decoder, GstBuffer *buf)
{
g_return_val_if_fail(decoder != NULL, FALSE);
if (buf) {
if (gst_buffer_get_size(buf) == 0)
return TRUE;
buf = gst_buffer_ref(buf);
}
return push_buffer(decoder, buf);
}
/**
* gst_vaapi_decoder_get_surface:
* @decoder: a #GstVaapiDecoder
* @out_proxy_ptr: the next decoded surface as a #GstVaapiSurfaceProxy
*
* Flushes encoded buffers to the decoder and returns a decoded
* surface, if any.
*
* On successful return, *@out_proxy_ptr contains the decoded surface
* as a #GstVaapiSurfaceProxy. The caller owns this object, so
* gst_vaapi_surface_proxy_unref() shall be called after usage.
*
* Return value: a #GstVaapiDecoderStatus
*/
GstVaapiDecoderStatus
gst_vaapi_decoder_get_surface(GstVaapiDecoder *decoder,
GstVaapiSurfaceProxy **out_proxy_ptr)
{
GstVideoCodecFrame *frame;
GstVaapiDecoderStatus status;
g_return_val_if_fail(decoder != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(out_proxy_ptr != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
do {
frame = pop_frame(decoder, 0);
while (frame) {
if (!GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY(frame)) {
GstVaapiSurfaceProxy * const proxy = frame->user_data;
proxy->timestamp = frame->pts;
proxy->duration = frame->duration;
*out_proxy_ptr = gst_vaapi_surface_proxy_ref(proxy);
gst_video_codec_frame_unref(frame);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
gst_video_codec_frame_unref(frame);
frame = pop_frame(decoder, 0);
}
status = decode_step(decoder);
} while (status == GST_VAAPI_DECODER_STATUS_SUCCESS);
*out_proxy_ptr = NULL;
return status;
}
/**
* gst_vaapi_decoder_get_frame:
* @decoder: a #GstVaapiDecoder
* @out_frame_ptr: the next decoded frame as a #GstVideoCodecFrame
*
* On successful return, *@out_frame_ptr contains the next decoded
* frame available as a #GstVideoCodecFrame. The caller owns this
* object, so gst_video_codec_frame_unref() shall be called after
* usage. Otherwise, @GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA is
* returned if no decoded frame is available.
*
* The actual surface is available as a #GstVaapiSurfaceProxy attached
* to the user-data anchor of the output frame. Ownership of the proxy
* is transferred to the frame.
*
* This is equivalent to gst_vaapi_decoder_get_frame_with_timeout()
* with a timeout value of zero.
*
* Return value: a #GstVaapiDecoderStatus
*/
GstVaapiDecoderStatus
gst_vaapi_decoder_get_frame(GstVaapiDecoder *decoder,
GstVideoCodecFrame **out_frame_ptr)
{
return gst_vaapi_decoder_get_frame_with_timeout(decoder, out_frame_ptr, 0);
}
/**
* gst_vaapi_decoder_get_frame_with_timeout:
* @decoder: a #GstVaapiDecoder
* @out_frame_ptr: the next decoded frame as a #GstVideoCodecFrame
* @timeout: the number of microseconds to wait for the frame, at most
*
* On successful return, *@out_frame_ptr contains the next decoded
* frame available as a #GstVideoCodecFrame. The caller owns this
* object, so gst_video_codec_frame_unref() shall be called after
* usage. Otherwise, @GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA is
* returned if no decoded frame is available.
*
* The actual surface is available as a #GstVaapiSurfaceProxy attached
* to the user-data anchor of the output frame. Ownership of the proxy
* is transferred to the frame.
*
* Return value: a #GstVaapiDecoderStatus
*/
GstVaapiDecoderStatus
gst_vaapi_decoder_get_frame_with_timeout(GstVaapiDecoder *decoder,
GstVideoCodecFrame **out_frame_ptr, guint64 timeout)
{
GstVideoCodecFrame *out_frame;
g_return_val_if_fail(decoder != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(out_frame_ptr != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
out_frame = pop_frame(decoder, timeout);
if (!out_frame)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
#if !GST_CHECK_VERSION(1,0,0)
if (!GST_VIDEO_CODEC_FRAME_IS_DECODE_ONLY(out_frame)) {
const guint flags = GST_VAAPI_SURFACE_PROXY_FLAGS(out_frame->user_data);
guint out_flags = 0;
if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_TFF)
out_flags |= GST_VIDEO_CODEC_FRAME_FLAG_TFF;
if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_RFF)
out_flags |= GST_VIDEO_CODEC_FRAME_FLAG_RFF;
if (flags & GST_VAAPI_SURFACE_PROXY_FLAG_ONEFIELD)
out_flags |= GST_VIDEO_CODEC_FRAME_FLAG_ONEFIELD;
GST_VIDEO_CODEC_FRAME_FLAG_SET(out_frame, out_flags);
}
#endif
*out_frame_ptr = out_frame;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
void
gst_vaapi_decoder_set_picture_size(
GstVaapiDecoder *decoder,
guint width,
guint height
)
{
GstVideoCodecState * const codec_state = decoder->codec_state;
gboolean size_changed = FALSE;
if (codec_state->info.width != width) {
GST_DEBUG("picture width changed to %d", width);
codec_state->info.width = width;
gst_caps_set_simple(codec_state->caps,
"width", G_TYPE_INT, width, NULL);
size_changed = TRUE;
}
if (codec_state->info.height != height) {
GST_DEBUG("picture height changed to %d", height);
codec_state->info.height = height;
gst_caps_set_simple(codec_state->caps,
"height", G_TYPE_INT, height, NULL);
size_changed = TRUE;
}
if (size_changed)
notify_codec_state_changed(decoder);
}
void
gst_vaapi_decoder_set_framerate(
GstVaapiDecoder *decoder,
guint fps_n,
guint fps_d
)
{
GstVideoCodecState * const codec_state = decoder->codec_state;
if (!fps_n || !fps_d)
return;
if (codec_state->info.fps_n != fps_n || codec_state->info.fps_d != fps_d) {
GST_DEBUG("framerate changed to %u/%u", fps_n, fps_d);
codec_state->info.fps_n = fps_n;
codec_state->info.fps_d = fps_d;
gst_caps_set_simple(codec_state->caps,
"framerate", GST_TYPE_FRACTION, fps_n, fps_d, NULL);
notify_codec_state_changed(decoder);
}
}
void
gst_vaapi_decoder_set_pixel_aspect_ratio(
GstVaapiDecoder *decoder,
guint par_n,
guint par_d
)
{
GstVideoCodecState * const codec_state = decoder->codec_state;
if (!par_n || !par_d)
return;
if (codec_state->info.par_n != par_n || codec_state->info.par_d != par_d) {
GST_DEBUG("pixel-aspect-ratio changed to %u/%u", par_n, par_d);
codec_state->info.par_n = par_n;
codec_state->info.par_d = par_d;
gst_caps_set_simple(codec_state->caps,
"pixel-aspect-ratio", GST_TYPE_FRACTION, par_n, par_d, NULL);
notify_codec_state_changed(decoder);
}
}
static const gchar *
gst_interlace_mode_to_string(GstVideoInterlaceMode mode)
{
switch (mode) {
case GST_VIDEO_INTERLACE_MODE_PROGRESSIVE: return "progressive";
case GST_VIDEO_INTERLACE_MODE_INTERLEAVED: return "interleaved";
case GST_VIDEO_INTERLACE_MODE_MIXED: return "mixed";
}
return "<unknown>";
}
void
gst_vaapi_decoder_set_interlace_mode(GstVaapiDecoder *decoder,
GstVideoInterlaceMode mode)
{
GstVideoCodecState * const codec_state = decoder->codec_state;
if (codec_state->info.interlace_mode != mode) {
GST_DEBUG("interlace mode changed to %s",
gst_interlace_mode_to_string(mode));
codec_state->info.interlace_mode = mode;
gst_caps_set_simple(codec_state->caps, "interlaced",
G_TYPE_BOOLEAN, mode != GST_VIDEO_INTERLACE_MODE_PROGRESSIVE, NULL);
notify_codec_state_changed(decoder);
}
}
void
gst_vaapi_decoder_set_interlaced(GstVaapiDecoder *decoder, gboolean interlaced)
{
gst_vaapi_decoder_set_interlace_mode(decoder,
(interlaced ?
GST_VIDEO_INTERLACE_MODE_INTERLEAVED :
GST_VIDEO_INTERLACE_MODE_PROGRESSIVE));
}
gboolean
gst_vaapi_decoder_ensure_context(
GstVaapiDecoder *decoder,
GstVaapiContextInfo *cip
)
{
gst_vaapi_decoder_set_picture_size(decoder, cip->width, cip->height);
cip->usage = GST_VAAPI_CONTEXT_USAGE_DECODE;
if (decoder->context) {
if (!gst_vaapi_context_reset(decoder->context, cip))
return FALSE;
}
else {
decoder->context = gst_vaapi_context_new(decoder->display, cip);
if (!decoder->context)
return FALSE;
}
decoder->va_context = gst_vaapi_context_get_id(decoder->context);
return TRUE;
}
void
gst_vaapi_decoder_push_frame(GstVaapiDecoder *decoder,
GstVideoCodecFrame *frame)
{
push_frame(decoder, frame);
}
GstVaapiDecoderStatus
gst_vaapi_decoder_check_status(GstVaapiDecoder *decoder)
{
if (decoder->context &&
gst_vaapi_context_get_surface_count(decoder->context) < 1)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_SURFACE;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
GstVaapiDecoderStatus
gst_vaapi_decoder_parse(GstVaapiDecoder *decoder,
GstVideoCodecFrame *base_frame, GstAdapter *adapter, gboolean at_eos,
guint *got_unit_size_ptr, gboolean *got_frame_ptr)
{
g_return_val_if_fail(decoder != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(base_frame != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(adapter != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(got_unit_size_ptr != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(got_frame_ptr != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
return do_parse(decoder, base_frame, adapter, at_eos,
got_unit_size_ptr, got_frame_ptr);
}
GstVaapiDecoderStatus
gst_vaapi_decoder_decode(GstVaapiDecoder *decoder, GstVideoCodecFrame *frame)
{
GstVaapiDecoderStatus status;
g_return_val_if_fail(decoder != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(frame != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
g_return_val_if_fail(frame->user_data != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
status = gst_vaapi_decoder_check_status(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
return do_decode(decoder, frame);
}
GstVaapiDecoderStatus
gst_vaapi_decoder_flush(GstVaapiDecoder *decoder)
{
g_return_val_if_fail(decoder != NULL,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_PARAMETER);
return do_flush(decoder);
}
GstVaapiDecoderStatus
gst_vaapi_decoder_decode_codec_data(GstVaapiDecoder *decoder)
{
GstVaapiDecoderClass * const klass = GST_VAAPI_DECODER_GET_CLASS(decoder);
GstBuffer * const codec_data = GST_VAAPI_DECODER_CODEC_DATA(decoder);
GstVaapiDecoderStatus status;
GstMapInfo map_info;
const guchar *buf;
guint buf_size;
if (!codec_data)
return GST_VAAPI_DECODER_STATUS_SUCCESS;
/* FIXME: add a meaningful error code? */
if (!klass->decode_codec_data)
return GST_VAAPI_DECODER_STATUS_SUCCESS;
if (!gst_buffer_map(codec_data, &map_info, GST_MAP_READ)) {
GST_ERROR("failed to map buffer");
return GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN;
}
buf = map_info.data;
buf_size = map_info.size;
if (G_LIKELY(buf && buf_size > 0))
status = klass->decode_codec_data(decoder, buf, buf_size);
else
status = GST_VAAPI_DECODER_STATUS_SUCCESS;
gst_buffer_unmap(codec_data, &map_info);
return status;
}
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