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Code Issues Releases Activity

qtrleenc: Keep coded_frame.key_frame a write-only variable

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This commit is contained in:
Vittorio Giovara 2015-07-15 18:41:16 +01:00
parent f3b4a92241
commit efc618aff9
1 changed files with 14 additions and 8 deletions
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22
libavcodec/qtrleenc.c
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@ -57,6 +57,9 @@ typedef struct QtrleEncContext {
* Will contain at ith position the number of consecutive pixels equal to the previous
* frame starting from pixel i */
uint8_t* skip_table;
/** Encoded frame is a key frame */
int key_frame;
} QtrleEncContext;
static av_cold int qtrle_encode_end(AVCodecContext *avctx)
@ -159,7 +162,7 @@ static void qtrle_encode_line(QtrleEncContext *s, const AVFrame *p, int line, ui
for (i = width - 1; i >= 0; i--) {
if (!s->avctx->coded_frame->key_frame && !memcmp(this_line, prev_line, s->pixel_size))
if (!s->key_frame && !memcmp(this_line, prev_line, s->pixel_size))
skipcount = FFMIN(skipcount + 1, MAX_RLE_SKIP);
else
skipcount = 0;
@ -263,7 +266,7 @@ static int encode_frame(QtrleEncContext *s, const AVFrame *p, uint8_t *buf)
int end_line = s->avctx->height;
uint8_t *orig_buf = buf;
if (!s->avctx->coded_frame->key_frame) {
if (!s->key_frame) {
unsigned line_size = s->avctx->width * s->pixel_size;
for (start_line = 0; start_line < s->avctx->height; start_line++)
if (memcmp(p->data[0] + start_line*p->linesize[0],
@ -301,7 +304,7 @@ static int qtrle_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
{
QtrleEncContext * const s = avctx->priv_data;
AVFrame * const p = avctx->coded_frame;
enum AVPictureType pict_type;
int ret;
if ((ret = ff_alloc_packet(pkt, s->max_buf_size)) < 0) {
@ -312,12 +315,12 @@ static int qtrle_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
if (avctx->gop_size == 0 || (s->avctx->frame_number % avctx->gop_size) == 0) {
/* I-Frame */
p->pict_type = AV_PICTURE_TYPE_I;
p->key_frame = 1;
pict_type = AV_PICTURE_TYPE_I;
s->key_frame = 1;
} else {
/* P-Frame */
p->pict_type = AV_PICTURE_TYPE_P;
p->key_frame = 0;
pict_type = AV_PICTURE_TYPE_P;
s->key_frame = 0;
}
pkt->size = encode_frame(s, pict, pkt->data);
@ -326,7 +329,10 @@ static int qtrle_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
av_picture_copy(&s->previous_frame, (const AVPicture *)pict,
avctx->pix_fmt, avctx->width, avctx->height);
if (p->key_frame)
avctx->coded_frame->key_frame = s->key_frame;
avctx->coded_frame->pict_type = pict_type;
if (s->key_frame)
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;