mirror of
https://github.com/DrKLO/Telegram.git
synced 2024-12-22 22:45:18 +01:00
671 lines
18 KiB
C
671 lines
18 KiB
C
#include <jni.h>
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#include <ogg/ogg.h>
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#include <stdio.h>
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#include <opus.h>
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#include <stdlib.h>
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#include <time.h>
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#include <opusfile.h>
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#include "utils.h"
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typedef struct {
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int version;
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int channels; /* Number of channels: 1..255 */
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int preskip;
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ogg_uint32_t input_sample_rate;
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int gain; /* in dB S7.8 should be zero whenever possible */
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int channel_mapping;
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/* The rest is only used if channel_mapping != 0 */
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int nb_streams;
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int nb_coupled;
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unsigned char stream_map[255];
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} OpusHeader;
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typedef struct {
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unsigned char *data;
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int maxlen;
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int pos;
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} Packet;
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typedef struct {
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const unsigned char *data;
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int maxlen;
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int pos;
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} ROPacket;
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typedef struct {
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void *readdata;
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opus_int64 total_samples_per_channel;
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int rawmode;
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int channels;
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long rate;
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int gain;
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int samplesize;
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int endianness;
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char *infilename;
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int ignorelength;
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int skip;
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int extraout;
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char *comments;
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int comments_length;
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int copy_comments;
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} oe_enc_opt;
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static int write_uint32(Packet *p, ogg_uint32_t val) {
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if (p->pos > p->maxlen - 4) {
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return 0;
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}
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p->data[p->pos ] = (val ) & 0xFF;
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p->data[p->pos+1] = (val>> 8) & 0xFF;
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p->data[p->pos+2] = (val>>16) & 0xFF;
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p->data[p->pos+3] = (val>>24) & 0xFF;
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p->pos += 4;
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return 1;
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}
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static int write_uint16(Packet *p, ogg_uint16_t val) {
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if (p->pos > p->maxlen-2) {
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return 0;
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}
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p->data[p->pos ] = (val ) & 0xFF;
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p->data[p->pos+1] = (val>> 8) & 0xFF;
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p->pos += 2;
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return 1;
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}
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static int write_chars(Packet *p, const unsigned char *str, int nb_chars)
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{
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int i;
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if (p->pos>p->maxlen-nb_chars)
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return 0;
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for (i=0;i<nb_chars;i++)
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p->data[p->pos++] = str[i];
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return 1;
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}
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static int read_uint32(ROPacket *p, ogg_uint32_t *val)
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{
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if (p->pos>p->maxlen-4)
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return 0;
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*val = (ogg_uint32_t)p->data[p->pos ];
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*val |= (ogg_uint32_t)p->data[p->pos+1]<< 8;
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*val |= (ogg_uint32_t)p->data[p->pos+2]<<16;
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*val |= (ogg_uint32_t)p->data[p->pos+3]<<24;
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p->pos += 4;
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return 1;
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}
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static int read_uint16(ROPacket *p, ogg_uint16_t *val)
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{
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if (p->pos>p->maxlen-2)
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return 0;
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*val = (ogg_uint16_t)p->data[p->pos ];
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*val |= (ogg_uint16_t)p->data[p->pos+1]<<8;
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p->pos += 2;
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return 1;
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}
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static int read_chars(ROPacket *p, unsigned char *str, int nb_chars)
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{
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int i;
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if (p->pos>p->maxlen-nb_chars)
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return 0;
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for (i=0;i<nb_chars;i++)
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str[i] = p->data[p->pos++];
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return 1;
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}
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int opus_header_to_packet(const OpusHeader *h, unsigned char *packet, int len) {
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int i;
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Packet p;
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unsigned char ch;
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p.data = packet;
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p.maxlen = len;
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p.pos = 0;
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if (len < 19) {
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return 0;
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}
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if (!write_chars(&p, (const unsigned char *)"OpusHead", 8)) {
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return 0;
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}
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ch = 1;
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if (!write_chars(&p, &ch, 1)) {
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return 0;
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}
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ch = h->channels;
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if (!write_chars(&p, &ch, 1)) {
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return 0;
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}
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if (!write_uint16(&p, h->preskip)) {
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return 0;
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}
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if (!write_uint32(&p, h->input_sample_rate)) {
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return 0;
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}
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if (!write_uint16(&p, h->gain)) {
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return 0;
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}
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ch = h->channel_mapping;
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if (!write_chars(&p, &ch, 1)) {
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return 0;
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}
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if (h->channel_mapping != 0) {
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ch = h->nb_streams;
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if (!write_chars(&p, &ch, 1)) {
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return 0;
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}
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ch = h->nb_coupled;
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if (!write_chars(&p, &ch, 1)) {
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return 0;
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}
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/* Multi-stream support */
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for (i = 0; i < h->channels; i++) {
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if (!write_chars(&p, &h->stream_map[i], 1)) {
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return 0;
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}
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}
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}
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return p.pos;
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}
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#define writeint(buf, base, val) do { buf[base + 3] = ((val) >> 24) & 0xff; \
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buf[base + 2]=((val) >> 16) & 0xff; \
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buf[base + 1]=((val) >> 8) & 0xff; \
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buf[base] = (val) & 0xff; \
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} while(0)
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static void comment_init(char **comments, int *length, const char *vendor_string) {
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// The 'vendor' field should be the actual encoding library used
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int vendor_length = strlen(vendor_string);
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int user_comment_list_length = 0;
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int len = 8 + 4 + vendor_length + 4;
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char *p = (char *)malloc(len);
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memcpy(p, "OpusTags", 8);
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writeint(p, 8, vendor_length);
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memcpy(p + 12, vendor_string, vendor_length);
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writeint(p, 12 + vendor_length, user_comment_list_length);
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*length = len;
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*comments = p;
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}
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static void comment_pad(char **comments, int* length, int amount) {
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if (amount > 0) {
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char *p = *comments;
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// Make sure there is at least amount worth of padding free, and round up to the maximum that fits in the current ogg segments
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int newlen = (*length + amount + 255) / 255 * 255 - 1;
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p = realloc(p, newlen);
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for (int i = *length; i < newlen; i++) {
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p[i] = 0;
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}
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*comments = p;
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*length = newlen;
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}
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}
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static int writeOggPage(ogg_page *page, FILE *os) {
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int written = fwrite(page->header, sizeof(unsigned char), page->header_len, os);
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written += fwrite(page->body, sizeof(unsigned char), page->body_len, os);
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return written;
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}
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const opus_int32 bitrate = 16000;
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const opus_int32 rate = 16000;
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const opus_int32 frame_size = 960;
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const int with_cvbr = 1;
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const int max_ogg_delay = 0;
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const int comment_padding = 512;
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opus_int32 coding_rate = 16000;
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ogg_int32_t _packetId;
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OpusEncoder *_encoder = 0;
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uint8_t *_packet = 0;
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ogg_stream_state os;
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FILE *_fileOs = 0;
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oe_enc_opt inopt;
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OpusHeader header;
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opus_int32 min_bytes;
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int max_frame_bytes;
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ogg_packet op;
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ogg_page og;
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opus_int64 bytes_written;
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opus_int64 pages_out;
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opus_int64 total_samples;
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ogg_int64_t enc_granulepos;
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ogg_int64_t last_granulepos;
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int size_segments;
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int last_segments;
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void cleanupRecorder() {
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ogg_stream_flush(&os, &og);
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if (_encoder) {
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opus_encoder_destroy(_encoder);
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_encoder = 0;
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}
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ogg_stream_clear(&os);
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if (_packet) {
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free(_packet);
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_packet = 0;
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}
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if (_fileOs) {
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fclose(_fileOs);
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_fileOs = 0;
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}
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_packetId = -1;
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bytes_written = 0;
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pages_out = 0;
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total_samples = 0;
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enc_granulepos = 0;
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size_segments = 0;
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last_segments = 0;
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last_granulepos = 0;
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memset(&os, 0, sizeof(ogg_stream_state));
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memset(&inopt, 0, sizeof(oe_enc_opt));
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memset(&header, 0, sizeof(OpusHeader));
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memset(&op, 0, sizeof(ogg_packet));
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memset(&og, 0, sizeof(ogg_page));
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}
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int initRecorder(const char *path) {
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cleanupRecorder();
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if (!path) {
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return 0;
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}
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_fileOs = fopen(path, "wb");
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if (!_fileOs) {
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return 0;
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}
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inopt.rate = rate;
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inopt.gain = 0;
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inopt.endianness = 0;
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inopt.copy_comments = 0;
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inopt.rawmode = 1;
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inopt.ignorelength = 1;
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inopt.samplesize = 16;
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inopt.channels = 1;
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inopt.skip = 0;
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comment_init(&inopt.comments, &inopt.comments_length, opus_get_version_string());
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if (rate > 24000) {
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coding_rate = 48000;
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} else if (rate > 16000) {
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coding_rate = 24000;
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} else if (rate > 12000) {
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coding_rate = 16000;
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} else if (rate > 8000) {
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coding_rate = 12000;
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} else {
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coding_rate = 8000;
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}
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if (rate != coding_rate) {
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LOGE("Invalid rate");
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return 0;
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}
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header.channels = 1;
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header.channel_mapping = 0;
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header.input_sample_rate = rate;
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header.gain = inopt.gain;
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header.nb_streams = 1;
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int result = OPUS_OK;
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_encoder = opus_encoder_create(coding_rate, 1, OPUS_APPLICATION_AUDIO, &result);
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if (result != OPUS_OK) {
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LOGE("Error cannot create encoder: %s", opus_strerror(result));
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return 0;
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}
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min_bytes = max_frame_bytes = (1275 * 3 + 7) * header.nb_streams;
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_packet = malloc(max_frame_bytes);
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result = opus_encoder_ctl(_encoder, OPUS_SET_BITRATE(bitrate));
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if (result != OPUS_OK) {
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LOGE("Error OPUS_SET_BITRATE returned: %s", opus_strerror(result));
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return 0;
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}
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#ifdef OPUS_SET_LSB_DEPTH
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result = opus_encoder_ctl(_encoder, OPUS_SET_LSB_DEPTH(max(8, min(24, inopt.samplesize))));
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if (result != OPUS_OK) {
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LOGE("Warning OPUS_SET_LSB_DEPTH returned: %s", opus_strerror(result));
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}
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#endif
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opus_int32 lookahead;
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result = opus_encoder_ctl(_encoder, OPUS_GET_LOOKAHEAD(&lookahead));
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if (result != OPUS_OK) {
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LOGE("Error OPUS_GET_LOOKAHEAD returned: %s", opus_strerror(result));
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return 0;
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}
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inopt.skip += lookahead;
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header.preskip = (int)(inopt.skip * (48000.0 / coding_rate));
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inopt.extraout = (int)(header.preskip * (rate / 48000.0));
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if (ogg_stream_init(&os, rand()) == -1) {
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LOGE("Error: stream init failed");
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return 0;
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}
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unsigned char header_data[100];
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int packet_size = opus_header_to_packet(&header, header_data, 100);
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op.packet = header_data;
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op.bytes = packet_size;
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op.b_o_s = 1;
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op.e_o_s = 0;
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op.granulepos = 0;
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op.packetno = 0;
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ogg_stream_packetin(&os, &op);
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while ((result = ogg_stream_flush(&os, &og))) {
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if (!result) {
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break;
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}
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int pageBytesWritten = writeOggPage(&og, _fileOs);
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if (pageBytesWritten != og.header_len + og.body_len) {
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LOGE("Error: failed writing header to output stream");
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return 0;
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}
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bytes_written += pageBytesWritten;
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pages_out++;
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}
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comment_pad(&inopt.comments, &inopt.comments_length, comment_padding);
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op.packet = (unsigned char *)inopt.comments;
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op.bytes = inopt.comments_length;
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op.b_o_s = 0;
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op.e_o_s = 0;
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op.granulepos = 0;
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op.packetno = 1;
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ogg_stream_packetin(&os, &op);
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while ((result = ogg_stream_flush(&os, &og))) {
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if (result == 0) {
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break;
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}
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int writtenPageBytes = writeOggPage(&og, _fileOs);
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if (writtenPageBytes != og.header_len + og.body_len) {
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LOGE("Error: failed writing header to output stream");
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return 0;
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}
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bytes_written += writtenPageBytes;
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pages_out++;
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}
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free(inopt.comments);
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return 1;
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}
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int writeFrame(uint8_t *framePcmBytes, unsigned int frameByteCount) {
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int cur_frame_size = frame_size;
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_packetId++;
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opus_int32 nb_samples = frameByteCount / 2;
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total_samples += nb_samples;
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if (nb_samples < frame_size) {
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op.e_o_s = 1;
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} else {
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op.e_o_s = 0;
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}
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int nbBytes = 0;
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if (nb_samples != 0) {
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uint8_t *paddedFrameBytes = framePcmBytes;
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int freePaddedFrameBytes = 0;
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if (nb_samples < cur_frame_size) {
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paddedFrameBytes = malloc(cur_frame_size * 2);
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freePaddedFrameBytes = 1;
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memcpy(paddedFrameBytes, framePcmBytes, frameByteCount);
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memset(paddedFrameBytes + nb_samples * 2, 0, cur_frame_size * 2 - nb_samples * 2);
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}
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nbBytes = opus_encode(_encoder, (opus_int16 *)paddedFrameBytes, cur_frame_size, _packet, max_frame_bytes / 10);
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if (freePaddedFrameBytes) {
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free(paddedFrameBytes);
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paddedFrameBytes = NULL;
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}
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if (nbBytes < 0) {
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LOGE("Encoding failed: %s. Aborting.", opus_strerror(nbBytes));
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return 0;
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}
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enc_granulepos += cur_frame_size * 48000 / coding_rate;
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size_segments = (nbBytes + 255) / 255;
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min_bytes = min(nbBytes, min_bytes);
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}
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while ((((size_segments <= 255) && (last_segments + size_segments > 255)) || (enc_granulepos - last_granulepos > max_ogg_delay)) && ogg_stream_flush_fill(&os, &og, 255 * 255)) {
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if (ogg_page_packets(&og) != 0) {
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last_granulepos = ogg_page_granulepos(&og);
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}
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last_segments -= og.header[26];
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int writtenPageBytes = writeOggPage(&og, _fileOs);
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if (writtenPageBytes != og.header_len + og.body_len) {
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LOGE("Error: failed writing data to output stream");
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return 0;
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}
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bytes_written += writtenPageBytes;
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pages_out++;
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}
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op.packet = (unsigned char *)_packet;
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op.bytes = nbBytes;
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op.b_o_s = 0;
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op.granulepos = enc_granulepos;
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if (op.e_o_s) {
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op.granulepos = ((total_samples * 48000 + rate - 1) / rate) + header.preskip;
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}
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op.packetno = 2 + _packetId;
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ogg_stream_packetin(&os, &op);
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last_segments += size_segments;
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while ((op.e_o_s || (enc_granulepos + (frame_size * 48000 / coding_rate) - last_granulepos > max_ogg_delay) || (last_segments >= 255)) ? ogg_stream_flush_fill(&os, &og, 255 * 255) : ogg_stream_pageout_fill(&os, &og, 255 * 255)) {
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if (ogg_page_packets(&og) != 0) {
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last_granulepos = ogg_page_granulepos(&og);
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}
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last_segments -= og.header[26];
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int writtenPageBytes = writeOggPage(&og, _fileOs);
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if (writtenPageBytes != og.header_len + og.body_len) {
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LOGE("Error: failed writing data to output stream");
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return 0;
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}
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bytes_written += writtenPageBytes;
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pages_out++;
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}
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return 1;
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}
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JNIEXPORT int Java_org_telegram_android_MediaController_startRecord(JNIEnv *env, jclass class, jstring path) {
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const char *pathStr = (*env)->GetStringUTFChars(env, path, 0);
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int result = initRecorder(pathStr);
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if (pathStr != 0) {
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(*env)->ReleaseStringUTFChars(env, path, pathStr);
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}
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return result;
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}
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JNIEXPORT int Java_org_telegram_android_MediaController_writeFrame(JNIEnv *env, jclass class, jobject frame, jint len) {
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jbyte *frameBytes = (*env)->GetDirectBufferAddress(env, frame);
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return writeFrame(frameBytes, len);
|
|
}
|
|
|
|
JNIEXPORT void Java_org_telegram_android_MediaController_stopRecord(JNIEnv *env, jclass class) {
|
|
cleanupRecorder();
|
|
}
|
|
|
|
//player
|
|
OggOpusFile *_opusFile;
|
|
int _isSeekable = 0;
|
|
int64_t _totalPcmDuration = 0;
|
|
int64_t _currentPcmOffset = 0;
|
|
int _finished = 0;
|
|
static const int playerBuffersCount = 3;
|
|
static const int playerSampleRate = 48000;
|
|
|
|
void cleanupPlayer() {
|
|
if (_opusFile) {
|
|
op_free(_opusFile);
|
|
_opusFile = 0;
|
|
}
|
|
_isSeekable = 0;
|
|
_totalPcmDuration = 0;
|
|
_currentPcmOffset = 0;
|
|
_finished = 0;
|
|
}
|
|
|
|
int seekPlayer(float position) {
|
|
if (!_opusFile || !_isSeekable || position < 0) {
|
|
return 0;
|
|
}
|
|
int result = op_pcm_seek(_opusFile, (ogg_int64_t)(position * _totalPcmDuration));
|
|
if (result != OPUS_OK) {
|
|
LOGE("op_pcm_seek failed: %d", result);
|
|
}
|
|
ogg_int64_t pcmPosition = op_pcm_tell(_opusFile);
|
|
_currentPcmOffset = pcmPosition;
|
|
return result == OPUS_OK;
|
|
}
|
|
|
|
int initPlayer(const char *path) {
|
|
cleanupPlayer();
|
|
|
|
int openError = OPUS_OK;
|
|
_opusFile = op_open_file(path, &openError);
|
|
if (!_opusFile || openError != OPUS_OK) {
|
|
LOGE("op_open_file failed: %d", openError);
|
|
cleanupPlayer();
|
|
return 0;
|
|
}
|
|
|
|
_isSeekable = op_seekable(_opusFile);
|
|
_totalPcmDuration = op_pcm_total(_opusFile, -1);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void fillBuffer(uint8_t *buffer, int capacity, int *args) {
|
|
if (_opusFile) {
|
|
args[1] = max(0, op_pcm_tell(_opusFile));
|
|
|
|
if (_finished) {
|
|
args[0] = 0;
|
|
args[1] = 0;
|
|
args[2] = 1;
|
|
return;
|
|
} else {
|
|
int writtenOutputBytes = 0;
|
|
int endOfFileReached = 0;
|
|
|
|
while (writtenOutputBytes < capacity) {
|
|
int readSamples = op_read(_opusFile, (opus_int16 *)(buffer + writtenOutputBytes), (capacity - writtenOutputBytes) / 2, NULL);
|
|
|
|
if (readSamples > 0) {
|
|
writtenOutputBytes += readSamples * 2;
|
|
} else {
|
|
if (readSamples < 0) {
|
|
LOGE("op_read failed: %d", readSamples);
|
|
}
|
|
endOfFileReached = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
args[0] = writtenOutputBytes;
|
|
|
|
if (endOfFileReached || args[1] + args[0] == _totalPcmDuration) {
|
|
_finished = 1;
|
|
args[2] = 1;
|
|
} else {
|
|
args[2] = 0;
|
|
}
|
|
}
|
|
} else {
|
|
memset(buffer, 0, capacity);
|
|
args[0] = capacity;
|
|
args[1] = _totalPcmDuration;
|
|
}
|
|
}
|
|
|
|
JNIEXPORT jlong Java_org_telegram_android_MediaController_getTotalPcmDuration(JNIEnv *env, jclass class) {
|
|
return _totalPcmDuration;
|
|
}
|
|
|
|
JNIEXPORT void Java_org_telegram_android_MediaController_readOpusFile(JNIEnv *env, jclass class, jobject buffer, jint capacity, jintArray args) {
|
|
jint *argsArr = (*env)->GetIntArrayElements(env, args, 0);
|
|
jbyte *bufferBytes = (*env)->GetDirectBufferAddress(env, buffer);
|
|
fillBuffer(bufferBytes, capacity, argsArr);
|
|
(*env)->ReleaseIntArrayElements(env, args, argsArr, 0);
|
|
}
|
|
|
|
JNIEXPORT int Java_org_telegram_android_MediaController_seekOpusFile(JNIEnv *env, jclass class, jfloat position) {
|
|
return seekPlayer(position);
|
|
}
|
|
|
|
JNIEXPORT int Java_org_telegram_android_MediaController_openOpusFile(JNIEnv *env, jclass class, jstring path) {
|
|
const char *pathStr = (*env)->GetStringUTFChars(env, path, 0);
|
|
|
|
int result = initPlayer(pathStr);
|
|
|
|
if (pathStr != 0) {
|
|
(*env)->ReleaseStringUTFChars(env, path, pathStr);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
JNIEXPORT void Java_org_telegram_android_MediaController_closeOpusFile(JNIEnv *env, jclass class) {
|
|
cleanupPlayer();
|
|
}
|
|
|
|
JNIEXPORT int Java_org_telegram_android_MediaController_isOpusFile(JNIEnv *env, jclass class, jstring path) {
|
|
const char *pathStr = (*env)->GetStringUTFChars(env, path, 0);
|
|
|
|
int result = 0;
|
|
|
|
int error = OPUS_OK;
|
|
OggOpusFile *file = op_test_file(pathStr, &error);
|
|
if (file != NULL) {
|
|
int error = op_test_open(file);
|
|
op_free(file);
|
|
|
|
result = error == OPUS_OK;
|
|
}
|
|
|
|
if (pathStr != 0) {
|
|
(*env)->ReleaseStringUTFChars(env, path, pathStr);
|
|
}
|
|
|
|
return result;
|
|
}
|