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libavcodec/qsvdec_h264.c: packet buffering has been removed since qsvdec.c does maintain own data buffering now.

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Ivan Uskov 2015-07-21 08:32:09 -04:00 committed by Michael Niedermayer
parent c90dbc67ed
commit 0b159e3b65
1 changed files with 24 additions and 79 deletions
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103
libavcodec/qsvdec_h264.c
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@ -42,37 +42,14 @@ typedef struct QSVH264Context {
// the filter for converting to Annex B
AVBitStreamFilterContext *bsf;
AVFifoBuffer *packet_fifo;
AVPacket input_ref;
AVPacket pkt_filtered;
uint8_t *filtered_data;
} QSVH264Context;
static void qsv_clear_buffers(QSVH264Context *s)
{
AVPacket pkt;
while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
av_packet_unref(&pkt);
}
if (s->filtered_data != s->input_ref.data)
av_freep(&s->filtered_data);
s->filtered_data = NULL;
av_packet_unref(&s->input_ref);
}
static av_cold int qsv_decode_close(AVCodecContext *avctx)
{
QSVH264Context *s = avctx->priv_data;
ff_qsv_decode_close(&s->qsv);
qsv_clear_buffers(s);
av_fifo_free(s->packet_fifo);
av_bitstream_filter_close(s->bsf);
return 0;
@ -83,12 +60,6 @@ static av_cold int qsv_decode_init(AVCodecContext *avctx)
QSVH264Context *s = avctx->priv_data;
int ret;
s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
if (!s->packet_fifo) {
ret = AVERROR(ENOMEM);
goto fail;
}
s->bsf = av_bitstream_filter_init("h264_mp4toannexb");
if (!s->bsf) {
ret = AVERROR(ENOMEM);
@ -107,68 +78,42 @@ static int qsv_decode_frame(AVCodecContext *avctx, void *data,
QSVH264Context *s = avctx->priv_data;
AVFrame *frame = data;
int ret;
uint8_t *p_filtered = NULL;
int n_filtered = NULL;
AVPacket pkt_filtered = { 0 };
/* buffer the input packet */
if (avpkt->size) {
AVPacket input_ref = { 0 };
if (avpkt->size > 3 && !avpkt->data[0] &&
!avpkt->data[1] && !avpkt->data[2] && 1==avpkt->data[3]) {
/* we already have annex-b prefix */
return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
ret = av_fifo_realloc2(s->packet_fifo,
av_fifo_size(s->packet_fifo) + sizeof(input_ref));
if (ret < 0)
return ret;
}
ret = av_packet_ref(&input_ref, avpkt);
if (ret < 0)
return ret;
av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
}
/* process buffered data */
while (!*got_frame) {
/* prepare the input data -- convert to Annex B if needed */
if (s->pkt_filtered.size <= 0) {
int size;
/* no more data */
if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
return avpkt->size ? avpkt->size : ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
if (s->filtered_data != s->input_ref.data)
av_freep(&s->filtered_data);
s->filtered_data = NULL;
av_packet_unref(&s->input_ref);
av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL);
} else {
/* no annex-b prefix. try to restore: */
ret = av_bitstream_filter_filter(s->bsf, avctx, NULL,
&s->filtered_data, &size,
s->input_ref.data, s->input_ref.size, 0);
if (ret < 0) {
s->filtered_data = s->input_ref.data;
size = s->input_ref.size;
&p_filtered, &n_filtered,
avpkt->data, avpkt->size, 0);
if (ret>=0) {
pkt_filtered.pts = avpkt->pts;
pkt_filtered.data = p_filtered;
pkt_filtered.size = n_filtered;
ret = ff_qsv_decode(avctx, &s->qsv, frame, got_frame, &pkt_filtered);
if (p_filtered != avpkt->data)
av_free(p_filtered);
return ret > 0 ? avpkt->size : ret;
}
s->pkt_filtered = s->input_ref;
s->pkt_filtered.data = s->filtered_data;
s->pkt_filtered.size = size;
}
ret = ff_qsv_decode(avctx, &s->qsv, frame, got_frame, &s->pkt_filtered);
if (ret < 0)
return ret;
s->pkt_filtered.size -= ret;
s->pkt_filtered.data += ret;
}
return avpkt->size;
return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt);
}
static void qsv_decode_flush(AVCodecContext *avctx)
{
QSVH264Context *s = avctx->priv_data;
qsv_clear_buffers(s);
// QSVH264Context *s = avctx->priv_data;
/* TODO: flush qsv engine if necessary */
}
AVHWAccel ff_h264_qsv_hwaccel = {