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| author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2021-04-14 21:24:33 +0200 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2021-04-18 04:32:15 +0200 |
| commit | 9b3c46a081a9f01559082bf7a154fc6be1e06c18 (patch) | |
| tree | cea171937cd35edddd0d163604a1d6b040db4ff7 | |
| parent | 5627da3555ecbf6fbfd98d045abbc7b63bc98fce (diff) | |
| download | ffmpeg-9b3c46a081a9f01559082bf7a154fc6be1e06c18.tar.gz | |
avcodec/jpeglsdec: Don't allocate+free JPEGLSState for every frame
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
| -rw-r--r-- | libavcodec/jpeglsdec.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c index 69980eaa49..92df81600b 100644 --- a/libavcodec/jpeglsdec.c +++ b/libavcodec/jpeglsdec.c @@ -45,6 +45,11 @@ */ //#define JLS_BROKEN +typedef struct JpegLSDecodeContext { + MJpegDecodeContext mjpeg; + JLSState state; +} JpegLSDecodeContext; + /** * Decode LSE block with initialization parameters */ @@ -350,7 +355,7 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, { int i, t = 0; uint8_t *zero, *last, *cur; - JLSState *state; + JLSState *const state = &((JpegLSDecodeContext*)s)->state; int off = 0, stride = 1, width, shift, ret = 0; int decoded_height = 0; @@ -360,12 +365,8 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, last = zero; cur = s->picture_ptr->data[0]; - state = av_mallocz(sizeof(JLSState)); - if (!state) { - av_free(zero); - return AVERROR(ENOMEM); - } /* initialize JPEG-LS state from JPEG parameters */ + memset(state, 0, sizeof(*state)); state->near = near; state->bpp = (s->bits < 2) ? 2 : s->bits; state->maxval = s->maxval; @@ -537,7 +538,6 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, } end: - av_free(state); av_free(zero); return ret; @@ -548,7 +548,7 @@ AVCodec ff_jpegls_decoder = { .long_name = NULL_IF_CONFIG_SMALL("JPEG-LS"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_JPEGLS, - .priv_data_size = sizeof(MJpegDecodeContext), + .priv_data_size = sizeof(JpegLSDecodeContext), .init = ff_mjpeg_decode_init, .close = ff_mjpeg_decode_end, .receive_frame = ff_mjpeg_receive_frame, |