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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: This avoids keeping pointers to no longer valid data in the context. Signed-off-by: Andreas Rheinhardt --- libavcodec/hcadec.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/libavcodec/hcadec.c b/libavcodec/hcadec.c index 73ff62139d..7054575872 100644 --- a/libavcodec/hcadec.c +++ b/libavcodec/hcadec.c @@ -43,8 +43,6 @@ typedef struct ChannelContext { } ChannelContext; typedef struct HCAContext { - GetBitContext gb; - const AVCRC *crc_table; ChannelContext ch[16]; @@ -299,10 +297,9 @@ static void reconstruct_hfr(HCAContext *s, ChannelContext *ch, ch->imdct_in[127] = 0; } -static void dequantize_coefficients(HCAContext *c, ChannelContext *ch) +static void dequantize_coefficients(HCAContext *c, ChannelContext *ch, + GetBitContext *gb) { - GetBitContext *gb = &c->gb; - for (int i = 0; i < ch->count; i++) { unsigned scale = ch->scale[i]; int nb_bits = max_bits_table[scale]; @@ -326,11 +323,11 @@ static void dequantize_coefficients(HCAContext *c, ChannelContext *ch) } static void unpack(HCAContext *c, ChannelContext *ch, + GetBitContext *gb, unsigned hfr_group_count, int packed_noise_level, const uint8_t *ath) { - GetBitContext *gb = &c->gb; int delta_bits = get_bits(gb, 3); if (delta_bits > 5) { @@ -390,7 +387,7 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame, { HCAContext *c = avctx->priv_data; int ch, ret, packed_noise_level; - GetBitContext *gb = &c->gb; + GetBitContext gb0, *const gb = &gb0; float **samples; if (avctx->err_recognition & AV_EF_CRCCHECK) { @@ -412,11 +409,11 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *frame, packed_noise_level = (get_bits(gb, 9) << 8) - get_bits(gb, 7); for (ch = 0; ch < avctx->ch_layout.nb_channels; ch++) - unpack(c, &c->ch[ch], c->hfr_group_count, packed_noise_level, c->ath); + unpack(c, &c->ch[ch], gb, c->hfr_group_count, packed_noise_level, c->ath); for (int i = 0; i < 8; i++) { for (ch = 0; ch < avctx->ch_layout.nb_channels; ch++) - dequantize_coefficients(c, &c->ch[ch]); + dequantize_coefficients(c, &c->ch[ch], gb); for (ch = 0; ch < avctx->ch_layout.nb_channels; ch++) reconstruct_hfr(c, &c->ch[ch], c->hfr_group_count, c->bands_per_hfr_group, c->stereo_band_count + c->base_band_count, c->total_band_count); -- 2.34.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".