summaryrefslogtreecommitdiff
path: root/libavcodec/aacenc.h
diff options
context:
space:
mode:
Diffstat (limited to 'libavcodec/aacenc.h')
-rw-r--r--libavcodec/aacenc.h369
1 files changed, 356 insertions, 13 deletions
diff --git a/libavcodec/aacenc.h b/libavcodec/aacenc.h
index f77b2002e4..5a015ca92e 100644
--- a/libavcodec/aacenc.h
+++ b/libavcodec/aacenc.h
@@ -2,20 +2,20 @@
* AAC encoder
* Copyright (C) 2008 Konstantin Shishkov
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -30,8 +30,25 @@
#include "audio_frame_queue.h"
#include "psymodel.h"
+#include "lpc.h"
+
+typedef enum AACCoder {
+ AAC_CODER_ANMR = 0,
+ AAC_CODER_TWOLOOP,
+ AAC_CODER_FAST,
+
+ AAC_CODER_NB,
+}AACCoder;
+
typedef struct AACEncOptions {
- int stereo_mode;
+ int coder;
+ int pns;
+ int tns;
+ int ltp;
+ int pce;
+ int pred;
+ int mid_side;
+ int intensity_stereo;
} AACEncOptions;
struct AACEncContext;
@@ -41,13 +58,318 @@ typedef struct AACCoefficientsEncoder {
SingleChannelElement *sce, const float lambda);
void (*encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce,
int win, int group_len, const float lambda);
- void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, int size,
- int scale_idx, int cb, const float lambda);
- void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe, const float lambda);
+ void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, float *out, int size,
+ int scale_idx, int cb, const float lambda, int rtz);
+ void (*encode_tns_info)(struct AACEncContext *s, SingleChannelElement *sce);
+ void (*encode_ltp_info)(struct AACEncContext *s, SingleChannelElement *sce, int common_window);
+ void (*encode_main_pred)(struct AACEncContext *s, SingleChannelElement *sce);
+ void (*adjust_common_pred)(struct AACEncContext *s, ChannelElement *cpe);
+ void (*adjust_common_ltp)(struct AACEncContext *s, ChannelElement *cpe);
+ void (*apply_main_pred)(struct AACEncContext *s, SingleChannelElement *sce);
+ void (*apply_tns_filt)(struct AACEncContext *s, SingleChannelElement *sce);
+ void (*update_ltp)(struct AACEncContext *s, SingleChannelElement *sce);
+ void (*ltp_insert_new_frame)(struct AACEncContext *s);
+ void (*set_special_band_scalefactors)(struct AACEncContext *s, SingleChannelElement *sce);
+ void (*search_for_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce);
+ void (*mark_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce);
+ void (*search_for_tns)(struct AACEncContext *s, SingleChannelElement *sce);
+ void (*search_for_ltp)(struct AACEncContext *s, SingleChannelElement *sce, int common_window);
+ void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe);
+ void (*search_for_is)(struct AACEncContext *s, AVCodecContext *avctx, ChannelElement *cpe);
+ void (*search_for_pred)(struct AACEncContext *s, SingleChannelElement *sce);
} AACCoefficientsEncoder;
extern const AACCoefficientsEncoder ff_aac_coders[];
+typedef struct AACQuantizeBandCostCacheEntry {
+ float rd;
+ float energy;
+ int bits;
+ char cb;
+ char rtz;
+ uint16_t generation;
+} AACQuantizeBandCostCacheEntry;
+
+typedef struct AACPCEInfo {
+ int64_t layout;
+ int num_ele[4]; ///< front, side, back, lfe
+ int pairing[3][8]; ///< front, side, back
+ int index[4][8]; ///< front, side, back, lfe
+ uint8_t config_map[16]; ///< configs the encoder's channel specific settings
+ uint8_t reorder_map[16]; ///< maps channels from lavc to aac order
+} AACPCEInfo;
+
+/**
+ * List of PCE (Program Configuration Element) for the channel layouts listed
+ * in channel_layout.h
+ *
+ * For those wishing in the future to add other layouts:
+ *
+ * - num_ele: number of elements in each group of front, side, back, lfe channels
+ * (an element is of type SCE (single channel), CPE (channel pair) for
+ * the first 3 groups; and is LFE for LFE group).
+ *
+ * - pairing: 0 for an SCE element or 1 for a CPE; does not apply to LFE group
+ *
+ * - index: there are three independent indices for SCE, CPE and LFE;
+ * they are incremented irrespective of the group to which the element belongs;
+ * they are not reset when going from one group to another
+ *
+ * Example: for 7.0 channel layout,
+ * .pairing = { { 1, 0 }, { 1 }, { 1 }, }, (3 CPE and 1 SCE in front group)
+ * .index = { { 0, 0 }, { 1 }, { 2 }, },
+ * (index is 0 for the single SCE but goes from 0 to 2 for the CPEs)
+ *
+ * The index order impacts the channel ordering. But is otherwise arbitrary
+ * (the sequence could have been 2, 0, 1 instead of 0, 1, 2).
+ *
+ * Spec allows for discontinuous indices, e.g. if one has a total of two SCE,
+ * SCE.0 SCE.15 is OK per spec; BUT it won't be decoded by our AAC decoder
+ * which at this time requires that indices fully cover some range starting
+ * from 0 (SCE.1 SCE.0 is OK but not SCE.0 SCE.15).
+ *
+ * - config_map: total number of elements and their types. Beware, the way the
+ * types are ordered impacts the final channel ordering.
+ *
+ * - reorder_map: reorders the channels.
+ *
+ */
+static const AACPCEInfo aac_pce_configs[] = {
+ {
+ .layout = AV_CH_LAYOUT_MONO,
+ .num_ele = { 1, 0, 0, 0 },
+ .pairing = { { 0 }, },
+ .index = { { 0 }, },
+ .config_map = { 1, TYPE_SCE, },
+ .reorder_map = { 0 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_STEREO,
+ .num_ele = { 1, 0, 0, 0 },
+ .pairing = { { 1 }, },
+ .index = { { 0 }, },
+ .config_map = { 1, TYPE_CPE, },
+ .reorder_map = { 0, 1 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_2POINT1,
+ .num_ele = { 1, 0, 0, 1 },
+ .pairing = { { 1 }, },
+ .index = { { 0 },{ 0 },{ 0 },{ 0 } },
+ .config_map = { 2, TYPE_CPE, TYPE_LFE },
+ .reorder_map = { 0, 1, 2 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_2_1,
+ .num_ele = { 1, 0, 1, 0 },
+ .pairing = { { 1 },{ 0 },{ 0 } },
+ .index = { { 0 },{ 0 },{ 0 }, },
+ .config_map = { 2, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_SURROUND,
+ .num_ele = { 2, 0, 0, 0 },
+ .pairing = { { 1, 0 }, },
+ .index = { { 0, 0 }, },
+ .config_map = { 2, TYPE_CPE, TYPE_SCE, },
+ .reorder_map = { 0, 1, 2 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_3POINT1,
+ .num_ele = { 2, 0, 0, 1 },
+ .pairing = { { 1, 0 }, },
+ .index = { { 0, 0 }, { 0 }, { 0 }, { 0 }, },
+ .config_map = { 3, TYPE_CPE, TYPE_SCE, TYPE_LFE },
+ .reorder_map = { 0, 1, 2, 3 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_4POINT0,
+ .num_ele = { 2, 0, 1, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 0 }, },
+ .index = { { 0, 0 }, { 0 }, { 1 } },
+ .config_map = { 3, TYPE_CPE, TYPE_SCE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_4POINT1,
+ .num_ele = { 2, 1, 1, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 0 }, },
+ .index = { { 0, 0 }, { 1 }, { 2 }, { 0 } },
+ .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_2_2,
+ .num_ele = { 1, 1, 0, 0 },
+ .pairing = { { 1 }, { 1 }, },
+ .index = { { 0 }, { 1 }, },
+ .config_map = { 2, TYPE_CPE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_QUAD,
+ .num_ele = { 1, 0, 1, 0 },
+ .pairing = { { 1 }, { 0 }, { 1 }, },
+ .index = { { 0 }, { 0 }, { 1 } },
+ .config_map = { 2, TYPE_CPE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_5POINT0,
+ .num_ele = { 2, 1, 0, 0 },
+ .pairing = { { 1, 0 }, { 1 }, },
+ .index = { { 0, 0 }, { 1 } },
+ .config_map = { 3, TYPE_CPE, TYPE_SCE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_5POINT1,
+ .num_ele = { 2, 1, 1, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 1 }, },
+ .index = { { 0, 0 }, { 1 }, { 1 } },
+ .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_5POINT0_BACK,
+ .num_ele = { 2, 0, 1, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 1 } },
+ .index = { { 0, 0 }, { 0 }, { 1 } },
+ .config_map = { 3, TYPE_CPE, TYPE_SCE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_5POINT1_BACK,
+ .num_ele = { 2, 1, 1, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 1 }, },
+ .index = { { 0, 0 }, { 1 }, { 1 } },
+ .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_6POINT0,
+ .num_ele = { 2, 1, 1, 0 },
+ .pairing = { { 1, 0 }, { 1 }, { 0 }, },
+ .index = { { 0, 0 }, { 1 }, { 1 } },
+ .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_6POINT0_FRONT,
+ .num_ele = { 2, 1, 0, 0 },
+ .pairing = { { 1, 1 }, { 1 } },
+ .index = { { 1, 0 }, { 2 }, },
+ .config_map = { 3, TYPE_CPE, TYPE_CPE, TYPE_CPE, },
+ .reorder_map = { 0, 1, 2, 3, 4, 5 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_HEXAGONAL,
+ .num_ele = { 2, 0, 2, 0 },
+ .pairing = { { 1, 0 },{ 0 },{ 1, 0 }, },
+ .index = { { 0, 0 },{ 0 },{ 1, 1 } },
+ .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE, },
+ .reorder_map = { 0, 1, 2, 3, 4, 5 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_6POINT1,
+ .num_ele = { 2, 1, 2, 0 },
+ .pairing = { { 1, 0 },{ 0 },{ 1, 0 }, },
+ .index = { { 0, 0 },{ 1 },{ 1, 2 } },
+ .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_6POINT1_BACK,
+ .num_ele = { 2, 1, 2, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 1, 0 }, },
+ .index = { { 0, 0 }, { 1 }, { 1, 2 } },
+ .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_6POINT1_FRONT,
+ .num_ele = { 2, 1, 2, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 1, 0 }, },
+ .index = { { 0, 0 }, { 1 }, { 1, 2 } },
+ .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_7POINT0,
+ .num_ele = { 2, 1, 1, 0 },
+ .pairing = { { 1, 0 }, { 1 }, { 1 }, },
+ .index = { { 0, 0 }, { 1 }, { 2 }, },
+ .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_7POINT0_FRONT,
+ .num_ele = { 2, 1, 1, 0 },
+ .pairing = { { 1, 0 }, { 1 }, { 1 }, },
+ .index = { { 0, 0 }, { 1 }, { 2 }, },
+ .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_7POINT1,
+ .num_ele = { 2, 1, 2, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 1, 1 }, },
+ .index = { { 0, 0 }, { 1 }, { 1, 2 }, { 0 } },
+ .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_7POINT1_WIDE,
+ .num_ele = { 2, 1, 2, 0 },
+ .pairing = { { 1, 0 }, { 0 },{ 1, 1 }, },
+ .index = { { 0, 0 }, { 1 }, { 1, 2 }, { 0 } },
+ .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_7POINT1_WIDE_BACK,
+ .num_ele = { 2, 1, 2, 0 },
+ .pairing = { { 1, 0 }, { 0 }, { 1, 1 }, },
+ .index = { { 0, 0 }, { 1 }, { 1, 2 }, { 0 } },
+ .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_CPE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_OCTAGONAL,
+ .num_ele = { 2, 1, 2, 0 },
+ .pairing = { { 1, 0 }, { 1 }, { 1, 0 }, },
+ .index = { { 0, 0 }, { 1 }, { 2, 1 } },
+ .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7 },
+ },
+ { /* Meant for order 2/mixed ambisonics */
+ .layout = AV_CH_LAYOUT_OCTAGONAL | AV_CH_TOP_CENTER,
+ .num_ele = { 2, 2, 2, 0 },
+ .pairing = { { 1, 0 }, { 1, 0 }, { 1, 0 }, },
+ .index = { { 0, 0 }, { 1, 1 }, { 2, 2 } },
+ .config_map = { 6, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7, 8 },
+ },
+ { /* Meant for order 2/mixed ambisonics */
+ .layout = AV_CH_LAYOUT_6POINT0_FRONT | AV_CH_BACK_CENTER |
+ AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | AV_CH_TOP_CENTER,
+ .num_ele = { 2, 2, 2, 0 },
+ .pairing = { { 1, 1 }, { 1, 0 }, { 1, 0 }, },
+ .index = { { 0, 1 }, { 2, 0 }, { 3, 1 } },
+ .config_map = { 6, TYPE_CPE, TYPE_CPE, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
+ },
+ {
+ .layout = AV_CH_LAYOUT_HEXADECAGONAL,
+ .num_ele = { 4, 2, 4, 0 },
+ .pairing = { { 1, 0, 1, 0 }, { 1, 1 }, { 1, 0, 1, 0 }, },
+ .index = { { 0, 0, 1, 1 }, { 2, 3 }, { 4, 2, 5, 3 } },
+ .config_map = { 10, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE },
+ .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
+ },
+};
+
/**
* AAC encoder context
*/
@@ -57,29 +379,50 @@ typedef struct AACEncContext {
PutBitContext pb;
FFTContext mdct1024; ///< long (1024 samples) frame transform context
FFTContext mdct128; ///< short (128 samples) frame transform context
- AVFloatDSPContext fdsp;
- float *planar_samples[6]; ///< saved preprocessed input
+ AVFloatDSPContext *fdsp;
+ AACPCEInfo pce; ///< PCE data, if needed
+ float *planar_samples[16]; ///< saved preprocessed input
+ int profile; ///< copied from avctx
+ int needs_pce; ///< flag for non-standard layout
+ LPCContext lpc; ///< used by TNS
int samplerate_index; ///< MPEG-4 samplerate index
int channels; ///< channel count
+ const uint8_t *reorder_map; ///< lavc to aac reorder map
const uint8_t *chan_map; ///< channel configuration map
ChannelElement *cpe; ///< channel elements
FFPsyContext psy;
struct FFPsyPreprocessContext* psypp;
const AACCoefficientsEncoder *coder;
- int cur_channel;
- int last_frame;
+ int cur_channel; ///< current channel for coder context
+ int random_state;
float lambda;
+ int last_frame_pb_count; ///< number of bits for the previous frame
+ float lambda_sum; ///< sum(lambda), for Qvg reporting
+ int lambda_count; ///< count(lambda), for Qvg reporting
+ enum RawDataBlockType cur_type; ///< channel group type cur_channel belongs to
+
AudioFrameQueue afq;
DECLARE_ALIGNED(16, int, qcoefs)[96]; ///< quantized coefficients
DECLARE_ALIGNED(32, float, scoefs)[1024]; ///< scaled coefficients
+ uint16_t quantize_band_cost_cache_generation;
+ AACQuantizeBandCostCacheEntry quantize_band_cost_cache[256][128]; ///< memoization area for quantize_band_cost
+
+ void (*abs_pow34)(float *out, const float *in, const int size);
+ void (*quant_bands)(int *out, const float *in, const float *scaled,
+ int size, int is_signed, int maxval, const float Q34,
+ const float rounding);
+
struct {
float *samples;
} buffer;
} AACEncContext;
-extern float ff_aac_pow34sf_tab[428];
+void ff_aac_dsp_init_x86(AACEncContext *s);
+void ff_aac_coder_init_mips(AACEncContext *c);
+void ff_quantize_band_cost_cache_init(struct AACEncContext *s);
+
#endif /* AVCODEC_AACENC_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-14 19:45:50 +0000