X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fg729dec.c;h=eca69026c03bb7a769844b7094ef4143ad6559a6;hb=a247ac640df3da573cd661065bf53f37863e2b46;hp=2e4756b805738890ad85ee87ceaf1842a07f6f1b;hpb=4f9a8d3fe2f9485ee08848d336ee96f15ec0e7e6;p=ffmpeg diff --git a/libavcodec/g729dec.c b/libavcodec/g729dec.c index 2e4756b8057..eca69026c03 100644 --- a/libavcodec/g729dec.c +++ b/libavcodec/g729dec.c @@ -97,6 +97,7 @@ typedef struct { uint8_t gc_2nd_index_bits; ///< gain codebook (second stage) index (size in bits) uint8_t fc_signs_bits; ///< number of pulses in fixed-codebook vector uint8_t fc_indexes_bits; ///< size (in bits) of fixed-codebook index entry + uint8_t block_size; } G729FormatDescription; typedef struct { @@ -165,6 +166,7 @@ static const G729FormatDescription format_g729_8k = { .gc_2nd_index_bits = GC_2ND_IDX_BITS_8K, .fc_signs_bits = 4, .fc_indexes_bits = 13, + .block_size = G729_8K_BLOCK_SIZE, }; static const G729FormatDescription format_g729d_6k4 = { @@ -174,6 +176,7 @@ static const G729FormatDescription format_g729d_6k4 = { .gc_2nd_index_bits = GC_2ND_IDX_BITS_6K4, .fc_signs_bits = 2, .fc_indexes_bits = 9, + .block_size = G729D_6K4_BLOCK_SIZE, }; /** @@ -332,11 +335,14 @@ static int16_t g729d_voice_decision(int onset, int prev_voice_decision, const in static int32_t scalarproduct_int16_c(const int16_t * v1, const int16_t * v2, int order) { - int res = 0; + int64_t res = 0; while (order--) res += *v1++ * *v2++; + if (res > INT32_MAX) return INT32_MAX; + else if (res < INT32_MIN) return INT32_MIN; + return res; } @@ -424,14 +430,14 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) return ret; - if (buf_size % (G729_8K_BLOCK_SIZE * avctx->channels) == 0) { + if (buf_size && buf_size % ((G729_8K_BLOCK_SIZE + (avctx->codec_id == AV_CODEC_ID_ACELP_KELVIN)) * avctx->channels) == 0) { packet_type = FORMAT_G729_8K; format = &format_g729_8k; //Reset voice decision ctx->onset = 0; ctx->voice_decision = DECISION_VOICE; av_log(avctx, AV_LOG_DEBUG, "Packet type: %s\n", "G.729 @ 8kbit/s"); - } else if (buf_size == G729D_6K4_BLOCK_SIZE * avctx->channels) { + } else if (buf_size == G729D_6K4_BLOCK_SIZE * avctx->channels && avctx->codec_id != AV_CODEC_ID_ACELP_KELVIN) { packet_type = FORMAT_G729D_6K4; format = &format_g729d_6k4; av_log(avctx, AV_LOG_DEBUG, "Packet type: %s\n", "G.729D @ 6.4kbit/s"); @@ -445,12 +451,17 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, int bad_pitch = 0; ///< parity check failed int is_periodic = 0; ///< whether one of the subframes is declared as periodic or not out_frame = (int16_t*)frame->data[c]; + if (avctx->codec_id == AV_CODEC_ID_ACELP_KELVIN) { + if (*buf != ((avctx->channels - 1 - c) * 0x80 | 2)) + avpriv_request_sample(avctx, "First byte value %x for channel %d", *buf, c); + buf++; + } - for (i = 0; i < buf_size; i++) + for (i = 0; i < format->block_size; i++) frame_erasure |= buf[i]; frame_erasure = !frame_erasure; - init_get_bits(&gb, buf, 8*buf_size); + init_get_bits8(&gb, buf, format->block_size); ma_predictor = get_bits(&gb, 1); quantizer_1st = get_bits(&gb, VQ_1ST_BITS); @@ -552,12 +563,13 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, fc_v[i] = < \ fc_v[i] + gain_pitch * fc_v[i-pitch_delay], i >= pitch_delay */ - ff_acelp_weighted_vector_sum(fc + pitch_delay_int[i], - fc + pitch_delay_int[i], - fc, 1 << 14, - av_clip(ctx->past_gain_pitch[0], SHARP_MIN, SHARP_MAX), - 0, 14, - SUBFRAME_SIZE - pitch_delay_int[i]); + if (SUBFRAME_SIZE > pitch_delay_int[i]) + ff_acelp_weighted_vector_sum(fc + pitch_delay_int[i], + fc + pitch_delay_int[i], + fc, 1 << 14, + av_clip(ctx->past_gain_pitch[0], SHARP_MIN, SHARP_MAX), + 0, 14, + SUBFRAME_SIZE - pitch_delay_int[i]); memmove(ctx->past_gain_pitch+1, ctx->past_gain_pitch, 5 * sizeof(int16_t)); ctx->past_gain_code[1] = ctx->past_gain_code[0]; @@ -722,12 +734,12 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, /* Save signal for use in next frame. */ memmove(ctx->exc_base, ctx->exc_base + 2 * SUBFRAME_SIZE, (PITCH_DELAY_MAX+INTERPOL_LEN)*sizeof(int16_t)); - buf += packet_type == FORMAT_G729_8K ? G729_8K_BLOCK_SIZE : G729D_6K4_BLOCK_SIZE; + buf += format->block_size; ctx++; } *got_frame_ptr = 1; - return packet_type == FORMAT_G729_8K ? G729_8K_BLOCK_SIZE * avctx->channels : G729D_6K4_BLOCK_SIZE * avctx->channels; + return (format->block_size + (avctx->codec_id == AV_CODEC_ID_ACELP_KELVIN)) * avctx->channels; } static av_cold int decode_close(AVCodecContext *avctx) @@ -738,7 +750,7 @@ static av_cold int decode_close(AVCodecContext *avctx) return 0; } -AVCodec ff_g729_decoder = { +const AVCodec ff_g729_decoder = { .name = "g729", .long_name = NULL_IF_CONFIG_SMALL("G.729"), .type = AVMEDIA_TYPE_AUDIO, @@ -749,3 +761,15 @@ AVCodec ff_g729_decoder = { .close = decode_close, .capabilities = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DR1, }; + +const AVCodec ff_acelp_kelvin_decoder = { + .name = "acelp.kelvin", + .long_name = NULL_IF_CONFIG_SMALL("Sipro ACELP.KELVIN"), + .type = AVMEDIA_TYPE_AUDIO, + .id = AV_CODEC_ID_ACELP_KELVIN, + .priv_data_size = sizeof(G729Context), + .init = decoder_init, + .decode = decode_frame, + .close = decode_close, + .capabilities = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DR1, +};