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mpeg2: initial port to new GstVaapiDecoder API.

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This commit is contained in:
Gwenole Beauchesne 2012-12-06 14:01:46 +01:00
parent e7e5c74a6e
commit 50090d6138
1 changed files with 115 additions and 75 deletions
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190
gst-libs/gst/vaapi/gstvaapidecoder_mpeg2.c
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@ -178,7 +178,6 @@ struct _GstVaapiDecoderMpeg2Private {
GstMpegVideoQuantMatrixExt quant_matrix_ext;
GstVaapiPicture *current_picture;
GstVaapiDpb *dpb;
GstAdapter *adapter;
PTSGenerator tsg;
guint is_constructed : 1;
guint is_opened : 1;
@ -284,25 +283,15 @@ gst_vaapi_decoder_mpeg2_close(GstVaapiDecoderMpeg2 *decoder)
gst_vaapi_dpb_unref(priv->dpb);
priv->dpb = NULL;
}
if (priv->adapter) {
gst_adapter_clear(priv->adapter);
g_object_unref(priv->adapter);
priv->adapter = NULL;
}
}
static gboolean
gst_vaapi_decoder_mpeg2_open(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
gst_vaapi_decoder_mpeg2_open(GstVaapiDecoderMpeg2 *decoder)
{
GstVaapiDecoderMpeg2Private * const priv = decoder->priv;
gst_vaapi_decoder_mpeg2_close(decoder);
priv->adapter = gst_adapter_new();
if (!priv->adapter)
return FALSE;
priv->dpb = gst_vaapi_dpb_mpeg2_new();
if (!priv->dpb)
return FALSE;
@ -629,7 +618,6 @@ decode_gop(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
{
GstVaapiDecoderMpeg2Private * const priv = decoder->priv;
GstMpegVideoGop gop;
GstClockTime pts;
if (!gst_mpeg_video_parse_gop(&gop, buf, buf_size, 4)) {
GST_ERROR("failed to parse GOP");
@ -643,8 +631,7 @@ decode_gop(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
gop.hour, gop.minute, gop.second, gop.frame,
priv->closed_gop, priv->broken_link);
pts = gst_adapter_prev_timestamp(priv->adapter, NULL);
pts_sync(&priv->tsg, pts);
pts_sync(&priv->tsg, GST_VAAPI_DECODER_CODEC_FRAME(decoder)->pts);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
@ -655,7 +642,6 @@ decode_picture(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
GstMpegVideoPictureHdr * const pic_hdr = &priv->pic_hdr;
GstVaapiPicture *picture;
GstVaapiDecoderStatus status;
GstClockTime pts;
status = ensure_context(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS) {
@ -715,8 +701,8 @@ decode_picture(GstVaapiDecoderMpeg2 *decoder, guchar *buf, guint buf_size)
}
/* Update presentation time */
pts = gst_adapter_prev_timestamp(priv->adapter, NULL);
picture->pts = pts_eval(&priv->tsg, pts, pic_hdr->tsn);
picture->pts = pts_eval(&priv->tsg,
GST_VAAPI_DECODER_CODEC_FRAME(decoder)->pts, pic_hdr->tsn);
picture->poc = pts_get_poc(&priv->tsg);
return status;
}
@ -1044,81 +1030,135 @@ undefined_picture:
static GstVaapiDecoderStatus
decode_buffer(GstVaapiDecoderMpeg2 *decoder, GstBuffer *buffer)
{
GstVaapiDecoderMpeg2Private * const priv = decoder->priv;
GstVaapiDecoderStatus status;
gboolean is_eos;
guchar *buf;
guint buf_size, size;
guint32 start_code;
gint ofs;
guint buf_size;
buf = GST_BUFFER_DATA(buffer);
buf_size = GST_BUFFER_SIZE(buffer);
is_eos = GST_BUFFER_IS_EOS(buffer);
if (buf && buf_size > 0)
gst_adapter_push(priv->adapter, gst_buffer_ref(buffer));
size = gst_adapter_available(priv->adapter);
do {
if (size == 0) {
status = GST_VAAPI_DECODER_STATUS_SUCCESS;
break;
}
status = GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
if (size < 4)
break;
ofs = scan_for_start_code(priv->adapter, 0, size, &start_code);
if (ofs < 0)
break;
gst_adapter_flush(priv->adapter, ofs);
size -= ofs;
status = gst_vaapi_decoder_check_status(GST_VAAPI_DECODER(decoder));
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
break;
status = GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
if (size < 8)
break;
ofs = scan_for_start_code(priv->adapter, 4, size - 4, NULL);
if (ofs < 0) {
// Assume the whole packet is present if end-of-stream
if (!is_eos)
break;
ofs = size;
}
buffer = gst_adapter_take_buffer(priv->adapter, ofs);
size -= ofs;
buf = GST_BUFFER_DATA(buffer);
buf_size = GST_BUFFER_SIZE(buffer);
status = decode_packet(decoder, buf, buf_size);
gst_buffer_unref(buffer);
} while (status == GST_VAAPI_DECODER_STATUS_SUCCESS);
if (is_eos && (status == GST_VAAPI_DECODER_STATUS_SUCCESS ||
status == GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA))
status = decode_sequence_end(decoder);
status = decode_packet(decoder, buf, buf_size);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
return status;
}
GstVaapiDecoderStatus
gst_vaapi_decoder_mpeg2_decode(GstVaapiDecoder *base, GstBuffer *buffer)
static GstVaapiDecoderStatus
ensure_decoder(GstVaapiDecoderMpeg2 *decoder)
{
GstVaapiDecoderMpeg2 * const decoder = GST_VAAPI_DECODER_MPEG2(base);
GstVaapiDecoderMpeg2Private * const priv = decoder->priv;
g_return_val_if_fail(priv->is_constructed,
GST_VAAPI_DECODER_STATUS_ERROR_INIT_FAILED);
if (!priv->is_opened) {
priv->is_opened = gst_vaapi_decoder_mpeg2_open(decoder, buffer);
priv->is_opened = gst_vaapi_decoder_mpeg2_open(decoder);
if (!priv->is_opened)
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC;
}
return decode_buffer(decoder, buffer);
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_mpeg2_parse(GstVaapiDecoder *base_decoder,
GstAdapter *adapter, gboolean at_eos, GstVaapiDecoderUnit **unit_ptr)
{
GstVaapiDecoderMpeg2 * const decoder =
GST_VAAPI_DECODER_MPEG2(base_decoder);
GstVaapiDecoderUnit *unit = NULL;
GstVaapiDecoderStatus status;
guint32 start_code;
guint8 pkt_type, ext_type;
guint size, buf_size, flags = 0;
gint ofs;
status = ensure_decoder(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
size = gst_adapter_available(adapter);
if (size < 4)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
ofs = scan_for_start_code(adapter, 0, size, &start_code);
if (ofs < 0)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
gst_adapter_flush(adapter, ofs);
size -= ofs;
ofs = G_UNLIKELY(size < 8) ? -1 :
scan_for_start_code(adapter, 4, size - 4, NULL);
if (ofs < 0) {
// Assume the whole packet is present if end-of-stream
if (!at_eos)
return GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA;
ofs = size;
}
buf_size = ofs;
unit = gst_vaapi_decoder_unit_new(buf_size);
if (!unit)
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
/* Check for start of new picture */
pkt_type = start_code & 0xff;
switch (pkt_type) {
case GST_MPEG_VIDEO_PACKET_SEQUENCE_END:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_END;
flags |= GST_VAAPI_DECODER_UNIT_FLAG_STREAM_END;
break;
case GST_MPEG_VIDEO_PACKET_USER_DATA:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_SKIP;
/* fall-through */
case GST_MPEG_VIDEO_PACKET_SEQUENCE:
case GST_MPEG_VIDEO_PACKET_GOP:
case GST_MPEG_VIDEO_PACKET_PICTURE:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START;
break;
case GST_MPEG_VIDEO_PACKET_EXTENSION:
if (buf_size < 5)
break;
gst_adapter_copy(adapter, &ext_type, 4, 1);
switch (ext_type) {
case GST_MPEG_VIDEO_PACKET_EXT_SEQUENCE:
flags |= GST_VAAPI_DECODER_UNIT_FLAG_FRAME_START;
break;
}
break;
default:
if (pkt_type >= GST_MPEG_VIDEO_PACKET_SLICE_MIN &&
pkt_type <= GST_MPEG_VIDEO_PACKET_SLICE_MAX)
flags |= GST_VAAPI_DECODER_UNIT_FLAG_SLICE;
break;
}
GST_VAAPI_DECODER_UNIT_FLAG_SET(unit, flags);
*unit_ptr = unit;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static GstVaapiDecoderStatus
gst_vaapi_decoder_mpeg2_decode(GstVaapiDecoder *base_decoder,
GstVaapiDecoderUnit *unit)
{
GstVaapiDecoderMpeg2 * const decoder =
GST_VAAPI_DECODER_MPEG2(base_decoder);
GstVaapiDecoderStatus status;
status = ensure_decoder(decoder);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
unit->buffer = gst_buffer_create_sub(
GST_VAAPI_DECODER_CODEC_FRAME(decoder)->input_buffer,
unit->offset, unit->size);
if (!unit->buffer)
return GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED;
status = decode_buffer(decoder, unit->buffer);
if (status != GST_VAAPI_DECODER_STATUS_SUCCESS)
return status;
return GST_VAAPI_DECODER_STATUS_SUCCESS;
}
static void
@ -1156,6 +1196,7 @@ gst_vaapi_decoder_mpeg2_class_init(GstVaapiDecoderMpeg2Class *klass)
object_class->finalize = gst_vaapi_decoder_mpeg2_finalize;
object_class->constructed = gst_vaapi_decoder_mpeg2_constructed;
decoder_class->parse = gst_vaapi_decoder_mpeg2_parse;
decoder_class->decode = gst_vaapi_decoder_mpeg2_decode;
}
@ -1173,7 +1214,6 @@ gst_vaapi_decoder_mpeg2_init(GstVaapiDecoderMpeg2 *decoder)
priv->hw_profile = GST_VAAPI_PROFILE_UNKNOWN;
priv->profile = GST_VAAPI_PROFILE_MPEG2_SIMPLE;
priv->current_picture = NULL;
priv->adapter = NULL;
priv->is_constructed = FALSE;
priv->is_opened = FALSE;
priv->has_seq_ext = FALSE;