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Split decoder creation with actual resources allocation

Browse source 
and codec setup (probe). This fixes a memory leak (avctx, pctx)
on destroy and most interestingly makes it possible to
detect unsupported codecs.
This commit is contained in:
gb 2010-04-28 22:16:10 +00:00 committed by Gwenole Beauchesne
parent ff193a22b9
commit 61ae27d84c
2 changed files with 52 additions and 26 deletions
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2
gst-libs/gst/vaapi/gstvaapidecoder.h
View file

@ -63,6 +63,7 @@ typedef struct _GstVaapiDecoderClass GstVaapiDecoderClass;
* @GST_VAAPI_DECODER_STATUS_END_OF_STREAM: End-Of-Stream.
* @GST_VAAPI_DECODER_STATUS_ERROR_ALLOCATION_FAILED: No memory left.
* @GST_VAAPI_DECODER_STATUS_ERROR_INIT_FAILED: Decoder initialization failure.
* @GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC: Unsupported codec.
* @GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA: Not enough input data to decode.
* @GST_VAAPI_DECODER_STATUS_ERROR_INVALID_SURFACE: Invalid surface.
* @GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN: Unknown error.
@ -75,6 +76,7 @@ enum _GstVaapiDecoderStatus {
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_UNSUPPORTED_CODEC,
GST_VAAPI_DECODER_STATUS_ERROR_NO_DATA,
GST_VAAPI_DECODER_STATUS_ERROR_INVALID_SURFACE,
GST_VAAPI_DECODER_STATUS_ERROR_UNKNOWN

76
gst-libs/gst/vaapi/gstvaapidecoder_ffmpeg.c
View file

@ -56,6 +56,7 @@ struct _GstVaapiDecoderFfmpegPrivate {
AVCodecContext *avctx;
GstVaapiContextFfmpeg *vactx;
guint is_constructed : 1;
guint is_open : 1;
};
/** Converts codec to FFmpeg codec id */
@ -224,38 +225,30 @@ gst_vaapi_decoder_ffmpeg_release_buffer(AVCodecContext *avctx, AVFrame *pic)
}
static void
gst_vaapi_decoder_ffmpeg_destroy(GstVaapiDecoderFfmpeg *ffdecoder)
gst_vaapi_decoder_ffmpeg_close(GstVaapiDecoderFfmpeg *ffdecoder)
{
GstVaapiDecoderFfmpegPrivate * const priv = ffdecoder->priv;
if (priv->vactx) {
g_free(priv->vactx);
priv->vactx = NULL;
}
if (priv->avctx) {
av_freep(&priv->avctx->extradata);
avcodec_close(priv->avctx);
priv->avctx = NULL;
}
if (priv->pctx) {
if (priv->pctx)
av_parser_close(priv->pctx);
priv->pctx = NULL;
}
av_freep(&priv->frame);
}
static gboolean
gst_vaapi_decoder_ffmpeg_create(GstVaapiDecoderFfmpeg *ffdecoder)
gst_vaapi_decoder_ffmpeg_open(GstVaapiDecoderFfmpeg *ffdecoder, GstBuffer *buffer)
{
GstVaapiDecoder * const decoder = GST_VAAPI_DECODER(ffdecoder);
GstVaapiDecoderFfmpegPrivate * const priv = ffdecoder->priv;
GstVaapiCodec codec = GST_VAAPI_DECODER_CODEC(decoder);
GstBuffer * const codec_data = GST_VAAPI_DECODER_CODEC_DATA(decoder);
GstVaapiDisplay * const display = GST_VAAPI_DECODER_DISPLAY(ffdecoder);
GstVaapiCodec codec = GST_VAAPI_DECODER_CODEC(ffdecoder);
enum CodecID codec_id;
AVCodec *ffcodec;
int ret;
gst_vaapi_decoder_ffmpeg_close(ffdecoder);
codec_id = get_codec_id_from_codec(codec);
if (codec_id == CODEC_ID_NONE)
@ -265,6 +258,40 @@ gst_vaapi_decoder_ffmpeg_create(GstVaapiDecoderFfmpeg *ffdecoder)
if (!ffcodec)
return FALSE;
priv->pctx = av_parser_init(codec_id);
if (!priv->pctx)
return FALSE;
GST_VAAPI_DISPLAY_LOCK(display);
ret = avcodec_open(priv->avctx, ffcodec);
GST_VAAPI_DISPLAY_UNLOCK(display);
return ret == 0;
}
static void
gst_vaapi_decoder_ffmpeg_destroy(GstVaapiDecoderFfmpeg *ffdecoder)
{
GstVaapiDecoderFfmpegPrivate * const priv = ffdecoder->priv;
gst_vaapi_decoder_ffmpeg_close(ffdecoder);
if (priv->vactx) {
g_free(priv->vactx);
priv->vactx = NULL;
}
av_freep(&priv->avctx);
av_freep(&priv->pctx);
av_freep(&priv->frame);
}
static gboolean
gst_vaapi_decoder_ffmpeg_create(GstVaapiDecoderFfmpeg *ffdecoder)
{
GstVaapiDecoder * const decoder = GST_VAAPI_DECODER(ffdecoder);
GstVaapiDecoderFfmpegPrivate * const priv = ffdecoder->priv;
GstBuffer * const codec_data = GST_VAAPI_DECODER_CODEC_DATA(decoder);
if (!priv->frame) {
priv->frame = avcodec_alloc_frame();
if (!priv->frame)
@ -305,16 +332,6 @@ gst_vaapi_decoder_ffmpeg_create(GstVaapiDecoderFfmpeg *ffdecoder)
priv->avctx->thread_count = 1;
priv->avctx->draw_horiz_band = NULL;
priv->avctx->slice_flags = SLICE_FLAG_CODED_ORDER|SLICE_FLAG_ALLOW_FIELD;
if (priv->pctx)
av_parser_close(priv->pctx);
priv->pctx = av_parser_init(codec_id);
if (!priv->pctx)
return FALSE;
/* XXX: lock display? */
if (avcodec_open(priv->avctx, ffcodec) < 0)
return FALSE;
return TRUE;
}
@ -363,6 +380,12 @@ gst_vaapi_decoder_ffmpeg_decode(GstVaapiDecoder *decoder, GstBuffer *buffer)
g_return_val_if_fail(priv->is_constructed,
GST_VAAPI_DECODER_STATUS_ERROR_INIT_FAILED);
if (!priv->is_open) {
priv->is_open = gst_vaapi_decoder_ffmpeg_open(ffdecoder, buffer);
if (!priv->is_open)
return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CODEC;
}
inbuf = GST_BUFFER_DATA(buffer);
inbuf_size = GST_BUFFER_SIZE(buffer);
inbuf_ts = GST_BUFFER_TIMESTAMP(buffer);
@ -456,6 +479,7 @@ gst_vaapi_decoder_ffmpeg_init(GstVaapiDecoderFfmpeg *decoder)
priv->avctx = NULL;
priv->vactx = NULL;
priv->is_constructed = FALSE;
priv->is_open = FALSE;
}
/**