mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-23 11:19:55 +00:00
Fix a bunch of spelling/grammar mistakes in doxygen comments and output.
Originally committed as revision 4855 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Diego Biurrun
parent
a9318df2f8
commit
1c7a8c17ff
@ -25,8 +25,8 @@
|
||||
* @file qdm2.c
|
||||
* QDM2 decoder
|
||||
* @author Ewald Snel, Benjamin Larsson, Alex Beregszaszi, Roberto Togni
|
||||
* The decoder is not perfect yet, there are still some distorions expecially
|
||||
* on files encoded with 16 or 8 subbands
|
||||
* The decoder is not perfect yet, there are still some distortions
|
||||
* especially on files encoded with 16 or 8 subbands.
|
||||
*/
|
||||
|
||||
#include <math.h>
|
||||
@ -94,7 +94,7 @@ typedef struct {
|
||||
} QDM2SubPacket;
|
||||
|
||||
/**
|
||||
* A node in subpacket list
|
||||
* A node in the subpacket list
|
||||
*/
|
||||
typedef struct _QDM2SubPNode {
|
||||
QDM2SubPacket *packet; ///< packet
|
||||
@ -196,12 +196,12 @@ typedef struct {
|
||||
int8_t tone_level_idx_temp[MPA_MAX_CHANNELS][30][64];
|
||||
|
||||
// Flags
|
||||
int has_errors; ///< packet have errors
|
||||
int has_errors; ///< packet has errors
|
||||
int superblocktype_2_3; ///< select fft tables and some algorithm based on superblock type
|
||||
int do_synth_filter; ///< used to perform or skip synthesis filter
|
||||
|
||||
int sub_packet;
|
||||
int noise_idx; ///< Index for dithering noise table
|
||||
int noise_idx; ///< index for dithering noise table
|
||||
} QDM2Context;
|
||||
|
||||
|
||||
@ -401,7 +401,7 @@ static int qdm2_get_se_vlc (VLC *vlc, GetBitContext *gb, int depth)
|
||||
* @param length data length
|
||||
* @param value checksum value
|
||||
*
|
||||
* @return 0 if checksum is ok
|
||||
* @return 0 if checksum is OK
|
||||
*/
|
||||
static uint16_t qdm2_packet_checksum (uint8_t *data, int length, int value) {
|
||||
int i;
|
||||
@ -414,7 +414,7 @@ static uint16_t qdm2_packet_checksum (uint8_t *data, int length, int value) {
|
||||
|
||||
|
||||
/**
|
||||
* Fills a QDM2SubPacket structure with packet type, size, and data pointer
|
||||
* Fills a QDM2SubPacket structure with packet type, size, and data pointer.
|
||||
*
|
||||
* @param gb bitreader context
|
||||
* @param sub_packet packet under analysis
|
||||
@ -441,15 +441,15 @@ static void qdm2_decode_sub_packet_header (GetBitContext *gb, QDM2SubPacket *sub
|
||||
sub_packet->data = &gb->buffer[get_bits_count(gb) / 8]; // FIXME: this depends on bitreader internal data
|
||||
}
|
||||
|
||||
av_log(NULL,AV_LOG_DEBUG,"Sub packet: type=%d size=%d start_offs=%x\n",
|
||||
av_log(NULL,AV_LOG_DEBUG,"Subpacket: type=%d size=%d start_offs=%x\n",
|
||||
sub_packet->type, sub_packet->size, get_bits_count(gb) / 8);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Return node pointer to first packet of requested type in list
|
||||
* Return node pointer to first packet of requested type in list.
|
||||
*
|
||||
* @param list list of subpacket to be scanned
|
||||
* @param list list of subpackets to be scanned
|
||||
* @param type type of searched subpacket
|
||||
* @return node pointer for subpacket if found, else NULL
|
||||
*/
|
||||
@ -465,8 +465,8 @@ static QDM2SubPNode* qdm2_search_subpacket_type_in_list (QDM2SubPNode *list, int
|
||||
|
||||
|
||||
/**
|
||||
* Replaces 8 elements with their average value
|
||||
* Called by qdm2_decode_superblock before starting subblocks decoding
|
||||
* Replaces 8 elements with their average value.
|
||||
* Called by qdm2_decode_superblock before starting subblock decoding.
|
||||
*
|
||||
* @param q context
|
||||
*/
|
||||
@ -494,8 +494,8 @@ static void average_quantized_coeffs (QDM2Context *q)
|
||||
|
||||
|
||||
/**
|
||||
* Build subband samples with noise weighted by q->tone_level
|
||||
* Called by synthfilt_build_sb_samples
|
||||
* Build subband samples with noise weighted by q->tone_level.
|
||||
* Called by synthfilt_build_sb_samples.
|
||||
*
|
||||
* @param q context
|
||||
* @param sb subband index
|
||||
@ -518,8 +518,8 @@ static void build_sb_samples_from_noise (QDM2Context *q, int sb)
|
||||
|
||||
|
||||
/**
|
||||
* Called while processing data from subpackets 11 and 12
|
||||
* Used after making changes to coding_method array
|
||||
* Called while processing data from subpackets 11 and 12.
|
||||
* Used after making changes to coding_method array.
|
||||
*
|
||||
* @param sb subband index
|
||||
* @param channels number of channels
|
||||
@ -790,7 +790,7 @@ static void fill_coding_method_array (sb_int8_array tone_level_idx, sb_int8_arra
|
||||
*
|
||||
* @param q context
|
||||
* @param gb bitreader context
|
||||
* @param length packet length in bit
|
||||
* @param length packet length in bits
|
||||
* @param sb_min lower subband processed (sb_min included)
|
||||
* @param sb_max higher subband processed (sb_max excluded)
|
||||
*/
|
||||
@ -968,14 +968,14 @@ static void synthfilt_build_sb_samples (QDM2Context *q, GetBitContext *gb, int l
|
||||
|
||||
|
||||
/**
|
||||
* Init the first element of a channel in quantized_coeffs with data from packet 10 (quantized_coeffs[ch][0])
|
||||
* Init the first element of a channel in quantized_coeffs with data from packet 10 (quantized_coeffs[ch][0]).
|
||||
* This is similar to process_subpacket_9, but for a single channel and for element [0]
|
||||
* same VLC tables as process_subpacket_9 are used
|
||||
* same VLC tables as process_subpacket_9 are used.
|
||||
*
|
||||
* @param q context
|
||||
* @param quantized_coeffs pointer to quantized_coeffs[ch][0]
|
||||
* @param gb bitreader context
|
||||
* @param length packet length in bit
|
||||
* @param length packet length in bits
|
||||
*/
|
||||
static void init_quantized_coeffs_elem0 (int8_t *quantized_coeffs, GetBitContext *gb, int length)
|
||||
{
|
||||
@ -1012,7 +1012,7 @@ static void init_quantized_coeffs_elem0 (int8_t *quantized_coeffs, GetBitContext
|
||||
*
|
||||
* @param q context
|
||||
* @param gb bitreader context
|
||||
* @param length packet length in bit
|
||||
* @param length packet length in bits
|
||||
*/
|
||||
static void init_tone_level_dequantization (QDM2Context *q, GetBitContext *gb, int length)
|
||||
{
|
||||
@ -1114,7 +1114,7 @@ static void process_subpacket_9 (QDM2Context *q, QDM2SubPNode *node)
|
||||
*
|
||||
* @param q context
|
||||
* @param node pointer to node with packet
|
||||
* @param length packet length in bit
|
||||
* @param length packet length in bits
|
||||
*/
|
||||
static void process_subpacket_10 (QDM2Context *q, QDM2SubPNode *node, int length)
|
||||
{
|
||||
@ -1160,7 +1160,7 @@ static void process_subpacket_11 (QDM2Context *q, QDM2SubPNode *node, int length
|
||||
*
|
||||
* @param q context
|
||||
* @param node pointer to node with packet
|
||||
* @param length packet length in bit
|
||||
* @param length packet length in bits
|
||||
*/
|
||||
static void process_subpacket_12 (QDM2Context *q, QDM2SubPNode *node, int length)
|
||||
{
|
||||
@ -1205,7 +1205,7 @@ static void process_synthesis_subpackets (QDM2Context *q, QDM2SubPNode *list)
|
||||
|
||||
|
||||
/*
|
||||
* Decode superblock, fill packet lists
|
||||
* Decode superblock, fill packet lists.
|
||||
*
|
||||
* @param q context
|
||||
*/
|
||||
@ -1274,7 +1274,7 @@ static void qdm2_decode_super_block (QDM2Context *q)
|
||||
break;
|
||||
}
|
||||
|
||||
/* decode sub packet */
|
||||
/* decode subpacket */
|
||||
packet = &q->sub_packets[i];
|
||||
qdm2_decode_sub_packet_header(&gb, packet);
|
||||
next_index = packet->size + get_bits_count(&gb) / 8;
|
||||
@ -1291,10 +1291,10 @@ static void qdm2_decode_super_block (QDM2Context *q)
|
||||
|
||||
packet_bytes -= sub_packet_size;
|
||||
|
||||
/* add sub packet to 'all sub packets' list */
|
||||
/* add subpacket to 'all subpackets' list */
|
||||
q->sub_packet_list_A[i].packet = packet;
|
||||
|
||||
/* add sub packet to related list */
|
||||
/* add subpacket to related list */
|
||||
if (packet->type == 8) {
|
||||
SAMPLES_NEEDED_2("packet type 8");
|
||||
return;
|
||||
@ -1435,11 +1435,11 @@ static void qdm2_decode_fft_packets (QDM2Context *q)
|
||||
for (i=0; i < 5; i++)
|
||||
q->fft_coefs_min_index[i] = -1;
|
||||
|
||||
/* process sub packets ordered by type, largest type first */
|
||||
/* process subpackets ordered by type, largest type first */
|
||||
for (i = 0, max = 256; i < q->sub_packets_B; i++) {
|
||||
QDM2SubPacket *packet;
|
||||
|
||||
/* find sub packet with largest type less than max */
|
||||
/* find subpacket with largest type less than max */
|
||||
for (j = 0, min = 0, packet = NULL; j < q->sub_packets_B; j++) {
|
||||
value = q->sub_packet_list_B[j].packet->type;
|
||||
if (value > min && value < max) {
|
||||
@ -1619,7 +1619,7 @@ static void qdm2_calculate_fft (QDM2Context *q, int channel, int sub_packet)
|
||||
float c, s, f0, f1, f2, f3;
|
||||
int i, j;
|
||||
|
||||
/* pre rotation (or something like that) */
|
||||
/* prerotation (or something like that) */
|
||||
for (i=1; i < n2; i++) {
|
||||
j = (n - i);
|
||||
c = q->exptab[i].re;
|
||||
@ -1960,11 +1960,11 @@ void qdm2_decode (QDM2Context *q, uint8_t *in, int16_t *out)
|
||||
/* decode block of QDM2 compressed data */
|
||||
if (q->sub_packet == 0) {
|
||||
q->has_errors = 0; // zero it for a new super block
|
||||
av_log(NULL,AV_LOG_DEBUG,"Super block follows\n");
|
||||
av_log(NULL,AV_LOG_DEBUG,"Superblock follows\n");
|
||||
qdm2_decode_super_block(q);
|
||||
}
|
||||
|
||||
/* parse sub packets */
|
||||
/* parse subpackets */
|
||||
if (!q->has_errors) {
|
||||
if (q->sub_packet == 2)
|
||||
qdm2_decode_fft_packets(q);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user